1
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Duan Y, Jin C, Wu Y, Chen Y, Zhang M, Qian J, Shuai T, Li J, Chen H, Li D. CREB1 alleviates the apoptosis and potentiates the osteogenic differentiation of zoledronic acid-treated human periodontal ligament stem cells via up-regulating VEGF. Tissue Cell 2023; 85:102223. [PMID: 37776785 DOI: 10.1016/j.tice.2023.102223] [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] [Received: 06/08/2023] [Revised: 09/04/2023] [Accepted: 09/20/2023] [Indexed: 10/02/2023]
Abstract
Periodontitis represents a severe inflammatory illness in tooth supporting tissue. It has been supported that cAMP response element binding protein 1 (CREB1), a common transcription factor, extensively participates in osteogenic differentiation. Here, the current study was to look into the impacts of CREB1 on the process of periodontitis and its possible action mechanism. After human periodontal ligament stem cells (PDLSCs) were challenged with zoledronic acid (ZA), CREB1 expression was examined with RT-qPCR and western blotting. CCK-8 assay appraised cell activity. Following CREB1 elevation or/and vascular endothelial growth factor (VEGF) silencing in ZA-treated PDLSCs, CCK-8 and TUNEL assays separately estimated cell viability and apoptosis. Western blotting tested the expression of apoptosis- and osteogenic differentiation-associated proteins. ALP staining measured PDLSCs osteogenic ability and ARS staining estimated mineralized nodule formation. JASPAR predicted the potential binding of CREB1 with VEGF promoter, which was then testified by ChIP and luciferase reporter assays. RT-qPCR and western blotting tested VEGF expression. CREB1 expression was declined in ZA-exposed PDLSCs and CREB1 elevation exacerbated the viability and osteogenic differentiation while obstructed the apoptosis of PDLSCs. Additionally, CREB1 bond to VEGF promoter and transcriptionally activated VEGF expression. Further, VEGF absence partially stimulated the apoptosis while suppressed the osteogenic differentiation of CREB1-overexpressing PDLSCs treated by ZA. To be concluded, CREB1 might activate VEGF transcription to obstruct the apoptosis while contribute to the osteogenic differentiation of ZA-treated PDLSCs.
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Affiliation(s)
- Yao Duan
- Second Clinical Division, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China
| | - Chanyuan Jin
- Second Clinical Division, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China
| | - Yuwei Wu
- Second Clinical Division, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China
| | - Yan Chen
- Second Clinical Division, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China
| | - Minjuan Zhang
- Second Clinical Division, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China
| | - Jun Qian
- Second Clinical Division, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China
| | - Ting Shuai
- Second Clinical Division, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China
| | - Jian Li
- Department of Stomatology, Xiang'An Hospital of Xiamen University, Xiamen 361100, PR China
| | - Huimin Chen
- Department of General Dentistry II, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China.
| | - Dan Li
- Second Clinical Division, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, PR China.
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2
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Donos N, Akcali A, Padhye N, Sculean A, Calciolari E. Bone regeneration in implant dentistry: Which are the factors affecting the clinical outcome? Periodontol 2000 2023; 93:26-55. [PMID: 37615306 DOI: 10.1111/prd.12518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 07/08/2023] [Accepted: 08/01/2023] [Indexed: 08/25/2023]
Abstract
The key factors that are needed for bone regeneration to take place include cells (osteoprogenitor and immune-inflammatory cells), a scaffold (blood clot) that facilitates the deposition of the bone matrix, signaling molecules, blood supply, and mechanical stability. However, even when these principles are met, the overall amount of regenerated bone, its stability over time and the incidence of complications may significantly vary. This manuscript provides a critical review on the main local and systemic factors that may have an impact on bone regeneration, trying to focus, whenever possible, on bone regeneration simultaneous to implant placement to treat bone dehiscence/fenestration defects or for bone contouring. In the future, it is likely that bone tissue engineering will change our approach to bone regeneration in implant dentistry by replacing the current biomaterials with osteoinductive scaffolds combined with cells and mechanical/soluble factors and by employing immunomodulatory materials that can both modulate the immune response and control other bone regeneration processes such as osteogenesis, osteoclastogenesis, or inflammation. However, there are currently important knowledge gaps on the biology of osseous formation and on the factors that can influence it that require further investigation. It is recommended that future studies should combine traditional clinical and radiographic assessments with non-invasive imaging and with patient-reported outcome measures. We also envisage that the integration of multi-omics approaches will help uncover the mechanisms responsible for the variability in regenerative outcomes observed in clinical practice.
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Affiliation(s)
- Nikolaos Donos
- Centre for Oral Clinical Research, Institute of Dentistry, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Aliye Akcali
- Centre for Oral Clinical Research, Institute of Dentistry, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
- Department of Periodontology, Faculty of Dentistry, Dokuz Eylul University, Izmir, Turkey
| | - Ninad Padhye
- Centre for Oral Clinical Research, Institute of Dentistry, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Anton Sculean
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Elena Calciolari
- Centre for Oral Clinical Research, Institute of Dentistry, Faculty of Medicine and Dentistry, Queen Mary University of London, London, UK
- Department of Medicine and Dentistry, Dental School, University of Parma, Parma, Italy
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3
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Zhang Y, Jia S, Wen G, Xie S, Song Z, Qi M, Liang Y, Bi W, Dong W. Zoledronate Promotes Peri-Implant Osteogenesis in Diabetic Osteoporosis by the AMPK Pathway. Calcif Tissue Int 2023; 113:329-343. [PMID: 37392365 DOI: 10.1007/s00223-023-01112-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 06/23/2023] [Indexed: 07/03/2023]
Abstract
Together with diabetic osteoporosis (DOP), diabetes patients experience poor peri-implant osteogenesis following implantation for dentition defects. Zoledronate (ZOL) is widely used to treat osteoporosis clinically. To evaluate the mechanism of ZOL for the treatment of DOP, experiments with DOP rats and high glucose-grown MC3T3-E1 cells were used. The DOP rats treated with ZOL and/or ZOL implants underwent a 4-week implant-healing interval, and then microcomputed tomography, biomechanical testing, and immunohistochemical staining were performed to elucidate the mechanism. In addition, MC3T3-E1 cells were maintained in an osteogenic medium with or without ZOL to confirm the mechanism. The cell migration, cellular actin content, and osteogenic differentiation were evaluated by a cell activity assay, a cell migration assay, as well as alkaline phosphatase, alizarin red S, and immunofluorescence staining. The mRNA and protein expression of adenosine monophosphate-activated protein kinase (AMPK), phosphorylated AMPK (p-AMPK), osteoprotegerin (OPG), receptor activator of nuclear factor kappa B ligand (RANKL), bone morphogenetic protein 2 (BMP2), and collagen type I (Col-I) were detected using real-time quantitative PCRs and western blot assays, respectively. In the DOP rats, ZOL markedly improved osteogenesis, enhanced bone strength and increased the expression of AMPK, p-AMPK, and Col-I in peri-implant bones. The in vitro findings showed that ZOL reversed the high glucose-induced inhibition of osteogenesis via the AMPK signaling pathway. In conclusion, the ability of ZOL to promote osteogenesis in DOP by targeting AMPK signaling suggests that therapy with ZOL, particularly simultaneous local and systemic administration, may be a unique approach for future implant repair in diabetes patients.
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Affiliation(s)
- Yan Zhang
- School of Stomatology, North China University of Science and Technology, Tangshan, 063210, Hebei, China
| | - Shunyi Jia
- School of Stomatology, North China University of Science and Technology, Tangshan, 063210, Hebei, China
| | - Guochen Wen
- School of Stomatology, North China University of Science and Technology, Tangshan, 063210, Hebei, China
| | - Shanen Xie
- School of Stomatology, North China University of Science and Technology, Tangshan, 063210, Hebei, China
| | - Zhiqiang Song
- Oral and Maxillofacial Surgery, TangShan BoChuang Stomatology Hospital, Tangshan, 063000, Hebei, China
| | - Mengchun Qi
- School of Stomatology, North China University of Science and Technology, Tangshan, 063210, Hebei, China
| | - Yongqiang Liang
- School of Stomatology, North China University of Science and Technology, Tangshan, 063210, Hebei, China
| | - Wenjuan Bi
- School of Stomatology, North China University of Science and Technology, Tangshan, 063210, Hebei, China
| | - Wei Dong
- School of Stomatology, North China University of Science and Technology, Tangshan, 063210, Hebei, China.
- Institute of Stomatology, Chinese PLA General Hospital, Fuxing Lu 28#, Beijing, 100853, China.
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4
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Quarterman JC, Phruttiwanichakun P, Fredericks DC, Salem AK. Zoledronic Acid Implant Coating Results in Local Medullary Bone Growth. Mol Pharm 2022; 19:4654-4664. [PMID: 36378992 PMCID: PMC9727731 DOI: 10.1021/acs.molpharmaceut.2c00644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Osteoarthritis (OA) can necessitate surgical interventions to restore the function of the joint in severe cases. Joint replacement surgery is one of the procedures implemented to replace the damaged joint with prosthetic implants in severe cases of OA. However, after successful implantation, a fraction of OA patients still require revision surgery due to aseptic prosthetic loosening. Insufficient osseointegration is one of the factors that contribute to such loosening of the bone implant, which is commonly made from titanium-based materials. Zoledronic acid (ZA), a potent bisphosphonate agent, has been previously shown to enhance osseointegration of titanium implants. Herein, we fabricated ZA/Ca composites using a reverse microemulsion method and coated them with 1,2-dioleoyl-sn-glycero-3-phosphate monosodium salt (DOPA) to form ZA/Ca/DOPA composites. Titanium alloy screws were subsequently dip-coated with a suspension of the ZA/Ca/DOPA composites and poly(lactic-co-glycolic) acid (PLGA) in chloroform to yield Za/PLGA-coated screws. The coated screws exhibited a biphasic in vitro release profile with an initial burst release within 48 h, followed by a sustained release over 1 month. To assess their performance in vivo, the Za/PLGA screws were then implanted into the tibiae of Sprague-Dawley rats. After 8 weeks, microCT imaging showed new bone growth along the medullary cavity around the implant site, supporting the local release of ZA to enhance bone growth around the implant. Histological staining further confirmed the presence of new mineralized medullary bone growth resembling the cortical bone. Such local medullary growth represents an opportunity for future studies with alternative coating methods to fine-tune the local release of ZA from the coating and enhance complete osseointegration of the implant.
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Affiliation(s)
- Juliana C. Quarterman
- Department
of Pharmaceutical Sciences and Experimental Therapeutics, College
of Pharmacy, University of Iowa, Iowa City, Iowa 52242, United States
| | - Pornpoj Phruttiwanichakun
- Department
of Pharmaceutical Sciences and Experimental Therapeutics, College
of Pharmacy, University of Iowa, Iowa City, Iowa 52242, United States
| | - Douglas C. Fredericks
- The
Bone Healing Research Laboratory, Department of Orthopedics and Rehabilitation,
Carver College of Medicine, University of
Iowa, Iowa City, Iowa 52242, United
States
| | - Aliasger K. Salem
- Department
of Pharmaceutical Sciences and Experimental Therapeutics, College
of Pharmacy, University of Iowa, Iowa City, Iowa 52242, United States,
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5
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Huang XL, Liu C, Shi XM, Cheng YT, Zhou Q, Li JP, Liao J. Zoledronic acid inhibits osteoclastogenesis and bone resorptive function by suppressing RANKL‑mediated NF‑κB and JNK and their downstream signalling pathways. Mol Med Rep 2021; 25:59. [PMID: 34935053 PMCID: PMC8711024 DOI: 10.3892/mmr.2021.12575] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 11/23/2021] [Indexed: 11/06/2022] Open
Abstract
Targeting excessive osteoclast differentiation and activity is considered a valid therapeutic approach for osteoporosis. Zoledronic acid (ZOL) plays a pivotal role in regulating bone mineral density. However, the exact molecular mechanisms responsible for the inhibitory effects of ZOL on receptor activator of nuclear factor (NF)-κB ligand (RANKL)-induced osteoclast formation are not entirely clear. The present study aimed to investigate the role of ZOL in osteoclast differentiation and function, and to determine whether NF-κB and mitogen-activated protein kinase, and their downstream signalling pathways, are involved in this process. RAW264.7 cells were cultured with RANKL for differentiation into osteoclasts, in either the presence or absence of ZOL. Osteoclast formation was observed by tartrate-resistant acid phosphatase staining and bone resorption pit assays using dentine slices. The expression of osteoclast-specific molecules was analysed using reverse transcription-quantitative polymerase chain reaction and western blotting assays to deduce the molecular mechanisms underlying the role of ZOL in osteoclastogenesis. The results showed that ZOL significantly attenuated osteoclastogenesis and bone resorptive capacity in vitro. ZOL also suppressed the activation of NF-κB and the phosphorylation of c-Jun N-terminal kinase. Furthermore, it inhibited the expression of the downstream factors c-Jun, c-Fos and nuclear factor of activated T cells c1, thereby decreasing the expression of dendritic cell-specific transmembrane protein and other osteoclast-specific markers. In conclusion, ZOL may have therapeutic potential for osteoporosis.
