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Mosaddad SA, Talebi S, Keyhan SO, Fallahi HR, Darvishi M, Aghili SS, Tavahodi N, Namanloo RA, Heboyan A, Fathi A. Dental implant considerations in patients with systemic diseases: An updated comprehensive review. J Oral Rehabil 2024; 51:1250-1302. [PMID: 38570927 DOI: 10.1111/joor.13683] [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: 03/30/2023] [Revised: 10/27/2023] [Accepted: 03/02/2024] [Indexed: 04/05/2024]
Abstract
BACKGROUND Various medical conditions and the drugs used to treat them have been shown to impede or complicate dental implant surgery. It is crucial to carefully monitor the medical status and potential post-operative complications of patients with systemic diseases, particularly elderly patients, to minimize the risk of health complications that may arise. AIM The purpose of this study was to review the existing evidence on the viability of dental implants in patients with systemic diseases and to provide practical recommendations to achieve the best possible results in the corresponding patient population. METHODS The information for our study was compiled using data from PubMed, Scopus, Web of Science and Google Scholar databases and searched separately for each systemic disease included in our work until October 2023. An additional manual search was also performed to increase the search sensitivity. Only English-language publications were included and assessed according to titles, abstracts and full texts. RESULTS In total, 6784 studies were found. After checking for duplicates and full-text availability, screening for the inclusion criteria and manually searching reference lists, 570 articles remained to be considered in this study. CONCLUSION In treating patients with systemic conditions, the cost-benefit analysis should consider the patient's quality of life and expected lifespan. The success of dental implants depends heavily on ensuring appropriate maintenance therapy, ideal oral hygiene standards, no smoking and avoiding other risk factors. Indications and contraindications for dental implants in cases of systemic diseases are yet to be more understood; broader and hardcore research needs to be done for a guideline foundation.
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Affiliation(s)
- Seyed Ali Mosaddad
- Department of Research Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
- Department of Conservative Dentistry and Bucofacial Prosthesis, Faculty of Odontology, Complutense University of Madrid, Madrid, Spain
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
- Maxillofacial Surgery & Implantology & Biomaterial Research Foundation, Tehran, Iran
| | - Sahar Talebi
- Research Committee, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Seied Omid Keyhan
- Maxillofacial Surgery & Implantology & Biomaterial Research Foundation, Tehran, Iran
- Department of Oral & Maxillofacial Surgery, Gangneung-Wonju National University, Gangneung, South Korea
- Department of Oral & Maxillofacial Surgery, College of Medicine, University of Florida, Jacksonville, FL, USA
- Iface Academy, Istanbul, Turkey
| | - Hamid Reza Fallahi
- Maxillofacial Surgery & Implantology & Biomaterial Research Foundation, Tehran, Iran
- Department of Oral & Maxillofacial Surgery, Gangneung-Wonju National University, Gangneung, South Korea
- Department of Oral & Maxillofacial Surgery, College of Medicine, University of Florida, Jacksonville, FL, USA
- Iface Academy, Istanbul, Turkey
| | - Mohammad Darvishi
- Faculty of Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Seyedeh Sara Aghili
- Student Research Committee, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Narges Tavahodi
- Student Research Committee, Faculty of Dentistry, Mazandaran University of Medical Sciences, Sari, Iran
| | | | - Artak Heboyan
- Department of Research Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
- Department of Prosthodontics, Faculty of Stomatology, Yerevan State Medical University after Mkhitar Heratsi, Yerevan, Armenia
- Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Amirhossein Fathi
- Department of Prosthodontics, Dental Materials Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
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Yamashita S, Kondo Y, Watanabe C, Nodai T, Munemasa T, Mukaibo T, Masaki C, Shibata Y, Hosokawa R. Chronic kidney disease compromises structural and mechanical properties of maxillary cortical bone in a rat model. J Prosthodont Res 2024; 68:264-272. [PMID: 37211410 DOI: 10.2186/jpr.jpr_d_23_00016] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
PURPOSE This study aimed to investigate the effects of chronic kidney disease (CKD) on the structural and mechanical properties of the maxillary and mandibular cortical bone. METHODS The maxillary and mandibular cortical bones from CKD model rats were used in this study. CKD-induced histological, structural, and micro-mechanical alterations were assessed using histological analyses, micro-computed tomography (CT), bone mineral density (BMD) measurements, and nanoindentation tests. RESULTS Histological analyses indicated that CKD caused an increase in the number of osteoclasts and a decrease in the number of osteocytes in the maxilla. Micro-CT analysis revealed that CKD induced a void volume/cortical volume (%) increase, which was more remarkable in the maxilla than in the mandible. CKD also significantly decreased the BMD in the maxilla. In the nanoindentation stress-strain curve, the elastic-plastic transition point and loss modulus were lower in the CKD group than that in the control group in the maxilla, suggesting that CKD increased micro fragility of the maxillary bone. CONCLUSIONS CKD affected bone turnover in the maxillary cortical bone. Furthermore, the maxillary histological and structural properties were compromised, and micro-mechanical properties, including the elastic-plastic transition point and loss modulus, were altered by CKD.
