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Wichienrat W, Surisaeng T, Sa-Ard-Iam N, Chanamuangkon T, Mahanonda R, Wisitrasameewong W. Alveolar Bone Loss in a Ligature-Induced Periodontitis Model in Rat Using Different Ligature Sizes. Eur J Dent 2024; 18:933-941. [PMID: 38442914 PMCID: PMC11290929 DOI: 10.1055/s-0044-1779426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024] Open
Abstract
OBJECTIVES Ligature-induced periodontitis model has been widely used as a preclinical stage for investigating new treatment modalities. However, the effect of different ligature sizes on alveolar bone loss has never been studied. Therefore, we examined alveolar bone loss in this rat model using different sizes of silk ligatures, as well as healing after ligature removal. MATERIALS AND METHODS Left maxillary second molars of Sprague-Dawley rats were ligated with 3-0, 4-0, or 5-0 silk ligatures (n = 4-5/group) for 14 days before harvested maxillae and gingival tissues. For subsequent experiment, animals were ligated for 14 days using the ligature size that induced the most alveolar bone loss before ligature removal and sacrificed at 0, 7 and 14 days (n = 5-6/group). All maxillae and gingival tissues were harvested to evaluate alveolar bone level, tumor necrosis factor-α (TNF-α), and interleukin-1β (IL-1β) levels. STATISTICAL ANALYSIS Data was analyzed using SPSS Statistics 23.0 software (SPSS Inc., Chicago, Illinois, United States). Data from all experiments were tested for normality using Shapiro-Wilk test. Data between ligatured and nonligatured teeth were compared using Student's t-test or Wilcoxon signed-rank test. Differences among different ligature sizes were analyzed by analysis of variance followed by multiple comparisons with post-hoc test. A p-value less than 0.05 was considered statistically significant. RESULTS The alveolar bone loss of ligated teeth was substantially higher than that of control after 14 days of ligation. While 3-0 and 4-0 resulted in significantly greater bone loss than 5-0 silk, the 3-0 group had the lowest rate of ligature loss. Therefore, alveolar bone healing postligature removal was investigated further using 3-0 silk. The results showed no significant bone level change at 2 weeks after ligature removal. In term of IL-1β and TNF-α levels, there was no statistically significant difference in IL-1β level between groups at any time point, while TNF-α was undetectable. CONCLUSION These data showed that 3-0 silk was the most effective ligature size in promoting alveolar bone loss comparing with 4-0 and 5-0 silk. During the 2-week period following ligature removal, spontaneous bone healing was not observed.
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Affiliation(s)
- Warintorn Wichienrat
- Department of Periodontology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Theeraphat Surisaeng
- Department of Periodontology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Noppadol Sa-Ard-Iam
- Center of Excellence in Periodontal Disease and Dental Implant, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Theerapat Chanamuangkon
- Biomaterial Testing Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Rangsini Mahanonda
- Department of Periodontology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Periodontal Disease and Dental Implant, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Wichaya Wisitrasameewong
- Department of Periodontology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Periodontal Disease and Dental Implant, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
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Xie C, Zhang Q, Ye X, Wu W, Cheng X, Ye X, Ruan J, Pan X. Periodontitis-induced neuroinflammation impacts dendritic spine immaturity and cognitive impairment. Oral Dis 2024; 30:2558-2569. [PMID: 37455416 DOI: 10.1111/odi.14674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 06/03/2023] [Accepted: 06/27/2023] [Indexed: 07/18/2023]
Abstract
OBJECTIVE This study investigated the spinal changes in ligature-induced periodontitis and the role of periodontitis in cognitive impairment. METHODS Twenty mice were randomized into the control and chronic periodontitis (CP) groups, with the latter receiving ligature-induced periodontitis. Cognitive performance was assessed by fear conditioning test. Periodontal inflammation and alveolar bone resorption were evaluated by micro-computed tomography and histopathology. The hippocampal microglial activation was evaluated by immunohistochemistry (IHC). The expressions of hippocampal cytokines (TNF-α, iNOS, IL-1β, IL-4, IL-10, and TREM2) were measured by reverse transcription-polymerase chain reaction. The morphology and density of the dendritic spines were determined by Golgi-Cox staining. RESULTS The CP mice reported significant inflammatory cell infiltration and alveolar bone resorption, with marked increases in cytokine levels (TNF-α, iNOS, IL-1β, and TREM2) in the brain. Moreover, the CP mice showed significantly reduced freezing to the conditioned stimulus in the cued and contextual tests, indicating impaired memory. Further analyses revealed, in the hippocampus of the CP mice, enhanced microglial activation, decreased dendritic spine density, and increased proportion of thin dendritic spines. CONCLUSIONS Periodontitis-induced neuroinflammation may impair the cognitive function by activating hippocampal microglia and inducing dendritic spine immaturity.
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Affiliation(s)
- Changfu Xie
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Qiuyang Zhang
- The Third Clinical Medical College, Fujian Medical University, Fuzhou, China
- Fuzhou Second Hospital, Fuzhou, China
| | - Xinyi Ye
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Weiliang Wu
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Xiaojuan Cheng
- Department of Neurology, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China
- Institute of Clinical Neurology, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
| | - Xiaoan Ye
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Jianyong Ruan
- Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China
| | - Xiaodong Pan
- Department of Neurology, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, China
- Institute of Clinical Neurology, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
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Lee YS, Kim AR, Jeon YE, Bak EJ, Yoo YJ. Periodontitis deteriorates renal fibrosis and macrophage infiltration in rats with chronic kidney disease. Oral Dis 2024; 30:1497-1505. [PMID: 36905098 DOI: 10.1111/odi.14561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 03/05/2023] [Accepted: 03/08/2023] [Indexed: 03/12/2023]
Abstract
OBJECTIVE The objective of this study was to examine the effect of periodontitis on renal function and morphology in rats with or without nephrectomy (Nx)-induced chronic kidney disease (CKD). METHODS Rats were divided into sham surgery (Sham), Sham with tooth ligation (ShamL), Nx, and NxL groups. Periodontitis was induced by tooth ligation at 16-week olds. Creatinine, alveolar bone area, and renal histopathology were analyzed at 20-week olds. RESULTS Creatinine did not differ between the Sham and ShamL groups or between the Nx and NxL groups. The ShamL and NxL groups (both p = 0.002) had less alveolar bone area than the Sham group. The NxL group had fewer glomeruli than the Nx group (p < 0.000). The periodontitis groups demonstrated more tubulointerstitial fibrosis (Sham vs. ShamL p = 0.002, Nx vs. NxL p < 0.000) and macrophage infiltration (Sham vs. ShamL p = 0.002, Nx vs. NxL p = 0.006) than the groups without periodontitis. Only the NxL group had greater renal TNFα expression than the Sham group (p < 0.003). CONCLUSIONS These suggest that periodontitis increases renal fibrosis and inflammation in the presence or absence of CKD but does not affect renal function. Periodontitis also increases TNFα expression in the presence of CKD.
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Affiliation(s)
- Youn Soo Lee
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul, South Korea
- Department of Dentistry, The Graduate School, Yonsei University, Seoul, South Korea
| | - Ae Ri Kim
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul, South Korea
- BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Yeong-Eui Jeon
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul, South Korea
| | - Eun-Jung Bak
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul, South Korea
| | - Yun-Jung Yoo
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul, South Korea
- Department of Dentistry, The Graduate School, Yonsei University, Seoul, South Korea
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Liu A, Hayashi M, Ohsugi Y, Katagiri S, Akira S, Iwata T, Nakashima T. The IL-33/ST2 axis is protective against acute inflammation during the course of periodontitis. Nat Commun 2024; 15:2707. [PMID: 38548743 PMCID: PMC10978877 DOI: 10.1038/s41467-024-46746-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 03/07/2024] [Indexed: 04/01/2024] Open
Abstract
Periodontitis, which is induced by repeated bacterial invasion and the ensuing immune reactions that follow, is the leading cause of tooth loss. Periodontal tissue is comprised of four different components, each with potential role in pathogenesis, however, most studies on immune responses focus on gingival tissue. Here, we present a modified ligature-induced periodontitis model in male mice to analyze the pathogenesis, which captures the complexity of periodontal tissue. We find that the inflammatory response in the peri-root tissues and the expression of IL-6 and RANKL by Thy-1.2- fibroblasts/stromal cells are prominent throughout the bone destruction phase, and present already at an early stage. The initiation phase is characterized by high levels of ST2 (encoded by Il1rl1) expression in the peri-root tissue, suggesting that the IL-33/ST2 axis is involved in the pathogenesis. Both Il1rl1- and Il33-deficient mice exhibit exacerbated bone loss in the acute phase of periodontitis, along with macrophage polarization towards a classically activated phenotype and increased neutrophil infiltration, indicating a protective role of the IL-33/ST2 axis in acute inflammation. Thus, our findings highlight the hidden role of the peri-root tissue and simultaneously advance our understanding of the etiology of periodontitis via implicating the IL-33/ST2 axis.
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Affiliation(s)
- Anhao Liu
- Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Mikihito Hayashi
- Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Yujin Ohsugi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Sayaka Katagiri
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Shizuo Akira
- Laboratory of Host Defense, IFReC,Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Takanori Iwata
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan
| | - Tomoki Nakashima
- Faculty of Dentistry, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan.
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Li F, Liu X, Li M, Wu S, Le Y, Tan J, Zhu C, Wan Q. Inhibition of PKM2 suppresses osteoclastogenesis and alleviates bone loss in mouse periodontitis. Int Immunopharmacol 2024; 129:111658. [PMID: 38359663 DOI: 10.1016/j.intimp.2024.111658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/29/2024] [Accepted: 02/04/2024] [Indexed: 02/17/2024]
Abstract
BACKGROUND Chronic periodontitis triggers an increase in osteoclastogenesis, with glycolysis playing a crucial role in this process. Pyruvate kinase M2 (PKM2) is a critical enzyme involved in glycolysis and pyruvate metabolism. Yet, the precise function of PKM2 in osteoclasts and their formation remains unclear and requires further investigation. METHODS Bioinformatics was used to investigate critical biological processes in osteoclastogenesis. In vitro, osteoclastogenesis was analyzed using tartrate-resistant acid phosphatase (TRAP) staining, phalloidin staining, quantitative real‑time PCR (RT-qPCR), and Western blotting. Small interfering RNA (siRNA) of PKM2 and Shikonin, a specific inhibitor of PKM2, were used to verify the role of PKM2 in osteoclastogenesis. The mouse model of periodontitis was used to assess the effect of shikonin on bone loss. Analyses included micro computed tomography, immunohistochemistry, flow cytometry, TRAP staining and HE staining. RESULTS Bioinformatic analysis revealed a significant impact of glycolysis and pyruvate metabolism on osteoclastogenesis. Inhibition of PKM2 leads to a significant reduction in osteoclastogenesis. In vitro, co-culture of the heat-killed Porphyromonas gingivalis significantly promoted osteoclastogenesis, concomitant with an increased PKM2 expression in osteoclasts. Shikonin weakened the promoting effect of porphyromonas gingivalis on osteoclastogenesis. In vivo experiments demonstrated that inhibition of PKM2 by shikonin alleviated bone loss induced by periodontitis, suppressed excessive osteoclastogenesis in alveolar bone, and reduced tissue inflammation to some extent. CONCLUSION PKM2 inhibition by shikonin, a specific inhibitor of this enzyme, attenuated osteoclastogenesis and bone resorption in periodontitis. Shikonin appears to be a promising therapeutic agent for treating periodontitis.
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Affiliation(s)
- Feng Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Xinyuan Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Mingjuan Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Shuxuan Wu
- Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - Yushi Le
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Jingjing Tan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Chongjie Zhu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Qilong Wan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
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Estarreja J, Pimenta AC, Botelho J, Vilares AM, Mendes JJ, Rocha J, Pinto R, Mateus V, Machado V. Blood count, endocrine, immunologic, renal, and hepatic markers in a case-control animal study of induced periodontitis in female rodents. Front Physiol 2024; 15:1327399. [PMID: 38444766 PMCID: PMC10912185 DOI: 10.3389/fphys.2024.1327399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/31/2024] [Indexed: 03/07/2024] Open
Abstract
Introduction: Periodontitis is a non-communicable chronic inflammatory disease with a systemic burden. Animal models of induced periodontitis help elucidate the mechanisms by which periodontal inflammation drives systemic effects. Studying this systemic involvement over longer follow-up periods may provide a strong foundation for future research on the association between diseases and periodontitis, particularly in female rats. Therefore, we aimed to compare blood, endocrine, immunologic, renal, and hepatic markers in a rat model of induced periodontitis in females with their control counterparts. Methods: Experimental periodontitis was induced in 20 female Wistar rats by the application and maintenance of silk ligatures on the upper molars. The rats were then assessed for macroscopical analysis, complete blood count, and biochemical, endocrine, and immunologic markers at 21, 28, 42, and 56 days. Results: Chronic periodontal inflammation was observed after 42 days of exposure to the ligatures. Additionally, it was also possible to notice significant systemic manifestations, such as the reduction of triiodothyronine and thyroxine levels, along with an increase in the expression of alkaline phosphatase, gamma-glutamyl transpeptidase, and lactate dehydrogenase. Discussion: The study's findings imply that certain changes can be underscored to highlight a reduced risk of conception. Notably, previous investigations have indicated that subfertile women exhibit lower levels of thyroid hormones and elevated lactate dehydrogenase expression. Despite the absence of preclinical data delineating a possible association between periodontitis and female infertility, the results of this study may prove to be a crucial contribution to both the scientific and medical fields.
