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Nakagawa K, Watanabe K, Mizutani K, Takeda K, Takemura S, Sakaniwa E, Mikami R, Kido D, Saito N, Kominato H, Hattori A, Iwata T. Genetic analysis of impaired healing responses after periodontal therapy in type 2 diabetes: Clinical and in vivo studies. J Periodontal Res 2024; 59:712-727. [PMID: 38501307 DOI: 10.1111/jre.13249] [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: 11/27/2023] [Revised: 12/28/2023] [Accepted: 02/13/2024] [Indexed: 03/20/2024]
Abstract
OBJECTIVE This study aims to investigate the mechanisms underlying the impaired healing response by diabetes after periodontal therapy. BACKGROUND Outcomes of periodontal therapy in patients with diabetes are impaired compared with those in patients without diabetes. However, the mechanisms underlying impaired healing response to periodontal therapy have not been sufficiently investigated. MATERIALS AND METHODS Zucker diabetic fatty (ZDF) and lean (ZL) rats underwent experimental periodontitis by ligating the mandibular molars for one week. The gingiva at the ligated sites was harvested one day after ligature removal, and gene expression was comprehensively analyzed using RNA-Seq. In patients with and without type 2 diabetes (T2D), the corresponding gene expression was quantified in the gingiva of the shallow sulcus and residual periodontal pocket after non-surgical periodontal therapy. RESULTS Ligation-induced bone resorption and its recovery after ligature removal were significantly impaired in the ZDF group than in the ZL group. The RNA-Seq analysis revealed 252 differentially expressed genes. Pathway analysis demonstrated the enrichment of downregulated genes involved in the peroxisome proliferator-activated receptor (PPAR) signaling pathway. PPARα and PPARγ were decreased in mRNA level and immunohistochemistry in the ZDF group than in the ZL group. In clinical, probing depth reduction was significantly less in the T2D group than control. Significantly downregulated expression of PPARα and PPARγ were detected in the residual periodontal pocket of the T2D group compared with those of the control group, but not in the shallow sulcus between the groups. CONCLUSIONS Downregulated PPAR subtypes expression may involve the impaired healing of periodontal tissues by diabetes.
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Affiliation(s)
- Keita Nakagawa
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kazuki Watanabe
- Department of Biology, College of Liberal Arts and Sciences, Tokyo Medical and Dental University, Chiba, Japan
| | - Koji Mizutani
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kohei Takeda
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shu Takemura
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Eri Sakaniwa
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Risako Mikami
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Daisuke Kido
- Department of General Dentistry, Tokyo Medical and Dental University Dental Hospital, Tokyo, Japan
| | - Natsumi Saito
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hiromi Kominato
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Atsuhiko Hattori
- Department of Sport and Wellness, College of Sport and Wellness, Rikkyo University, Saitama, Japan
| | - Takanori Iwata
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Lee MJ, Ryu HH, Hwang JW, Kim JR, Cho ES, Choi JK, Moon YJ. Sirt6 Activation Ameliorates Inflammatory Bone Loss in Ligature-Induced Periodontitis in Mice. Int J Mol Sci 2023; 24:10714. [PMID: 37445896 PMCID: PMC10341680 DOI: 10.3390/ijms241310714] [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: 05/30/2023] [Revised: 06/21/2023] [Accepted: 06/25/2023] [Indexed: 07/15/2023] Open
Abstract
Periodontitis is an inflammatory disease caused by microorganisms that induce the destruction of periodontal tissue. Inflamed and damaged tissue produces various inflammatory cytokines, which activate osteoclasts and induce alveolar bone loss and, eventually, tooth loss. Sirt6 expression suppresses inflammation and bone resorption; however, its role in periodontitis remains unclear. We hypothesized that Sirt6 has a protective role in periodontitis. To understand the role of Sirt6 in periodontitis, we compared periodontitis with ligature placement around the maxillary left second molar in 8-week-old control (C57BL/6J) male mice to Sirt6-overexpressing Tg (Sirt6Tg) mice, and we observed the resulting phenotypes using micro-CT. MDL801, a Sirt6 activator, was used as a therapy for periodontitis through oral gavage. Pro-inflammatory cytokines and increased osteoclast numbers were observed in alveolar bone tissue under periodontitis surgery. In the same condition, interestingly, protein levels from Sirt6 were the most downregulated among sirtuins in alveolar bone tissue. Based on micro-CT and CEJ-ABC distance, Sirt6Tg was observed to resist bone loss against ligature-induced periodontitis. Furthermore, the number of osteoclasts was significantly reduced in Sirt6Tg-ligated mice compared with control-ligated mice, although systemic inflammatory cytokines did not change. Consistent with this observation, we confirmed that bone loss was significantly reduced when MDL801, a Sirt6 activator, was included in the ligation mouse model. Our findings demonstrate that Sirt6 activation prevents bone loss against ligature-induced periodontitis. Thus, a Sirt6 activator may provide a new therapeutic approach for periodontitis.