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Affiliation(s)
- Sotaro Yamashita
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan
| | - Yusuke Kondo
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan
| | - Chie Watanabe
- Department of Biomaterials and Engineering, Showa University School of Dentistry, Tokyo, Japan
| | - Tomotaka Nodai
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan
| | - Takashi Munemasa
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan
| | - Taro Mukaibo
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan
| | - Chihiro Masaki
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan
| | - Yo Shibata
- Department of Biomaterials and Engineering, Showa University School of Dentistry, Tokyo, Japan
| | - Ryuji Hosokawa
- Division of Oral Reconstruction and Rehabilitation, Kyushu Dental University, Kitakyushu, Japan
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Yoo H, Park JB, Ko Y. Evaluation of health screening data for factors associated with peri-implant bone loss. J Periodontal Implant Sci 2022; 52:509-521. [PMID: 36584329 PMCID: PMC9807850 DOI: 10.5051/jpis.2203620181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 11/09/2022] [Accepted: 11/23/2022] [Indexed: 12/24/2022] Open
Abstract
PURPOSE Systemic health has a profound effect on dental treatment. The aim of this study was to evaluate peri-implant bone loss and health screening data to discover factors that may influence peri-implant diseases. METHODS This study analyzed the panoramic X-rays of patients undergoing health screenings at the Health Promotion Center at Seoul St. Mary's Hospital in 2018, to investigate the relationship between laboratory test results and dental data. The patients' physical data, such as height, weight, blood pressure, hematological and urine analysis data, smoking habits, number of remaining teeth, alveolar bone level, number of implants, and degree of bone loss around the implant, were analyzed for correlations. Their associations with glycated hemoglobin, glucose, blood urea nitrogen (BUN), creatinine, and severity of periodontitis were evaluated using univariate and multivariate regression analysis. RESULTS In total, 2,264 patients opted in for dental health examinations, of whom 752 (33.2%) had undergone dental implant treatment. These 752 patients had a total of 2,658 implants, and 129 (17.1%) had 1 or more implants with peri-implant bone loss of 2 mm or more. The number of these implants was 204 (7%). Body mass index and smoking were not correlated with peri-implant bone loss. Stepwise multivariate regression analysis revealed that the severity of periodontal bone loss (moderate bone loss: odds ratio [OR], 3.154; 95% confidence interval [CI], 1.175-8.475 and severe bone loss: OR, 7.751; 95% CI, 3.003-20) and BUN (OR, 1.082; 95% CI, 1.027-1.141) showed statistically significant predictive value. The severity of periodontitis showed greater predictive value than the biochemical parameters of blood glucose, renal function, and liver function. CONCLUSIONS The results of this study showed that periodontal bone loss was a predictor of peri-implant bone loss, suggesting that periodontal disease should be controlled before dental treatment. Diligent maintenance care is recommended for patients with moderate to severe periodontal bone loss.
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Affiliation(s)
- Hyunjong Yoo
- Graduate School of Clinical Dental Science, The Catholic University of Korea, Seoul, Korea
| | - Jun-Beom Park
- Graduate School of Clinical Dental Science, The Catholic University of Korea, Seoul, Korea.,Departement of Dentistry, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Youngkyung Ko
- Graduate School of Clinical Dental Science, The Catholic University of Korea, Seoul, Korea.,Departement of Dentistry, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Yuan Q. [Oral implant treatment for elderly patients]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2020; 38:616-621. [PMID: 33377336 PMCID: PMC7738919 DOI: 10.7518/hxkq.2020.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/01/2020] [Indexed: 02/05/2023]
Abstract
With the advance of materials and technologies, modern oral implantology developed rapidly. Dental implant has become the first choice to restore the missing teeth. Although it achieves a high success rate among healthy adults, for elderly patients, with the decline of physical function and other systemic diseases, the risks of implant treatment increase accordingly. Doctors should pay more attention to the factors that may affect the implant treatment of the elderly and ways of preventing possible risks and complications. Here we discuss the specificity, success rate, effect of systemic diseases and drug considerations of implant treatments in elderly patients.
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Affiliation(s)
- Quan Yuan
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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Xue H, Guo Y, Zhang S, Xu T, Wen J, Kang N, Yuan Q. The role of USP34 in the fixation of titanium implants in murine models. Eur J Oral Sci 2020; 128:211-217. [PMID: 32363724 DOI: 10.1111/eos.12696] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2020] [Indexed: 02/05/2023]
Abstract
Ubiquitin-specific protease 34 (USP34), a member of the ubiquitin-specific protease family, regulates osteogenic differentiation of bone marrow mesenchymal stem cells via bone morphogenetic protein signaling. This study aimed to investigate the role of USP34 in fixation of titanium implants in mouse models. Eight-week-old Usp34-knockout (Prx1-Cre;Usp34f/f ) mice and their Usp34 wild-type (Usp34f/f ) control littermates were used. Experimental titanium implants were inserted into the distal ends of femurs and the edentulous area of maxillae. Two and four weeks after surgery, samples of femur and maxilla were obtained, and micro-computed tomography scanning, histomorphometric analyses, and push-in tests were performed on the samples. Compared with controls, Prx1-Cre;Usp34f/f mice showed reduced bone volume for both femurs and maxillae; a decreased femoral bone-implant contact ratio (BIC) at 2 wk [mean (standard error of the mean): 62.17% (2.15%) vs. 44.06% (3.45%)] and 4 wk [72.46% (1.61%) vs. 64.53% (1.93%)]; decreases in femoral bone volume fraction (BV/TV) and push-in resistance; and lower BIC and BV/TV of the maxillae. Taken together, our data demonstrate that specific deletion of Usp34 in mesenchymal stem cells impairs fixation of titanium implants in mice.
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Affiliation(s)
- Hanxiao Xue
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuchen Guo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shiwen Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Tong Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Junru Wen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ning Kang
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Quan Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.,Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Liu W, Zhou L, Xue H, Li H, Yuan Q. Growth differentiation factor 11 impairs titanium implant healing in the femur and leads to mandibular bone loss. J Periodontol 2020; 91:1203-1212. [PMID: 31983062 DOI: 10.1002/jper.19-0247] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 12/24/2019] [Accepted: 12/25/2019] [Indexed: 02/05/2023]
Abstract
BACKGROUND Growth differentiation factor 11 (GDF11), a secreted member of the transforming growth factor-β superfamily, has recently been suggested as an anti-aging factor that declines with age in the bloodstream, and restoration of the youthful level by administration of its recombinant protein could reverse age-related dysfunctions. However, its effects on titanium implant osseointegration and mandibular bone during aging remain unknown. METHODS Two-month-old and 18-month-old C57BL male mice were given daily intraperitoneal injections of recombinant GDF11 (rGDF11) or vehicle for 6 weeks. Experimental titanium implants were inserted into femurs on the fourth week. Inhibition of GDF11 function was achieved by GDF11 antibody. Implant-bearing femurs were subjected to histomorphometric analysis and biomechanical evaluation. Mandibles were scanned with micro-CT and decalcified for histological measurements. RESULTS In both young adult and aged mice, supraphysiologic GDF11 leads to a significantly decreased bone-to-implant contact ratio (BIC) and peri-implant bone volume/total volume (BV/TV) at the histologic level and reduced resistance at the biomechanical level, indicating weakened implant fixation. Moreover, rGDF11 administration resulted in less trabecular bone volume and thinner cortical thickness in the mandible, which was further compromised in the old animals. In contrast, inhibition of GDF11 improved peri-implant bone healing in old mice. CONCLUSIONS Rather than functioning as a rejuvenating factor, exogenous GDF11 negatively affects not only titanium implant healing but also mandibular bone in both young and old mice. In contrast, neutralization of endogenous GDF11 has positive effects on implant fixation in aged mice.