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Affiliation(s)
- Xiao-Lin Huang
- Stomatology Medical Center of Zhongshan People's Hospital, Zhongshan, Guangdong 528403, P.R. China
| | - Chao Liu
- Department of Respiratory Disease, Zhongshan People's Hospital, Zhongshan, Guangdong 528403, P.R. China
| | - Xue-Mei Shi
- Stomatology Medical Center of Zhongshan People's Hospital, Zhongshan, Guangdong 528403, P.R. China
| | - Yu-Ting Cheng
- School/Hospital of Stomatology, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Qian Zhou
- School/Hospital of Stomatology, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Jian-Ping Li
- Stomatology Medical Center of Zhongshan People's Hospital, Zhongshan, Guangdong 528403, P.R. China
| | - Jian Liao
- School/Hospital of Stomatology, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
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6
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Ferreira JA, Kantorski KZ, Dubey N, Daghrery A, Fenno JC, Mishina Y, Chan HL, Mendonça G, Bottino MC. Personalized and Defect-Specific Antibiotic-Laden Scaffolds for Periodontal Infection Ablation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:49642-49657. [PMID: 34637255 DOI: 10.1021/acsami.1c11787] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Periodontitis compromises the integrity and function of tooth-supporting structures. Although therapeutic approaches have been offered, predictable regeneration of periodontal tissues remains intangible, particularly in anatomically complex defects. In this work, personalized and defect-specific antibiotic-laden polymeric scaffolds containing metronidazole (MET), tetracycline (TCH), or their combination (MET/TCH) were created via electrospinning. An initial screening of the synthesized fibers comprising chemo-morphological analyses, cytocompatibility assessment, and antimicrobial validation against periodontopathogens was accomplished to determine the cell-friendly and anti-infective nature of the scaffolds. According to the cytocompatibility and antimicrobial data, the 1:3 MET/TCH formulation was used to obtain three-dimensional defect-specific scaffolds to treat periodontally compromised three-wall osseous defects in rats. Inflammatory cell response and new bone formation were assessed by histology. Micro-computerized tomography was performed to assess bone loss in the furcation area at 2 and 6 weeks post implantation. Chemo-morphological and cell compatibility analyses confirmed the synthesis of cytocompatible antibiotic-laden fibers with antimicrobial action. Importantly, the 1:3 MET/TCH defect-specific scaffolds led to increased new bone formation, lower bone loss, and reduced inflammatory response when compared to antibiotic-free scaffolds. Altogether, our results suggest that the fabrication of defect-specific antibiotic-laden scaffolds holds great potential toward the development of personalized (i.e., patient-specific medication) scaffolds to ablate infection while affording regenerative properties.
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Affiliation(s)
- Jessica A Ferreira
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - Karla Z Kantorski
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
- Post-Graduate Program in Oral Sciences (Periodontology Unit), School of Dentistry, Federal University of Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Nileshkumar Dubey
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - Arwa Daghrery
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - J Christopher Fenno
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - Yuji Mishina
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - Hsun-Liang Chan
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - Gustavo Mendonça
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - Marco C Bottino
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
- Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
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7
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Bordini EAF, Ferreira JA, Dubey N, Ribeiro JS, de Souza Costa CA, Soares DG, Bottino MC. Injectable Multifunctional Drug Delivery System for Hard Tissue Regeneration under Inflammatory Microenvironments. ACS APPLIED BIO MATERIALS 2021; 4:6993-7006. [PMID: 35006932 DOI: 10.1021/acsabm.1c00620] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Engineering multifunctional hydrogel systems capable of amplifying the regenerative capacity of endogenous progenitor cells via localized presentation of therapeutics under tissue inflammation is central to the translation of effective strategies for hard tissue regeneration. Here, we loaded dexamethasone (DEX), a pleotropic drug with anti-inflammatory and mineralizing abilities, into aluminosilicate clay nanotubes (halloysite clay nanotubes (HNTs)) to engineer an injectable multifunctional drug delivery system based on photo-cross-linkable gelatin methacryloyl (GelMA) hydrogel. In detail, a series of hydrogels based on GelMA formulations containing distinct amounts of DEX-loaded nanotubes was analyzed for physicochemical and mechanical properties and kinetics of DEX release as well as compatibility with mesenchymal stem cells from human exfoliated deciduous teeth (SHEDs). The anti-inflammatory response and mineralization potential of the engineered hydrogels were determined in vitro and in vivo. DEX conjugation with HNTs was confirmed by FTIR analysis. The incorporation of DEX-loaded nanotubes enhanced the mechanical strength of GelMA with no effect on its degradation and swelling ratio. Scanning electron microscopy (SEM) images demonstrated the porous architecture of GelMA, which was not significantly altered by DEX-loaded nanotubes' (HNTs/DEX) incorporation. All GelMA formulations showed cytocompatibility with SHEDs (p < 0.05) regardless of the presence of HNTs or HNTs/DEX. However, the highest osteogenic cell differentiation was noticed with the addition of HNT/DEX 10% in GelMA formulations (p < 0.01). The controlled release of DEX over 7 days restored the expression of alkaline phosphatase and mineralization (p < 0.0001) in lipopolysaccharide (LPS)-stimulated SHEDs in vitro. Importantly, in vivo data revealed that DEX-loaded nanotube-modified GelMA (5.0% HNT/DEX 10%) led to enhanced bone formation after 6 weeks (p < 0.0001) compared to DEX-free formulations with a minimum localized inflammatory response after 7 days. Altogether, our findings show that the engineered DEX-loaded nanotube-modified hydrogel may possess great potential to trigger in situ mineralized tissue regeneration under inflammatory conditions.
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Affiliation(s)
- Ester A F Bordini
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, 1011 N. University Ave., Ann Arbor, Michigan 48109, United States
| | - Jessica A Ferreira
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, 1011 N. University Ave., Ann Arbor, Michigan 48109, United States
| | - Nileshkumar Dubey
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, 1011 N. University Ave., Ann Arbor, Michigan 48109, United States
| | - Juliana S Ribeiro
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, 1011 N. University Ave., Ann Arbor, Michigan 48109, United States
| | - Carlos A de Souza Costa
- Department of Physiology and Pathology, Araraquara School of Dentistry, Universidade Estadual Paulista (UNESP), 1680 Humaitá Street, Araraquara, Sao Paulo 14801-903, Brazil
| | - Diana G Soares
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, Sao Paulo University (USP), Al. Dr. Octavio Pinheiro Brizola, 9-75, Bauru, Sao Paulo 17012-901, Brazil
| | - Marco C Bottino
- Department of Cariology, Restorative Sciences, and Endodontics, School of Dentistry, University of Michigan, 1011 N. University Ave., Ann Arbor, Michigan 48109, United States.,Department of Biomedical Engineering, College of Engineering, University of Michigan, Carl A. Gerstacker Building, 2200 Bonisteel Blvd., Ann Arbor, Michigan 48109, United States
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8
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Cheng YT, Liao J, Zhou Q, Huo H, Zellmer L, Tang ZL, Ma H, Hong W, Liao DJ. Zoledronic acid modulates osteoclast apoptosis through activation of the NF-κB signaling pathway in ovariectomized rats. Exp Biol Med (Maywood) 2021; 246:1727-1739. [PMID: 33926259 PMCID: PMC8719043 DOI: 10.1177/15353702211011052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 03/24/2021] [Indexed: 01/22/2023] Open
Abstract
Bone mass loss (osteoporosis) seen in postmenopausal women is an adverse factor for implant denture. Using an ovariectomized rat model, we studied the mechanism of estrogen-deficiency-caused bone loss and the therapeutic effect of Zoledronic acid. We observed that ovariectomized-caused resorption of bone tissue in the mandible was evident at four weeks and had not fully recovered by 12 weeks post-ovariectomized compared with the sham-operated controls. Further evaluation with a TUNEL assay showed ovariectomized enhanced apoptosis of osteoblasts but inhibited apoptosis of osteoclasts in the mandible. Zoledronic acid given subcutaneously as a single low dose was shown to counteract both of these ovariectomized effects. Immunohistochemical staining showed that ovariectomized induced the protein levels of RANKL and the 65-kD subunit of the NF-κB complex mainly in osteoclasts, as confirmed by staining for TRAP, a marker for osteoclasts, whereas zoledronic acid inhibited these inductions. Western blotting showed that the levels of RANKL, p65, as well as the phosphorylated form of p65, and IκB-α were all higher in the ovariectomized group than in the sham and ovariectomized + zoledronic acid groups at both the 4th- and 12th-week time points in the mandible. These data collectively suggest that ovariectomized causes bone mass loss by enhancing apoptosis of osteoblasts and inhibiting apoptosis of osteoclasts. In osteoclasts, these cellular effects may be achieved by activating RANKL-NF-κB signalling. Moreover, zoledronic acid elicits its therapeutic effects in the mandible by counteracting these cellular and molecular consequences of ovariectomized.
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Affiliation(s)
- Yu-Ting Cheng
- School/Hospital of Stomatology, Guizhou Medical University, Guizhou 550004, P.R. China
| | - Jian Liao
- School/Hospital of Stomatology, Guizhou Medical University, Guizhou 550004, P.R. China
| | - Qian Zhou
- School/Hospital of Stomatology, Guizhou Medical University, Guizhou 550004, P.R. China
| | - Hua Huo
- School/Hospital of Stomatology, Guizhou Medical University, Guizhou 550004, P.R. China
| | - Lucas Zellmer
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA
| | - Zheng-Long Tang
- School/Hospital of Stomatology, Guizhou Medical University, Guizhou 550004, P.R. China
| | - Hong Ma
- School/Hospital of Stomatology, Guizhou Medical University, Guizhou 550004, P.R. China
| | - Wei Hong
- Key Laboratory of Endemic and Ethnic Diseases, Guizhou Medical University, Ministry of Education, Guizhou 550004, P.R. China
| | - Dezhong Joshua Liao
- Department of Pathology, Guizhou Medical University School of Medicine, Guizhou 550004, P.R. China
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9
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Osteogenesis Differences Around Titanium Implant and in Bone Defect Between Jaw Bones and Long Bones. J Craniofac Surg 2021; 31:2193-2198. [PMID: 33136853 DOI: 10.1097/scs.0000000000006795] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The aim of this study is to evaluate the osteogenesis around titanium implant and in bone defect or fracture in jaw bones and long bones in ovariectomized (OVX) animal models. The literature on the osteogenesis around titanium implant and in bone defect or fracture in jaw bones and long bones was reviewed with charts. Fourty-eight rats were randomly divided into OVX group with ovariectomy and SHAM (sham-surgery) group with sham surgery. Titanium implants were inserted in the right mandibles and tibiae; bone defects were created in the left mandibles and tibiae. Two-week postoperatively, mandibles and tibiae of 8 rats were harvested and examined by hematoxylin and eosin staining and histological analysis; 4-week postoperatively, all mandibles and tibiae were harvested and examined by Micro-CT and histological analysis. A total of 52 articles were included in this literature review. Tibial osteogenesis around titanium implant and in bone defect in OVX group were significantly decreased compared with SHAM group. However, osteogenesis differences in the mandible both around titanium implant and in bone defect between groups were not statistically significant. OVX-induced osteoporosis suppresses osteogenesis around titanium implant and in the bone defect or fracture in long bones significantly while has less effect on that in the jaw bones.
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10
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Effects of Bisphosphonates on Osseointegration of Dental Implants in Rabbit Model. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6689564. [PMID: 33628807 PMCID: PMC7895577 DOI: 10.1155/2021/6689564] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 01/29/2021] [Indexed: 11/18/2022]
Abstract
This study is to investigate the effect of bisphosphonates on the osseointegration of dental implants in a rabbit model. Twenty female New Zealand White rabbits were equally assigned into control and experiment groups which received saline or zoledronic acid treatment 4 weeks prior to surgery. Titanium dental implant was placed on the calvarial bone. Zoledronic acid or saline treatment continued after surgery for 4 weeks (short-term subgroup) or 8 weeks (long-term subgroup) until sacrifice. Three different fluorochrome labeling solutions were administrated for assessing bone growth rates. Samples of the calvarial bone and mandible were subjected to microcomputed tomography (micro-CT), confocal microscope, and histology analysis. Zoledronic acid treatment significantly reduced bone growth rates in the calvarial bone, but had no significant influence in bone mineral density and trabecular microarchitecture. Significantly lower bone-to-implant contact ratios were found in zoledronic acid-treated animals compared to controls at week 4 but not at week 8. Oncologic dose zoledronic acid suppresses the bone growth rates of the calvarial bone; ZA may have an adverse effect on osseointegration of dental implant in short term, but this effect tends to diminish in long term.
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Mahri M, Shen N, Berrizbeitia F, Rodan R, Daer A, Faigan M, Taqi D, Wu KY, Ahmadi M, Ducret M, Emami E, Tamimi F. Osseointegration Pharmacology: A Systematic Mapping Using Artificial Intelligence. Acta Biomater 2021; 119:284-302. [PMID: 33181361 DOI: 10.1016/j.actbio.2020.11.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 11/04/2020] [Accepted: 11/05/2020] [Indexed: 12/25/2022]
Abstract
Clinical performance of osseointegrated implants could be compromised by the medications taken by patients. The effect of a specific medication on osseointegration can be easily investigated using traditional systematic reviews. However, assessment of all known medications requires the use of evidence mapping methods. These methods allow assessment of complex questions, but they are very resource intensive when done manually. The objective of this study was to develop a machine learning algorithm to automatically map the literature assessing the effect of medications on osseointegration. Datasets of articles classified manually were used to train a machine-learning algorithm based on Support Vector Machines. The algorithm was then validated and used to screen 599,604 articles identified with an extremely sensitive search strategy. The algorithm included 281 relevant articles that described the effect of 31 different drugs on osseointegration. This approach achieved an accuracy of 95%, and compared to manual screening, it reduced the workload by 93%. The systematic mapping revealed that the treatment outcomes of osseointegrated medical devices could be influenced by drugs affecting homeostasis, inflammation, cell proliferation and bone remodeling. The effect of all known medications on the performance of osseointegrated medical devices can be assessed using evidence mappings executed with highly accurate machine learning algorithms.