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Affiliation(s)
- João Estarreja
- H&TRC—Health and Technology Research Center, ESTeSL—Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Lisbon, Portugal
| | - Ana Clara Pimenta
- Clinical Research Unit (CRU), Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health & Science, Almada, Portugal
| | - João Botelho
- Clinical Research Unit (CRU), Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health & Science, Almada, Portugal
| | - Arminda Maria Vilares
- Laboratório de Fisiologia e Bioquímica do Exercício, Universidade de Lisboa Faculdade de Motricidade Humana, Lisboa, Portugal
| | - José João Mendes
- Clinical Research Unit (CRU), Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health & Science, Almada, Portugal
| | - João Rocha
- iMed.ULisboa, Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
| | - Rui Pinto
- iMed.ULisboa, Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
- Joaquim Chaves Saúde, Joaquim Chaves Laboratório de Análises Clínicas, Miraflores, Portugal
| | - Vanessa Mateus
- H&TRC—Health and Technology Research Center, ESTeSL—Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Lisbon, Portugal
- iMed.ULisboa, Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
| | - Vanessa Machado
- Clinical Research Unit (CRU), Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health & Science, Almada, Portugal
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Zhao Y, Su J, Xu CY, Li YB, Hu T, Li Y, Yang L, Zhao Q, Zhang WY. Establishment of a mandible defect model in rabbits infected with multiple bacteria and bioinformatics analysis. Front Bioeng Biotechnol 2024; 12:1350024. [PMID: 38282893 PMCID: PMC10811100 DOI: 10.3389/fbioe.2024.1350024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 01/04/2024] [Indexed: 01/30/2024] Open
Abstract
Objective: A model of chronic infectious mandibular defect (IMD) caused by mixed infection with Staphylococcus aureus and Pseudomonas aeruginosa was established to explore the occurrence and development of IMD and identify key genes by transcriptome sequencing and bioinformatics analysis. Methods: S. aureus and P. aeruginosa were diluted to 3 × 108 CFU/mL, and 6 × 3 × 3 mm defects lateral to the Mandibular Symphysis were induced in 28 New Zealand rabbits. Sodium Morrhuate (0.5%) and 50 μL bacterial solution were injected in turn. The modeling was completed after the bone wax closed; the effects were evaluated through postoperative observations, imaging and histological analyses. Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway, and protein‒protein interaction (PPI) network analyses were performed to investigate the function of the differentially expressed genes (DEGs). Results: All rabbits showed characteristics of infection. The bacterial cultures were positive, and polymerase chain reaction (PCR) was used to identify S. aureus and P. aeruginosa. Cone beam CT and histological analyses showed inflammatory cell infiltration, pus formation in the medullary cavity, increased osteoclast activity in the defect area, and blurring at the edge of the bone defect. Bioinformatics analysis showed 1,804 DEGs, 743 were upregulated and 1,061 were downregulated. GO and KEGG analyses showed that the DEGs were enriched in immunity and osteogenesis inhibition, and the core genes identified by the PPI network were enriched in the Hedgehog pathway, which plays a role in inflammation and tissue repair; the MEF2 transcription factor family was predicted by IRegulon. Conclusion: By direct injection of bacterial solution into the rabbit mandible defect area, the rabbit chronic IMD model was successfully established. Based on the bioinformatics analysis, we speculate that the Hedgehog pathway and the MEF2 transcription factor family may be potential intervention targets for repairing IMD.
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Affiliation(s)
- Yuan Zhao
- Department of Stomatology, 920th Hospital of Joint Logistics Support Force of People’s Liberation Army of China, Kunming, China
- Postgraduate Research Institute, Kunming Medical University, Kunming, China
| | - Jun Su
- Department of Stomatology, 920th Hospital of Joint Logistics Support Force of People’s Liberation Army of China, Kunming, China
| | - Chong-yan Xu
- Department of Stomatology, 920th Hospital of Joint Logistics Support Force of People’s Liberation Army of China, Kunming, China
- Postgraduate Research Institute, Kunming Medical University, Kunming, China
| | - Yan-bo Li
- Postgraduate Research Institute, Kunming Medical University, Kunming, China
| | - Tong Hu
- Department of Stomatology, 920th Hospital of Joint Logistics Support Force of People’s Liberation Army of China, Kunming, China
- Postgraduate Research Institute, Kunming Medical University, Kunming, China
| | - Yi Li
- Department of Stomatology, 920th Hospital of Joint Logistics Support Force of People’s Liberation Army of China, Kunming, China
- Postgraduate Research Institute, Kunming Medical University, Kunming, China
| | - Li Yang
- Department of Stomatology, 920th Hospital of Joint Logistics Support Force of People’s Liberation Army of China, Kunming, China
| | - Qiang Zhao
- Department of Stomatology, 920th Hospital of Joint Logistics Support Force of People’s Liberation Army of China, Kunming, China
| | - Wen-yun Zhang
- Department of Stomatology, 920th Hospital of Joint Logistics Support Force of People’s Liberation Army of China, Kunming, China
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Lima Teixeira JF, Henning P, Cintra Magalhães FA, Coletto-Nunes G, Floriano-Marcelino T, Westerlund A, Movérare-Skrtic S, Oliveira GJPL, Lerner UH, Souza PPC. Osteoprotective effect by interleukin-4 (IL-4) on lipoprotein-induced periodontitis. Cytokine 2023; 172:156399. [PMID: 37898012 DOI: 10.1016/j.cyto.2023.156399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 09/15/2023] [Accepted: 10/05/2023] [Indexed: 10/30/2023]
Abstract
Lipoproteins are immunostimulatory bacterial components suggested to participate in inflammation-induced bone loss in periodontal disease through stimulation of osteoclast differentiation. Toll-like receptor 2 activation by Pam2CSK4 (PAM2), known to mimic bacterial lipoproteins, was previously shown to enhance periodontal bone resorption in mice. The anti-inflammatory cytokine interleukin-4 (IL-4) is a known inhibitor of RANKL-induced bone resorption in vitro. Here, we have investigated whether IL-4 could decrease PAM2-induced periodontal bone loss and osteoclastogenesis in vivo. In a model of periodontitis induced by gingival injections of PAM2 in mice, concomitant injections of IL-4 reduced bone loss. Histologically, IL-4 reduced the recruitment of inflammatory cells and the formation of TRAP+ osteoclasts stimulated by PAM2. Mouse bone marrow macrophages (BMMs) and neonatal calvarial osteoblasts were used to assess the effect of IL-4 on PAM2-induced osteoclastogenesis in vitro. In RANKL-primed BMMs stimulated by PAM2 Nfatc1, Ctsk, and Acp5 gene expression was up-regulated and resulted in robust formation of TRAP+ multinucleated osteoclasts, effects which were impaired by IL-4. These effects were mediated by impairment in PAM2-induced c-fos expression. In primary calvarial osteoblast cultures, IL-4 decreased PAM2-induced Tnfsf11 (encoding RANKL) mRNA and enhanced Tnfrsf11b (encoding OPG) expression. Our data demonstrate that the osteoprotective effect by IL-4 on lipoprotein-induced periodontal disease occurs through the inhibition of osteoclastogenesis by three mechanisms, one by acting directly on osteoclast progenitors, another by acting indirectly through decreasing the expression of osteoclast-regulating cytokines in osteoblasts and a third by decreasing inflammation.
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Affiliation(s)
- Jorge F Lima Teixeira
- Department of Pathology and Physiology, School of Dentistry at Araraquara, Univ. Est. Paulista - UNESP, Araraquara, Brazil
| | - Petra Henning
- Sahlgrenska Osteoporosis Centre and Centre for Bone and Arthritis Research at Department of Internal Medicine and Clinical Nutrition, Institute for Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | | | - Glaucia Coletto-Nunes
- Department of Pathology and Physiology, School of Dentistry at Araraquara, Univ. Est. Paulista - UNESP, Araraquara, Brazil
| | - Thais Floriano-Marcelino
- Department of Pathology and Physiology, School of Dentistry at Araraquara, Univ. Est. Paulista - UNESP, Araraquara, Brazil
| | - Anna Westerlund
- Sahlgrenska Osteoporosis Centre and Centre for Bone and Arthritis Research at Department of Internal Medicine and Clinical Nutrition, Institute for Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Sofia Movérare-Skrtic
- Sahlgrenska Osteoporosis Centre and Centre for Bone and Arthritis Research at Department of Internal Medicine and Clinical Nutrition, Institute for Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Guilherme J P L Oliveira
- Department of Periodontology and Implantodontology, Dental School, Federal University of Uberlândia - UFU, Uberlândia, Brazil
| | - Ulf H Lerner
- Sahlgrenska Osteoporosis Centre and Centre for Bone and Arthritis Research at Department of Internal Medicine and Clinical Nutrition, Institute for Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Pedro Paulo C Souza
- Innovation in Biomaterials Laboratory (iBioM), Faculty of Dentistry, Federal University of Goiás - UFG, Goiânia, Brazil.
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Hernández Martínez CDJ, Felix Silva P, Salvador SL, Messora M, Palioto DB. Chronological analysis of periodontal bone loss in experimental periodontitis in mice. Clin Exp Dent Res 2023; 9:1009-1020. [PMID: 37997536 PMCID: PMC10728515 DOI: 10.1002/cre2.806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Revised: 10/04/2023] [Accepted: 10/12/2023] [Indexed: 11/25/2023] Open
Abstract
OBJECTIVES Periodontal disease is understood to be a result of dysbiotic interactions between the host and the biofilm, causing a unique reaction for each individual, which in turn characterizes their susceptibility. The objective of this study was to chronologically evaluate periodontal tissue destruction induced by systemic bacterial challenge in known susceptible (BALB/c) and resistant (C57BL/6) mouse lineages. MATERIAL AND METHODS Animals, 6-8 weeks old, were allocated into three experimental groups: Negative control (C), Gavage with sterile carboxymethyl cellulose 2%-without bacteria (Sham), and Gavage with carboxymethyl cellulose 2% + Porphyromonas gingivalis (Pg-W83). Before infection, all animals received antibiotic treatment (sulfamethoxazole/trimethoprim, 400/80 mg/5 mL) for 7 days, followed by 3 days of rest. Microbial challenge was performed 3 times per week for 1, 2, or 3 weeks. After that, the animals were kept until the completion of 42 days of experiments, when they were euthanized. The alveolar bone microarchitecture was assessed by computed microtomography. RESULTS Both C57BL/6 and BALB/c mice exhibited significant bone volume loss and lower trabecular thickness as well as greater bone porosity compared to the (C) and (Sham) groups after 1 week of microbial challenge (p < .001). When comparing only the gavage groups regarding disease implantation, time and lineage, it was possible to observe that within 1 week of induction the disease was more established in BALB/c than in C57BL/6 (p < .05). CONCLUSIONS Our results reflected that after 1 week of microbial challenge, there was evidence of alveolar bone loss for both lineages, with the loss observed in BALB/c mice being more pronounced.
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Affiliation(s)
- Cristhiam de J. Hernández Martínez
- Department of Oral & Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental SchoolUniversity of Sao Paulo—USPRibeirão Preto SPBrazil
| | - Pedro Felix Silva
- Department of Oral & Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental SchoolUniversity of Sao Paulo—USPRibeirão Preto SPBrazil
| | - Sergio L. Salvador
- Department of Clinical Analyses, School of Pharmaceutical Sciences of Ribeirao PretoUniversity of Sao Paulo—USPRibeirão Preto SPBrazil
| | - Michel Messora
- Department of Oral & Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental SchoolUniversity of Sao Paulo—USPRibeirão Preto SPBrazil
| | - Daniela B. Palioto
- Department of Oral & Maxillofacial Surgery and Periodontology, Ribeirão Preto Dental SchoolUniversity of Sao Paulo—USPRibeirão Preto SPBrazil
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Lee Y, Lee JE, Lee AR, Choi EY, Choi IS, Kim SJ. Nifedipine attenuates alveolar bone destruction and improves trabecular microarchitectures in mice with experimental periodontitis. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2023; 396:3627-3633. [PMID: 37278771 DOI: 10.1007/s00210-023-02557-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 05/26/2023] [Indexed: 06/07/2023]
Abstract
Studies have shown that nifedipine exerts anti-inflammatory and immunosuppressive actions in addition to being a calcium channel blocker. The present study was performed to explore the influence of nifedipine on alveolar bone destruction in mice with experimental periodontitis by evaluating morphological information acquired from micro-computed tomography analysis. BALB/c mice were randomly assigned into four groups: control (C) group; experimental periodontitis (E) group; experimental periodontitis + 10 mg/kg dose of nifedipine (EN10) group; and experimental periodontitis + 50 mg/kg dose of nifedipine (EN50) group. Periodontitis was induced by oral inoculation with Porphyromonas gingivalis over a 3-week time period. Nifedipine significantly mitigated the loss of alveolar bone height as well as increase of root surface exposure induced by experimental periodontitis. Additionally, the reduction in the bone volume fraction associated with P. gingivalis infection was significantly recovered upon nifedipine treatment. Further, nifedipine attenuated P. gingivalis-induced deteriorations in the trabeculae-associated parameters. Significant difference was evident between Groups EN10 and EN50 in both the extent of alveolar bone loss and microstructural parameters assessed, except trabecular separation and trabecular number. Nifedipine appeared to have good performance in ameliorating bone loss in mice with induced periodontitis. Nifedipine may be utilized in the clinical management of periodontitis, though further research is indicated to verify the therapeutic effect.
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Affiliation(s)
- Yohan Lee
- Department of Periodontology, School of Dentistry, Pusan National University, Yangsan, Gyeongsangnam-Do, Korea
| | - Jung Eun Lee
- Dental and Life Science Institute, Pusan National University, Yangsan, Gyeongsangnam-Do, Korea
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - Ah Rim Lee
- Dental and Life Science Institute, Pusan National University, Yangsan, Gyeongsangnam-Do, Korea
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - Eun-Young Choi
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - In Soon Choi
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - Sung-Jo Kim
- Department of Periodontology, School of Dentistry, Pusan National University, Yangsan, Gyeongsangnam-Do, Korea.
- Dental and Life Science Institute, Pusan National University, Yangsan, Gyeongsangnam-Do, Korea.