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Affiliation(s)
- Weiqing Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Liyan Zhou
- Dept. of Implant, Stomatological Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Hanxiao Xue
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Hanshi Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Quan Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
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Tan RZ, Zhong X, Li JC, Zhang YW, Yan Y, Liao Y, Wen D, Diao H, Wang L, Shen HC. An optimized 5/6 nephrectomy mouse model based on unilateral kidney ligation and its application in renal fibrosis research. Ren Fail 2019; 41:555-566. [PMID: 31234688 PMCID: PMC6598497 DOI: 10.1080/0886022x.2019.1627220] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
5/6 Nephrectomy (PNx) on rat and mouse mimics renal failure after loss of kidney function in human, and it has been widely used in CKD researches. However, existing methods for PNx model construction present high mortality of animals after modeling due to hemorrhage and infection in or after surgery. Here, we report a novel and highly efficient PNx modeling method to simulate conventional 5/6 nephrectomy, which significantly reduced the mortality of animals and simplified the modeling procedures. In this novel modeling method, we directly ligated the upper and lower poles of left kidney after removal the right kidney 1 week later (l-PNx), which leads to necrosis of ligated upper and lower poles of the kidney and mimics the conventional 5/6 nephrectomy (c-PNx). After modeling 4 and 12 weeks, the serum creatinine, BUN and proteinuria levels were strongly increased in both c-PNx and l-PNx model. Importantly, compared with the c-PNx, l-PNx model present more severe renal fibrosis estimated by Masson staining, IHC and western blotting. The results showed that the protein levels of α-SMA were significantly increased in the kidney of c-PNx and l-PNx models, but more increase was found in l-PNx model. It is noteworthy that, compared with c-PNx model, the survival rate of l-PNx model was markedly increased. In summary, we established a novel and efficient 5/6 nephrectomy model, which can mimic conventional 5/6 nephrectomy to construct a renal fibrosis and renal failure mouse model, that is conducive to mechanism and treatment researches of CKD.
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Affiliation(s)
- Rui-Zhi Tan
- a Research Center of Integrated Chinese and Western Medicine , Affiliated Traditional Medicine Hospital, Southwest Medical University , Luzhou , China
| | - Xia Zhong
- a Research Center of Integrated Chinese and Western Medicine , Affiliated Traditional Medicine Hospital, Southwest Medical University , Luzhou , China
| | - Jian-Chun Li
- a Research Center of Integrated Chinese and Western Medicine , Affiliated Traditional Medicine Hospital, Southwest Medical University , Luzhou , China
| | - Yu-Wei Zhang
- a Research Center of Integrated Chinese and Western Medicine , Affiliated Traditional Medicine Hospital, Southwest Medical University , Luzhou , China
| | - Ying Yan
- a Research Center of Integrated Chinese and Western Medicine , Affiliated Traditional Medicine Hospital, Southwest Medical University , Luzhou , China
| | - Yuan Liao
- a Research Center of Integrated Chinese and Western Medicine , Affiliated Traditional Medicine Hospital, Southwest Medical University , Luzhou , China
| | - Dan Wen
- a Research Center of Integrated Chinese and Western Medicine , Affiliated Traditional Medicine Hospital, Southwest Medical University , Luzhou , China
| | - Hui Diao
- a Research Center of Integrated Chinese and Western Medicine , Affiliated Traditional Medicine Hospital, Southwest Medical University , Luzhou , China
| | - Li Wang
- a Research Center of Integrated Chinese and Western Medicine , Affiliated Traditional Medicine Hospital, Southwest Medical University , Luzhou , China
| | - Hong-Chun Shen
- a Research Center of Integrated Chinese and Western Medicine , Affiliated Traditional Medicine Hospital, Southwest Medical University , Luzhou , China.,b College of Integrated Chinese and Western Medicine , Southwest Medical University , Luzhou , China.,c Depertment of Nephrology , Affiliated Traditional Medicine Hospital, Southwest Medical University , Luzhou , China
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Neuburg S, Dussold C, Gerber C, Wang X, Francis C, Qi L, David V, Wolf M, Martin A. Genetic background influences cardiac phenotype in murine chronic kidney disease. Nephrol Dial Transplant 2019; 33:1129-1137. [PMID: 29309658 DOI: 10.1093/ndt/gfx332] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 11/03/2017] [Indexed: 01/01/2023] Open
Abstract
Background Levels of fibroblast growth factor 23 (FGF23) increase early in chronic kidney disease (CKD) and are independently associated with left ventricular hypertrophy (LVH), heart failure and death. Experimental models of CKD with elevated FGF23 and LVH are needed. We hypothesized that slow rates of CKD progression in the Col4a3 knockout (Col4a3KO) mouse model of CKD would promote development of LVH by prolonging exposure to elevated FGF23. Methods We studied congenic Col4a3KO and wild-type (WT) mice with either 75% 129X1/SvJ (129Sv) or 94% C57Bl6/J (B6) genomes. Results B6-Col4a3KO lived longer than 129Sv-Col4a3KO mice (21.4 ± 0.6 versus 11.4 ± 0.4 weeks; P < 0.05). 10-week-old 129Sv-Col4a3KO mice showed impaired renal function (blood urea nitrogen 191 ± 39 versus 34 ± 4 mg/dL), hyperphosphatemia (14.1 ± 1.4 versus 6.8 ± 0.3 mg/dL) and 33-fold higher serum FGF23 levels (P < 0.05 versus WT for each). Consistent with their slower CKD progression, 10 week-old B6-Col4a3KO mice showed milder impairment of renal function than 129Sv-Col4a3KO mice and modest FGF23 elevation without other alterations of mineral metabolism. At 20 weeks, further declines in renal function in B6-Col4a3KO mice was accompanied by hyperphosphatemia and 8-fold higher FGF23 levels (P < 0.05 versus WT for each). Only the 20-week-old B6-Col4a3KO mice developed LVH (LV mass 125 ± 3 versus 98 ± 6 mg; P < 0.05 versus WT) in association with significantly increased cardiac expression of FGF receptor 4 (FGFR4) messenger RNA and protein and markers of LVH (Atrial natriuretic peptide (ANP), B-type natriuretic peptide (BNP), beta-myosin heavy chain (β-MHC); P < 0.05 versus WT for each). Conclusions In conclusion, B6-Col4a3KO mice manifest slower CKD progression and longer survival than 129Sv-Col4a3KO mice and can serve as a novel model of cardiorenal disease.