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Affiliation(s)
- Myung Jin Lee
- Department of Chemistry, Case Western Reserve University, Cleveland, OH 44106, USA;
| | - Hyang Hwa Ryu
- Department of Biochemistry and Molecular Biology, Jeonbuk National University Medical School, Jeonju 54896, Republic of Korea; (H.H.R.); (J.W.H.)
| | - Jae Won Hwang
- Department of Biochemistry and Molecular Biology, Jeonbuk National University Medical School, Jeonju 54896, Republic of Korea; (H.H.R.); (J.W.H.)
| | - Jung Ryul Kim
- Department of Orthopaedic Surgery, Jeonbuk National University Medical School and Hospital, Jeonju 54896, Republic of Korea;
| | - Eui-Sic Cho
- Cluster for Craniofacial Development and Regeneration Research, Institute of Oral Biosciences, Jeonbuk National University School of Dentistry, Jeonju 54896, Republic of Korea;
| | - Jin Kyeong Choi
- Department of Immunology, Jeonbuk National University Medical School, Jeonju 54907, Republic of Korea
| | - Young Jae Moon
- Department of Biochemistry and Molecular Biology, Jeonbuk National University Medical School, Jeonju 54896, Republic of Korea; (H.H.R.); (J.W.H.)
- Department of Orthopaedic Surgery, Jeonbuk National University Medical School and Hospital, Jeonju 54896, Republic of Korea;
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Fan T, Guo K, Cao F, Deng Z, Liu B, Shi M, Liu Y, Ma Z. Study on the effect of periodontitis on renal tissue in atherosclerotic mice. J Periodontal Res 2023; 58:655-667. [PMID: 37051685 DOI: 10.1111/jre.13128] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 03/19/2023] [Accepted: 03/30/2023] [Indexed: 04/14/2023]
Abstract
BACKGROUND AND OBJECTIVE Periodontitis is immune inflammatory disease, atherosclerosis (AS) and chronic kidney disease (CKD) are two common systemic diseases. Periodontitis promotes AS and CKD, and CKD interacts with AS. The objective of this animal study was to evaluate the changes of kidney when periodontitis and atherosclerosis exist separately and the degenerative effects of periodontitis on the kidney in atherosclerotic mice. MATERIALS AND METHODS A total of 40 male Apoe-/- mice were randomly divided into four groups: control (NC), periodontitis (PD), AS and AS with PD (AS + PD). AS was induced by high-fat diet feeding, and PD was induced by injection of Porphyromonas gingivalis-Lipopolysaccharide (P.g-LPS) (endotoxin suspension) into the buccal side of mouse maxillary molars. The right maxilla of mice was scanned with micro-CT to evaluate alveolar bone loss; aortic tissue was stained with HE and Oil-Red O to evaluate arterial plaque formation; serum was collected to detect the changes of blood lipids and serum renal function parameters (blood urea nitrogen [BUN], serum creatinine [Scr]); renal histopathological changes were evaluated by HE staining (glomerular and tubular damage scores), PAS staining (glomerular Mesangial matrix index) and Masson staining (percentage of renal fibrosis area); qRT-PCR and ELISA were used to evaluate the expression of renal inflammatory cytokines (tumor necrosis factor-α, Interleukin-1β, neutrophil surface marker Ly6G). RESULTS The amount of alveolar bone loss: PD group was significantly higher than NC group (p < .05); AS + PD group was higher than PD group, the difference was not statistically significant. Atherosclerotic plaque formation and serum lipid changes: AS group were significantly worse than NC group (p < .05), and AS + PD group were worse than AS group. The results of the corresponding qualitative and quantitative analyses of kidney tissue in experimental animals gradually deteriorated in the NC group, PD group, AS group and AS + PD group and worsened sequentially. Renal function parameters: the content of BUN in AS group was higher than that in PD group, the difference was not statistically significant; Scr in AS group was significantly higher than that in PD group (p < .05); the contents of BUN and Scr in AS + PD group were higher than those in AS group, the difference was not statistically significant. Glomerular and tubular damage scores: AS group were higher than PD group, the difference was not statistically significant; AS + PD group were significantly higher than AS group (p < .001). The ratio of glomerular mesangial matrix to glomerular area and the percentage of renal fibrosis area: AS group were significantly higher than PD group (p < .001), and AS + PD group were significantly higher than AS group (p < .001). Expression of inflammatory cytokines: AS group was higher than PD group, the difference was not statistically significant; AS + PD group was significantly higher than AS group (p < .05). CONCLUSION Both PD and AS can aggravate the inflammatory stress of kidney tissue and cause the damage of kidney tissue, and the inflammatory increase and damage effect of AS is stronger; PD can promote kidney damage of atherosclerotic mice by aggravating the renal inflammation in atherosclerotic mice; renal function parameters were not completely synchronized with the changes of renal inflammation and histopathology in each group of mice; PD can promote AS, periodontal inflammation in mice with AS is more severe, and the special changes of blood lipids in mice with AS are closely related to the above results.