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11
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Li S, Zeng W, Liu G, Zang J, Yu X. Evaluation of morphological, histological, and immune-related cellular changes in ligature-induced experimental periodontitis in mice. J Dent Sci 2023; 18:1716-1722. [PMID: 37799858 PMCID: PMC10547956 DOI: 10.1016/j.jds.2023.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/02/2023] [Indexed: 01/13/2023] Open
Abstract
Background/purpose The ligature-induced periodontitis model is an effective approach to induce inflammation and bone loss similar to that of human periodontitis. Previous clinical and in vitro studies have shown the involvement of lymphocytes in periodontitis, while, the local and systemic profile of immune cells associated with periodontitis in the ligature-induced periodontitis model in mice remains unclear. Materials and methods Experimental periodontitis was constructed in mice by ligating around the maxillary second molars for 14 and 28 days, respectively. Alveolar bone loss was assessed by micro-computed tomography (micro-CT). Hematoxylin and eosin (H&E) and tartrate-resistant acid phosphatase (TRAP) staining were used to evaluate the histological changes in the periodontal tissues. B and T cells in the cervical lymph nodes, spleen, and peripheral blood were analyzed by flow cytometry. Results The 14-day ligation effectively induced significant periodontal inflammation and alveolar bone loss in C57BL/6J mice, which were progressive and maintained for a relatively long-term period until day 28. In addition, CD3+ T cells and CD19+ B cells were the dominant population in both health and disease, and the B cell population within the cervical lymph nodes (LN) increased significantly under periodontitis condition, while, no significant differences of the T and B cell population among the spleen and peripheral blood were observed. Conclusion The ligature-induced periodontitis mice model was established to perform a longitudinal assessment of changes in periodontal tissues morphologically and histologically, meanwhile, explore the local and systemic changes of the predominant immune-associated cells.
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Affiliation(s)
- Shiyi Li
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Wenmin Zeng
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Guojing Liu
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Jing Zang
- Department of Periodontology, Peking University Third Hospital, Beijing, China
| | - Xiaoqian Yu
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
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12
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Yoon H, Jung BH, Yoo KY, Lee JB, Um HS, Chang BS, Lee JK. Temporal changes of periodontal tissue pathology in a periodontitis animal model. J Periodontal Implant Sci 2023; 53:248-258. [PMID: 36468486 PMCID: PMC10465809 DOI: 10.5051/jpis.2203420171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/04/2022] [Accepted: 10/19/2022] [Indexed: 08/29/2023] Open
Abstract
PURPOSE This study aimed to characterize the early stages of periodontal disease and determine the optimal period for its evaluation in a mouse model. The association between the duration of ligation and its effect on the dentogingival area in mice was evaluated using micro-computed tomography (CT) and histological analysis. METHODS Ninety mice were allocated to an untreated control group or a ligation group in which periodontitis was induced by a 6-0 silk ligation around the left second maxillary molar. Mice were sacrificed at 1, 2, 3, 4, 5, 8, 11, and 14 days after ligature placement. Alveolar bone destruction was evaluated using micro-CT. Histological analysis was performed to assess the immune-inflammatory processes in the periodontal tissue. RESULTS No significant difference in alveolar bone loss was found compared to the control group until day 3 after ligature placement, and a gradual increase in alveolar bone loss was observed from 4 to 8 days following ligature placement. No significant between-group differences were observed after 8 days. The histological analysis demonstrated that the inflammatory response was evident from day 4. CONCLUSIONS Our findings in a mouse model provide experimental evidence that ligature-induced periodontitis models offer a consistent progression of disease with marginal attachment down-growth, inflammatory infiltration, and alveolar bone loss.
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Affiliation(s)
- Hyunpil Yoon
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Bo Hyun Jung
- Department of Anatomy and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Ki-Yeon Yoo
- Department of Anatomy and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Jong-Bin Lee
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Heung-Sik Um
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Beom-Seok Chang
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea
| | - Jae-Kwan Lee
- Department of Periodontology and Research Institute of Oral Sciences, Gangneung-Wonju National University College of Dentistry, Gangneung, Korea.
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13
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Helal MB, Alsherif AA. The ameliorating role of epithelial cell rests of Malassez in the alleviation of experimentally-induced periodontitis in rats. Arch Oral Biol 2023; 149:105658. [PMID: 36867954 DOI: 10.1016/j.archoralbio.2023.105658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 02/16/2023] [Accepted: 02/19/2023] [Indexed: 02/25/2023]
Abstract
OBJECTIVE The present study aimed to investigate the effect of experimentally-induced periodontitis on epithelial cell rests of Malassez (ERM) distribution and its subsequent role in regenerating periodontal ligament (PDL). DESIGN The study included 60 rats, aged seven months, randomly and equally divided into two groups: Group I, the control group, and Group II, the experimental group, in which ligature-periodontitis was induced. Ten rats from each group were euthanized at 1, 2, and 4 weeks. For ERM detection, specimens were processed for histological and immunohistochemical examination of cytokeratin-14. Additionally, specimens were prepared for the transmission electron microscope. RESULTS Group I demonstrated well-organized PDL fibers with few ERM clumps close to the cervical root portion. In contrast, one week after periodontitis induction, Group II showed marked degeneration, a damaged cluster of ERM cells, narrowing of the PDL space, and early signs of PDL hyalinization. After two weeks, a disorganized PDL was observed with the detection of small ERM clumps enclosing very few cells. After four weeks, PDL fibers were reorganized, and ERM clusters increased significantly. Notably, ERM cells were positive for CK14 in all groups. CONCLUSION Early-stage ERM may be affected by periodontitis. However, ERM is capable of recovering its putative role in PDL maintenance.
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Affiliation(s)
| | - Aya Anwar Alsherif
- Lecturer of Oral Biology, Faculty of Dentistry, Tanta University, Egypt.
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14
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Chen YW, Wu GH, Lee BS, Liu CT, Li HY, Cheng SJ, Kuo WT, Jeng JH, Chang PC, Lin CP, Chou HYE, Hou HH. Third-generation sequencing-selected Scardovia wiggsiae promotes periodontitis progression in mice. J Periodontal Res 2023; 58:155-164. [PMID: 36451314 DOI: 10.1111/jre.13077] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 08/01/2022] [Accepted: 11/15/2022] [Indexed: 12/03/2022]
Abstract
BACKGROUNDS Periodontitis is an oral-bacteria-directed disease that occurs worldwide. Currently, periodontal pathogens are mostly determined using traditional culture techniques, next-generation sequencing, and microbiological screening system. In addition to the well-known and cultivatable periodontal bacteria, we aimed to discover a novel periodontal pathogen by using DNA sequencing and investigate its role in the progression of periodontitis. OBJECTIVE This study identified pathogens from subgingival dental plaque in patients with periodontitis by using the Oxford Nanopore Technology (ONT) third-generation sequencing system and validated the impact of selected pathogen in periodontitis progression by ligature-implanted mice. METHODS Twenty-five patients with periodontitis and 25 healthy controls were recruited in this study. Subgingival plaque samples were collected for metagenomic analysis. The ONT third-generation sequencing system was used to confirm the dominant bacteria. A mouse model with ligature implantation and bacterial injection verified the pathogenesis of periodontitis. Neutrophil infiltration and osteoclast activity were evaluated using immunohistochemistry and tartrate-resistant acid phosphatase assays in periodontal tissue. Gingival inflammation was evaluated using pro-inflammatory cytokines in gingival crevicular fluids. Alveolar bone destruction in the mice was evaluated using micro-computed tomography and hematoxylin and eosin staining. RESULTS Scardovia wiggsiae (S. wiggsiae) was dominant in the subgingival plaque of the patients with periodontitis. S. wiggsiae significantly deteriorated ligature-induced neutrophil infiltration, osteoclast activation, alveolar bone destruction, and the secretion of interleukin-6, monocyte chemoattractant protein-1, and tumor necrosis factor-α in the mouse model. CONCLUSION Our metagenome results suggested that S. wiggsiae is a dominant flora in patients with periodontitis. In mice, the induction of neutrophil infiltration, proinflammatory cytokine secretion, osteoclast activation, and alveolar bone destruction further verified the pathogenic role of S. wiggsiae in the progress of periodontitis. Future studies investigating the metabolic interactions between S. wiggsiae and other periodontopathic bacteria are warranted.
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Affiliation(s)
- Yi-Wen Chen
- Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Guan-Hua Wu
- Graduate Institute of Oral Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Bor-Shiunn Lee
- Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Oral Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chung-Te Liu
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Huei-Ying Li
- Medical Microbiota Center of the First Core Laboratory, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Shih-Jung Cheng
- Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Oral Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Wei-Ting Kuo
- Graduate Institute of Oral Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Jiiang-Huei Jeng
- School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Dentistry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Po-Chun Chang
- Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan.,School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chun-Pin Lin
- Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Han-Yi E Chou
- Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan.,Graduate Institute of Oral Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hsin-Han Hou
- Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan.,Graduate Institute of Oral Biology, College of Medicine, National Taiwan University, Taipei, Taiwan
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15
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Yamamoto A, Kambara Y, Fujiwara H. Impact of oral microbiota on pathophysiology of GVHD. Front Immunol 2023; 14:1132983. [PMID: 36969182 PMCID: PMC10033631 DOI: 10.3389/fimmu.2023.1132983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 02/23/2023] [Indexed: 03/29/2023] Open
Abstract
Allogeneic transplantation of hematopoietic cells is the only curative therapy for several hematopoietic disease in which patients receive cytotoxic conditioning regimens followed by infusion of hematopoietic stem cells. Although the outcomes have improved over the past decades, graft-versus-host-disease (GVHD), the most common life-threatening complication, remains a major cause of non-relapse morbidity and mortality. Pathophysiology of acute GVHD characterized by host antigen-presenting cells after tissue damage and donor T-cells is well studied, and additionally the importance of recipient microbiota in the intestine is elucidated in the GVHD setting. Oral microbiota is the second most abundant bacterial flora in the body after the intestinal tract, and it is related to chronic inflammation and carcinogenesis. Recently, composition of the oral microbiome in GVHD related to transplantation has been characterized and several common patterns, dysbiosis and enrichment of the specific bacterial groups, have been reported. This review focuses on the role of the oral microbiota in the context of GVHD.
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Affiliation(s)
- Akira Yamamoto
- Department of Hematology and Oncology, Okayama University Hospital, Okayama, Japan
| | - Yui Kambara
- Department of Hematology and Oncology and Respiratory Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hideaki Fujiwara
- Department of Hematology and Oncology, Okayama University Hospital, Okayama, Japan
- *Correspondence: Hideaki Fujiwara,
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16
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de Almeida JM, de Araujo NJ, Matheus HR, de Abreu Furquim EM, Piovezan BR, Fiorin LG, Ervolino E. Hand instrumentation provides improved tissue response over ultrasonic scaler and substantiates safe dental practice: An in vivo study in rats. PLoS One 2023; 18:e0284497. [PMID: 37167233 PMCID: PMC10174520 DOI: 10.1371/journal.pone.0284497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 04/02/2023] [Indexed: 05/13/2023] Open
Abstract
OBJECTIVE The aim of this study was to evaluate the effectiveness of hand debridement (HD) versus ultrasonic dental scaler (UDS) for the treatment of experimental periodontitis (EP) in rats. MATERIAL AND METHODS Thirty 3-month-old male rats were used. EP was induced around the mandibular first molars (right and left). Seven days after induction, the treatments with either HD (n = 30) or UDS (n = 30) were randomly performed in each molar. Euthanasia were performed at 7, 15, and 30 days after treatment. Histometric (percentage of bone in the furcation [PBF]), histopathological, and immunohistochemical (for detection of tartrate-resistant acid phosphatase [TRAP] and osteocalcin [OCN]). Parametric data (PBF and TRAP) was analyzed by One-way ANOVA followed by Tukey's post-test. OCN was analyzed by Kruskal-Wallis followed by Student-Newman-Keuls post-test. The level of significance was 5%. RESULTS Group HD presented higher PBF and lower TRAP-immunolabeling at 30 days as compared with UDS in the same period (p≤0.05). Group HD presented higher OCN immunolabeling at 30 days as compared with 7 and 15 days (p≤0.05). Persistent and exacerbated inflammatory process was observed in some specimens from group UDS at 30 days, as well as the bone trabeculae presented irregular contour, surrounded by many active osteoclasts. CONCLUSION Nonsurgical periodontal therapy with HD resulted in higher PBF and lower expression of TRAP as compared with UDS. Also, HD increased the expression of OCN over time.