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12
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Siqueira R, Ferreira JA, Rizzante FAP, Moura GF, Mendonça DBS, de Magalhães D, Cimões R, Mendonça G. Hydrophilic titanium surface modulates early stages of osseointegration in osteoporosis. J Periodontal Res 2020; 56:351-362. [PMID: 33368275 DOI: 10.1111/jre.12827] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 10/16/2020] [Accepted: 11/24/2020] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Using a mouse osteoporotic model, this study aimed to determine the influence of hydrophilic titanium surfaces on gene expression and bone formation during the osseointegration process. BACKGROUND Based on the previous evidence, it is plausible to assume that osteoporotic bone has a different potential of bone healing. Therefore, implant surface modification study that aims at enhancing bone formation to further improve short- and long-term clinical outcomes in osteoporosis is necessary. MATERIAL AND METHODS Fifty female, 3-month-old mice were included in this study. Osteoporosis was induced by ovariectomy (OVX, test group) in 25 mice. The further 25 mice had ovaries exposed but not removed (SHAM, control group). Seven weeks following the ovariectomy procedures, one customized implant (0.7 × 8 mm) of each surface was placed in each femur for both groups. Implants had either a hydrophobic surface (SAE) or a hydrophilic treatment surface (SAE-HD). Calcium (Ca) and phosphorus (P) content was measured by energy-dispersive X-ray spectroscopy (EDS) after 7 days. The femurs were analyzed for bone-to-implant contact (BIC) and bone volume fraction (BV) by nano-computed tomography (nano-CT) after 14 and 28 days. Same specimens were further submitted to histological analysis. Additionally, after 3 and 7 days, implants were removed and cells were collected around the implant to access gene expression profile of key osteogenic (Runx2, Alp, Sp7, Bsp, Sost, Ocn) and inflammatory genes (IL-1β, IL-10, Tnf-α, and Nos2) by qRT-PCR assay. Statistical analysis was performed by ANOVA and paired t test with significance at P < .05. RESULTS The amount of Ca and P deposited on the surface due to the mineralization process was higher for SAE-HD compared to SAE on the intra-group analysis. Nano-CT and histology revealed more BV and BIC for SAE-HD in SHAM and OVX groups compared to SAE. Analysis in OVX group showed that most genes (ie, ALP, Runx2) involved in the bone morphogenetic protein (BMP) signaling were significantly activated in the hydrophilic treatment. CONCLUSION Both surfaces were able to modulate bone responses toward osteoblast differentiation. SAE-HD presented a faster response in terms of bone formation and osteogenic gene expression compared to SAE. Hydrophilic surface in situations of osteoporosis seems to provide additional benefits in the early stages of osseointegration.
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Affiliation(s)
- Rafael Siqueira
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Jessica Afonso Ferreira
- Department of Periodontology and Implant Dentistry, School of Dentistry, Federal University of Uberlandia, Uberlândia, Brazil.,Department of Biological and Material Sciences & Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Fábio Antônio Piola Rizzante
- Department of Comprehensive Care, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Guilherme Faria Moura
- Department of Periodontology and Implant Dentistry, School of Dentistry, Federal University of Uberlandia, Uberlândia, Brazil.,Department of Biological and Material Sciences & Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | | | - Denildo de Magalhães
- Department of Periodontology and Implant Dentistry, School of Dentistry, Federal University of Uberlandia, Uberlândia, Brazil
| | - Renata Cimões
- Department of Prosthesis and Maxillofacial Surgery, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Gustavo Mendonça
- Department of Biological and Material Sciences & Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI, USA
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Basudan AM, Shaheen MY, Niazy AA, van den Beucken JJJP, Jansen JA, Alghamdi HS. Histomorphometric Evaluation of Peri-Implant Bone Response to Intravenous Administration of Zoledronate (Zometa ®) in an Osteoporotic Rat Model. MATERIALS (BASEL, SWITZERLAND) 2020; 13:ma13225248. [PMID: 33233722 PMCID: PMC7699926 DOI: 10.3390/ma13225248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/10/2020] [Accepted: 11/18/2020] [Indexed: 06/11/2023]
Abstract
We evaluated the response to peri-implant bone placed in the femoral condyle of osteoporotic rats, following intravenous zoledronate (ZOL) treatment in three settings: pre-implantation (ZOL-Pre), post-implantation (ZOL-Post), and pre- + post-implantation (ZOL-Pre+Post). Twenty-four female Wistar rats were ovariectomized (OVX). After 12 weeks, the rats received titanium implants in the right femoral condyle. ZOL (0.04 mg/kg, weekly) was administered to six rats 4 weeks pre-implantation and was stopped at implant placement. To another six rats, ZOL was given post-implantation and continued for 6 weeks. Additional six rats received ZOL treatment pre- and post-implantation. Control animals received weekly saline intravenous injections. At 6 weeks post-implantation, samples were retrieved for histological evaluation of the percentage of bone area (%BA) and of the percentage of bone-to-implant contact (%BIC). BA% for ZOL-Pre (29.6% ± 9.0%) and ZOL-Post (27.9% ± 5.6%) rats were significantly increased compared to that of the controls (17.3% ± 3.9%, p < 0.05). In contrast, ZOL-Pre+Post rats (20.4% ± 5.0%) showed similar BA% compared to Saline controls (p = 0.731). BIC% revealed a significant increase for ZOL-Post (65.8% ± 16.9%) and ZOL-Pre+Post (68.3% ± 10.0%) rats compared with that of Saline controls (43.3% ± 9.6%, p < 0.05), while ZOL-Pre rats (55.6% ± 19%) showed a BIC% comparable to that of Saline controls (p = 0.408). Our results suggest that receiving intravenous ZOL treatment before or after implant placement enhances peri-implant bone responses in terms of bone area. However, the effect of different ZOL treatment regimens on BIC% was found to be inconclusive.
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Affiliation(s)
- Amani M. Basudan
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia; (A.M.B.); (M.Y.S.)
| | - Marwa Y. Shaheen
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia; (A.M.B.); (M.Y.S.)
| | - Abdurahman A. Niazy
- Department of Oral Medicine and Diagnostic Sciences, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia;
| | | | - John A. Jansen
- Department of Dentistry-Biomaterials, Radboudumc, 6500HB Nijmegen, The Netherlands; (J.J.J.P.v.d.B.); (J.A.J.)
| | - Hamdan S. Alghamdi
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh 11451, Saudi Arabia; (A.M.B.); (M.Y.S.)
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Harrison KD, Hiebert BD, Panahifar A, Andronowski JM, Ashique AM, King GA, Arnason T, Swekla KJ, Pivonka P, Cooper DM. Cortical Bone Porosity in Rabbit Models of Osteoporosis. J Bone Miner Res 2020; 35:2211-2228. [PMID: 32614975 PMCID: PMC7702175 DOI: 10.1002/jbmr.4124] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 06/17/2020] [Accepted: 06/21/2020] [Indexed: 12/20/2022]
Abstract
Cortical bone porosity is intimately linked with remodeling, is of growing clinical interest, and is increasingly accessible by imaging. Thus, the potential of animal models of osteoporosis (OP) to provide a platform for studying how porosity develops and responds to interventions is tremendous. To date, rabbit models of OP have largely focused on trabecular microarchitecture or bone density; some such as ovariectomy (OVX) have uncertain efficacy and cortical porosity has not been extensively reported. Our primary objective was to characterize tibial cortical porosity in rabbit-based models of OP, including OVX, glucocorticoids (GC), and OVX + GC relative to controls (SHAM). We sought to: (i) test the hypothesis that intracortical remodeling is elevated in these models; (ii) contrast cortical remodeling and porosity in these models with that induced by parathyroid hormone (1-34; PTH); and (iii) contrast trabecular morphology in the proximal tibia across all groups. Evidence that an increase in cortical porosity occurred in all groups was observed, although this was the least robust for GC. Histomorphometric measures supported the hypothesis that remodeling rate was elevated in all groups and also revealed evidence of uncoupling of bone resorption and formation in the GC and OVX + GC groups. For trabecular bone, a pattern of loss was observed for OVX, GC, and OVX + GC groups, whereas the opposite was observed for PTH. Change in trabecular number best explained these patterns. Taken together, the findings indicated rabbit models provide a viable and varied platform for the study of OP and associated changes in cortical remodeling and porosity. Intriguingly, the evidence revealed differing effects on the cortical and trabecular envelopes for the PTH model. © 2020 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR)..
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Affiliation(s)
- Kim D Harrison
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Beverly D Hiebert
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Arash Panahifar
- BioMedical Imaging and Therapy Beamline, Canadian Light Source, Saskatoon, Canada.,Department of Medical Imaging, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | | | | | - Gavin A King
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Terra Arnason
- Department of Medicine, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Kurtis J Swekla
- Research Services and Ethics Office, Office of the Vice President of Research, University of Saskatchewan, Saskatoon, Canada
| | - Peter Pivonka
- School of Mechanical, Medical, and Process Engineering, Queensland University of Technology, Brisbane, Australia
| | - David Ml Cooper
- Department of Anatomy, Physiology, and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Canada
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15
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Oryan A, Sahvieh S. Effects of bisphosphonates on osteoporosis: Focus on zoledronate. Life Sci 2020; 264:118681. [PMID: 33129881 DOI: 10.1016/j.lfs.2020.118681] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/19/2020] [Accepted: 10/24/2020] [Indexed: 12/11/2022]
Abstract
Osteoporosis is a bone disease that mainly affects older people and postmenopausal women. Lack of proper treatment for this disease gives rise to many problems in patients and occasionally leads to death. Many drugs have been utilized to treat osteoporosis but the most effective one is the bisphosphonates (BPs) family. This family has several positive effects on bone tissue, including promoting bone healing, enhancing bone mineral density, reducing bone resorption, preventing pathologic fractures, suppressing bone turnover, and modulating bone remodeling. On the other hand, there have also been inconclusive reports that BPs might have a desirable or even adverse impact on osteoporotic patients. Therefore, we set out to examine the positive and negative effects of this family, with a focus on the most potent one that is zoledronate (Zol), in clinical usage. Zoledronate is an amino-BPs and nitrogen-containing drug which is the most powerful BPs on osteoporosis treatment or prevention. Many studies showed its effectiveness in the treatment of osteoporosis and bone healing. As Zol enjoys a considerable potential in treating and preventing osteoporosis, it can be used as one of the effective treatments in this field.
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Affiliation(s)
- Ahmad Oryan
- Department of Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran.
| | - Sonia Sahvieh
- Department of Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
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16
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Karakaya M, Demirbaş AE. Effect of low-level laser therapy on osseointegration of titanium dental implants in ovariectomized rabbits: biomechanics and micro-CT analysis. Int J Implant Dent 2020; 6:61. [PMID: 33043397 PMCID: PMC7548265 DOI: 10.1186/s40729-020-00257-z] [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: 01/27/2020] [Accepted: 08/31/2020] [Indexed: 11/10/2022] Open
Abstract
PURPOSE The primary aim of this study is to assess, in an animal model, whether biostimulation of osteoporotic bone with low-level laser therapy improves the osseointegration of dental implants. MATERIAL AND METHODS Twenty-two female rabbits were randomly divided into two groups: sham-ovariectomy and bilateral-ovariectomy. Laser therapy was applied to the implants placed in the right tibial bones and was not applied to implants placed in the left tibial bones. The periotest device was used for the stability test. Periotest values were recorded after the implantation (T0) and when the animals were euthanized (T1). The removal torque test and micro-computed tomography examination were evaluated. RESULTS As a result of removal torque, the mean of ovariectomy-laser group (56.1 ± 5.1 Ncm) was higher than sham-ovariectomy group (55.4 ± 18.5 Ncm) (p = 0.9). In periotest analysis, a significant difference was found between the values of T1 and T0 in all groups, except sham-ovariectomy group (p < 0.05); and the highest difference was found in the ovariectomy-laser group. Micro-CT examination demonstrated that ovariectomy-laser group showed an increase of implant-bone contact when compared with ovariectomy (p < 0.05). CONCLUSIONS The values obtained from biomechanical tests and micro-CT in the ovariectomy-laser group were significantly higher than the ovariectomy group and achieved the values in the healthy bone.
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Affiliation(s)
- Mustafa Karakaya
- Sancaktepe Oral and Dental Health Hospital, Department of Oral and Maxillofacial Surgery, Ministry of Health, İstanbul, Turkey.
| | - Ahmet Emin Demirbaş
- Department of Oral and Maxillofacial Surgery, Erciyes University Faculty of Dentistry, Melikgazi, Kayseri, Turkey
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17
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Ten Years of Micro-CT in Dentistry and Maxillofacial Surgery: A Literature Overview. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10124328] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Micro-computed tomography (micro-CT) is a consolidated imaging technology allowing non-destructive three-dimensional (3D) qualitative and quantitative analysis by the observation of microstructures with high resolution. This paper aims at delivering a structured overview of literature about studies performed using micro-CT in dentistry and maxillofacial surgery (MFS) by analyzing the entire set of articles to portray the state of the art of the last ten years of scientific publications on the topic. It draws the scenario focusing on biomaterials, in vitro and in/ex vivo applications, bone structure analysis, and tissue engineering. It confirms the relevance of the micro-CT analysis for traditional research applications and mainly in dentistry with respect to MFS. Possible developments are discussed in relation to the use of the micro-CT combined with other, traditional, and not, techniques and technologies, as the elaboration of 3D models based on micro-CT images and emerging numerical methods. Micro-CT results contribute effectively with whose ones obtained from other techniques in an integrated multimethod approach and for multidisciplinary studies, opening new possibilities and potential opportunities for the next decades of developments.
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Ko WK, Kim SJ, Heo DN, Han IB, Kim S, Kwon IK, Sohn S. Double layers of gold nanoparticles immobilized titanium implants improve the osseointegration in rabbit models. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 24:102129. [PMID: 31760162 DOI: 10.1016/j.nano.2019.102129] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 11/13/2019] [Accepted: 11/13/2019] [Indexed: 10/25/2022]
Abstract
Osseointegration is important in osteopenia and osteoporosis patients due to their low bone densities. Gold nanoparticles (GNPs) are greatly beneficial materials as osteogenic agents. The aim of this study is to investigate osseointegration between bones and double layers of GNP-immobilized titanium (Ti) implants. The physicochemical properties of the Ti surface were evaluated by scanning electron microscopy, by atomic force microscopy, by means of the contact angle using water drops, and by x-ray photoelectron spectroscopy. Osteogenic differentiation of human bone-marrow-derived mesenchymal stem cells was analyzed and showed the higher values in double layers of GNP (GNP2) groups. In addition, we performed an in vivo study using hydroxyapatite (HA) and GNP2 spine pedicle screws in ovariectomized (OVX) and SHAM rabbits. Osseointegration parameters also showed higher values in GNP2 than in HA groups. These findings suggest that implants with double layers of GNPs can be a useful alternative in osteoporotic patients.