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Affiliation(s)
- Tiantian Fan
- Department of Preventive Dentistry, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, China
| | - Kaili Guo
- Department of Preventive Dentistry, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, China
| | - Fengdi Cao
- Department of Preventive Dentistry, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, China
| | - Zhuohang Deng
- Department of Preventive Dentistry, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, China
| | - Bin Liu
- Department of Preventive Dentistry, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, China
| | - Mingyue Shi
- Department of Preventive Dentistry, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, China
| | - Yue Liu
- Department of Preventive Dentistry, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, China
| | - Zhe Ma
- Department of Preventive Dentistry, Hebei Key Laboratory of Stomatology, Hebei Clinical Research Center for Oral Diseases, School and Hospital of Stomatology, Hebei Medical University, Shijiazhuang, China
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Ding X, Hou Y, Liu X, Li X, Liu X, Deng Y, Cao N, Yu W. The role of Sirt3-induced autophagy in renal structural damage caused by periodontitis in rats. J Periodontal Res 2023; 58:97-108. [PMID: 36380567 DOI: 10.1111/jre.13071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 10/14/2022] [Accepted: 10/26/2022] [Indexed: 11/18/2022]
Abstract
OBJECTIVE This research aimed to explore the effect of periodontitis on renal tissues injury in rats and the role of Sirtuin3 (Sirt3) and its regulation of autophagy in this progression. MATERIAL AND METHODS Thirty Wistar rats were assigned into three groups: control, periodontitis (P), and periodontitis with gavage administration of Sirt3 activator resveratrol (P + RSV). To induce periodontitis, the wire ligature was placed around the cervical region of the rat maxillary first molar. After 8 weeks, micro-computed tomography (Micro-CT) and hematoxylin and eosin (HE) were used to evaluate the alveolar bone resorption and periodontal inflammation. Serum and urine biochemical indicators were measured to assess renal function. The pathological changes of the kidney were observed via HE and periodic acid Schiff (PAS) staining. Autophagosome was viewed by transmission electron microscopy (TEM). Real-time PCR and western blot were used to test expressions of Sirt3 and autophagy indicators in renal and periodontal tissues, including mammalian target of rapamycin (mTOR), phosphor-mTOR (p-mTOR), BECN1 (Beclin-1), and microtubule-associated protein 1 light chain 3 (LC3). RESULTS Alveolar bone destruction, resorption, and periodontal inflammation were observed in the P group (compared with the control group), and the above indexes were significantly improved after RSV intervention; the obvious changes in renal tissue structure in the P group were partially recovered after RSV intervention, while renal functional status was not affected (among the three groups); in addition, the levels of Sirt3 and autophagy in kidney and periodontal tissues of P group were inhibited, manifested as a decrease in the number of autophagosomes (renal tissue) and expressions of autophagy marker Beclin-1 and LC3 conversion rate and an increase in the expression of p-mTOR. After Sirt3 activation (RSV), the above indicators were significantly improved. CONCLUSION Periodontitis causes renal structural damage in rats, which may be connected to the effect of Sirt3-induced autophagy.