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Affiliation(s)
- Juliano Milanezi de Almeida
- Department of Diagnosis and Surgery-Periodontics Division, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
- Nucleus of Study and Research in Periodontology and Implantology (NEPPI), School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
| | - Nathália Januario de Araujo
- Department of Diagnosis and Surgery-Periodontics Division, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
- Nucleus of Study and Research in Periodontology and Implantology (NEPPI), School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
| | - Henrique Rinaldi Matheus
- Department of Diagnosis and Surgery-Periodontics Division, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
- Nucleus of Study and Research in Periodontology and Implantology (NEPPI), School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
| | - Elisa Mara de Abreu Furquim
- Department of Diagnosis and Surgery-Periodontics Division, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
- Nucleus of Study and Research in Periodontology and Implantology (NEPPI), School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
| | - Bianca Rafaeli Piovezan
- Department of Diagnosis and Surgery-Periodontics Division, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
- Nucleus of Study and Research in Periodontology and Implantology (NEPPI), School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
| | - Luiz Guilherme Fiorin
- Department of Diagnosis and Surgery-Periodontics Division, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
- Nucleus of Study and Research in Periodontology and Implantology (NEPPI), School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
| | - Edilson Ervolino
- Nucleus of Study and Research in Periodontology and Implantology (NEPPI), School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
- Department of Basic Science, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
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17
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Local and systemic effects produced in different models of experimental periodontitis in mice: a systematic review. Arch Oral Biol 2022; 143:105528. [DOI: 10.1016/j.archoralbio.2022.105528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 12/09/2022]
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18
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Systemic Dietary Hesperidin Modulation of Osteoclastogenesis, Bone Homeostasis and Periodontal Disease in Mice. Int J Mol Sci 2022; 23:ijms23137100. [PMID: 35806105 PMCID: PMC9266620 DOI: 10.3390/ijms23137100] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 11/17/2022] Open
Abstract
This study aimed to evaluate the effects of hesperidin (HE) on in vitro osteoclastogenesis and dietary supplementation on mouse periodontal disease and femoral bone phenotype. RAW 264.7 cells were stimulated with RANKL in the presence or absence of HE (1, 100 or 500 µM) for 5 days, and evaluated by TRAP, TUNEL and Western Blot (WB) analyses. In vivo, C57BL/6 mice were given HE via oral gavage (125, 250 and 500 mg/kg) for 4 weeks. A sterile silk ligature was placed between the first and second right maxillary molars for 10 days and microcomputed tomography (μCT), histopathological and immunohistochemical evaluation were performed. Femoral bones subjected or not to dietary HE (500 mg/kg) for 6 and 12 weeks were evaluated using μCT. In vitro, HE 500 µM reduced formation of RANKL-stimulated TRAP-positive(+) multinucleated cells (500 µM) as well as c-Fos and NFATc1 protein expression (p < 0.05), markers of osteoclasts. In vivo, dietary HE 500 mg/kg increased the alveolar bone resorption in ligated teeth (p < 0.05) and resulted in a significant increase in TRAP+ cells (p < 0.05). Gingival inflammatory infiltrate was greater in the HE 500 mg/kg group even in the absence of ligature. In femurs, HE 500 mg/kg protected trabecular and cortical bone mass at 6 weeks of treatment. In conclusion, HE impaired in vitro osteoclastogenesis, but on the contrary, oral administration of a high concentration of dietary HE increased osteoclast numbers and promoted inflammation-induced alveolar bone loss. However, HE at 500 mg/kg can promote a bone-sparing effect on skeletal bone under physiological conditions.
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19
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Wang Y, Deng J, Zhang T, Hua Y, Wang Y, Zhang Q, Jiao T, Li C, Zhang X. A Study on the Use of Phase Transition Lysozyme-Loaded Minocycline Hydrochloride in the Local Treatment of Chronic Periodontitis. ACS APPLIED BIO MATERIALS 2022; 5:3146-3157. [PMID: 35713307 DOI: 10.1021/acsabm.2c00079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Periodontitis is the most important oral disease causing human tooth loss. Although supragingival and subgingival scaling is the main strategy of periodontitis clinical treatments, drug treatment has an indispensable auxiliary role to some degree. Periodontitis medical treatment is divided into systemically administered treatments and local periodontally administered treatments. Compared with systemic administration, local administration can increase local drug concentrations, reduce dosages, and prolong action times while also improving patient compliance and avoiding possible adverse effects due to systemic administration responses. However, some studies show that minocycline ointment, a clinical local drug commonly used in periodontal pockets, has an unstable release rate; 80% of the drug is usually released within 2-3 days after pocket placement. This release is not conducive to controlling periodontal infection and may hinder the periodontal tissue repair and regeneration. Therefore, choosing a suitable carrier for minocycline hydrochloride is necessary to control its local release in periodontal tissue. Phase transition lysozyme (PTL) has been widely used in many studies and the development of macromolecular carrier material, and we selected PTL as the carrier for minocycline hydrochloride drugs because of its good biocompatibility, good drug-carrying capacity, and stable release. Due to its release characteristics and simple preparation, PTL is a promising carrier material.
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Affiliation(s)
- Yao Wang
- School of Dentistry, Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China
| | - Jingjing Deng
- School of Dentistry, Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China
| | - Tingting Zhang
- School of Dentistry, Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China
| | - Ye Hua
- Department of Stomatology, Tianjin Union Medical Center, Tianjin 300121, China
| | - Yuanyuan Wang
- School of Dentistry, Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China
| | - Qian Zhang
- School of Dentistry, Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China
| | - Tiejun Jiao
- School of Dentistry, Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China
| | - Changyi Li
- School of Dentistry, Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China
| | - Xu Zhang
- School of Dentistry, Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, China.,Institute of Stomatology, Tianjin Medical University, Tianjin 300070, China
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Cheat B, Torrens C, Foda A, Baroukh B, Sadoine J, Slimani L, Witko-Sarsat V, Huck O, Gosset M, Bouchet J. NLRP3 Is Involved in Neutrophil Mobilization in Experimental Periodontitis. Front Immunol 2022; 13:839929. [PMID: 35281020 PMCID: PMC8905524 DOI: 10.3389/fimmu.2022.839929] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 02/01/2022] [Indexed: 11/13/2022] Open
Abstract
The NLRP3 inflammasome is overexpressed in gingiva of periodontitis patients but its role remains unclear. In our study, we use a periodontitis mouse model of ligature, impregnated or not with Porphyromonas gingivalis, in WT or NLRP3 KO mice. After 28 days of induction, ligature alone provoked exacerbated periodontal destruction in KO mice, compared to WT mice, with an increase in activated osteoclasts. No difference was observed at 14 days, suggesting that NLRP3 is involved in regulatory pathways that limit periodontitis. In contrast, in the presence of P. gingivalis, this protective effect of NLRP3 was not observed. Overexpression of NLRP3 in connective tissue of WT mice increased the local production of mature IL-1β, together with a dramatic mobilization of neutrophils, bipartitely distributed between the site of periodontitis induction and the alveolar bone crest. P. gingivalis enhanced the targeting of NLRP3-positive neutrophils to the alveolar bone crest, suggesting a role for this subpopulation in bone loss. Conversely, in NLRP3 KO mice, mature IL-1β expression was lower and almost no neutrophils were mobilized. Our study sheds new light on the role of NLRP3 in periodontitis by highlighting the ambiguous role of neutrophils, and P. gingivalis which affects NLRP3 functions.
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Affiliation(s)
- Banndith Cheat
- Université de Paris, Laboratory of Orofacial Pathologies, Imaging and Biotherapies URP2496, Montrouge, France.,Laboratoire d'Excellence INFLAMEX, Paris, France
| | - Coralie Torrens
- Université de Paris, Laboratory of Orofacial Pathologies, Imaging and Biotherapies URP2496, Montrouge, France.,Laboratoire d'Excellence INFLAMEX, Paris, France
| | - Asmaa Foda
- Université de Paris, Laboratory of Orofacial Pathologies, Imaging and Biotherapies URP2496, Montrouge, France.,Laboratoire d'Excellence INFLAMEX, Paris, France
| | - Brigitte Baroukh
- Université de Paris, Laboratory of Orofacial Pathologies, Imaging and Biotherapies URP2496, Montrouge, France.,Laboratoire d'Excellence INFLAMEX, Paris, France
| | - Jeremy Sadoine
- Université de Paris, Laboratory of Orofacial Pathologies, Imaging and Biotherapies URP2496, Montrouge, France.,Université de Paris, Plateforme Imageries du Vivant, Faculté de Chirurgie Dentaire, Montrouge, France
| | - Lotfi Slimani
- Université de Paris, Laboratory of Orofacial Pathologies, Imaging and Biotherapies URP2496, Montrouge, France.,Université de Paris, Plateforme Imageries du Vivant, Faculté de Chirurgie Dentaire, Montrouge, France
| | - Véronique Witko-Sarsat
- Laboratoire d'Excellence INFLAMEX, Paris, France.,Université de Paris, INSERM U1016, CNRS UMR 8104, Institut Cochin, Paris, France
| | - Olivier Huck
- Université de Strasbourg, Faculté de Chirurgie Dentaire, Periodontology, Strasbourg, France.,INSERM, UMR 1260, Regenerative Nanomedicine, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Marjolaine Gosset
- Université de Paris, Laboratory of Orofacial Pathologies, Imaging and Biotherapies URP2496, Montrouge, France.,Laboratoire d'Excellence INFLAMEX, Paris, France.,Service de Médecine Bucco-Dentaire, AP-HP, Hôpital Charles Foix, Ivry-sur-Seine, France
| | - Jérôme Bouchet
- Université de Paris, Laboratory of Orofacial Pathologies, Imaging and Biotherapies URP2496, Montrouge, France.,Laboratoire d'Excellence INFLAMEX, Paris, France
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Pharmacological Therapies for the Management of Inflammatory Bone Resorption in Periodontal Disease: A Review of Preclinical Studies. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5832009. [PMID: 35547360 PMCID: PMC9085331 DOI: 10.1155/2022/5832009] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/28/2022] [Accepted: 04/13/2022] [Indexed: 02/06/2023]
Abstract
Periodontitis, a highly prevalent multicausal chronic inflammatory and destructive disease, develops as a result of complex host-parasite interactions. Dysbiotic bacterial biofilm in contact with the gingival tissues initiates a cascade of inflammatory events, mediated and modulated by the host's immune response, which is characterized by increased expression of several inflammatory mediators such as cytokines and chemokines in the connective tissue. If periodontal disease (PD) is left untreated, it results in the destruction of the supporting tissues around the teeth, including periodontal ligament, cementum, and alveolar bone, which lead to a wide range of disabilities and poor quality of life, thus imposing significant burdens. This process depends on the differentiation and activity of osteoclasts, the cells responsible for reabsorbing the bone tissue. Therefore, the inhibition of differentiation or activity of these cells is a promising strategy for controlling bone resorption. Several pharmacological drugs that target osteoclasts and inflammatory cells with immunomodulatory and anti-inflammatory effects, such as bisphosphonates, anti-RANK-L antibody, strontium ranelate, cathepsin inhibitors, curcumin, flavonoids, specialized proresolving mediators, and probiotics, were already described to manage inflammatory bone resorption during experimental PD progression in preclinical studies. Meantime, a growing number of studies have described the beneficial effects of herbal products in inhibiting bone resorption in experimental PD. Therefore, this review summarizes the role of several pharmacological drugs used for PD prevention and treatment and highlights the targeted action of all those drugs with antiresorptive properties. In addition, our review provides a timely and critical appraisal for the scientific rationale use of the antiresorptive and immunomodulatory medications in preclinical studies, which will help to understand the basis for its clinical application.
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Bertolini NO, Pereira GJ, Silva VO, de Molon RS, Morari J, Velloso LA, Andrade EF, Pereira LJ, Moura RF. Voluntary physical activity mitigates alveolar bone loss in mice with ligature-induced experimental periodontitis. Arch Oral Biol 2022; 140:105451. [DOI: 10.1016/j.archoralbio.2022.105451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 04/13/2022] [Accepted: 05/06/2022] [Indexed: 11/27/2022]
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Yang R, Liu T, Pang C, Cai Y, Lin Z, Guo L, Wei X. The Regulatory Effect of Coaggregation Between Fusobacterium nucleatum and Streptococcus gordonii on the Synergistic Virulence to Human Gingival Epithelial Cells. Front Cell Infect Microbiol 2022; 12:879423. [PMID: 35573793 PMCID: PMC9100429 DOI: 10.3389/fcimb.2022.879423] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
In subgingival plaque biofilms, Fusobacterium nucleatum is closely related to the occurrence and development of periodontitis. Streptococcus gordonii, as an accessory pathogen, can coaggregate with periodontal pathogens, facilitating the subgingival colonization of periodontal pathogens. Studies have shown that F. nucleatum can coaggregate with S. gordonii and colonize the subgingival plaque. However, most studies have focused on monocultures or coinfection of species and the potential impact of coaggregation between the two species on periodontal interactions to human gingival epithelial cells (hGECs) remains poorly understood. The present study explored the effect of coaggregation between F. nucleatum and S. gordonii on subgingival synergistic virulence to hGECs. The results showed that coaggregation inhibited the adhesion and invasion of F. nucleatum to hGECs compared with that in the F. nucleatum monoculture and coinfection group. Coaggregation and coinfection with F. nucleatum both enhanced S. gordonii adhesion to hGECs, but neither of the two groups affected S. gordonii invasion to hGECs compared with S. gordonii monoculture. The gene expression levels of TLR2 and TLR4 in hGECs in the coaggregation group were higher than those in the monoculture groups but lower than those in the coinfection group. Compared with coinfection, the coaggregation inhibited apoptosis of hGECs and promoted the secretion of the proinflammatory cytokines TNF-α and IL-6 by hGECs, showed a synergistic inflammatory effect, while coaggregation inhibited the secretion of the anti-inflammatory cytokine TGF-β1. Coaggregation enhanced the phosphorylation of p65, p38, and JNK proteins and therefore activated the NF-κB and MAPK signaling pathways. Pretreatment with a pathway antagonist/inhibitor decreased the phosphorylation levels of proteins and the secretion of TNF-α and IL-6. In conclusion, coaggregation inhibited the adhesion and invasion of F. nucleatum to hGECs. However, it enhanced the adhesion of S. gordonii to hGECs. Compared with coinfection, coaggregation inhibited the apoptosis of hGECs. The coaggregation coordinately promoted the secretion of TNF-α and IL-6 by hGECs through the TLR/NF-κB and TLR/MAPK signaling pathways while inhibiting the secretion of TGF-β1, thus aggravating the inflammatory response of hGECs.