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Affiliation(s)
- Wan-Kyu Ko
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea; Department of Biomedical Science, CHA University, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Seong Jun Kim
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea; Department of Biomedical Science, CHA University, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Dong Nyoung Heo
- Department of Dental Materials, School of Dentistry, Kyung Hee University, Dongdaemun-gu, Seoul, Republic of Korea
| | - In-Bo Han
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Sewha Kim
- Department of Pathology, CHA Bundang Medical Center, CHA University, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Il Keun Kwon
- Department of Dental Materials, School of Dentistry, Kyung Hee University, Dongdaemun-gu, Seoul, Republic of Korea
| | - Seil Sohn
- Department of Neurosurgery, CHA Bundang Medical Center, CHA University, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea.
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Effects of Systemic or Local Administration of Zoledronate on Implant Osseointegration: A Preclinical Meta-Analysis. BIOMED RESEARCH INTERNATIONAL 2019; 2019:9541485. [PMID: 31663000 PMCID: PMC6778941 DOI: 10.1155/2019/9541485] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 08/10/2019] [Accepted: 08/29/2019] [Indexed: 11/18/2022]
Abstract
Objective This study aims to investigate the effect of systemically administrated zoledronate on bone-implant fixation in animal models. Methods We searched MEDLINE, Embase, and EBSCO for studies that explore the role of systemic or local zoledronate delivery in implant osseointegration in animal models. The Review Manager software was used to analyze selected studies by using the weighted mean difference random-effects model. Analytical data are mainly about bone ingrowth, such as bone-to-implant contact (BIC), bone volume/total volume (BV/TV), and bone area. Results Twenty studies were selected from 182 publications. The mean quality score was 18/20 for all of the 20 studies (κ = 0.9). Despite differences in protocols, these studies showed consistent improvement of implant osseointegration with zoledronate administration. In addition, the osteoporotic animal model, systemic or local administration, sufficient drug dosage, and sample follow-up time were correlated with improved outcomes. Conclusion Systematic administration of zoledronate could improve the osseointegration of orthopedic implant in animal models. Results of this meta-analysis should be interpreted cautiously because of the inherent differences between preclinical and clinical subjects. For the local administration, there is a similar trend as well, but the results need to be confirmed and complemented with further analyses.
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Permuy M, López-Peña M, Muñoz F, González-Cantalapiedra A. Rabbit as model for osteoporosis research. J Bone Miner Metab 2019; 37:573-583. [PMID: 31087186 DOI: 10.1007/s00774-019-01007-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 04/20/2019] [Indexed: 10/26/2022]
Abstract
Osteoporosis is a major public health problem affecting more than 200 million people worldwide. The use of different animal models, for the study of its pathophysiology and treatments, is important being actually the ovariectomized rat the most widely used; although this model has several problems due its small size, lack of true closure of epiphyseal plate and bone differences with humans. This review is aimed at summarizing the most common methods published for osteoporosis induction in rabbits as model for human disease with their advantages and disadvantages. The paper shows the advantages of the use of this specie compared with the rat. All the techniques seemed to achieve the osteoporotic condition, but the one which obtained the most consistent bone mineral reduction in less time was the combination of surgery and corticoid treatment. The conclusion of the review was that rabbits are promising as a model of osteoporosis research because of their size, haversian remodelling and closure of epiphyseal plate, which solve some of the problems of the rat model. There are different techniques in the literature used to achieve the osteoporotic condition with diverse results, but there is a lack of consensus as to the best one.
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Affiliation(s)
- María Permuy
- Departamento de Anatomía, Producción Animal e Ciencias Clínicas Veterinarias, Universidade De Santiago de Compostela, Campus Universitario s/n, 27002, Lugo, Spain.
| | - Mónica López-Peña
- Departamento de Anatomía, Producción Animal e Ciencias Clínicas Veterinarias, Universidade De Santiago de Compostela, Campus Universitario s/n, 27002, Lugo, Spain
| | - Fernando Muñoz
- Departamento de Anatomía, Producción Animal e Ciencias Clínicas Veterinarias, Universidade De Santiago de Compostela, Campus Universitario s/n, 27002, Lugo, Spain
| | - Antonio González-Cantalapiedra
- Departamento de Anatomía, Producción Animal e Ciencias Clínicas Veterinarias, Universidade De Santiago de Compostela, Campus Universitario s/n, 27002, Lugo, Spain
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Pócs L, Janovszky Á, Ocsovszki I, Kaszaki J, Piffkó J, Szabó A. Microcirculatory consequences of limb ischemia/reperfusion in ovariectomized rats treated with zoledronic acid. J Orthop Surg Res 2019; 14:95. [PMID: 30947735 PMCID: PMC6450009 DOI: 10.1186/s13018-019-1117-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 03/06/2019] [Indexed: 12/12/2022] Open
Abstract
Background Nitrogen-containing bisphosphonates (BIS) are potent therapeutics in osteoporosis, but their use may result in osteonecrotic side-effects in the maxillofacial region. Periosteal microcirculatory reactions may contribute to the development of bone-healing complications, particularly in osteoporotic bones, where ischemia–reperfusion (IR) events often develop during orthopaedic/trauma interventions. The effect of BIS on the inflammatory reactions of appendicular long bones has not yet been evaluated; thus, we aimed to examine the influence of chronic zoledronate (ZOL) administration on the periosteal microcirculatory consequences of hindlimb IR in osteopenic rats. Materials and methods Twelve-week-old female Sprague–Dawley rats were ovariectomized (OVX) or sham-operated, and ZOL (80 μg/kg iv, weekly) or a vehicle was administered for 8 weeks, 4 weeks after the operation. At the end of the pre-treatment protocols, 60-min limb ischemia was induced, followed by 180-min reperfusion. Leukocyte-endothelial interactions were quantitated in tibial periosteal postcapillary venules by intravital fluorescence videomicroscopy. CD11b expression of circulating polymorphonuclear leukocytes (PMN, flow cytometry) and plasma TNF-alpha levels (ELISA) were also determined. Two-way RM ANOVA followed by the Holm–Sidak and Dunn tests was used to assess differences within and between groups, respectively. Results Limb IR induced significant increases in PMN rolling and firm adhesion in sham-operated and OVX rats, which were exacerbated temporarily in the first 60 min of reperfusion by a ZOL treatment regimen. Postischemic TNF-alpha values showed a similar level of postischemic elevations in all groups, whereas CD11b expression only increased in rats not treated with ZOL. Conclusions The present data do not show substantial postischemic periosteal microcirculatory complications after chronic ZOL treatment either in sham-operated or OVX rats. The unaltered extent of limb IR-induced local periosteal microcirculatory reactions in the presence of reduced CD11b adhesion molecule expression on circulating PMNs, however, may be attributable to local endothelial injury/activation caused by ZOL.
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Affiliation(s)
- Levente Pócs
- Department of Traumatology and Hand Surgery, Bács-Kiskun County Teaching Hospital, Nyíri u. 38, Kecskemét, H-6000, Hungary
| | - Ágnes Janovszky
- Department of Oral and Maxillofacial Surgery, University of Szeged, Kálvária sgt. 57, Szeged, H-6725, Hungary
| | - Imre Ocsovszki
- Department of Biochemistry, University of Szeged, Dóm tér 9, Szeged, H-6720, Hungary
| | - József Kaszaki
- Department of Oral and Maxillofacial Surgery, University of Szeged, Kálvária sgt. 57, Szeged, H-6725, Hungary
| | - József Piffkó
- Department of Oral and Maxillofacial Surgery, University of Szeged, Kálvária sgt. 57, Szeged, H-6725, Hungary
| | - Andrea Szabó
- Institute of Surgical Research, University of Szeged, Pulz u. 1, Szeged, H-6724, Hungary.
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Zhao W, He B, Zhou A, Li Y, Chen X, Yang Q, Chen B, Qiao B, Jiang D. D-RADA16-RGD-Reinforced Nano-Hydroxyapatite/Polyamide 66 Ternary Biomaterial for Bone Formation. Tissue Eng Regen Med 2019; 16:177-189. [PMID: 30989044 DOI: 10.1007/s13770-018-0171-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 11/11/2018] [Accepted: 11/23/2018] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Nano-hydroxyapatite/polyamide 66 (nHA/PA66) is a composite used widely in the repair of bone defects. However, this material is insufficient bioactivity. In contrast, D-RADA16-RGD self-assembling peptide (D-RADA16-RGD sequence containing all D-amino acids is Ac-RADARADARADARADARGDS-CONH2) shows admirable bioactivity for both cell culture and bone regeneration. Here, we describe the fabrication of a favorable biomaterial material (nHA/PA66/D-RADA16-RGD). METHODS Proteinase K and circular dichroism spectroscopy were employed to test the stability and secondary structural properties of peptide D-RADA16-RGD respectively. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to characterize the surface of these materials. Confocal laser scanning (CLS), cell counting kit-8 tests (CCK-8), alizarin red S staining, cell immunofluorescence analysis and Western blotting were involved in vitro. Also biosafety and bioactivity of them have been evaluated in vivo. RESULTS Proteinase K and circular dichroism spectroscopy demonstrated that D-RADA16-RGD in nHA/PA66 was able to form stable-sheet secondary structure. SEM and TEM showed that the D-RADA16-RGD material was 7-33 nm in width and 130-600 nm in length, and the interwoven pore size ranged from 40 to 200 nm. CLS suggests that cells in nHA/PA66/D-RADA16-RGD group were linked to adjacent cells with more actin filaments. CCK-8 analysis showed that nHA/PA66/D-RADA16-RGD revealed good biocompatibility. The results of Alizarin-red S staining and Western blotting as well as vivo osteogenesis suggest nHA/PA66/D-RADA16-RGD exhibits better bioactivity. CONCLUSION This study demonstrates that our nHA/PA66/D-RADA16-RGD composite exhibits reasonable mechanical properties, biocompatibility and bioactivity with promotion of bone formation.
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Affiliation(s)
- WeiKang Zhao
- 1The First Affiliated Hospital of Chongqing Medical University, No 1 Medicine Road, Yuzhong District, Chongqing, 400016 People's Republic of China.,2The Third Affiliated Hospital of Chongqing Medical University, No 1 Shuanghu Road, Yubei District, Chongqing, 401120 People's Republic of China
| | - Bin He
- 1The First Affiliated Hospital of Chongqing Medical University, No 1 Medicine Road, Yuzhong District, Chongqing, 400016 People's Republic of China
| | - Ao Zhou
- 2The Third Affiliated Hospital of Chongqing Medical University, No 1 Shuanghu Road, Yubei District, Chongqing, 401120 People's Republic of China
| | - Yuling Li
- Affiliated Hospital of Northern, Sichuan Medical University, Cultural Road 63, Nanchong City, 637000 Sichuan Province People's Republic of China
| | - Xiaojun Chen
- 2The Third Affiliated Hospital of Chongqing Medical University, No 1 Shuanghu Road, Yubei District, Chongqing, 401120 People's Republic of China
| | - Qiming Yang
- 2The Third Affiliated Hospital of Chongqing Medical University, No 1 Shuanghu Road, Yubei District, Chongqing, 401120 People's Republic of China
| | - Beike Chen
- 1The First Affiliated Hospital of Chongqing Medical University, No 1 Medicine Road, Yuzhong District, Chongqing, 400016 People's Republic of China.,2The Third Affiliated Hospital of Chongqing Medical University, No 1 Shuanghu Road, Yubei District, Chongqing, 401120 People's Republic of China
| | - Bo Qiao
- 1The First Affiliated Hospital of Chongqing Medical University, No 1 Medicine Road, Yuzhong District, Chongqing, 400016 People's Republic of China
| | - Dianming Jiang
- 1The First Affiliated Hospital of Chongqing Medical University, No 1 Medicine Road, Yuzhong District, Chongqing, 400016 People's Republic of China.,2The Third Affiliated Hospital of Chongqing Medical University, No 1 Shuanghu Road, Yubei District, Chongqing, 401120 People's Republic of China
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23
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Huang D, Wu Q, Zhou X, Kang F. Activity and morphologic changes in the mandible after mandibular osteotomy. Am J Orthod Dentofacial Orthop 2019; 155:40-47. [PMID: 30591164 DOI: 10.1016/j.ajodo.2018.02.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 02/01/2018] [Accepted: 02/01/2018] [Indexed: 11/17/2022]
Abstract
INTRODUCTION Orthognathic surgery accelerates orthodontic tooth movement, and tooth movement accelerates with demineralized bone and accelerated bone remodeling. The purpose of this study was to ascertain whether orthognathic surgery induces accelerated bone remodeling. The research design included a human model and an animal model. METHODS The levels of serum tartrate resistant acid phosphatase-5b (TRAP) and bone alkaline phosphatase (BALP) were measured in 15 patients after sagittal split ramus osteotomy. For the animal study, 18 rabbits were divided into 6 groups: a control group and 5 surgery groups. The rabbits in the surgery groups had osteotomies in the molar regions of the mandible. Changes in bone mass of the anterior mandibles were examined by microcomputed tomography, and changes in osteoblast and osteoclast numbers were analyzed by real-time polymerase chain reaction, hematoxylin and eosin staining, TRAP staining, and alkaline phosphatase staining. RESULTS In the 15 patients, TRAP-5b increased from 1 to 8 weeks postoperatively, and BALP increased significantly in 2 weeks postoperatively. In the rabbits, the levels of mRNA expression of TRAP were increased at 3 weeks, and matrix metalloproteinase 9 was increased at 4 and 8 weeks, whereas mRNA expression of BALP and bone morphogenetic protein 2 were increased at 4 weeks. Bone loss was detected from 1 week postoperatively and reached the maximum at 3 weeks; and bone mass and mechanical structure did not recoverer to preoperative levels until 8 weeks postoperatively. CONCLUSIONS These findings show active bone remodeling induced by osteotomy.