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Affiliation(s)
- Xu Ding
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, China
| | - Yubo Hou
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, China
| | - Xinchan Liu
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Changchun, China
| | - Xin Li
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, China
| | - Xiaomeng Liu
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, China
| | - Yu Deng
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, China
| | - Niuben Cao
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, China
| | - Weixian Yu
- Department of Periodontology, Hospital of Stomatology, Jilin University, Changchun, China.,Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, China
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Li X, Liu X, Ding X, Liu X, Cao N, Deng Y, Hou Y, Yu W. Resveratrol protects renal damages induced by periodontitis via preventing mitochondrial dysfunction in rats. Oral Dis 2022; 29:1812-1825. [PMID: 35146845 DOI: 10.1111/odi.14148] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 01/18/2022] [Accepted: 01/31/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Periodontitis is closely associated with kidney disease and reactive oxygen species (ROS) involvement. Mitochondria are the primary source of both endogenous ROS and renal energy. We investigated whether resveratrol (RSV) prevents renal injury and mitochondrial dysfunction in periodontitis rats. METHODS Thirty male Wistar rats were divided into control, experimental periodontitis (Ep), and Ep-RSV groups. To induce periodontitis, a steel ligature was placed on the cervix of the bilateral first maxillary molars. RSV (50 mg/kg/d) to the Ep-RSV group and vehicle to the Ep and control groups were gavaged. After 8 weeks, alveolar bone loss, pocket depth, gingival blood index, and tooth mobility were assessed. Oxidative stress parameters, mitochondrial structure, mitochondrial membrane potential (MMP), mitochondrial ROS, adenosine triphosphate (ATP), sirtuin 1 (SIRT1), and peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α) were analysed in renal. Renal function and histology were also evaluated. RESULTS Compared with the control group, the Ep group showed renal structural destruction, elevated oxidative stress levels, mitochondrial structure destruction, MMP loss, mitochondrial ROS accumulation, ATP reduction, and decreased SIRT1 and PGC-1α levels. RSV prevented these destruction (p < .05). However, there was no significant impairment in renal function (p > .05). CONCLUSIONS Periodontitis induced mitochondrial dysfunction in renal tissues. Resveratrol exerts a preventive effect on periodontitis-induced kidney injury by preventing mitochondrial dysfunction.
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Affiliation(s)
- X Li
- Department of Periodontology, Hospital of Stomatology, Jilin University, Jilin University Stomatology Hospital, 1500 Qinghua Road, Chaoyang District, Changchun City, Jilin Province, China, Changchun, 130021, China
| | - X Liu
- Department of Oral Implantology, Hospital of Stomatology, Jilin University, Jilin University Stomatology Hospital, 1500 Qinghua Road, Chaoyang District, Changchun City, Jilin Province, China, Changchun, 130021, China
| | - X Ding
- Department of Periodontology, Hospital of Stomatology, Jilin University, Jilin University Stomatology Hospital, 1500 Qinghua Road, Chaoyang District, Changchun City, Jilin Province, China, Changchun, 130021, China
| | - X Liu
- Department of Periodontology, Hospital of Stomatology, Jilin University, Jilin University Stomatology Hospital, 1500 Qinghua Road, Chaoyang District, Changchun City, Jilin Province, China, Changchun, 130021, China
| | - N Cao
- Department of Periodontology, Hospital of Stomatology, Jilin University, Jilin University Stomatology Hospital, 1500 Qinghua Road, Chaoyang District, Changchun City, Jilin Province, China, Changchun, 130021, China
| | - Y Deng
- Department of Periodontology, Hospital of Stomatology, Jilin University, Jilin University Stomatology Hospital, 1500 Qinghua Road, Chaoyang District, Changchun City, Jilin Province, China, Changchun, 130021, China
| | - Y Hou
- Department of Periodontology, Hospital of Stomatology, Jilin University, Jilin University Stomatology Hospital, 1500 Qinghua Road, Chaoyang District, Changchun City, Jilin Province, China, Changchun, 130021, China
| | - W Yu
- Department of Periodontology, Hospital of Stomatology, Jilin University, Jilin University Stomatology Hospital, 1500 Qinghua Road, Chaoyang District, Changchun City, Jilin Province, China, Changchun, 130021, China.,Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Jilin University Stomatology Hospital, 1500 Qinghua Road, Chaoyang District, Changchun City, Jilin Province, China, Changchun, 130021, China
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