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Affiliation(s)
- Ruiqi Yang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Tingjun Liu
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Chunfeng Pang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Yanling Cai
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Zhengmei Lin
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Lihong Guo
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Xi Wei
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, China
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Jeon SJ, Lee Y, Keum BR, Choi EY, Choi IS, Kim SJ. Effect of telmisartan on experimental model of periodontitis in mice. Oral Dis 2022. [PMID: 35347812 DOI: 10.1111/odi.14200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/19/2022] [Accepted: 03/23/2022] [Indexed: 10/18/2022]
Affiliation(s)
- So Jung Jeon
- Department of Periodontology, School of Dentistry, Pusan National University, Yangsan, Gyeongsangnam-do, Korea
| | - Yohan Lee
- Department of Periodontology, School of Dentistry, Pusan National University, Yangsan, Gyeongsangnam-do, Korea
| | - Bo Ram Keum
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - Eun-Young Choi
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - In Soon Choi
- Department of Biological Science, College of Medical and Life Sciences, Silla University, Busan, Korea
| | - Sung-Jo Kim
- Department of Periodontology, School of Dentistry, Pusan National University, Yangsan, Gyeongsangnam-do, Korea.,Dental and Life Science Institute, Pusan National University, Yangsan, Gyeongsangnam-do, Korea.,Department of Dentistry, BHS Hanseo Hospital, Busan, Korea
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Wilharm A, Binz C, Sandrock I, Rampoldi F, Lienenklaus S, Blank E, Winkel A, Demera A, Hovav AH, Stiesch M, Prinz I. Interleukin-17 is disease promoting in early stages and protective in late stages of experimental periodontitis. PLoS One 2022; 17:e0265486. [PMID: 35298525 PMCID: PMC8929577 DOI: 10.1371/journal.pone.0265486] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 03/02/2022] [Indexed: 12/03/2022] Open
Abstract
Periodontitis is one of the most common infectious diseases in humans. It is characterized by a chronic inflammation of the tooth-supporting tissue that results in bone loss. However, the role and source of the pro-inflammatory cytokine interleukin-17 (IL-17) and of the cells producing it locally in the gingiva is still controversial. Th17 αβ T cells, CD4+ exFoxP3+ αβ T cells, or IL-17-producing γδ T cells (γδ17 cells) seem to be decisive cellular players in periodontal inflammation. To address these issues in an experimental model for periodontitis, we employed genetic mouse models deficient for either γδ T cells or IL-17 cytokines and assessed the bone loss during experimental periodontal inflammation by stereomicroscopic, histological, and μCT-analysis. Furthermore, we performed flow-cytometric analyses and qPCR-analyses of the gingival tissue. We found no γδ T cell- or IL-17-dependent change in bone loss after four weeks of periodontitis. Apart from that, our data are complementary with earlier studies, which suggested IL-17-dependent aggravation of bone loss in early periodontitis, but a rather bone-protective role for IL-17 in late stages of experimental periodontitis with respect to the osteoclastogenicity defined by the RANKL/OPG ratio.
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Affiliation(s)
- Anneke Wilharm
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Christoph Binz
- Institute of Immunology, Hannover Medical School, Hannover, Germany
- * E-mail:
| | - Inga Sandrock
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | | | - Stefan Lienenklaus
- Institute of Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - Eva Blank
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Hannover, Germany
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
| | - Andreas Winkel
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Hannover, Germany
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
| | - Abdi Demera
- Institute of Immunology, Hannover Medical School, Hannover, Germany
| | - Avi-Hai Hovav
- Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University, Jerusalem, Israel
| | - Meike Stiesch
- Department of Prosthetic Dentistry and Biomedical Materials Science, Hannover Medical School, Hannover, Germany
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
| | - Immo Prinz
- Institute of Immunology, Hannover Medical School, Hannover, Germany
- Institute of Systems Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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26
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de Almeida JM, Matheus HR, Sendão Alves BE, Rodrigues Gusman DJ, Nagata MJH, de Abreu Furquim EM, Ervolino E. Evaluation of antimicrobial photodynamic therapy with acidic methylene blue for the treatment of experimental periodontitis. PLoS One 2022; 17:e0263103. [PMID: 35143492 PMCID: PMC8830666 DOI: 10.1371/journal.pone.0263103] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 01/13/2022] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To investigate the security and effectiveness of antimicrobial photodynamic therapy (aPDT) with a citric acid-based methylene blue (MB) on the periodontal repair following the treatment of ligature-induced experimental periodontitis (EP) in rats. MATERIAL AND METHODS Were used 120 male rats, randomly divided into 4 experimental groups (n = 30): no treatment (NT), SRP alone (SRP), SRP plus aPDT using conventional MB pH 7.0 (aPDT-pH7), SRP plus aPDT using acidic MB pH 1.0 (aPDT-pH1). EP was induced at day 0 by the placement of a ligature around the mandibular left first molars. Ten animals per group/period were euthanized at 14, 22 and 37 days. Histopathological, histometric (percentage of bone in the furcation [PBF]) and immunohistochemical (for tartrate-resistant acid phosphatase [TRAP] and osteocalcin [OCN]) analyses were performed. Data were statistically analyzed. RESULTS aPDT-pH1 showed the highest PBF as compared with the other treatments. Collectively, tissues' reaction to both dyes were controlled and healthy for the periodontium. Both aPDT protocols reduced the extent and intensity of the local inflammatory response, reduced the alveolar bone resorption, and promoted a better structural arrangement of the connective tissue as compared with SRP. TRAP expression was downregulated while OCN expression was upregulated by aPDT as compared with SRP alone. CONCLUSION Our data implicate that the novel MB pH 1.0 is as safe as the conventional MB for use in aPDT and raises its additional benefit of increasing the amount of alveolar bone in the furcation.
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Affiliation(s)
- Juliano Milanezi de Almeida
- Periodontics Division, Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
- School of Dentistry, Nucleus of Study and Research in Periodontics and Implantology (NEPPI), São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - Henrique Rinaldi Matheus
- Periodontics Division, Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
- School of Dentistry, Nucleus of Study and Research in Periodontics and Implantology (NEPPI), São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - Breno Edson Sendão Alves
- Periodontics Division, Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
- School of Dentistry, Nucleus of Study and Research in Periodontics and Implantology (NEPPI), São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - David Jonathan Rodrigues Gusman
- Periodontics Division, Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
- School of Dentistry, Nucleus of Study and Research in Periodontics and Implantology (NEPPI), São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - Maria José Hitomi Nagata
- Periodontics Division, Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
- School of Dentistry, Nucleus of Study and Research in Periodontics and Implantology (NEPPI), São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - Elisa Mara de Abreu Furquim
- Periodontics Division, Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
- School of Dentistry, Nucleus of Study and Research in Periodontics and Implantology (NEPPI), São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - Edilson Ervolino
- School of Dentistry, Nucleus of Study and Research in Periodontics and Implantology (NEPPI), São Paulo State University (Unesp), Araçatuba, SP, Brazil
- Department of Basic Science, School of Dentistry, São Paulo State University (Unesp), Araçatuba, Brazil
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SALLUM GCB, SCARDUELI C, OLIVEIRA GJPLD, SPIN NETO R, MARCANTONIO RAC. Avaliação da perda óssea utilizando diferentes parâmetros na análise microtomográfica. Estudo em ratos. REVISTA DE ODONTOLOGIA DA UNESP 2022. [DOI: 10.1590/1807-2577.04522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Resumo Introdução o desafio no uso do Micro-Ct tem sido estabelecer e padronizar padrões adequados para escaneamento e tratamento das imagens, para que se obtenha o máximo desempenho do equipamento, e permitir a comparação dos achados entre diferentes estudos. Objetivo o presente estudo tem como objetivo comparar a porcentagem de volume ósseo em regiões com perda óssea periodontal utilizando diferentes metodologias para definição da área a ser analisada (ROI). Material e método dez ratos foram submetidos à indução de doença periodontal, e, após a eutanásia, as mandíbulas foram escaneadas com cortes de 9 μ e 18 μm de espessura, com passo de rotação de 0.3mm. As imagens foram reconstituídas utilizando o software NRecon, e em seguida, utilizando o software CTAnalyser – CTAn, foram definidas as áreas de interesse (ROI) ao redor dos segundos molares. A primeira área de interesse (ROI1) foi definida em um padrão retangular que se restringiu às regiões interproximais e furca, onde a área total de tecido ósseo foi obtida somando os resultados dos 3 ROIs. A segunda área (ROI2) foi definida no sentido corono/apical ao redor do segundo molar até suas limitações proximais com os dentes vizinhos, onde a porcentagem de tecido ósseo pertencente às raízes foram excluídas das avaliações. As análises foram realizadas com cinco diferentes valores de thresholds (130-50, 130-60, 130-70, 130-80, 130-90 e 130-100). Resultado a análise entre os diferentes ROIs demonstrou que em ambas as análises foi observada a tendência a menor porcentagem de tecido ósseo quanto maior o contraste de tons de cinza utilizado, no entanto, nos resultados obtidos no ROI2 essa diferença não foi estatisticamente significante. Conclusão com os resultados obtidos pode se concluir que a utilização de diferentes thresholds para quantificação óssea, em áreas onde houve doença periodontal, pode trazer resultados divergentes; a definição da área de interesse interfere com os resultados obtidos e que a obtenção de uma área de interesse com a remoção das raízes mostrou-se menos susceptível à variação dos parâmetros de escaneamento.
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Alshibani N. Resolvins as a Treatment Modality in Experimental Periodontitis: A Systematic Review of Preclinical Studies. Cureus 2022; 14:e21095. [PMID: 35036235 PMCID: PMC8754062 DOI: 10.7759/cureus.21095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/10/2022] [Indexed: 12/12/2022] Open
Abstract
This systematic review aimed to assess scientific data of existing literature to identify the efficacy of resolvins (Rv) in the treatment of periodontitis. The electronic databases, Web of Science (WOS), Medline/PubMed, The Cochrane Library, Scopus, and Saudi digital library (SDL), were searched for eligible studies in the field of periodontics. A thorough analysis of the retrieved literature provided five articles that were assessed and included in this systematic review. The quality of these studies was assessed by updated Essential Animal Research: Reporting of In-Vivo Experiments (ARRIVE) guidelines. The five included studies were published between 2005 and 2018 and investigated resolvins as a treatment approach in experimental periodontitis of animals. Among the study animals employed, New Zealand white rabbits were used in three studies, Wistar rats and Albino mice in two studies, respectively. Four studies have evaluated eicosapentaenoic acid-derived RvE1, and one study evaluated docosahexaenoic acid-derived RvD2. Oral-topical application of Rv was followed in four studies, and intra-peritoneal Rv injection was administered in one study. The study duration in these studies have ranged between 4-12 weeks, and the Rv dose was between 0.1 μg to 0.5 μg. One study evaluated the influence of RvE1 topical application on both the prevention and treatment of experimental periodontitis. Resolvins (RvE1 and RvD2) have been studied in periodontitis-induced animal models to assess their potential role in periodontal inflammation resolution. There are promising preclinical data of using resolvins as a treatment modality in experimental periodontitis. Resolvins have been demonstrated to inhibit the destructive inflammatory process and alveolar bone loss in laboratory-induced periodontitis under controlled experimental conditions.
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Affiliation(s)
- Nouf Alshibani
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, SAU
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Differential involvement of the canonical and noncanonical inflammasomes in the immune response against infection by the periodontal bacteria Porphyromonas gingivalis and Fusobacterium nucleatum. CURRENT RESEARCH IN MICROBIAL SCIENCES 2021; 2:100023. [PMID: 34841314 PMCID: PMC8610350 DOI: 10.1016/j.crmicr.2021.100023] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 01/30/2021] [Accepted: 02/16/2021] [Indexed: 12/30/2022] Open
Abstract
The canonical P2 × 7-Caspase-1 pathway is necessary for secretion of IL-1β in oral tissues and macrophages infected with P. gingivalis. P2 × 7 receptor controls bacterial load of F. nucleatum and P. gingivalis in macrophages and in mice. Caspase-11 is essential for F. nucleatum-induced secretion of IL-1β in macrophages, limits F. nucleatum infection in macrophages and in mice, and is required for cell death induced by F. nucleatum infection. The canonical inflammasome is activated preferentially in response to P. gingivalis infection, while the noncanonical inflammasome plays a predominant role during F. nucleatum infection.
We examined the involvement of the P2 × 7 receptor and the canonical and noncanonical inflammasomes in the control of single-species or dual-species infection by the periodontal bacteria Porphyromonas gingivalis and Fusobacterium nucleatum in cells and mice. Stimulation of the P2 × 7 receptor leads to activation of the canonical NLRP3 inflammasome and activation of caspase-1, which leads to cleavage of pro-IL-1β to IL-1β, a key cytokine in the host inflammatory response in periodontal disease. The non-canonical inflammasome pathway involves caspase-11. Thus, wildtype (WT), P2 × 7−/−, caspase-11−/− and caspase-1/11−/− mice were co-infected with both bacterial species. In parallel, bone marrow-derived macrophages (BMDMs) from WT mice and the different knockout mice were infected with P. gingivalis and/or F. nucleatum, and treated or not with extracellular ATP, which is recognized by P2 × 7. F. nucleatum infection alone promoted secretion of IL-1β in BMDMs. Conversely, the canonical pathway involving P2 × 7 and caspase-1 was necessary for secretion of IL-1β in BMDMs infected with P. gingivalis and in the mandible of mice coinfected with P. gingivalis and F. nucleatum. The P2 × 7 pathway can limit bacterial load in single-species and dual-species infection with P. gingivalis and F. nucleatum in BMDMs and in mice. The non-canonical pathway involving caspase-11 was required for secretion of IL-1β induced by F. nucleatum infection in BMDMs, without treatment with ATP. Caspase-11 was also required for induction of cell death during infection with F. nucleatum and contributed to limiting bacterial load during F. nucleatum infection in BMDMs and in the gingival tissue of mice coinfected with P. gingivalis and F. nucleatum. Together, these data suggest that the P2 × 7-caspase-1 and caspase-11 pathways are involved in the immune response against infection by P. gingivalis and F. nucleatum, respectively.