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Affiliation(s)
- Danqing Huang
- Department of Oral and Maxillofacial Surgery, School & Hospital of Stomatology, Tongji University, Shanghai, China; Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Qing Wu
- Department of Oral and Maxillofacial Surgery, School & Hospital of Stomatology, Tongji University, Shanghai, China; Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Xiaokang Zhou
- Department of Oral and Maxillofacial Surgery, School & Hospital of Stomatology, Tongji University, Shanghai, China; Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Feiwu Kang
- Department of Oral and Maxillofacial Surgery, School & Hospital of Stomatology, Tongji University, Shanghai, China; Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China.
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24
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Dereka X, Calciolari E, Donos N, Mardas N. Osseointegration in osteoporotic-like condition: A systematic review of preclinical studies. J Periodontal Res 2018; 53:933-940. [PMID: 29845622 DOI: 10.1111/jre.12566] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2018] [Indexed: 12/11/2022]
Abstract
Osteoporosis is one of the most common skeletal disorders affecting a significant percentage of people worldwide. Research data suggested that systemic diseases such as osteoporosis could act as risk factors for osseointegration, jeopardizing the healing process and thus the predictability of dental implant success on compromised patients. It is well accepted that preclinical studies in animal models reproducing the osteoporotic condition are one of the most important stages in the research of new biomaterials and therapeutic modalities. The aim of this systematic review was to investigate whether osteoporosis compromises dental implant osseointegration in experimental osteoporotic-like conditions. A 3-stage systematic literature research was conducted in MEDLINE via OVID and EMBASE up to and including March 2017. Experimental studies reporting on dental implant osseointegration on different osteoporotic animal models were assessed. The studies had to report on the percentage of bone-to-implant contact (%BIC) as the primary outcome. ARRIVE guidelines for reporting on animal research were applied to evaluate the methodological quality and risk of bias of the studies. Fifty-seven studies met the inclusion criteria and were assessed qualitatively. The most adopted animal model was the rat. A variability of %BIC values was observed, ranging from 30% to 99% and from 26% to 94% for the healthy and osteoporotic group, respectively. The great majority (47) of the included studies concluded that estrogen deficiency significantly affects BIC values, 9 studies stated that it was not possible to observe statistical differences in BIC between ovariectomized and healthy groups and 1 study did not provide a comparison between the healthy and osteoporotic group. Owing to the great heterogeneity in implant surface, study design, observation time-points, site of implant placement and reported outcomes, a meta-analysis could not be performed. An overall high risk of bias was observed, owing to the limited information on animal housing and husbandry, baseline characteristics and health status, ethical statement and allocation to the experimental groups provided. Although the available studies seem to suggest a lower osseointegration in osteoporotic-like conditions, no robust conclusions can be drawn due to the great heterogeneity and overall low quality of the available studies. Future studies with emphasis on minimizing the possible sources of bias and evaluating osseointegration of dental implants placed into jawbones instead of long bones are warranted.
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Affiliation(s)
- X Dereka
- Department of Periodontology, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
- Centre for Oral Immunobiology & Regenerative Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
- Centre for Clinical Oral Research, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
| | - E Calciolari
- Centre for Oral Immunobiology & Regenerative Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
- Centre for Clinical Oral Research, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
| | - N Donos
- Centre for Oral Immunobiology & Regenerative Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
- Centre for Clinical Oral Research, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
| | - N Mardas
- Centre for Oral Immunobiology & Regenerative Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
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25
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Qayoom I, Raina DB, Širka A, Tarasevičius Š, Tägil M, Kumar A, Lidgren L. Anabolic and antiresorptive actions of locally delivered bisphosphonates for bone repair: A review. Bone Joint Res 2018; 7:548-560. [PMID: 30464835 PMCID: PMC6215244 DOI: 10.1302/2046-3758.710.bjr-2018-0015.r2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
During the last decades, several research groups have used bisphosphonates for local application to counteract secondary bone resorption after bone grafting, to improve implant fixation or to control bone resorption caused by bone morphogenetic proteins (BMPs). We focused on zoledronate (a bisphosphonate) due to its greater antiresorptive potential over other bisphosphonates. Recently, it has become obvious that the carrier is of importance to modulate the concentration and elution profile of the zoledronic acid locally. Incorporating one fifth of the recommended systemic dose of zoledronate with different apatite matrices and types of bone defects has been shown to enhance bone regeneration significantly in vivo. We expect the local delivery of zoledronate to overcome the limitations and side effects associated with systemic usage; however, we need to know more about the bioavailability and the biological effects. The local use of BMP-2 and zoledronate as a combination has a proven additional effect on bone regeneration. This review focuses primarily on the local use of zoledronate alone, or in combination with bone anabolic factors, in various preclinical models mimicking different orthopaedic conditions. Cite this article: I. Qayoom, D. B. Raina, A. Širka, Š. Tarasevičius, M. Tägil, A. Kumar, L. Lidgren. Anabolic and antiresorptive actions of locally delivered bisphosphonates for bone repair: A review. Bone Joint Res 2018;7:548–560. DOI: 10.1302/2046-3758.710.BJR-2018-0015.R2.
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Affiliation(s)
- I Qayoom
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology, Kanpur, India
| | - D B Raina
- Department of Orthopedics, The Medical Faculty, Clinical Sciences Lund, Lund University, Lund, Sweden
| | - A Širka
- Department of Orthopedics and Traumatology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Š Tarasevičius
- Department of Orthopedics and Traumatology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - M Tägil
- Department of Orthopedics, The Medical Faculty, Clinical Sciences Lund, Lund University, Lund, Sweden
| | - A Kumar
- Department of Biological Sciences and Bioengineering; Centre for Environmental Sciences and Engineering; Centre for Nanosciences, Indian Institute of Technology Kanpur, Kanpur, India
| | - L Lidgren
- Department of Orthopedics, The Medical Faculty, Clinical Sciences Lund, Lund University, Lund, Sweden
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Jin ES, Kim JY, Lee B, Min J, Jeon SR, Choi KH, Jeong JH. Biodegradable Screws Containing Bone Morphogenetic Protein-2 in an Osteoporotic Rat Model. J Korean Neurosurg Soc 2018; 61:559-567. [PMID: 30041512 PMCID: PMC6129746 DOI: 10.3340/jkns.2017.0297] [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: 11/30/2017] [Accepted: 02/09/2018] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE The aim of this study was to evaluate the effect for biodegradable screws containing bone morphogenetic protein-2 (BMP-2) in an osteoporotic rat model. METHODS Twenty-four female Wistar rat (250-300 g, 12 weeks of age) were randomized into four groups. Three groups underwent bilateral ovariectomy (OVX). Biodegradable screws with or without BMP-2 were inserted in the proximal tibia in two implantation groups. The extracted proximal metaphysis of the tibiae were scanned by exo-vivo micro-computed tomography. Evaluated parameters included bone mineral density (BMD), trabecular bone volume (BV/TV), trabecular number, trabecular thickness, and trabecular separation (Tb.Sp). The tibia samples were pathologically evaluated by staining with by Hematoxylin and Eosin, and trichrome. RESULTS Trabecular formation near screw insertion site was evident only in rats receiving BMP-2 screws. BMD and BV/TV significantly differed between controls and the OVX and OVX with screw groups. However, there were no significant differences between control and OVX with screw BMP groups. Tb.Sp significantly differed between control and OVX and OVX with screw groups (p<0.05), and between the OVX and OVX with screw BMP group (p<0.05), with no statistically significant difference between control and OVX with screw BMP groups. Over the 12 weeks after surgery, bone lamellae in direct contact with the screw developed more extensive and thicker trabecular bone around the implant in the OVX with screw BMP group compared to the OVX with screw group. CONCLUSION Biodegradable screws containing BMP-2 improve nearby bone conditions and enhance ostoeintegration between the implant and the osteoporotic bone.
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Affiliation(s)
- Eun-Sun Jin
- Department of Internal Medicine, Kyung Hee University School of Medicine, Seoul, Korea.,Laboratory of Stem Cell Therapy, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Ji Yeon Kim
- Laboratory of Stem Cell Therapy, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Bora Lee
- Department of Biostatistic Consulting, Soon Chun Hyang Medical Center, Bucheon, Korea
| | - JoongKee Min
- Laboratory of Stem Cell Therapy, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sang Ryong Jeon
- Laboratory of Stem Cell Therapy, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Department of Neurological Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Kyoung Hyo Choi
- Laboratory of Stem Cell Therapy, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Je Hoon Jeong
- Laboratory of Stem Cell Therapy, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.,Department of Neurosurgery, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
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Jiang L, Zhang W, Wei L, Zhou Q, Yang G, Qian N, Tang Y, Gao Y, Jiang X. Early effects of parathyroid hormone on vascularized bone regeneration and implant osseointegration in aged rats. Biomaterials 2018; 179:15-28. [PMID: 29960821 DOI: 10.1016/j.biomaterials.2018.06.035] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 06/19/2018] [Accepted: 06/22/2018] [Indexed: 01/02/2023]
Abstract
The decreased bone mass and impaired osteogenesis capacities that occur with aging may influence the outcome of dental implants. Parathyroid hormone (PTH) (1-34) is an anabolic agent for the treatment of osteoporosis. However, little is known about its effects and mechanisms on vascularized bone regeneration and implant osseointegration in aging. In current study, we adopted both in vivo and in vitro approaches to explore the mechanisms of early actions of PTH (1-34) on the angiogenic and osteogenic microenvironment to enhance implant osseointegration in aged rats. Daily subcutaneous injections of 30 μg/kg PTH (1-34) were given to female rats aged 20 months beginning on next day of implantation and lasting for 5 weeks. Radiological and histological analysis confirmed that PTH (1-34) improved new bone formation, angiogenesis and implant osseointegration in aged rats in the early stage. The osteogenic potential of aged bone mesenchymal stem cells (BMSCs) was enhanced, while their adipogenesis capacity was attenuated. Furthermore, PTH (1-34) was shown to promote angiogenesis directly via endothelial cell migration and blood vessel formation in vitro. Meanwhile, PTH (1-34) stimulated more osteoclasts participation in bone remodeling by secreting angiogenic and osteogenic growth factors to induce early vascularization and stimulate the migration or differentiation of BMSCs indirectly. Together, these results demonstrate mechanistic insight into how PTH (1-34) regulates the angiogenic and osteogenic microenvironment to result in more active bone remodeling and new bone formation, making it an excellent potential therapeutic agent for rapid vascularized bone regeneration and implant osseointegration in the aged population.
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Affiliation(s)
- Liting Jiang
- Department of Prosthodontics, Ninth People's Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology, 200011 Shanghai, China; Department of Stomatology, Ruijin Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, 200025 Shanghai, China
| | - Wenjie Zhang
- Department of Prosthodontics, Ninth People's Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology, 200011 Shanghai, China
| | - Li Wei
- Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, 200025 Shanghai, China
| | - Qi Zhou
- Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, 200025 Shanghai, China
| | - Guangzheng Yang
- Department of Prosthodontics, Ninth People's Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology, 200011 Shanghai, China
| | - Niandong Qian
- Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, 200025 Shanghai, China
| | - Yun Tang
- Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, 200025 Shanghai, China
| | - Yiming Gao
- Department of Stomatology, Ruijin Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, 200025 Shanghai, China.
| | - Xinquan Jiang
- Department of Prosthodontics, Ninth People's Hospital affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai Key Laboratory of Stomatology, 200011 Shanghai, China.
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Role of Osteogenic Coatings on Implant Surfaces in Promoting Bone-To-Implant Contact in Experimental Osteoporosis: A Systematic Review and Meta-Analysis. IMPLANT DENT 2018; 26:770-777. [PMID: 28767464 DOI: 10.1097/id.0000000000000634] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVE The aim of this systematic review and meta-analysis was to evaluate the role of osteogenic coatings (placement of a thin film of organic and inorganic osteoinductive and osteoproliferative materials) on implant surfaces in augmenting bone-to-implant contact (BIC) in osteoporotic bone. DATA SOURCES To answer the focused question "Do osteogenic coatings on implant surfaces increase BIC in osteoporotic bone?" PubMed/MEDLINE, EMBASE, ISI Web of Knowledge, Scopus, and Google-Scholar databases were searched till June 2017 using different combinations of the following key words: bone-to-implant contact, coating, implant surface, osseointegration, and osteoporosis. Letters to the Editor, review articles, case-reports/case-series, and commentaries were excluded. RESULTS Six animal studies were included, in which osteoporosis was induced by bilateral ovariectomy. In all studies, implant surface roughness was increased by various osteogenic surface coatings including alumina, hydroxyapatite, calcium phosphate, and zoledronic acid. Five studies showed that bone volume and BIC are significantly higher around implants with coated surfaces than noncoated implants. In 1 study, there was no difference in BIC around coated and noncoated implants. CONCLUSION Although experimental studies have shown that osteogenic coatings are effective in enhancing BIC, their clinical relevance requires further investigations.
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Gupta A, Govila V, Pant VA, Gupta R, Verma UP, Ahmad H, Mohan S. A randomized controlled clinical trial evaluating the efficacy of zoledronate gel as a local drug delivery system in the treatment of chronic periodontitis: A clinical and radiological correlation. Natl J Maxillofac Surg 2018; 9:22-32. [PMID: 29937655 PMCID: PMC5996659 DOI: 10.4103/njms.njms_12_18] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background This study aimed to evaluate the efficacy of local drug delivery system of zoledronate (ZLN) gel as an adjunct to scaling and root planing (SRP) for the treatment of human periodontal intrabony defects clinically and radiographically. Materials and Methods Forty intrabony defects (three walled and combined defects without involving furcation) in moderate to severely affected forty chronic periodontitis patients (range, 30-50 years) were randomly divided into two groups and treated either with 0.05% ZLN gel (ZLN n = 20; 1 dropout) or placebo gel (control group [CG] n = 20) after SRP. Clinical parameters such as plaque index (PI), gingival index (GI), tooth-specific pocket probing depth (Ts PPD), and clinical attachment levels (TsCAL) were assessed at baseline and at 3 and 6 months using occlusal acrylic stent. Radiographic parameters were assessed at baseline and 6 months, utilizing "ONIS 2.5 PROFESSIONAL" and "SYNGO" software compatible with DentaScan to measure the volumetric bone changes in intrabony defects. Results In intragroup comparisons, both groups showed significant PI and GI reduction (P < 0.001) after treatment at 3 and 6 months. In intergroup comparisons, Ts PPD reduction and Ts CAL gain were significant only in ZLN at 6 months from both baseline and 3 months. Radiographically, significant reduction in defect depth and buccolingual width with volumetric defect gain of 40.24% ± 7.44% in ZLN compared to insignificant gain of 1.60% ± 4.06% in CG was observed at 6 months. Conclusion ZLN gel applied subgingivally in intrabony defects resulted in significant improvements both clinically and radiographically.