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Affiliation(s)
- Samantha Neuburg
- Division of Nephrology and Hypertension, Department of Medicine, Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Corey Dussold
- Division of Nephrology and Hypertension, Department of Medicine, Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Claire Gerber
- Division of Nephrology and Hypertension, Department of Medicine, Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Xueyan Wang
- Division of Nephrology and Hypertension, Department of Medicine, Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Connor Francis
- Division of Nephrology and Hypertension, Department of Medicine, Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Lixin Qi
- Division of Nephrology and Hypertension, Department of Medicine, Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Valentin David
- Division of Nephrology and Hypertension, Department of Medicine, Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Myles Wolf
- Division of Nephrology, Department of Medicine, Duke Clinical Research Institute, Duke University, Durham, NC, USA
| | - Aline Martin
- Division of Nephrology and Hypertension, Department of Medicine, Center for Translational Metabolism and Health, Institute for Public Health and Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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Acipinar S, Karsiyaka Hendek M, Olgun E, Kisa U. Evaluation of FGF-23 and 25(OH)D 3 levels in peri-implant sulcus fluid in peri-implant health and diseases. Clin Implant Dent Relat Res 2019; 21:1106-1112. [PMID: 31407857 DOI: 10.1111/cid.12832] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 07/22/2019] [Accepted: 07/24/2019] [Indexed: 01/01/2023]
Abstract
BACKGROUND There are limited studies to date investigating vitamin D and fibroblast growth factor (FGF)-23 in different peri-implant conditions. PURPOSE To evaluate the peri-implant sulcus fluid (PISF) FGF-23 and 25-hydroxy-vitamin D3 (25(OH)D3 ) levels in peri-implant health and diseases. MATERIALS AND METHODS A total of 90 dental implant sites (peri-implant healthy group [n = 30], peri-implant mucositis group [n = 30], and peri-implantitis group [n = 30]) in 53 participants were included in the study. Probing depth (PD), clinical attachment level (CAL), suppuration (S), modified plaque index (mPI), gingival index (GI), modified sulcus bleeding index (mSBI), and keratinized mucosa width (KMW) were recorded as clinical parameters, and PISF samples were obtained. FGF-23 and 25(OH)D3 levels were analyzed by enzyme-linked immunosorbent assay. RESULTS There were no statistically significant differences in FGF-23 concentrations among the groups (P > .05). The 25(OH)D3 concentration was significantly lower in peri-implantitis group compared with the other two groups (P < .05). The mean total amount of FGF-23 in the peri-implantitis group was significantly higher than the peri-implant healthy group whereas 25(OH)D3 total amount was significantly lower in the peri-implantitis group than the peri-implant healthy group. The 25(OH)D3 concentration was significantly negatively correlated with CAL, PD, mPI, S, GI, and mSBI and statistically significant relationship was found between FGF-23 total amount and these clinical parameters (P < .05). There was a negligible positive correlation between 25(OH)D3 and FGF-23 concentrations (τ = 0.169; P = .018). CONCLUSION Within the limitations of this study, it can be concluded that FGF-23 and vitamin D seems to affect peri-implant bone health, and further studies are needed to explain the association between FGF-23 and 25(OH)D3 in peri-implant conditions.
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Affiliation(s)
- Sukran Acipinar
- Department of Periodontology, Kirikkale University Faculty of Dentistry, Turkey
| | | | - Ebru Olgun
- Department of Periodontology, Kirikkale University Faculty of Dentistry, Turkey
| | - Ucler Kisa
- Department of Biochemistry, Kirikkale University Faculty of Medicine, Turkey
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Morinaga K, Sasaki H, Park S, Hokugo A, Okawa H, Tahara Y, Colwell CS, Nishimura I. Neuronal PAS domain 2 (Npas2) facilitated osseointegration of titanium implant with rough surface through a neuroskeletal mechanism. Biomaterials 2018; 192:62-74. [PMID: 30428407 DOI: 10.1016/j.biomaterials.2018.11.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 11/01/2018] [Accepted: 11/02/2018] [Indexed: 12/13/2022]
Abstract
Titanium (Ti) biomaterials have been applied to a wide range of implantable medical devices. When placed in bone marrow, Ti-biomaterials integrate to the surrounding bone tissue by mechanisms that are not fully understood. We have previously identified an unexpected upregulation of circadian clock molecule neuronal PAS domain 2 (Npas2) in successfully integrated implant with a rough surface. This study aimed to elucidate the molecular mechanism of osseointegration through determining the role of Npas2. Human bone marrow stromal cells (BMSC) that were cultured on a Ti disc with SLA surface exhibited increased NPAS2 expression compared to BMSC cultured on a machined surface. A mouse model was developed in which miniature Ti implants were surgically placed into femur bone marrow. The implant push-out test and bone-to-implant contact measurements demonstrated the establishment of osseointegration in 3 weeks. By contrast, in Npas2 functional knockout (KO) mice, the implant push-out value measured for SLA surface Ti implant was significantly decreased. Npas2 KO mice demonstrated normal femur bone structure surrounding the Ti implant; however, the recovered implants revealed abnormal remnant mineralized tissue, which lacked dense collagen architecture typically found on recovered implants from wild type mice. To explore the mechanisms leading to the induced Npas2 expression, an unbiased chemical genetics analysis was conducted using mouse BMSC carrying an Npas2-reporter gene for high throughput screening of Library of Pharmacologically Active Compounds. Npas2 modulating compounds were found clustered in regulatory networks of the α2-adrenergic receptor and its downstream cAMP/CREB signaling pathway. Mouse primary BMSC exposed to SLA Ti disc significantly increased the expression of α2-adrenergic receptors, but the expression of β2-adrenergic receptor was unaffected. Our data provides the first evidence that peripheral clock gene component Npas2 plays a role in facilitating the enhanced osseointegration through neuroskeletal regulatory pathways induced by BMSC in contact with rough surface Ti implant.