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30
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Mitruţ I, Cojocaru MO, Scorei IR, Biţă A, Mogoşanu GD, Popescu M, Olimid DA, Manolea HO. Preclinical and histological study of boron-containing compounds hydrogels on experimental model of periodontal disease. ROMANIAN JOURNAL OF MORPHOLOGY AND EMBRYOLOGY 2021; 62:219-226. [PMID: 34609424 PMCID: PMC8597384 DOI: 10.47162/rjme.62.1.21] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Periodontitis is a disease that affects a wide group of people, and there has been an increased interest in the research of finding useful materials that help reduce inflammation and the further loss of tissue. In this study, we have tested a boron-containing compound (BCC) Calcium Fructoborate (CaFB) and Boric Acid (BA) hydrogels on the gingival level on Wistar rats. First, we have induced the periodontal disease at the lower incisors, we have applied the hydrogels and after a week, we have euthanized the rats. Next, the oral soft tissue reaction was clinically and then histologically investigated. Our study has shown good clinical response of the oral tissue, and we have noticed lower levels of inflammation on the experimental groups treated with the BCCs hydrogels. Despite the generally good response of the biological structures to the presence of BA and CaFB on periodontal level, more scientifically proved information is needed to obtain the desired biological responses in all clinical situations.
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Affiliation(s)
- Ioana Mitruţ
- Department of Biochemistry, BioBoron Research Institute, S.C. Natural Research S.R.L., Podari, Dolj County, Romania;
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Lin P, Niimi H, Ohsugi Y, Tsuchiya Y, Shimohira T, Komatsu K, Liu A, Shiba T, Aoki A, Iwata T, Katagiri S. Application of Ligature-Induced Periodontitis in Mice to Explore the Molecular Mechanism of Periodontal Disease. Int J Mol Sci 2021; 22:ijms22168900. [PMID: 34445604 PMCID: PMC8396362 DOI: 10.3390/ijms22168900] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/07/2021] [Accepted: 08/10/2021] [Indexed: 02/06/2023] Open
Abstract
Periodontitis is an inflammatory disease characterized by the destruction of the periodontium. In the last decade, a new murine model of periodontitis has been widely used to simulate alveolar bone resorption and periodontal soft tissue destruction by ligation. Typically, 3-0 to 9-0 silks are selected for ligation around the molars in mice, and significant bone loss and inflammatory infiltration are observed within a week. The ligature-maintained period can vary according to specific aims. We reviewed the findings on the interaction of systemic diseases with periodontitis, periodontal tissue destruction, the immunological and bacteriological responses, and new treatments. In these studies, the activation of osteoclasts, upregulation of pro-inflammatory factors, and excessive immune response have been considered as major factors in periodontal disruption. Multiple genes identified in periodontal tissues partly reflect the complexity of the pathogenesis of periodontitis. The effects of novel treatment methods on periodontitis have also been evaluated in a ligature-induced periodontitis model in mice. This model cannot completely represent all aspects of periodontitis in humans but is considered an effective method for the exploration of its mechanisms. Through this review, we aimed to provide evidence and enlightenment for future studies planning to use this model.
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Affiliation(s)
- Peiya Lin
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Hiromi Niimi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
- Correspondence: (H.N.); (Y.O.); Tel.: +81-3-5803-5488 (H.N. & Y.O.)
| | - Yujin Ohsugi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
- Correspondence: (H.N.); (Y.O.); Tel.: +81-3-5803-5488 (H.N. & Y.O.)
| | - Yosuke Tsuchiya
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Tsuyoshi Shimohira
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Keiji Komatsu
- Department of Lifetime Oral Health Care Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan;
| | - Anhao Liu
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Takahiko Shiba
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Akira Aoki
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Takanori Iwata
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
| | - Sayaka Katagiri
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo 113-8549, Japan; (P.L.); (Y.T.); (T.S.); (A.L.); (T.S.); (A.A.); (T.I.); (S.K.)
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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] [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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Rojas C, García MP, Polanco AF, González-Osuna L, Sierra-Cristancho A, Melgar-Rodríguez S, Cafferata EA, Vernal R. Humanized Mouse Models for the Study of Periodontitis: An Opportunity to Elucidate Unresolved Aspects of Its Immunopathogenesis and Analyze New Immunotherapeutic Strategies. Front Immunol 2021; 12:663328. [PMID: 34220811 PMCID: PMC8248545 DOI: 10.3389/fimmu.2021.663328] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/10/2021] [Indexed: 12/17/2022] Open
Abstract
Periodontitis is an oral inflammatory disease in which the polymicrobial synergy and dysbiosis of the subgingival microbiota trigger a deregulated host immune response, that leads to the breakdown of tooth-supporting tissues and finally tooth loss. Periodontitis is characterized by the increased pathogenic activity of T helper type 17 (Th17) lymphocytes and defective immunoregulation mediated by phenotypically unstable T regulatory (Treg), lymphocytes, incapable of resolving the bone-resorbing inflammatory milieu. In this context, the complexity of the immune response orchestrated against the microbial challenge during periodontitis has made the study of its pathogenesis and therapy difficult and limited. Indeed, the ethical limitations that accompany human studies can lead to an insufficient etiopathogenic understanding of the disease and consequently, biased treatment decision-making. Alternatively, animal models allow us to manage these difficulties and give us the opportunity to partially emulate the etiopathogenesis of periodontitis by inoculating periodontopathogenic bacteria or by placing bacteria-accumulating ligatures around the teeth; however, these models still have limited translational application in humans. Accordingly, humanized animal models are able to emulate human-like complex networks of immune responses by engrafting human cells or tissues into specific strains of immunodeficient mice. Their characteristics enable a viable time window for the study of the establishment of a specific human immune response pattern in an in vivo setting and could be exploited for a wider study of the etiopathogenesis and/or treatment of periodontitis. For instance, the antigen-specific response of human dendritic cells against the periodontopathogen Porphyromonas gingivalis favoring the Th17/Treg response has already been tested in humanized mice models. Hypothetically, the proper emulation of periodontal dysbiosis in a humanized animal could give insights into the subtle molecular characteristics of a human-like local and systemic immune response during periodontitis and support the design of novel immunotherapeutic strategies. Therefore, the aims of this review are: To elucidate how the microbiota-elicited immunopathogenesis of periodontitis can be potentially emulated in humanized mouse models, to highlight their advantages and limitations in comparison with the already available experimental periodontitis non-humanized animal models, and to discuss the potential translational application of using these models for periodontitis immunotherapeutics.
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Affiliation(s)
- Carolina Rojas
- Periodontal Biology Laboratory, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Michelle P García
- Periodontal Biology Laboratory, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Alan F Polanco
- Periodontal Biology Laboratory, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Luis González-Osuna
- Periodontal Biology Laboratory, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Alfredo Sierra-Cristancho
- Periodontal Biology Laboratory, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Faculty of Dentistry, Universidad Andres Bello, Santiago, Chile
| | - Samanta Melgar-Rodríguez
- Periodontal Biology Laboratory, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - Emilio A Cafferata
- Periodontal Biology Laboratory, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Periodontology, School of Dentistry, Universidad Científica del Sur, Lima, Perú
| | - Rolando Vernal
- Periodontal Biology Laboratory, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
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de Almeida JM, Matheus HR, Fiorin LG, Furquim EMA, Gusman DJR. Influence of immunosuppression on the progression of experimental periodontitis and on healthy periodontal tissue: A rat in vivo study. J Dent Res Dent Clin Dent Prospects 2021; 15:94-99. [PMID: 34386179 PMCID: PMC8346707 DOI: 10.34172/joddd.2021.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/05/2020] [Indexed: 12/17/2022] Open
Abstract
Background. The potent anti-inflammatory and immunosuppressive properties of glucocorticoids (GCs) might influence the progression of some disorders, such as periodontitis. Hence, this study aimed to investigate the influence of dexamethasone (DEX) on the alveolar bone loss (ABL) of healthy and periodontally compromised molars in rats. Methods. Thirty male rats were randomly assigned to two groups: physiological saline solution (PSS) and DEX. The animals received subcutaneous injections of either 0.5 mL of PSS) (group PSS) or 2 mg/kg of DEX (group DEX) from one day before experimental periodontitis (EP) induction until euthanasia. EP was induced through ligature placement around the mandibular lower first molars at day 0. Contralateral molars remained unligated. Ten animals per period were euthanized on days 3, 7, and 14. Morphometric analysis was performed to access the ABL. Data were statistically analyzed with ANOVA followed by post hoc Tukey tests (P ≤ 0.05). Results. Higher ABL was observed in both groups on days 7 and 14 than on day 3 (P ≤ 0.05). Concerning periodontitis, higher ABL was observed in group DEX on days 3, 7, and 14 days than group PSS at the same time intervals (P ≤ 0.05). Also, even in the contralateral unligated molars, group DEX exhibited higher ABL on days 3, 7, and 14 days than group PSS at the same time intervals (P ≤ 0.05). Conclusions. Collectively, it can be concluded that DEX aggravates EP and induces spontaneous ABL in the healthy periodontium.
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Affiliation(s)
- Juliano Milanezi de Almeida
- Department of Diagnosis and Surgery, São Paulo State University (UNESP), School of Dentistry, Sao Paulo, Brazil
| | - Henrique Rinaldi Matheus
- Department of Diagnosis and Surgery, São Paulo State University (UNESP), School of Dentistry, Sao Paulo, Brazil
| | - Luiz Guilherme Fiorin
- Department of Diagnosis and Surgery, São Paulo State University (UNESP), School of Dentistry, Sao Paulo, Brazil
| | - Elisa Mara Abreu Furquim
- Department of Diagnosis and Surgery, São Paulo State University (UNESP), School of Dentistry, Sao Paulo, Brazil
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Mata K, Nobre AVV, Felix Silva PH, Oliezer RS, Fernandes C, Amaral J, Ramos J, Constante Gabriel Del-Arco M, Messora MR, Tanus-Santos JE, Gerlach RF, Salvador SL. A new mixed model of periodontitis-induced preeclampsia: A pilot study. J Periodontal Res 2021; 56:726-734. [PMID: 33686671 DOI: 10.1111/jre.12869] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 01/26/2021] [Accepted: 02/14/2021] [Indexed: 02/06/2023]
Abstract
OBJECTIVES/BACKGROUND Recent studies have shown that periodontal disease is strongly related to gestational complications such as preeclampsia (PE). PE is responsible for 42% of maternal deaths worldwide and kills approximately 76 000 women a year. In addition, children born under PE conditions are at increased risk of hospitalization due to metabolic disorders, epilepsy, and other complications. Numerous reviews and clinical studies on PE have been published, but the mechanisms underlying the relationship between periodontal disease and PE and the way periodontopathogens alter vascular response in pregnant women remain unclear. METHODS This study aims to verify whether periodontal disease induces PE by using the association of two periodontitis (PD) models: ligature and oral Porphyromonas gingivalis (P. gingivalis) W83 inoculation in Wistar rats. At gestational day 5, the ligature was placed on each mandibular first molar, which was followed by daily oral P. gingivalis inoculation for 15 days. At gestational day 19, urine was collected, and invasive arterial pressure was measured. The animals were euthanized, and plasma and tissues were collected. RESULTS After 15 days of the association of ligature and P. gingivalis inoculation, the animals presented the characteristic symptoms of PE: altered blood pressure, proteinuria, and change in litter size (number of pups) and pup weight when compared to the control group (p < .005). The PE animals also presented greater bone porosity, trabecular separation, and reduced bone volume in the hemimandibles, as well as altered inflammatory response. The level of cytokine IL-6 was higher in the PE group than in the control group (p < .005). CONCLUSION The association of two PD models effectively induced PE. To our knowledge, this is the first study on the oral use of P. gingivalis for PE induction. Our results support the importance of PD as a possible cause for PE development, opening an important new avenue to study cause and consequence relationships in inflammation and PE due to exposure to periodontal infection.
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Affiliation(s)
- Karina Mata
- Department of Basic and Oral Biology, Dental School of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil.,University of Rio Verde, UniRV, Formosa, GO, Brazil
| | - Atila Vinícius Vitor Nobre
- Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirao Preto Dental School, University of Sao Paulo-USP, Ribeirao Preto, SP, Brazil
| | - Pedro Henrique Felix Silva
- Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirao Preto Dental School, University of Sao Paulo-USP, Ribeirao Preto, SP, Brazil
| | - Rene Seabra Oliezer
- Department of Basic and Oral Biology, Dental School of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Cleverson Fernandes
- University of Rio Verde, UniRV, Formosa, GO, Brazil.,Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Jefferson Amaral
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Junia Ramos
- Department of Basic and Oral Biology, Dental School of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Marina Constante Gabriel Del-Arco
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirao Preto, University of Sao Paulo-USP, Ribeirao Preto, SP, Brazil
| | - Michel Reis Messora
- Department of Oral and Maxillofacial Surgery and Periodontology, Ribeirao Preto Dental School, University of Sao Paulo-USP, Ribeirao Preto, SP, Brazil
| | - José Eduardo Tanus-Santos
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Raquel Fernanda Gerlach
- Department of Basic and Oral Biology, Dental School of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Sergio Luiz Salvador
- Department of Clinical Analyses, Toxicology and Food Sciences, School of Pharmaceutical Sciences of Ribeirao Preto, University of Sao Paulo-USP, Ribeirao Preto, SP, Brazil
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Han Y, Huang W, Meng H, Zhan Y, Hou J. Pro-inflammatory cytokine interleukin-6-induced hepcidin, a key mediator of periodontitis-related anemia of inflammation. J Periodontal Res 2021; 56:690-701. [PMID: 33656216 DOI: 10.1111/jre.12865] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 01/05/2021] [Accepted: 02/06/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVES To investigate whether anemia of inflammation (AI) occurs in periodontitis patients and to further explore underlying pathogenesis of periodontitis-related AI by an experimental periodontitis model. BACKGROUND Previous studies have reported periodontitis patients could show a tendency toward AI. However, the relationship between periodontitis and AI remains unclear, and the related pathological mechanisms have not been identified. MATERIALS AND METHODS Periodontal clinical parameters, inflammatory markers, and anemia-related indicators were compared between 98 aggressive periodontitis (AgP) patients and 103 healthy subjects. An experimental periodontitis model was induced by ligature placement in mice. The changes in mice inflammatory markers, anemia indicators, hepcidin mRNA expression, and serum hepcidin concentrations were measured. Human and mouse liver cells were treated with interleukin-6 (IL-6) for analyzing the changes in hepcidin expression based on mRNA and protein levels. RESULTS AgP patients exhibited higher white blood cell counts, IL-6, and C-reactive protein. Adjusted linear regression analyses showed correlations between AgP and decreased hemoglobin (HGB) and hematocrit (HCT). The ligature-induced periodontitis caused systemic inflammation and elevated IL-6 levels. Lower red blood cell counts, HGB, and HCT were detected, whereas the levels of hepcidin mRNA expression and serum hepcidin concentrations increased. The treatment of hepatocytes with IL-6 induced both hepcidin mRNA expression and hepcidin secretion. CONCLUSIONS Systemic inflammation induced by periodontitis leads to an increased risk for AI. IL-6-induced hepcidin could play a central mediator role and act as a key pathologic mechanism. Our results demonstrate periodontitis may be considered as an additional inflammatory disease contributing to the development of AI.