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Affiliation(s)
- Abhaya Gupta
- Department of Periodontology, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Vivek Govila
- Department of Periodontology, Babu Banarasi Das College of Dental Sciences, Babu Banarasi Das University, Lucknow, Uttar Pradesh, India
| | - Vandana A Pant
- Department of Periodontology, Babu Banarasi Das College of Dental Sciences, Babu Banarasi Das University, Lucknow, Uttar Pradesh, India
| | - Rajiv Gupta
- Department of Pharmacognosy, Faculty of Pharmacy, Babu Banarasi Das National Institute of Technology and Management, Babu Banarasi Das University, Lucknow, Uttar Pradesh, India
| | - Umesh P Verma
- Department of Periodontology, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Hafsa Ahmad
- Division of Pharmaceutics, Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Sumedha Mohan
- Department of Periodontology, Babu Banarasi Das College of Dental Sciences, Babu Banarasi Das University, Lucknow, Uttar Pradesh, India
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Chang AR, Cho TH, Hwang SJ. Receptor Activator of Nuclear Factor Kappa-B Ligand-Induced Local Osteoporotic Canine Mandible Model for the Evaluation of Peri-Implant Bone Regeneration. Tissue Eng Part C Methods 2017; 23:781-794. [DOI: 10.1089/ten.tec.2017.0196] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Ah Ryum Chang
- Department of Oral and Maxillofacial Surgery, BK 21 Plus, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - Tae Hyung Cho
- Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - Soon Jung Hwang
- Department of Oral and Maxillofacial Surgery, BK 21 Plus, School of Dentistry, Seoul National University, Seoul, Republic of Korea
- Dental Research Institute, Seoul National University, Seoul, Republic of Korea
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Kellesarian SV, Subhi ALHarthi S, Saleh Binshabaib M, Javed F. Effect of local zoledronate delivery on osseointegration: a systematic review of preclinical studies. Acta Odontol Scand 2017; 75:530-541. [PMID: 28708011 DOI: 10.1080/00016357.2017.1350994] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
PURPOSE The aim of the present systematic review was to assess the effect of local zoledronate (ZOL) delivery (topical or as implant surface coatings) on osseointegration. MATERIALS AND METHODS In this systematic review, the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed. To address the focused question, 'Does local zoledronate delivery enhance osseointegration?' indexed databases were searched without time or language restrictions up to and including April 2017 using various combination of the following keywords: 'zoledronate', 'bisphosphonates', 'osseointegration' and 'topical administration'. Letters to the Editor, historic reviews, commentaries, case-series and case-reports were excluded. RESULTS Initially, 383 articles were identified out of which, 23 experimental studies fulfilled the inclusion criteria. In 18 studies, ZOL was incorporated into implants surfaces as a coating and in five studies ZOL was applied topically (bone graft or irrigation) into the bone cavities. Results from 87% studies reported that local delivery of ZOL (coating or topical) is effective in enhancing osseointegration or new bone formation around implants. CONCLUSIONS Local ZOL delivery (coating or topical) seems to enhance osseointegration in animals; however, from a clinical perspective, further randomized control trials with long-term follow-up are needed in this regard.
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Affiliation(s)
- Sergio Varela Kellesarian
- Department of General Dentistry, Eastman Institute for Oral Health, University of Rochester, Rochester, NY, USA
| | - Shatha Subhi ALHarthi
- Department of Periodontology, College of Dentistry, Princess Nourah Bint Abdulrahman University, Riyadh, Kingdom of Saudi Arabia
| | - Munerah Saleh Binshabaib
- Department of Periodontology, College of Dentistry, Princess Nourah Bint Abdulrahman University, Riyadh, Kingdom of Saudi Arabia
| | - Fawad Javed
- Department of General Dentistry, Eastman Institute for Oral Health, University of Rochester, Rochester, NY, USA
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Kwon DH, Lee SJ, Wikesjö UME, Johansson PH, Johansson CB, Sul YT. Bone tissue response following local drug delivery of bisphosphonate through titanium oxide nanotube implants in a rabbit model. J Clin Periodontol 2017; 44:941-949. [PMID: 28703333 DOI: 10.1111/jcpe.12776] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/09/2017] [Indexed: 11/27/2022]
Abstract
OBJECTIVES The objective of this study was to evaluate whether surface chemistry-controlled TiO2 nanotube structures may serve as a local drug delivery system for zoledronic acid improving implant-bone support. METHODS Twenty-four screw-shaped Ti implants with surface chemistry-controlled TiO2 nanotube structures were prepared and divided into a zoledronic acid-formatted test and a native control group. The implants were inserted into contra-lateral femoral condyles in 12 New Zealand White rabbits. Bone support was evaluated using resonance frequency analysis (RFA) and removal torque (RTQ), as well as histometric analysis following a 3-weeks healing interval. RESULTS Zoledronic acid-formatted TiO2 nanotube test implants showed significantly improved implant stability and osseointegration measured using RFA and RTQ compared with control (p < 0.05), and showed significantly enhanced new bone formation within the root of the threads compared with control (p < 0.05). CONCLUSIONS TiO2 nanotube implants may prove to be a significant delivery system for drugs or biologic agents aimed at supporting local bone formation. Additional study of candidate drugs/agents, optimized dosage and release kinetics is needed prior to evaluation in clinical settings.
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Affiliation(s)
- David H Kwon
- Department of Prosthodontics/Dental Materials Science, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Periodontics, 618th Dental Company, Camp Humphreys, Pyeongtaek, Korea
| | - Sang J Lee
- Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, MA, USA
| | - Ulf M E Wikesjö
- Laboratory for Applied Periodontal & Craniofacial Regeneration, Departments of Periodontics and Oral Biology, Augusta University
- Dental College of Georgia, Augusta, GA, USA
| | - Petra H Johansson
- Department of Prosthodontics/Dental Materials Science, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Carina B Johansson
- Department of Prosthodontics/Dental Materials Science, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Young-Taeg Sul
- Department of Prosthodontics/Dental Materials Science, Institute of Odontology, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Dikicier S, Dikicier E, Karacayli U, Erguder B. Radiodensitometric study for evaluation of bone mineral density around dental implants after zoledronic acid treatment in ovariectomized rats. Med Oral Patol Oral Cir Bucal 2017; 22:e377-e382. [PMID: 28390131 PMCID: PMC5432088 DOI: 10.4317/medoral.21706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 02/15/2017] [Indexed: 11/11/2022] Open
Abstract
Background The purpose of this study was to evaluate the effects of intravenous zoledronic acid applied systemically on osseointegration of dental implants and the surrounding bone mineral density (BMD) in the ovariectomized rats. Material and Methods 36 rats were divided into three groups: control (CTRL), ovariectomy (OVX), and ovariectomy-zoledronic acid (OVX/ZOL). The rats in the CTRL group underwent sham surgery, while rats in OVX and OVX / ZOL group underwent ovariectomy. After 12 weeks, rats from OVX / ZOL were injected with 0.04 mg/kg ZOL intravenously once a week for 6 weeks. The rats from CTRL and OVX groups were injected with 0.9% NaCl. Implants were placed in the left tibia. After 8 weeks, rats were sacrificed and tibia bones were removed for radiodensitometric examination. Digital radiographs of bones’ lateral surface were taken. The BMD was measured by using radiographic analysis software. Results Statistically significant differences were found between all groups (p<0.05). While highest mean BMD values were observed in the CTRL group, the lowest were in the OVX group. Conclusions The systemic use of ZOL has increased the bone density around the implants inserted osteoporotic rat tibia. Key words:Bisphosphonate, bone density, dental implants, osteoporosis.
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Affiliation(s)
- S Dikicier
- Department of Prosthodontics
Corlu State Hospital, 59186
Tekirdag, Turkey,
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Apostu D, Lucaciu O, Lucaciu GDO, Crisan B, Crisan L, Baciut M, Onisor F, Baciut G, Câmpian RS, Bran S. Systemic drugs that influence titanium implant osseointegration. Drug Metab Rev 2017; 49:92-104. [PMID: 28030966 DOI: 10.1080/03602532.2016.1277737] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Titanium implants are widely used on an increasing number of patients in orthopedic and dental medicine. Despite the good survival rates of these implants, failures that lead to important socio-economic consequences still exist. Recently, research aimed at improving implant fixation, a process called osseointegration, has focused on a new, innovative field: systemic delivery of drugs. Following implant fixation, patients receive systemic drugs that could either impair or enhance osseointegration; these drugs include anabolic and anti-catabolic bone-acting agents in addition to new treatments. Anabolic bone-acting agents include parathyroid hormone (PTH) peptides, simvastatin, prostaglandin EP4 receptor antagonist, vitamin D and strontium ranelate; anti-catabolic bone-acting agents include compounds like calcitonin, biphosphonates, RANK/RANKL/OPG system and selective estrogen receptor modulators (SERM). Examples of the new therapies include DKK1- and anti-sclerostin antibodies. All classes of treatments have proven to possess positive impacts such as an increase in bone mineral density and on osseointegration. In order to prevent complications from occurring after surgery, some post-operative systemic drugs are administered; these can show an impairment in the osseointegration process. These include nonsteroidal anti-inflammatory drugs, proton pump inhibitors and selective serotonin reuptake inhibitors. The effects of aspirin, acetaminophen, opioids, adjuvants, anticoagulants and antibiotics in implant fixations are not fully understood, but studies are being carried out to investigate potential ramifications. It is currently accepted that systemic pharmacological agents can either enhance or impair implant osseointegration; therefore, proper drug selection is essential. This review aims to discuss the varying effects of three different classes of treatments on improving this process.
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Affiliation(s)
- Dragos Apostu
- a Department of Orthopaedics and Traumatology , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj-Napoca , Romania
| | - Ondine Lucaciu
- b Department of Oral Rehabilitation , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj-Napoca , Romania
| | | | - Bogdan Crisan
- d Department of Maxillofacial Surgery and Oral Implantology , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj-Napoca , Romania
| | - Liana Crisan
- e Department of Oral and Maxillofacial Surgery , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj-Napoca , Romania
| | - Mihaela Baciut
- d Department of Maxillofacial Surgery and Oral Implantology , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj-Napoca , Romania
| | - Florin Onisor
- e Department of Oral and Maxillofacial Surgery , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj-Napoca , Romania
| | - Grigore Baciut
- e Department of Oral and Maxillofacial Surgery , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj-Napoca , Romania
| | - Radu Septimiu Câmpian
- b Department of Oral Rehabilitation , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj-Napoca , Romania
| | - Simion Bran
- d Department of Maxillofacial Surgery and Oral Implantology , Iuliu Hatieganu University of Medicine and Pharmacy , Cluj-Napoca , Romania
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Calciolari E, Donos N, Mardas N. Osteoporotic Animal Models of Bone Healing: Advantages and Pitfalls. J INVEST SURG 2016; 30:342-350. [DOI: 10.1080/08941939.2016.1241840] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Elena Calciolari
- Centre for Oral Clinical Research, Institute of Dentistry, Queen Mary University of London (QMUL), Barts and The London School of Medicine and Dentistry, London, UK
| | - Nikolaos Donos
- Centre for Oral Clinical Research, Institute of Dentistry, Queen Mary University of London (QMUL), Barts and The London School of Medicine and Dentistry, London, UK
| | - Nikos Mardas
- Centre for Adult Oral Health, Barts and The London School of Dentistry & Hospital, Queen Mary University of London (QMUL), London, UK
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Liu X, Zhang Y, Li S, Wang Y, Sun T, Li Z, Cai L, Wang X, Zhou L, Lai R. Study of a new bone-targeting titanium implant-bone interface. Int J Nanomedicine 2016; 11:6307-6324. [PMID: 27932879 PMCID: PMC5135286 DOI: 10.2147/ijn.s119520] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
New strategies involving bone-targeting titanium (Ti) implant-bone interface are required to enhance bone regeneration and osseointegration for orthopedic and dental implants, especially in osteoporotic subjects. In this study, a new dual-controlled, local, bone-targeting delivery system was successfully constructed by loading tetracycline-grafted simvastatin (SV)-loaded polymeric micelles in titania nanotube (TNT) arrays, and a bone-targeting Ti implant-bone interface was also successfully constructed by implanting the delivery system in vivo. The biological effects were evaluated both in vitro and in vivo. The results showed that Ti surfaces with TNT-bone-targeting micelles could promote cytoskeletal spreading, early adhesion, alkaline phosphatase activity, and extracellular osteocalcin concentrations of rat osteoblasts, with concomitant enhanced protein expression of bone morphogenetic protein (BMP)-2. A single-wall bone-defect implant model was established in normal and ovariectomized rats as postmenopausal osteoporosis models. Microcomputed tomography imaging and BMP-2 expression in vivo demonstrated that the implant with a TNT-targeting micelle surface was able to promote bone regeneration and osseointegration in both animal models. Therefore, beneficial biological effects were demonstrated both in vitro and in vivo, which indicated that the bone-targeting effects of micelles greatly enhance the bioavailability of SV on the implant-bone interface, and the provision of SV-loaded targeting micelles alone exhibits the potential for extensive application in improving local bone regeneration and osseointegration, especially in osteoporotic subjects.