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Affiliation(s)
- Kenzo Morinaga
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA, USA; Department of Oral Rehabilitation, Section of Oral Implantology, Fukuoka Dental College, Fukuoka, Japan
| | - Hodaka Sasaki
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA, USA; Department of Oral and Maxillofacial Implantology, Tokyo Dental College, Tokyo, Japan
| | - Sil Park
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA, USA
| | - Akishige Hokugo
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA, USA; Regenerative Bioengineering and Repair Laboratory, Division of Plastic and Reconstructive Surgery, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Hiroko Okawa
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA, USA; Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Yu Tahara
- Department of Psychiatry & Biobehavioral Science, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Christopher S Colwell
- Department of Psychiatry & Biobehavioral Science, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Ichiro Nishimura
- Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA, USA.
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11
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AFF1 and AFF4 differentially regulate the osteogenic differentiation of human MSCs. Bone Res 2017; 5:17044. [PMID: 28955517 PMCID: PMC5613922 DOI: 10.1038/boneres.2017.44] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Revised: 06/18/2017] [Accepted: 06/18/2017] [Indexed: 02/05/2023] Open
Abstract
AFF1 and AFF4 belong to the AFF (AF4/FMR2) family of proteins, which function as scaffolding proteins linking two different transcription elongation factors, positive elongation factor b (P-TEFb) and ELL1/2, in super elongation complexes (SECs). Both AFF1 and AFF4 regulate gene transcription through elongation and chromatin remodeling. However, their function in the osteogenic differentiation of mesenchymal stem cells (MSCs) is unknown. In this study, we show that small interfering RNA (siRNA)-mediated depletion of AFF1 in human MSCs leads to increased alkaline phosphatase (ALP) activity, enhanced mineralization and upregulated expression of osteogenic-related genes. On the contrary, depletion of AFF4 significantly inhibits the osteogenic potential of MSCs. In addition, we confirm that overexpression of AFF1 and AFF4 differentially affects osteogenic differentiation in vitro and MSC-mediated bone formation in vivo. Mechanistically, we find that AFF1 regulates the expression of DKK1 via binding to its promoter region. Depletion of DKK1 in HA-AFF1-overexpressing MSCs abrogates the impairment of osteogenic differentiation. Moreover, we detect that AFF4 is enriched in the promoter region of ID1. AFF4 knockdown blunts the BRE luciferase activity, SP7 expression and ALP activity induced by BMP2 treatment. In conclusion, our data indicate that AFF1 and AFF4 differentially regulate the osteogenic differentiation of human MSCs.
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12
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Zhou Y, Zheng L, Li F, Wan M, Fan Y, Zhou X, Du W, Pi C, Cui D, Zhang B, Sun J, Zhou X. Bivalent Histone Codes on WNT5A during Odontogenic Differentiation. J Dent Res 2017; 97:99-107. [PMID: 28880717 DOI: 10.1177/0022034517728910] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Lineage-committed differentiation is an essential biological program during odontogenesis, which is tightly regulated by lineage-specific genes. Some of these genes are modified by colocalization of H3K4me3 and H3K27me3 marks at promoter regions in progenitors. These modifications, named "bivalent domains," maintain genes in a poised state and then resolve for later activation or repression during differentiation. Wnt5a has been reported to promote odontogenic differentiation in dental mesenchyme. However, relatively little is known about the epigenetic modulations on Wnt5a activation during tooth development. Here, we investigated the spatiotemporal patterns of H3K4me3 and H3K27me3 marks in developing mouse molars. Associated H3K4me3 methylases (mixed-lineage leukemia [MLL] complex) and H3K27me3 demethylases (JMJD3 and UTX) were dynamically expressed between early and late bell stage of human tooth germs and in cultured human dental papilla cells (hDPCs) during odontogenic induction. Poised WNT5A gene was marked by bivalent domains containing repressive marks (H3K27me3) and active marks (H3K4me3) on promoters. The bivalent domains tended to resolve during inducted differentiation, with removal of the H3K27me3 mark in a JMJD3-dependent manner. When JMJD3 was knocked down in cultured hDPCs, odontogenic differentiation was suppressed. The depletion of JMJD3 epigenetically repressed WNT5A activation by increased H3K27me3 marks. In addition, JMJD3 could physically interact with ASH2L, a component of the MLL complex, to form a coactivator complex, cooperatively modulating H3K4me3 marks on WNT5A promoters. Overall, our study reveals that transcription activities of WNT5A were epigenetically regulated by the negotiated balance between H3K27me3 and H3K4me3 marks and tightly mediated by JMJD3 and MLL coactivator complex, ultimately modulating odontogenic commitment during dental mesenchymal cell differentiation.
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Affiliation(s)
- Y Zhou
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - L Zheng
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - F Li
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - M Wan
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Fan
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Zhou
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - W Du
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - C Pi
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - D Cui
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - B Zhang
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - J Sun
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Zhou
- 1 State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Yuan Q, Xiong QC, Gupta M, López-Pintor RM, Chen XL, Seriwatanachai D, Densmore M, Man Y, Gong P. Dental implant treatment for renal failure patients on dialysis: a clinical guideline. Int J Oral Sci 2017; 9:125-132. [PMID: 28644432 PMCID: PMC5709544 DOI: 10.1038/ijos.2017.23] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/17/2017] [Indexed: 02/05/2023] Open
Abstract
Chronic kidney disease (CKD) is a worldwide public health problem that is growing in prevalence and is associated with severe complications. During the progression of the disease, a majority of CKD patients suffer oral complications. Dental implants are currently the most reliable and successful treatment for missing teeth. However, due to complications of CKD such as infections, bone lesions, bleeding risks, and altered drug metabolism, dental implant treatment for renal failure patients on dialysis is more challenging. In this review, we have summarized the characteristics of CKD and previous publications regarding dental treatments for renal failure patients. In addition, we discuss our recent research results and clinical experience in order to provide dental implant practitioners with a clinical guideline for dental implant treatment for renal failure patients undergoing hemodialysis.