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Affiliation(s)
- Ye Han
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Wenxue Huang
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Huanxin Meng
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Yalin Zhan
- First Clinical Division, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Jianxia Hou
- Department of Periodontology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing, China
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Ren B, Lu J, Li M, Zou X, Liu Y, Wang C, Wang L. Anti-inflammatory effect of IL-1ra-loaded dextran/PLGA microspheres on Porphyromonas gingivalis lipopolysaccharide-stimulated macrophages in vitro and in vivo in a rat model of periodontitis. Biomed Pharmacother 2021; 134:111171. [PMID: 33383312 DOI: 10.1016/j.biopha.2020.111171] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/11/2020] [Accepted: 12/14/2020] [Indexed: 02/08/2023] Open
Abstract
Periodontitis is a multifactorial chronic infectious disease leading to a host immune response involving inflammatory cytokines, especially IL-1β, which is the main reason for further developing this disease. IL-1 receptor antagonist (IL-1ra) binds IL-1 receptor, inhibiting IL-1β signaling and reducing the levels of other cytokines closely related to periodontitis, such as IL-6 and TNF-α. Therefore, the use of IL-1ra to inhibit periodontitis development in a system, ensuring its sustained release, might be an effective way to combat this disease. Hence, in this study, a novel IL-1ra-loaded dextran/PLGA microsphere was developed to allow the sustained release of IL-1ra and enhance the anti-inflammatory properties. Therefore, this study's purposes were to develop a novel periodontal treatment for inhibition and treatment of periodontitis and evaluate the sustained-release effect and anti-inflammatory properties of IL-1ra-loaded dextran/PLGA microspheres in vitro by cell experiments and in vivo by animal experiments. The results showed that IL-1ra-loaded dextran/PLGA microspheres were non-toxic both in vitro and in vivo and could be used as a safe and effective treatment. In addition, these microspheres could significantly prolong the half-life of IL-1ra drug, exerting a useful anti-inflammatory effect in macrophages stimulated with P. gingivalis lipopolysaccharide and in rats with periodontitis. In conclusion, IL-1ra-loaded dextran/PLGA microsphere might be a useful tool to combat periodontal disease.
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Affiliation(s)
- Baijie Ren
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China
| | - Jingyi Lu
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China
| | - Minghe Li
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China
| | - Xinying Zou
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China
| | - Yue Liu
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China
| | - Chang Wang
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China
| | - Lei Wang
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, 130021, People's Republic of China.
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Carvalho JDS, Ramadan D, de Paiva Gonçalves V, Maquera-Huacho PM, Assis RP, Lima TFO, Brunetti IL, Spolidorio DMP, Cesar T, Manthey JA, Spolidorio LC. Impact of citrus flavonoid supplementation on inflammation in lipopolysaccharide-induced periodontal disease in mice. Food Funct 2021; 12:5007-5017. [PMID: 33950049 DOI: 10.1039/d0fo03338c] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In general, the consumption of flavonoid-rich foods may influence the control/dysregulation of the magnitude and duration of inflammation and oxidative stress, which are known to contribute to multiple pathologies. Information regarding the impact of citrus flavonoid dietary supplementation on periodontal disease is still scarce. Herein, we investigated whether a diet supplemented with eriocitrin and eriodictyol could alter the course of the inflammatory response associated with LPS-induced periodontal disease in mice. Sixty BALB/c mice received a standard diet or a diet supplemented with different concentrations of eriocitrin or eriodictyol. After 30 days of food supplementation, a solution containing LPS from Escherichia coli was injected into the gingival tissues three times per week for four weeks. Neutrophils, mononuclear cells and eosinophils were assessed using a severity analysis system in H&E-stained sections and modified picrosirius red. The activities of myeloperoxidase (MPO), a marker of granulocyte infiltration, and eosinophil peroxidase (EPO) were determined spectrophotometrically. The oxidative damage was determined by measuring the malondialdehyde (MDA) content and anti-oxidative activity through the assessment of superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx). Interleukin (IL)-1β, TNF-α, and IL-10 were quantified by multiplex immunoassay. Periodontal inflammation was significantly inhibited by citrus flavonoid supplementation, including reduced flatness of the gingival epithelium and chronic and acute inflammatory cell infiltration, as well as loss of connective tissue in the gingival papillae. Both eriocitrin and eriodictyol inhibited gingival IL-1β and TNF-α and increased IL-10 secondary to periodontitis. Significant protection and decreased MPO and EPO activity were detected in the periodontal tissue of citrus flavonoid-treated animals. In comparison with the LPS group, SOD, CAT and GPx activities were increased, while the MDA content was reduced, indicating decreased oxidative damage. These results suggest that a diet supplemented with the citrus flavonoids eriocitrin or eriodictyol may aid in the prevention of periodontitis, representing a potential method to enhance local immunity and host defense.
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Affiliation(s)
- Jhonatan de Souza Carvalho
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil
| | - Dania Ramadan
- Department of Diagnosis and Surgery, School of Dentistry, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil
| | - Vinícius de Paiva Gonçalves
- Department of Physiology and Pathology, School of Dentistry, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil.
| | | | - Renata Pires Assis
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil
| | - Tayra Ferreira Oliveira Lima
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil
| | - Iguatemy Lourenço Brunetti
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil
| | | | - Thais Cesar
- Department of Food and Nutrition, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil
| | - John A Manthey
- U.S. Horticultural Research Laboratory, Agricultural Research Service, USDA, 2001 South Rock Road/Port Fierce, FL 34945, USA
| | - Luís Carlos Spolidorio
- Department of Physiology and Pathology, School of Dentistry, São Paulo State University (Unesp), Araraquara, São Paulo, Brazil.
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Firkova EI. In vivo animal models in periodontal research - focus on rodents. BULGARIAN JOURNAL OF VETERINARY MEDICINE 2021. [DOI: 10.15547/bjvm.2019-0056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Periodontal research has developed very fast in the last two decades. Although at this stage of science a lot of genetic and molecular-based trials are performed in order to elucidate the complex etiology, pathophysiology, biofilm-host interactions and responses on genetic and cellular level, in vivo animal models are still used. In many ways, in vivo experiments are superior to in vitro tests when the dynamics of the immune-inflammatory nature of the periodontal disease and peri-implantitis and the specific healing of soft and hard tissues is concerned. Screening the efficacy, mechanisms of action and application of different biomaterials requires in vivo experiments, be-fore the data translation to clinical settings. A number of small animals like rodents and large species like dogs and nonhuman primates are involved in periodontal research. As live creatures are used, the design of the studies must be well defined, with regard to the type of the animals, most suitable for the tested hypothesis, observation period, sample size, study power, critical size defects, and specific testing sites.
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Varotto BLR, Martinez RCR, Gouveia FV, Antunes GF, Fabri GMDC, Ballester G, Antequera R, de Siqueira SRDT, Fonoff ET, Teixeira MJ, de Siqueira JTT. Increased Anxiety-Like Behavior in the Acute Phase of a Preclinical Model of Periodontal Disease. Front Neurol 2020; 11:598851. [PMID: 33414759 PMCID: PMC7782965 DOI: 10.3389/fneur.2020.598851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 11/30/2020] [Indexed: 12/11/2022] Open
Abstract
Periodontal disease (PD) is an infectious-inflammatory oral disease that is highly prevalent among adolescence and adulthood and can lead to chronic orofacial pain and be associated with anxiety, stress and depression. This study aimed to identify anxiety-like behaviors in the ligature-induced murine preclinical model of PD in different phases of the disease (i.e., acute vs. chronic). Also, we investigated orofacial mechanical allodynia thresholds and superficial cortical plasticity along the orofacial motor cortex in both disease phases. To this aim, 25 male Wistar rats were randomly allocated in acute (14 days) or chronic (28 days) ligature-induced-PD groups and further divided into active-PD or sham-PD. Anxiety-like behavior was evaluated using the elevated plus maze, mechanical allodynia assessed using the von Frey filaments test and superficial motor cortex mapping was performed with electrical transdural stimulation. We observed increased anxiety-like behavior in active-PD animals in the acute phase, characterized by decreased number of entries into the open arm extremities [t (1,7) = 2.42, p = 0.04], and reduced time spent in the open arms [t (1,7) = 3.56, p = 0.01] and in the open arm extremities [t (1,7) = 2.75, p = 0.03]. There was also a reduction in the mechanical allodynia threshold in all active-PD animals [Acute: t (1,7) = 8.81, p < 0.001; Chronic: t (1,6) = 60.0, p < 0.001], that was positively correlated with anxiety-like behaviors in the acute group. No differences were observed in motor cortex mapping. Thus, our findings show the presence of anxiety-like behaviors in the acute phase of PD making this a suitable model to study the impact of anxiety in treatment response and treatment efficacy.
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Affiliation(s)
- Bruna Luiza Roim Varotto
- Dental Team, and Dental Research Group on Pain and Mental Health of Institute of Psychiatry, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Raquel Chacon Ruiz Martinez
- Division of Neuroscience, Hospital Sirio Libanês, São Paulo, Brazil
- School of Medicine, LIM/23 – Institute of Psychiatry, University of São Paulo, São Paulo, Brazil
| | - Flavia Venetucci Gouveia
- Division of Neuroscience, Hospital Sirio Libanês, São Paulo, Brazil
- Biological Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Geiza Fernanda Antunes
- Division of Neuroscience, Hospital Sirio Libanês, São Paulo, Brazil
- School of Medicine, LIM/23 – Institute of Psychiatry, University of São Paulo, São Paulo, Brazil
| | | | - Gerson Ballester
- School of Medicine, City of São Paulo University, São Paulo, Brazil
| | - Reynaldo Antequera
- Dental Team, and Dental Research Group on Pain and Mental Health of Institute of Psychiatry, School of Medicine, University of São Paulo, São Paulo, Brazil
| | | | - Erich Talamoni Fonoff
- Pain Center and Division of Functional Neurosurgery, Department of Neurology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Manoel Jacobsen Teixeira
- Pain Center and Division of Functional Neurosurgery, Department of Neurology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - José Tadeu Tesseroli de Siqueira
- Dental Team, and Dental Research Group on Pain and Mental Health of Institute of Psychiatry, School of Medicine, University of São Paulo, São Paulo, Brazil
- Pain Center and Division of Functional Neurosurgery, Department of Neurology, School of Medicine, University of São Paulo, São Paulo, Brazil
- Orofacial Pain Team, Dentistry Division, School of Medicine, Hospital das Clinicas, University of São Paulo, São Paulo, Brazil
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Borges JS, Paranhos LR, de Souza GL, de Souza Matos F, de Macedo Bernardino Í, Moura CCG, Soares PBF. Does systemic oral administration of curcumin effectively reduce alveolar bone loss associated with periodontal disease? A systematic review and meta-analysis of preclinical in vivo studies. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.104226] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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Wang X, Tong Y, Zhang J, Khan N, Zhang K, Bai H, Zhang Q, Chen Y. Neuroinflammation changes with periodontal inflammation status during periodontitis in wild-type mice. Oral Dis 2020; 27:1001-1011. [PMID: 32815656 DOI: 10.1111/odi.13618] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 08/09/2020] [Accepted: 08/12/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To investigate neuroinflammation under different periodontal status. MATERIALS AND METHODS Experimental periodontitis was induced by molar ligation (Lig group) or periodontal injection of lipopolysaccharide (LPS, Lps group). Periodontal status was assessed by alveolar bone resorption and periodontal inflammation. Micro-computed tomography and haematoxylin-eosin staining were performed to assess alveolar bone resorption and periodontal inflammation, respectively. Neuroinflammation was assessed by glial cell proliferation and proinflammatory factor expression. Microgliosis was determined by immunofluorescence. Astrogliosis was determined by immunohistochemistry. Expressions of tumour necrosis factor-alpha (TNF-α) and interleukin (IL)-1β were assessed by enzyme-linked immunosorbent assay. RESULTS Microgliosis and astrogliosis in the Lig group were notable with molar ligation for 2 weeks and 4 weeks (p < .05), but were only slightly different similar from the control group by week 12. Microgliosis and astrogliosis in the Lps group were significant with LPS injection for 4 and 8 weeks (p < .05). The groups displayed a positive correlation between the degree of periodontal inflammation and the number of glial cells (p < .05). Expressions of IL-1β and TNF-α in the Lps group were significantly increased with LPS injection for 8 weeks (p < .05). In the Lig group, only TNF-α was highly expressed with molar ligation for 12 weeks (p < .05). CONCLUSION Both models demonstrated that the inflammatory response in the hippocampus of mice can change during periodontitis depending on the periodontal inflammation status.