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Affiliation(s)
- Xiangning Liu
- The Medical Center of Stomatology, The First Affiliated Hospital of Jinan University
| | - Ye Zhang
- The Medical Center of Stomatology, The First Affiliated Hospital of Jinan University
| | - Shaobing Li
- The Department of Oral Implantology, Guangdong Provincial Stomatological Hospital, Southern Medical University
| | - Yayu Wang
- Department of Cell Biology, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, People’s Republic of China
| | - Ting Sun
- The Medical Center of Stomatology, The First Affiliated Hospital of Jinan University
| | - Zejian Li
- The Medical Center of Stomatology, The First Affiliated Hospital of Jinan University
| | - Lizhao Cai
- The Medical Center of Stomatology, The First Affiliated Hospital of Jinan University
| | - Xiaogang Wang
- Department of Cell Biology, Institute of Biomedicine, College of Life Science and Technology, Jinan University, Guangzhou, People’s Republic of China
| | - Lei Zhou
- The Department of Oral Implantology, Guangdong Provincial Stomatological Hospital, Southern Medical University
| | - Renfa Lai
- The Medical Center of Stomatology, The First Affiliated Hospital of Jinan University
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Fu X, Tan J, Sun CG, Leng HJ, Xu YS, Song CL. Intraosseous Injection of Simvastatin in Poloxamer 407 Hydrogel Improves Pedicle-Screw Fixation in Ovariectomized Minipigs. J Bone Joint Surg Am 2016; 98:1924-1932. [PMID: 27852910 DOI: 10.2106/jbjs.15.00937] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Osteoporosis leads to poor osseointegration and reduces implant stability. Statins have been found to stimulate bone formation, but the bioavailability from oral administration is low. Local application may be more effective at augmenting bone formation and enhancing implant stability. This study was performed to evaluate the efficacy of an intraosseous injection of simvastatin in thermosensitive poloxamer 407 hydrogel to enhance pedicle-screw fixation in calcium-restricted ovariectomized minipigs. METHODS Nine mature female Guangxi Bama minipigs underwent bilateral ovariectomy and were fed a calcium-restricted diet for 18 months. Simvastatin (0, 0.5, or 1 mg) in thermosensitive poloxamer 407 hydrogel was injected into the lumbar vertebrae (L4-L6), and titanium alloy pedicle screws were implanted. Bone mineral density (BMD) measurements of the lumbar vertebrae were determined by dual x-ray absorptiometry (DXA) before and 3 months after treatment. The lumbar vertebrae were harvested and analyzed with use of microcomputed tomography, biomechanical pull-out testing, histological analysis, and Western blot analysis for bone morphogenetic protein (BMP)-2 and vascular endothelial growth factor (VEGF) expression. RESULTS Evaluation over a 3-month study period demonstrated that the BMD of the vertebrae injected with 0.5 and 1.0 mg of simvastatin had increased by 31.25% and 31.09%, respectively, compared with vehicle-only injection (p ≤ 0.00014 for both) and increased by 32.12% and 28.16%, respectively, compared with the pre-treatment levels (p < 0.0001 for both). A single injection of simvastatin in poloxamer 407 increased trabecular volume fraction, thickness, and number and decreased trabecular separation (p ≤ 0.002). The bone formation and mineral apposition rates significantly increased (p ≤ 0.023). The percentage of osseointegration in the simvastatin 0.5 and 1-mg groups was 46.54% and 42.63% greater, respectively, than that in the vehicle-only group (p ≤ 0.006), and the maximum pull-out strength was 45.75% and 51.53% greater, respectively, than in the vehicle-only group (p ≤ 0.0005). BMP-2 and VEGF expressions were higher than for the vehicle-only injection. CONCLUSIONS A single intraosseous injection of simvastatin in thermosensitive poloxamer 407 hydrogel stimulated bone formation, increased BMD, improved bone microstructure, promoted osseointegration, and significantly enhanced the stability of pedicle screws in calcium-restricted ovariectomized minipigs. CLINICAL RELEVANCE These results provide rationale for evaluating intraosseous injection of simvastatin in poloxamer 407 to enhance implant fixation in patients with osteoporosis.
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Affiliation(s)
- X Fu
- Departments of Orthopedics (X.F., J.T., C.G.S., H.J.L., and C.L.S.) and Neurology (Y.S.X.), Peking University Third Hospital, Beijing, People's Republic of China
| | - J Tan
- Departments of Orthopedics (X.F., J.T., C.G.S., H.J.L., and C.L.S.) and Neurology (Y.S.X.), Peking University Third Hospital, Beijing, People's Republic of China
| | - C G Sun
- Departments of Orthopedics (X.F., J.T., C.G.S., H.J.L., and C.L.S.) and Neurology (Y.S.X.), Peking University Third Hospital, Beijing, People's Republic of China.,Beijing Key Laboratory of Spinal Diseases, Beijing, People's Republic of China
| | - H J Leng
- Departments of Orthopedics (X.F., J.T., C.G.S., H.J.L., and C.L.S.) and Neurology (Y.S.X.), Peking University Third Hospital, Beijing, People's Republic of China.,Beijing Key Laboratory of Spinal Diseases, Beijing, People's Republic of China
| | - Y S Xu
- Departments of Orthopedics (X.F., J.T., C.G.S., H.J.L., and C.L.S.) and Neurology (Y.S.X.), Peking University Third Hospital, Beijing, People's Republic of China
| | - C L Song
- Departments of Orthopedics (X.F., J.T., C.G.S., H.J.L., and C.L.S.) and Neurology (Y.S.X.), Peking University Third Hospital, Beijing, People's Republic of China .,Beijing Key Laboratory of Spinal Diseases, Beijing, People's Republic of China
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Significance of osteogenic surface coatings on implants to enhance osseointegration under osteoporotic-like conditions. IMPLANT DENT 2016; 23:679-86. [PMID: 25290281 DOI: 10.1097/id.0000000000000161] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE The aim was to assess the significance of osteogenic surface coatings on implants to enhance osseointegration under osteoporotic-like (OP-like) conditions. METHODS To address the focused question "Do osteogenic surface coatings on implants enhance osseointegration under OP-like conditions?" PubMed/MEDLINE and Google-Scholar databases were searched from 1995 up to and including February 2014 using various keywords. Unpublished data, letters to the editor, review articles, and articles published in languages other than English were excluded. RESULTS Of the 28 studies identified, 11 experimental studies were included. These studies were performed on bilaterally ovariectomized animals. In all studies, implant surface roughness was increased by various osteogenetic surface coatings including alumina, hydroxyapatite, calcium phosphate, and zoledronic acid. Nine studies reported that compared with non-coated surfaces, osteogenic coatings on implant surfaces increases bone volume and bone-to-implant contact (BIC) under OP-like conditions. In 2 studies, there was no difference in BIC around hydroxyapatite-coated implants placed in animals with and without OP-like conditions. CONCLUSION Osteogenic coatings on implant surfaces enhanced osseointegration in animals with OP-like conditions. However, additional clinical studies are warranted to assess the role of osteogenic coatings in increasing osseointegration in patients with osteoporosis.
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Kim HS, Lee JI, Yang SS, Kim BS, Kim BC, Lee J. The effect of alendronate soaking and ultraviolet treatment on bone-implant interface. Clin Oral Implants Res 2016; 28:1164-1172. [PMID: 27458172 DOI: 10.1111/clr.12933] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2016] [Indexed: 01/08/2023]
Abstract
OBJECTIVE Rapid and stable fixation of dental implants is crucial for successful treatment. Herein, we examined whether the simultaneous treatment of titanium implants with ultraviolet (UV) and alendronate (ALN) synergistically improved the bone-to-implant contact. MATERIALS AND METHODS We assessed the in vitro effects of UV radiation-treated (UV+/ALN-), ALN-soaked (UV-/ALN+), and UV radiation/ALN-treated (UV+/ALN+) titanium implants on cell proliferation, cytotoxicity, cell adhesion, and osteoblast differentiation using MG-63 osteoblast-like cells by the assays of MTS, live/dead, scanning electron microscopy (SEM), alkaline phosphatase (ALP) activity, and alizarin red S (AR-S) staining, respectively. Furthermore, in vivo bone formation at the bone-implant interface efficiency determined using a rabbit tibia implantation. Implants were divided into 3 experimental groups (UV+/ALN-, UV-/ALN+, UV+/ALN+) and the non-treated control (UV-/ALN-) group and transplanted into the proximal tibia of rabbits. At 1, 2, 4, and 8 weeks post-operation, bone formation at the bone-implant interface was evaluated by micro-computed tomography and histological analysis. RESULTS MG-63 cells cultured on UV+/ALN+ implants showed significantly higher cell proliferation, ALP activity, and calcium mineralization than those cultured on other implants (P < 0.05). Furthermore, SEM observation showed the highest increase in cell attachment and growth on the UV+/ALN+ implants. In vivo, experimental groups at all time points showed greater peri-implant bone formation than the control group. At 8 weeks post-implantation, in the UV+/ALN+ group, significantly higher bone formation was observed than the UV+/ALN- or UV-/ALN+ group, respectively (P < 0.05). CONCLUSIONS Treatment of titanium surfaces with UV and ALN may synergistically enhance osteoblastic differentiation and mineralization in vitro and enhance bone formation at the bone-implant interface in vivo. These data suggest that UV and ALN treatment may improve the osseointegration of titanium implants.
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Affiliation(s)
- Hyung Soo Kim
- Department of Oral and Maxillofacial Surgery, Daejeon Dental Hospital, Wonkwang University, Daejeon, Korea
| | - Jae In Lee
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada
| | - Sun Sik Yang
- Wonkwnag Bone Regeneration Research Institute, Wonkwang University, Iksan, Korea
| | | | - Bong Chul Kim
- Department of Oral and Maxillofacial Surgery, Daejeon Dental Hospital, Wonkwang University, Daejeon, Korea
| | - Jun Lee
- Department of Oral and Maxillofacial Surgery, Daejeon Dental Hospital, Wonkwang University, Daejeon, Korea
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He B, Ou Y, Zhou A, Chen S, Zhao W, Zhao J, Li H, Zhu Y, Zhao Z, Jiang D. Functionalized d-form self-assembling peptide hydrogels for bone regeneration. DRUG DESIGN DEVELOPMENT AND THERAPY 2016; 10:1379-88. [PMID: 27114701 PMCID: PMC4833366 DOI: 10.2147/dddt.s97530] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Bone defects are very common in orthopedics, and there is great need to develop suitable bone grafts for transplantation in vivo. However, current bone grafts still encounter some limitations, including limited availability, immune rejection, poor osteoinduction and osteoconduction, poor biocompatibility and degradation properties, etc. Self-assembling peptide nanofiber scaffolds have emerged as an important substrate for cell culture and bone regeneration. We report on the structural features (eg, Congo red staining, circular dichroism spectroscopy, transmission electron microscopy, and rheometry assays) and osteogenic ability of d-RADA16-RGD peptide hydrogels (with or without basic fibroblast growth factor) due to the better stability of peptide bonds formed by these peptides compared with those formed by l-form peptides, and use them to fill the femoral condyle defect of Sprague Dawley rat model. The bone morphology change, two-dimensional reconstructions using microcomputed tomography, quantification of the microcomputed tomography analyses as well as histological analyses have demonstrated that RGD-modified d-form peptide scaffolds are able to enhance extensive bone regeneration.
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Affiliation(s)
- Bin He
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Yunsheng Ou
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Ao Zhou
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Shuo Chen
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Weikang Zhao
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Jinqiu Zhao
- Department of Infectious Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Hong Li
- School of Physical Science and Technology, Sichuan University, Chengdu, People's Republic of China
| | - Yong Zhu
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Zenghui Zhao
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Dianming Jiang
- Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
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Hegde V, Jo JE, Andreopoulou P, Lane JM. Effect of osteoporosis medications on fracture healing. Osteoporos Int 2016; 27:861-871. [PMID: 26419471 DOI: 10.1007/s00198-015-3331-7] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 09/17/2015] [Indexed: 01/19/2023]
Abstract
Antiosteoporotic medications are often used to concurrently treat a patient's fragility fractures and underlying osteoporosis. This review evaluates the existing literature from animal and clinical models to determine these drugs' effects on fracture healing. The data suggest that these medications may enhance bone healing, yet more thorough prospective studies are warranted. Pharmacologic agents that influence bone remodeling are an essential component of osteoporosis management. Because many patients are first diagnosed with osteoporosis when presenting with a fragility fracture, it is critical to understand how osteoporotic medications influence fracture healing. Vitamin D and its analogs are essential for the mineralization of the callus and may also play a role in callus formation and remodeling that enhances biomechanical strength. In animal models, antiresorptive medications, including bisphosphonates, denosumab, calcitonin, estrogen, and raloxifene, do not impede endochondral fracture healing but may delay repair due to impaired remodeling. Although bisphosphonates and denosumab delay callus remodeling, they increase callus volume and result in unaltered biomechanical properties. Calcitonin increases cartilage formation and callus maturation, resulting in improved biomechanical properties. Parathyroid hormone, an anabolic agent, has demonstrated promise in animal models, resulting in accelerated healing with increased callus volume and density, more rapid remodeling to mature bone, and improved biomechanical properties. Clinical data with parathyroid hormone have demonstrated enhanced healing in distal radius and pelvic fractures as well as postoperatively following spine surgery. Strontium ranelate, which may have both antiresorptive and anabolic properties, affects fracture healing differently in normal and osteoporotic bone. While there is no effect in normal bone, in osteoporotic bone, strontium ranelate increases callus bone formation, maturity, and mineralization; forms greater and denser trabeculae; and improves biomechanical properties. Further clinical studies with these medications are needed to fully understand their effects on fracture healing in order to simultaneously treat fragility fractures and underlying osteoporosis.
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Affiliation(s)
- V Hegde
- Department of Orthopaedic Surgery, University of California Los Angeles, 100 UCLA Medical Plaza, Suite 755, Los Angeles, CA, 90095, USA
| | - J E Jo
- Weill Cornell Medical College, 445 E 69th St, New York, NY, 10021, USA.
- Department of Orthopaedic Surgery, Hospital for Special Surgery, 475 East 72nd Street, Ground Floor, New York, NY, 10021, USA.