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Affiliation(s)
- Quan Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qiu-Chan Xiong
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Megha Gupta
- Department of Preventive Dental Sciences, Division of Pedodontics, College of Dentistry, Al-Showajra Academic Campus, Jazan University, Gizan, Kingdom of Saudi Arabia
| | - Rosa María López-Pintor
- Department of Oral Medicine and Surgery, School of Dentistry, Complutense University, Madrid, Spain
| | - Xiao-Lei Chen
- Department of Nephrology, West China Hospital, Sichuan University, Chengdu, China
| | | | - Michael Densmore
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, USA
| | - Yi Man
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ping Gong
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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14
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Kaludjerovic J, Komaba H, Sato T, Erben RG, Baron R, Olauson H, Larsson TE, Lanske B. Klotho expression in long bones regulates FGF23 production during renal failure. FASEB J 2017; 31:2050-2064. [PMID: 28183805 DOI: 10.1096/fj.201601036r] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 01/17/2017] [Indexed: 12/24/2022]
Abstract
Circulating levels of bone-derived fibroblast growth factor 23 (FGF23) increase early during acute and chronic kidney disease and are associated with adverse outcomes. Membrane-bound Klotho acts as a permissive coreceptor for FGF23, and its expression was recently found in osteoblasts/osteocytes. We hypothesized that Klotho in bone cells is part of an autocrine feedback loop that regulates FGF23 expression during renal failure. Thus, we induced renal failure in mice with targeted deletion of Klotho in long bones. Uremic wild-type (KLfl/fl ) and knockout (Prx1-Cre;KLfl/fl ) mice both responded with reduced body weight, kidney atrophy, hyperphosphatemia, and increased bone turnover. Importantly, long bones of Prx1-Cre;KLfl/fl mice but not their axial skeleton failed to increase FGF23 expression as observed in uremic KLfl/fl mice. Consequently, Prx1-Cre;KLfl/fl mice had significantly lower serum FGF23 and parathyroid hormone levels, and higher renal 1-α-hydroxylase expression, serum 1,25-dihydroxyvitamin D, and calcium levels than KLfl/fl mice. These results were confirmed in two independent models of renal failure, adenine diet induced and 5/6 nephrectomy. Moreover, FGF23-treated bone cells required Klotho to increase FGF23 mRNA and ERK phosphorylation. In summary, our novel findings show that Klotho in bone is crucial for inducing FGF23 production upon renal failure. We propose the presence of an autocrine feedback loop in which Klotho senses the need for FGF23.-Kaludjerovic, J., Komaba, H., Sato, T., Erben, R. G., Baron, R., Olauson, H., Larsson, T. E., Lanske, B. Klotho expression in long bones regulates FGF23 production during renal failure.
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Affiliation(s)
- Jovana Kaludjerovic
- Division of Bone and Mineral Research, Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Hirotaka Komaba
- Division of Bone and Mineral Research, Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Tadatoshi Sato
- Division of Bone and Mineral Research, Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Reinhold G Erben
- Unit of Physiology, Pathophysiology, and Experimental Endocrinology, University of Veterinary Medicine, Vienna, Austria
| | - Roland Baron
- Division of Bone and Mineral Research, Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, USA.,Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Hannes Olauson
- Division of Renal Medicine, Department of Clinical Sciences, Intervention, and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Tobias E Larsson
- Division of Renal Medicine, Department of Clinical Sciences, Intervention, and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Beate Lanske
- Division of Bone and Mineral Research, Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, USA; .,Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
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15
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Xiang L, Ma L, Wei N, Wang T, Yao Q, Yang B, Xiong Y, Wu Y, Gong P. Effect of lentiviral vector overexpression α-calcitonin gene-related peptide on titanium implant osseointegration in α-CGRP-deficient mice. Bone 2017; 94:135-140. [PMID: 26265538 DOI: 10.1016/j.bone.2015.08.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2015] [Revised: 07/31/2015] [Accepted: 08/07/2015] [Indexed: 02/05/2023]
Abstract
α-Calcitonin gene-related peptide (α-CGRP) plays a significant pathophysiological role in bone development, metabolism and remodeling around dental implants. However, the half-life of α-CGRP in plasma is only 10min, which affects its long-time application and an alternative approach should be developed to deliver α-CGRP over long periods of time. The aim of this study is to investigate whether a lentiviral α-CGRP overexpression vector system can express this target-gene longer at peri-implant sites, thus enhancing osseointegration. Animals were divided to the following groups: α-CGRP-/-, α-CGRP-/- with lentivirus transfection and α-CGRP+/+ mice. IVIS Spectrum imaging observations identified the successful transfection of α-CGRP around experimental implants inserted in the femurs at 5days after injection. Histomorphometrical analysis indicated an increase of bone-implant contact (BIC) at 1-month healing in the transfection group. Moreover, real-time RT-PCR and western blot results of bone-related markers Runx2, Osterix, and BSP levels elevated in lentivirus-transfected mice at 21days, compared to the untreated α-CGRP-/- mice. There was no significant difference between the transfection group and α-CGRP+/+ group. Further α-CGRP protein detection confirmed the persistent expression of this transgene at 21days post-operatively. These results suggest that this lentiviral vector system expresses α-CGRP in an effective, appropriate and sustained manner, which might have a potential application in enhancing titanium implant osseointegration.