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Affiliation(s)
- Xu Wang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Xi'an Jiaotong University, Xi'an, China
| | - Yuxin Tong
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Xi'an Jiaotong University, Xi'an, China
| | - Jiayu Zhang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Xi'an Jiaotong University, Xi'an, China
| | - Nazia Khan
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Xi'an Jiaotong University, Xi'an, China
| | - Kaili Zhang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Xi'an Jiaotong University, Xi'an, China
| | - Huihui Bai
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Xi'an Jiaotong University, Xi'an, China
| | | | - Yue Chen
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an, China.,Xi'an Jiaotong University, Xi'an, China
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Brun A, Moignot N, Colombier ML, Dursun E. Emerging Nanotechnology in Non-Surgical Periodontal Therapy in Animal Models: A Systematic Review. NANOMATERIALS 2020; 10:nano10071414. [PMID: 32698391 PMCID: PMC7407288 DOI: 10.3390/nano10071414] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/21/2020] [Accepted: 07/16/2020] [Indexed: 12/24/2022]
Abstract
Periodontitis is one of the most prevalent inflammatory diseases. Its treatment, mostly mechanical and non-surgical, shows limitations. The aim of this systematic review was to investigate the effect of nanoparticles as a treatment alone in non-surgical periodontal therapy in animal models. A systematic search was conducted in Medline/PubMed, Web of Science, The Cochrane Library and Science Direct. The eligibility criteria were: studies (i) using nanoparticles as chemotherapeutic agent or as delivery system; (ii) including preclinical controlled animal model (experimental periodontitis); (iii) reporting alveolar bone loss; (iv) written in English; and (v) published up to June 2019. Risk of bias was evaluated according to the SYstematic Review Centre for Laboratory Animal Experimentation. On the 1324 eligible studies, 11 were included. All reported advantages in using nanoparticles for the treatment of periodontitis, highlighted by a reduction in bone loss. Agents modulating inflammation seem to be more relevant than antibiotics, in terms of efficiency and risk of antibiotic resistance. In addition, poly(lactic-co-glycolic acid) or drugs used as their own carrier appear to be the most interesting nanoparticles in terms of biocompatibility. Risk of bias assessment highlighted many criteria scored as unclear. There are encouraging preclinical data of using nanoparticles as a contribution to the treatment of periodontitis.
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Affiliation(s)
- Adrian Brun
- Faculty of Dental Surgery, Université de Paris, CEDEX F-92120 Montrouge, France; (A.B.); (N.M.); (M.-L.C.)
- Orofacial Pathologies, Imaging and Biotherapies laboratory, UR2496, Université de Paris, F-92120 Montrouge, France
- Division of Periodontology, Department of Oral Medicine, Henri Mondor Hospital, APHP, F-94000 Créteil, France
| | - Nicolas Moignot
- Faculty of Dental Surgery, Université de Paris, CEDEX F-92120 Montrouge, France; (A.B.); (N.M.); (M.-L.C.)
- Department of Oral Medicine, Bretonneau Hospital, APHP, F-75018 Paris, France
| | - Marie-Laure Colombier
- Faculty of Dental Surgery, Université de Paris, CEDEX F-92120 Montrouge, France; (A.B.); (N.M.); (M.-L.C.)
- Orofacial Pathologies, Imaging and Biotherapies laboratory, UR2496, Université de Paris, F-92120 Montrouge, France
- Division of Periodontology, Department of Oral Medicine, Louis Mourier Hospital, APHP, F-92700 Colombes, France
| | - Elisabeth Dursun
- Faculty of Dental Surgery, Université de Paris, CEDEX F-92120 Montrouge, France; (A.B.); (N.M.); (M.-L.C.)
- Innovative Dental Materials and Interfaces Research Unit (URB2i), EA4462, Université de Paris, Université Sorbonne Paris Nord, F-92120 Montrouge, France
- Division of Paediatric Dentistry, Department of Oral Medicine, Henri Mondor Hospital, APHP, F-94000 Créteil, France
- Correspondence:
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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: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [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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45
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Leira Y, Iglesias-Rey R, Gómez-Lado N, Aguiar P, Sobrino T, D'Aiuto F, Castillo J, Blanco J, Campos F. Periodontitis and vascular inflammatory biomarkers: an experimental in vivo study in rats. Odontology 2020; 108:202-212. [PMID: 31583485 PMCID: PMC7066291 DOI: 10.1007/s10266-019-00461-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 08/13/2019] [Indexed: 11/12/2022]
Abstract
The objective of this preclinical in vivo study was to determine changes in vascular inflammatory biomarkers in systemic circulation after injection of lipopolysaccharide (LPS) from Porphyromonas gingivalis (Pg) in rats. Experimental periodontitis was induced by injections of Pg-LPS. Gingival soft and hard tissues changes were analysed by means of magnetic resonance imaging and micro computed tomography. Serum levels of interleukin (IL)-6, IL-10, pentraxin (PTX) 3, and soluble fragment of tumor necrosis factor-like weak inducer of apoptosis (sTWEAK) were determined at baseline and 24 h, 7, 14, and 21 days after periodontal induction. Significant periodontal inflammation and alveolar bone loss were evident at the end of periodontal induction. Experimental periodontitis posed an acute systemic inflammatory response with increased serum levels of IL-6 and PTX3 at 24 h post-induction, followed by a significant overexpression of sTWEAK at 7 days. This inflammatory state was maintained until the end of the experiment (21 days). As expected, IL-10 serum levels were significantly lower during the follow-up compared to baseline concentrations. In the present animal model, experimental periodontitis is associated with increased systemic inflammation. Further studies are needed to confirm whether PTX3 and sTWEAK could be useful biomarkers to investigate potential mechanisms underlying the relationship between periodontitis and atherosclerotic vascular diseases.
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Affiliation(s)
- Yago Leira
- Periodontology Unit, Faculty of Medicine and Odontology, University of Santiago de Compostela, Medical-Surgical Dentistry (OMEQUI) Research Group, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain.
- Periodontology Unit, UCL Eastman Dental Institute and Hospital, University College London, 256 Gray's Inn Road, London, WC1X 8LD, UK.
| | - Ramón Iglesias-Rey
- Clinical Neurosciences Research Laboratory, Clinical University Hospital, Health Research Institute of Santiago de Compostela (IDIS), Travesa da Choupana s/n, 15706, Santiago de Compostela, Spain
| | - Noemí Gómez-Lado
- Molecular Imaging Group, Clinical University Hospital, Faculty of Medicine, University of Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Pablo Aguiar
- Molecular Imaging Group, Clinical University Hospital, Faculty of Medicine, University of Santiago de Compostela, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Tomás Sobrino
- Clinical Neurosciences Research Laboratory, Clinical University Hospital, Health Research Institute of Santiago de Compostela (IDIS), Travesa da Choupana s/n, 15706, Santiago de Compostela, Spain
| | - Francesco D'Aiuto
- Periodontology Unit, UCL Eastman Dental Institute and Hospital, University College London, 256 Gray's Inn Road, London, WC1X 8LD, UK
| | - José Castillo
- Clinical Neurosciences Research Laboratory, Clinical University Hospital, Health Research Institute of Santiago de Compostela (IDIS), Travesa da Choupana s/n, 15706, Santiago de Compostela, Spain
| | - Juan Blanco
- Periodontology Unit, Faculty of Medicine and Odontology, University of Santiago de Compostela, Medical-Surgical Dentistry (OMEQUI) Research Group, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Francisco Campos
- Clinical Neurosciences Research Laboratory, Clinical University Hospital, Health Research Institute of Santiago de Compostela (IDIS), Travesa da Choupana s/n, 15706, Santiago de Compostela, Spain.
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Gao L, Kang M, Zhang MJ, Reza Sailani M, Kuraji R, Martinez A, Ye C, Kamarajan P, Le C, Zhan L, Rangé H, Ho SP, Kapila YL. Polymicrobial periodontal disease triggers a wide radius of effect and unique virome. NPJ Biofilms Microbiomes 2020; 6:10. [PMID: 32157085 PMCID: PMC7064479 DOI: 10.1038/s41522-020-0120-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 02/14/2020] [Indexed: 02/07/2023] Open
Abstract
Periodontal disease is a microbially-mediated inflammatory disease of tooth-supporting tissues that leads to bone and tissue loss around teeth. Although bacterially-mediated mechanisms of alveolar bone destruction have been widely studied, the effects of a polymicrobial infection on the periodontal ligament and microbiome/virome have not been well explored. Therefore, the current investigation introduced a new mouse model of periodontal disease to examine the effects of a polymicrobial infection on periodontal ligament (PDL) properties, changes in bone loss, the host immune response, and the microbiome/virome using shotgun sequencing. Periodontal pathogens, namely Porphyromonas gingivalis, Treponema denticola, Tannerella forsythia, and Fusobacterium nucleatum were used as the polymicrobial oral inoculum in BALB/cByJ mice. The polymicrobial infection triggered significant alveolar bone loss, a heightened antibody response, an elevated cytokine immune response, a significant shift in viral diversity and virome composition, and a widening of the PDL space; the latter two findings have not been previously reported in periodontal disease models. Changes in the PDL space were present at sites far away from the site of insult, indicating that the polymicrobial radius of effect extends beyond the bone loss areas and site of initial infection and wider than previously appreciated. Associations were found between bone loss, specific viral and bacterial species, immune genes, and PDL space changes. These findings may have significant implications for the pathogenesis of periodontal disease and biomechanical properties of the periodontium. This new polymicrobial mouse model of periodontal disease in a common mouse strain is useful for evaluating the features of periodontal disease.
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Affiliation(s)
- Li Gao
- Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, San Francisco, CA, USA.,Department of Periodontology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Misun Kang
- Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California San Francisco, San Francisco, CA, USA
| | - Martin Jinye Zhang
- Oralome, Inc., QB3 labs, UCSF Mission Bay Campus, Byers Hall, San Francisco, CA, USA
| | - M Reza Sailani
- Oralome, Inc., QB3 labs, UCSF Mission Bay Campus, Byers Hall, San Francisco, CA, USA
| | - Ryutaro Kuraji
- Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, San Francisco, CA, USA.,Department of Life Science Dentistry, The Nippon Dental University, Tokyo, Japan.,Department of Periodontology, The Nippon Dental University School of Life Dentistry at Tokyo, Tokyo, Japan
| | - April Martinez
- Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, San Francisco, CA, USA
| | - Changchang Ye
- Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, San Francisco, CA, USA.,State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Pachiyappan Kamarajan
- Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, San Francisco, CA, USA
| | - Charles Le
- Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, San Francisco, CA, USA
| | - Ling Zhan
- Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, San Francisco, CA, USA
| | - Hélène Rangé
- Department of Periodontology, Université de Paris, Faculty of Odontology; APHP, Rothschild Hospital, Paris, France.,EA2496, Université de Paris, Faculty of Dental Surgery, Montrouge, France
| | - Sunita P Ho
- Department of Preventive and Restorative Dental Sciences, School of Dentistry, University of California San Francisco, San Francisco, CA, USA.,Department of Urology, School of Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Yvonne L Kapila
- Department of Orofacial Sciences, School of Dentistry, University of California San Francisco, San Francisco, CA, USA.
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47
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Severe magnesium deficiency compromises systemic bone mineral density and aggravates inflammatory bone resorption. J Nutr Biochem 2020; 77:108301. [DOI: 10.1016/j.jnutbio.2019.108301] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 11/10/2019] [Accepted: 11/16/2019] [Indexed: 12/28/2022]
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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] [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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Souza JACD, Magalhães FAC, Oliveira GJPLD, DE Molon RS, Zuanon JA, Souza PPCD. Pam2CSK4 (TLR2 agonist) induces periodontal destruction in mice. Braz Oral Res 2020; 34:e012. [PMID: 32049112 DOI: 10.1590/1807-3107bor-2020.vol34.0012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 12/10/2019] [Indexed: 01/21/2023] Open
Abstract
Lipoproteins are important bacterial immunostimulating molecules capable of inducing receptor activator of nuclear factor-κB (RANKL) and osteoclast formation in vitro and in vivo . Although these molecules are present in periodontopathogenic bacteria, their role in periodontitis is not known. In this study, we used Pam2CSK4 (PAM2), a synthetic molecule that mimics bacterial lipoprotein, to investigate the effects of lipoproteins on periodontitis in mice. C57BL/6 male mice were randomly divided into three experimental groups: 1) Negative control group: animals received vehicle injection; 2) Positive control group: animals received injection of Escherichia coli lipopolysaccharide (LPS); 3) PAM2 group: animals received PAM2 injection. All the injections were performed bilaterally every other day into the palatal mucosa between first and second molars. After twenty-four days, the animals were euthanized to assess alveolar bone volume (micro-CT), cellular and extracellular composition in the gingiva (stereometric analysis), and osteoclast numbers (TRAP staining). Treatment with either PAM2 or LPS induced gingival inflammation, as demonstrated by increased infiltration of inflammatory cells and enhanced angiogenesis, associated with a smaller number of fibroblasts and decreased extracellular matrix. Importantly, treatment not only with LPS but also with PAM2 resulted in a larger number of TRAP+ multinucleated osteoclasts and significant loss of alveolar bone. Collectively, our data demonstrate that PAM2 can induce gingival inflammation and bone loss in mice, broadening the avenues of investigation into the role of lipoproteins in the pathogenesis of periodontal disease.
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Affiliation(s)
| | | | | | - Rafael Scaf DE Molon
- Universidade Estadual Paulista - Unesp, School of Dentistry, Department of Diagnosis and Surgery, Araraquara, SP, Brazil
| | - José Antonio Zuanon
- Universidade Estadual Paulista - Unesp, School of Dentistry, Department of Physiology and Pathology, Araraquara, SP, Brazil
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Prietto NR, Martins TM, Santinoni CDS, Pola NM, Ervolino E, Bielemann AM, Leite FRM. Treatment of experimental periodontitis with chlorhexidine as adjuvant to scaling and root planing. Arch Oral Biol 2020; 110:104600. [DOI: 10.1016/j.archoralbio.2019.104600] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 10/03/2019] [Accepted: 11/03/2019] [Indexed: 11/17/2022]
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