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Affiliation(s)
- Lin Xiang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China; Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Li Ma
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China; Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Na Wei
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China; Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Tianlu Wang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China; Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qianqian Yao
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China; Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Bo Yang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China; Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yi Xiong
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China; Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yingying Wu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China; Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ping Gong
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China; Department of Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
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16
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Zheng X, Mo A, Wang Y, Guo Y, Wu Y, Yuan Q. Effect of FK-506 (tacrolimus) therapy on bone healing of titanium implants: a histometric and biomechanical study in mice. Eur J Oral Sci 2016; 125:28-33. [PMID: 27935130 DOI: 10.1111/eos.12320] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/24/2016] [Indexed: 02/05/2023]
Affiliation(s)
- Xiaofei Zheng
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu China
- Dental Implant Center; West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - Anchun Mo
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu China
- Dental Implant Center; West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - Yuan Wang
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu China
- Dental Implant Center; West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - Yuchen Guo
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu China
- Dental Implant Center; West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - Yunshu Wu
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu China
- Dental Implant Center; West China Hospital of Stomatology; Sichuan University; Chengdu China
| | - Quan Yuan
- State Key Laboratory of Oral Diseases; West China Hospital of Stomatology; Sichuan University; Chengdu China
- Dental Implant Center; West China Hospital of Stomatology; Sichuan University; Chengdu China
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17
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Zhou C, Liu Y, Li X, Zou J, Zou S. DNA N 6-methyladenine demethylase ALKBH1 enhances osteogenic differentiation of human MSCs. Bone Res 2016; 4:16033. [PMID: 27785372 PMCID: PMC5057179 DOI: 10.1038/boneres.2016.33] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 08/13/2016] [Accepted: 08/14/2016] [Indexed: 02/05/2023] Open
Abstract
ALKBH1 was recently discovered as a demethylase for DNA N6-methyladenine (N6-mA), a new epigenetic modification, and interacts with the core transcriptional pluripotency network of embryonic stem cells. However, the role of ALKBH1 and DNA N6-mA in regulating osteogenic differentiation is largely unknown. In this study, we demonstrated that the expression of ALKBH1 in human mesenchymal stem cells (MSCs) was upregulated during osteogenic induction. Knockdown of ALKBH1 increased the genomic DNA N6-mA levels and significantly reduced the expression of osteogenic-related genes, alkaline phosphatase activity, and mineralization. ALKBH1-depleted MSCs also exhibited a restricted capacity for bone formation in vivo. By contrast, the ectopic overexpression of ALKBH1 enhanced osteoblastic differentiation. Mechanically, we found that the depletion of ALKBH1 resulted in the accumulation of N6-mA on the promoter region of ATF4, which subsequently silenced ATF4 transcription. In addition, restoring the expression of ATP by adenovirus-mediated transduction successfully rescued osteogenic differentiation. Taken together, our results demonstrate that ALKBH1 is indispensable for the osteogenic differentiation of MSCs and indicate that DNA N6-mA modifications area new mechanism for the epigenetic regulation of stem cell differentiation.
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Affiliation(s)
- Chenchen Zhou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University , Chengdu, China
| | - Yuting Liu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University , Chengdu, China
| | - Xiaobing Li
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University , Chengdu, China
| | - Jing Zou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University , Chengdu, China
| | - Shujuan Zou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University , Chengdu, China
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19
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Liu W, Kang N, Seriwatanachai D, Dong Y, Zhou L, Lin Y, Ye L, Liang X, Yuan Q. Chronic Kidney Disease Impairs Bone Defect Healing in Rats. Sci Rep 2016; 6:23041. [PMID: 26955758 PMCID: PMC4783709 DOI: 10.1038/srep23041] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 02/29/2016] [Indexed: 02/05/2023] Open
Abstract
Chronic kidney disease (CKD) has been regarded as a risk for bone health. The aim of this study was to evaluate the effect of CKD on bone defect repair in rats. Uremia was induced by subtotal renal ablation, and serum levels of BUN and PTH were significantly elevated four weeks after the second renal surgery. Calvarial defects of 5-mm diameter were created and implanted with or without deproteinized bovine bone mineral (DBBM). Micro-CT and histological analyses consistently revealed a decreased newly regenerated bone volume for CKD rats after 4 and 8 weeks. In addition, 1.4-mm-diameter cortical bone defects were established in the distal end of femora and filled with gelatin sponge. CKD rats exhibited significantly lower values of regenerated bone and bone mineral density (BMD) within the cortical gap after 2 and 4 weeks. Moreover, histomorphometric analysis showed an increase in both osteoblast number (N.Ob/B.Pm) and osteoclast number (N.Oc/B.Pm) in CKD groups due to hyperparathyroidism. Notably, collagen maturation was delayed in CKD rats as verified by Masson’s Trichrome staining. These data indicate that declined renal function negatively affects bone regeneration in both calvarial and femoral defects.
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Affiliation(s)
- Weiqing Liu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ning Kang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | | | - Yuliang Dong
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Liyan Zhou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yunfeng Lin
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ling Ye
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xing Liang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Quan Yuan
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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20
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Estrogen Deficiency Leads to Further Bone Loss in the Mandible of CKD Mice. PLoS One 2016; 11:e0148804. [PMID: 26886008 PMCID: PMC4757532 DOI: 10.1371/journal.pone.0148804] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 01/22/2016] [Indexed: 02/05/2023] Open
Abstract
Background Chronic kidney disease (CKD) has been regarded as a grave public health problem. Estrogen is a critical factor for both renal protection and bone remodeling. Our previous study demonstrated that CKD impairs the healing of titanium implants. The aim of this study was to investigate the effects of estrogen deficiency on the mandibular bone in CKD mice. Methods Forty eleven-week-old female C57BL mice were used in this study. Uremia and estrogen deficiency were induced by 5/6 nephrectomy and ovariectomy (OVX), respectively. After 8 weeks, the mice were sacrificed, and their mandibles were collected for micro-CT analysis and histological examination. Results All the mice survived the experimental period. Serum measurements confirmed a significant increase in BUN in the CKD group that was further increased by OVX. OVX led to significant decreases in both the BV/TV and cortical thickness of the mandibular bone in CKD mice. Conclusion In summary, our findings indicate that estrogen deficiency leads to further mandibular bone loss in CKD mice.
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Zhang S, Guo Y, Zou H, Sun N, Zhao D, Liu W, Dong Y, Cheng G, Yuan Q. Effect of estrogen deficiency on the fixation of titanium implants in chronic kidney disease mice. Osteoporos Int 2015; 26:1073-80. [PMID: 25366374 DOI: 10.1007/s00198-014-2952-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 10/27/2014] [Indexed: 02/05/2023]
Abstract
UNLABELLED We established a chronic kidney disease (CKD) mouse model with estrogen deficiency and inserted titanium implants into the femur of such mice to investigate the fixation of the implants. Both the histomorphometry and implant resistance indicated that estrogen deficiency impaired the fixation of titanium implants inserted into such mice. INTRODUCTION CKD has been regarded as a worldwide public health problem. Estrogen is a critical factor for both renal protection and bone remodeling. A previous study demonstrated that CKD impairs the early healing of titanium implants. However, the combined effect of estrogen deficiency and CKD on the fixation of titanium implants is largely unknown. METHODS Forty 9-week-old female C57BL mice were randomly divided into sham, ovariectomy (OVX), CKD, and CKD + OVX groups. Uremia and estrogen deficiency were induced by 5/6 nephrectomy and OVX, respectively. Experimental titanium implants were inserted into the distal end of the femur. Bone-implant contact (BIC) ratio and bone volume (BV/TV) around the implants were histomorphometrically analyzed. The fixation strength of the implant was measured by a biomechanical push-in resistance test. RESULTS Serum measurement confirmed a significant increase in serum blood urea nitrogen (BUN) in the CKD group, which was further increased by OVX. Estrogen deficiency led to significant decreases in the BIC ratio, BV/TV, and the push-in resistance in CKD animals. There was a significant interaction between the effects of OVX and CKD, with OVX exacerbating the effects of CKD on BIC ratio and push-in resistance. CONCLUSIONS The results indicated that estrogen deficiency exerts a synergistic effect with CKD and further impairs the fixation of titanium implants in CKD mice.
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Affiliation(s)
- S Zhang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, 14 Third Section, Renmin Nan Road, 610041, Chengdu, China
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Sun N, Guo Y, Liu W, Densmore M, Shalhoub V, Erben RG, Ye L, Lanske B, Yuan Q. FGF23 neutralization improves bone quality and osseointegration of titanium implants in chronic kidney disease mice. Sci Rep 2015; 5:8304. [PMID: 25665715 PMCID: PMC4322353 DOI: 10.1038/srep08304] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Accepted: 12/16/2014] [Indexed: 02/05/2023] Open
Abstract
Chronic kidney disease (CKD) is a worldwide health problem. Serum levels of FGF23, a phosphaturic hormone, increase at the earliest stages of CKD, and have been found to be independently associated with the mortality and morbidity of CKD patients. The purpose of this study was to evaluate whether FGF23 neutralization was able to improve bone quality and osseointegration of titanium implants. Uremia was induced by 5/6 nephrectomy in adult female mice. Postsurgery, the mice were injected with vehicle or FGF23 neutralizing antibody (5 mg/kg body weight) 3 times a week. Experimental titanium implants were inserted in the distal end of the femurs. FGF23 neutralization significantly increased serum phosphate, 1,25(OH)2D and BUN, and decreased serum PTH and FGF23, relative to vehicle-treated CKD mice. Histomorphometric analysis of the tibiae indicated that FGF23 neutralization normalized the osteoidosis observed in vehicle-treated CKD mice. Although bone-implant contact ratio remained unchanged by anti-FGF23 antibody treatment, the strength of osseointegration, as evidenced by a biomechanical push-in test, was significantly improved by FGF23 neutralization. Our findings revealed that FGF23 neutralization effectively improves bone quality and osseointegration of titanium implants in CKD mice, suggesting FGF23 as a key factor of CKD related bone diseases.
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Affiliation(s)
- Ningyuan Sun
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuchen Guo
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Weiqing Liu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Michael Densmore
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA
| | | | - Reinhold G Erben
- Department of Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria
| | - Ling Ye
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Beate Lanske
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA
| | - Quan Yuan
- 1] State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China [2] Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA
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Assessment of residual alveolar bone volume in hemodialysis patients using CBCT. Clin Oral Investig 2015; 19:1619-24. [PMID: 25617025 DOI: 10.1007/s00784-014-1393-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 12/18/2014] [Indexed: 02/05/2023]
Abstract
BACKGROUND The study aims to assess the residual alveolar bone volume in Chinese chronic kidney disease (CKD) patients undergoing hemodialysis (HD) using cone-beam computed tomography (CBCT). MATERIALS AND METHODS Two hundred and eight HD patients and healthy controls were enrolled to undergo CBCT examination. To evaluate residual alveolar bone volume, bone height was measured from the alveolar crest (AC) to the maxillary sinus floor or the mandibular nerve canal, whereas bone width was measured at a depth of 1.0, 3.0, and 6.0 mm apical to the AC. RESULTS There was no significant difference in demographics and the extent of tooth loss between HD patients and control group. Both groups showed abundant residual bone volume. However, the heights of residual alveolar bone at the upper premolars and first molar in HD patients were significantly lower than those of the control group (p < 0.05). No significant difference was observed for alveolar bone at the lower premolars and molars. The bone width showed statistical differences for HD patients' upper second molars, lower first premolars, and second molars (p < 0.05). CONCLUSIONS While the residual bone was sufficient for implant placement, HD patients exhibited with significantly lower residual bone height at the sites of the upper premolars and first molar and varied residual bone width depending on the location. CLINICAL RELEVANCE Owing to these changes, special cautions need to be taken for patients undergoing HD or with chronically impaired renal functions during implant treatment planning.
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Liu W, Zhang S, Zhao D, Zou H, Sun N, Liang X, Dard M, Lanske B, Yuan Q. Vitamin D supplementation enhances the fixation of titanium implants in chronic kidney disease mice. PLoS One 2014; 9:e95689. [PMID: 24752599 PMCID: PMC3994107 DOI: 10.1371/journal.pone.0095689] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 03/30/2014] [Indexed: 02/05/2023] Open
Abstract
Vitamin D (Vit D) deficiency is a common condition in chronic kidney disease (CKD) patients that negatively affects bone regeneration and fracture healing. Previous study has shown that timely healing of titanium implants is impaired in CKD. This study aimed to investigate the effect of Vit D supplementation on implant osseointegration in CKD mice. Uremia was induced by 5/6 nephrectomy in C57BL mice. Eight weeks after the second renal surgery, animals were given 1,25(OH)2D3 three times a week intraperitoneally for four weeks. Experimental titanium implants were inserted into the distal end of femurs two weeks later. Serum measurements confirmed decreased 1,25(OH)2D levels in CKD mice, which could be successfully corrected by Vit D injections. Moreover, the hyperparathyroidism observed in CKD mice was also corrected. X-ray examination and histological sections showed successful osseointegration in these mice. Histomorphometrical analysis revealed that the bone-implant contact (BIC) ratio and bone volume (BV/TV) around the implant were significantly increased in the Vit D-supplementation group. In addition, resistance of the implant, as measured by a push-in method, was significantly improved compared to that in the vehicle group. These results demonstrate that Vit D supplementation is an effective approach to improve the fixation of titanium implants in CKD.
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Affiliation(s)
- Weiqing Liu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shiwen Zhang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Dan Zhao
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Huawei Zou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ningyuan Sun
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xing Liang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Michel Dard
- Department of Periodontology and Implant Dentistry, New York University College of Dentistry, New York, United States of America
| | - Beate Lanske
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental medicine, Boston, Massachusetts, United States of America
| | - Quan Yuan
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- * E-mail:
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