- , 2900 Main St. Apt 332, Bridgeport, CT, 06606, USA.
| | - P Andreopoulou
- Department of Endocrinology, Hospital for Special Surgery, 519 East 72nd St, Suite 202, New York, NY, 10021, USA
| | - J M Lane
- Department of Orthopaedic Surgery, Hospital for Special Surgery, 475 East 72nd Street, Ground Floor, New York, NY, 10021, USA
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Siebert T, Jurkovic R, Statelova D, Strecha J. Immediate Implant Placement in a Patient With Osteoporosis Undergoing Bisphosphonate Therapy: 1-Year Preliminary Prospective Study. J ORAL IMPLANTOL 2015; 41 Spec No:360-5. [DOI: 10.1563/aaid-joi-d-13-00063] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The purposes of this preliminary study are to assess the risk of developing bisphosphonate-related osteonecrosis of the jaw (BRONJ) in a patient with osteoporosis using zoledronic acid and to report the results of a 1-year prospective clinical study regarding 5 immediately inserted implants in the anterior mandible. For this comparative prospective study, 24 female patients, aged ≥54 years, were chosen, all with partially edentulous mandibles. Group A consisted of 12 patients with osteoporosis taking zoledronic acid receiving a once-yearly intravenous infusion of zoledronic acid (5 mg). Control group B consisted of 12 other patients without osteoporosis and not taking drugs. In both groups, the remaining teeth were extracted before 120 implants, 3.7-mm wide and 16-mm long, were immediately installed in the interforaminal region of the mandibles. The 1-year implant survival rate was 100%. No apparent necrotic bone was observed among patients receiving zoledronic acid (group A) after implant surgery. Immediate implant osseointegration can be successful in a patient with osteoporosis using bisphosphonates, suggesting the safety of implantology as a treatment modality.
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Affiliation(s)
- Tomas Siebert
- Department for Oral Surgery, Jessenius Faculty of Medicine, University of Komensky, Martin, Slovakia
| | - Richard Jurkovic
- Department for Oral Surgery, Jessenius Faculty of Medicine, University of Komensky, Martin, Slovakia
| | - Dagmar Statelova
- Department for Oral Surgery, Jessenius Faculty of Medicine, University of Komensky, Martin, Slovakia
| | - Juraj Strecha
- Department for Oral Surgery, Jessenius Faculty of Medicine, University of Komensky, Martin, Slovakia
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Wu CC, Kuo CL, Fan FY, Yang KC. Strontium-impregnated bioabsorbable composite for osteoporotic fracture fixation. J Biomed Mater Res A 2015; 103:3355-63. [DOI: 10.1002/jbm.a.35471] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 03/24/2015] [Accepted: 03/30/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Chang-Chin Wu
- Department of Orthopedics; National Taiwan University Hospital, College of Medicine, National Taiwan University; Taipei 10002 Taiwan
- Department of Orthopedics; En Chu Kong Hospital; New Taipei City 23702 Taiwan
| | - Chih-Lin Kuo
- School of Dental Technology, College of Oral Medicine, Taipei Medical University; Taipei 11031 Taiwan
| | - Fang-Yu Fan
- School of Dental Technology, College of Oral Medicine, Taipei Medical University; Taipei 11031 Taiwan
| | - Kai-Chiang Yang
- School of Dental Technology, College of Oral Medicine, Taipei Medical University; Taipei 11031 Taiwan
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Effects of oestrogen deficiency and 17β-estradiol therapy on bone healing in calvarial critical size defects treated with bovine bone graft. Arch Oral Biol 2015; 60:631-41. [DOI: 10.1016/j.archoralbio.2015.01.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 12/23/2014] [Accepted: 01/20/2015] [Indexed: 11/20/2022]
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Temporal changes of microarchitectural and mechanical parameters of cancellous bone in the osteoporotic rabbit. BIOMED RESEARCH INTERNATIONAL 2015; 2015:263434. [PMID: 25918705 PMCID: PMC4396142 DOI: 10.1155/2015/263434] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Revised: 03/10/2015] [Accepted: 03/17/2015] [Indexed: 12/05/2022]
Abstract
This study was aimed at elucidating the temporal changes of microarchitectural and mechanical parameters of cancellous bone in the osteoporotic rabbit model induced by ovariectomy (OVX) combined with glucocorticoid (GC) administration. Osteoporotic (OP) group received bilateral OVX combined with injections of GC, while sham group only received sham operation. Cancellous bone quality in vertebrae and femoral condyles in each group was assessed by DXA, μCT, nanoindentation, and biomechanical tests at pre-OVX and 4, 6, and 8 weeks after injection. With regard to femoral condyles, nanoindentation test could detect significant decline in tissue modulus and hardness at 4 weeks. However, BMD and microarchitecture of femoral condylar cancellous bone changed significantly at 6 weeks. In vertebrae, BMD, microarchitecture, nanoindentation, and biomechanical tests changed significantly at 4 weeks. Our data demonstrated that temporal changes of microarchitectural and mechanical parameters of cancellous bone in the osteoporotic rabbit were significant. The temporal changes of cancellous bone in different anatomical sites might be different. The nanoindentation method could detect the changes of bone quality at an earlier stage at both femoral condyle and vertebra in the osteoporotic rabbit model than other methods (μCT, BMD).
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Kettenberger U, Latypova A, Terrier A, Pioletti DP. Time course of bone screw fixation following a local delivery of Zoledronate in a rat femoral model - a micro-finite element analysis. J Mech Behav Biomed Mater 2015; 45:22-31. [PMID: 25679481 DOI: 10.1016/j.jmbbm.2015.01.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 01/03/2015] [Accepted: 01/05/2015] [Indexed: 11/30/2022]
Abstract
A good fixation of osteosynthesis implants is crucial for a successful bone healing but often difficult to achieve in osteoporotic patients. One possible solution to this issue is the local delivery of bisphosphonates in direct proximity to the implants, A critical aspect of this method, that has not yet been well investigated, is the time course of the implant fixation following the drug release. Usual destructive mechanical tests require large numbers of animals to produce meaningful results. Therefore, a micro-finite element (microFE) approach was chosen to analyze implant fixation. In vivo micro computed tomography (microCT) scans were obtained, first weekly and later bi-weekly, after implantation of polymeric screws in the femoral condyles of ovariectomized rats. In one half of the animals, Zoledronate was released from a hydrogel matrix directly in the peri-implant bone stock, the other animals were implanted only with screws as control. The time course of the implant fixation was investigated with linear elastic microFE models that were created based on in vivo microCT scans. The numerical models were validated against experimental pullout-tests measurements in an additional cadaver study. The microFE analysis revealed a significant increase in force at yield of the Zoledronate treated group compared to the control group. The force of the treated group was 28% higher after 17 days of screw implantation, 42% higher after 31 days. The significant difference persisted until the end of the in vivo study at day 58 (p<0.01). The early onset and prolonged duration of the implant anchorage improvement that was found in this study indicates the great potential of Zoledronate-loaded hydrogel for an enhancement of osteosynthesis implant fixation in impaired bone.
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Affiliation(s)
- Ulrike Kettenberger
- Laboratory of Biomechanical Orthopedics, Institute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland
| | - Adeliya Latypova
- Laboratory of Biomechanical Orthopedics, Institute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland
| | - Alexandre Terrier
- Laboratory of Biomechanical Orthopedics, Institute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland
| | - Dominique P Pioletti
- Laboratory of Biomechanical Orthopedics, Institute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland.
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Kyllönen L, D’Este M, Alini M, Eglin D. Local drug delivery for enhancing fracture healing in osteoporotic bone. Acta Biomater 2015; 11:412-34. [PMID: 25218339 DOI: 10.1016/j.actbio.2014.09.006] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Revised: 08/30/2014] [Accepted: 09/04/2014] [Indexed: 01/08/2023]
Abstract
Fragility fractures can cause significant morbidity and mortality in patients with osteoporosis and inflict a considerable medical and socioeconomic burden. Moreover, treatment of an osteoporotic fracture is challenging due to the decreased strength of the surrounding bone and suboptimal healing capacity, predisposing both to fixation failure and non-union. Whereas a systemic osteoporosis treatment acts slowly, local release of osteogenic agents in osteoporotic fracture would act rapidly to increase bone strength and quality, as well as to reduce the bone healing period and prevent development of a problematic non-union. The identification of agents with potential to stimulate bone formation and improve implant fixation strength in osteoporotic bone has raised hope for the fast augmentation of osteoporotic fractures. Stimulation of bone formation by local delivery of growth factors is an approach already in clinical use for the treatment of non-unions, and could be utilized for osteoporotic fractures as well. Small molecules have also gained ground as stable and inexpensive compounds to enhance bone formation and tackle osteoporosis. The aim of this paper is to present the state of the art on local drug delivery in osteoporotic fractures. Advantages, disadvantages and underlying molecular mechanisms of different active species for local bone healing in osteoporotic bone are discussed. This review also identifies promising new candidate molecules and innovative approaches for the local drug delivery in osteoporotic bone.
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Liang Y, Li H, Xu J, Li X, Li X, Yan Y, Qi M, Hu M. Strontium coating by electrochemical deposition improves implant osseointegration in osteopenic models. Exp Ther Med 2014; 9:172-176. [PMID: 25452797 PMCID: PMC4247308 DOI: 10.3892/etm.2014.2038] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Accepted: 10/03/2014] [Indexed: 12/17/2022] Open
Abstract
Osteopenia, a preclinical state of osteoporosis, restricts the application of adult orthodontic implant anchorage and tooth implantation. Strontium (Sr) is able to promote bone formation and inhibit bone absorption. The aim of the present study was to evaluate a new method for improving the success rate of dental implantation. In this study, an electrochemical deposition (ECD) method was used to prepare a Sr coating on a titanium implant. The coating composition was investigated by energy dispersive X-ray spectroscopy and X-ray diffraction, and the surface morphology of the coating was studied using scanning electron microscopy. A total of 24 Sprague-Dawley rats received bilateral ovariectomy (OVX) and an additional 12 rats underwent a sham surgery. All rats were then implanted in the bilateral tibiae with titanium mini-implants with or without a Sr coating. The results of histological examination and a fluorescence double labeling assay showed strong new bone formation with a wider zone between the double labels, a higher rate of bone mineralization and better osseointegration in the OVX rats that received Sr-coated implants compared with the OVX rats that received uncoated implants. The study indicates that Sr coatings are easily applied by an ECD method, and that Sr coatings have a promoting effect on implant osseointegration in animals with osteopenia.
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Affiliation(s)
- Yongqiang Liang
- College of Stomatology, Hebei United University, Tangshan, Hebei 063000, P.R. China ; Department of Stomatology, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Haoyan Li
- College of Stomatology, Hebei United University, Tangshan, Hebei 063000, P.R. China
| | - Jiang Xu
- Department of Stomatology, People's Hospital of Tongchuan, Shaanxi 727000, P.R. China
| | - Xin Li
- College of Stomatology, Hebei United University, Tangshan, Hebei 063000, P.R. China
| | - Xinchang Li
- College of Stomatology, Hebei United University, Tangshan, Hebei 063000, P.R. China
| | - Yuting Yan
- College of Stomatology, Hebei United University, Tangshan, Hebei 063000, P.R. China
| | - Mengchun Qi
- College of Stomatology, Hebei United University, Tangshan, Hebei 063000, P.R. China
| | - Min Hu
- Department of Stomatology, Chinese PLA General Hospital, Beijing 100853, P.R. China
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Liang YQ, Qi MC, Xu J, Xu J, Liu HW, Dong W, Li JY, Hu M. Low-magnitude high-frequency loading, by whole-body vibration, accelerates early implant osseointegration in ovariectomized rats. Mol Med Rep 2014; 10:2835-42. [PMID: 25270245 PMCID: PMC4227418 DOI: 10.3892/mmr.2014.2597] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Accepted: 07/04/2014] [Indexed: 01/12/2023] Open
Abstract
Osteoporosis deteriorates jaw bone quality and may compromise early implant osseointegration and early implant loading. The influence of low-magnitude, high-frequency (LMHF) vibration on peri-implant bone healing and implant integration in osteoporotic bones remains poorly understood. LMHF loading via whole-body vibration (WBV) for 8 weeks has previously been demonstrated to significantly enhance bone-to-implant contact, peri-implant bone fraction and implant mechanical properties in osteoporotic rats. In the present study, LMHF loading by WBV was performed in osteoporotic rats, with a loading duration of 4 weeks during the early stages of bone healing. The results indicated that 4-week LMHF loading by WBV partly reversed the negative effects of osteoporosis and accelerated early peri-implant osseointegration in ovariectomized rats.
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Affiliation(s)
- Yong-Qiang Liang
- Department of Stomatology, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Meng-Chun Qi
- College of Stomatology, Hebei United University, Tangshan, Hebei 063000, P.R. China
| | - Jiang Xu
- Department of Stomatology, Tongchuan City People's Hospital, Tongchuan, Shaanxi 727100, P.R. China
| | - Juan Xu
- Department of Stomatology, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Hua-Wei Liu
- Department of Stomatology, Chinese PLA General Hospital, Beijing 100853, P.R. China
| | - Wei Dong
- College of Stomatology, Hebei United University, Tangshan, Hebei 063000, P.R. China
| | - Jin-Yuan Li
- College of Stomatology, Hebei United University, Tangshan, Hebei 063000, P.R. China
| | - Min Hu
- Department of Stomatology, Chinese PLA General Hospital, Beijing 100853, P.R. China
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Ji Y, Wang L, Watts DC, Qiu H, You T, Deng F, Wu X. Controlled-release naringin nanoscaffold for osteoporotic bone healing. Dent Mater 2014; 30:1263-73. [PMID: 25238705 DOI: 10.1016/j.dental.2014.08.381] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Accepted: 08/29/2014] [Indexed: 11/19/2022]
Abstract
OBJECTIVES Osteoporosis is one of the most common bone diseases in the world and results from an imbalance of bone cell functions. In the process of guided bone regeneration, osteoporosis weakens the bonding strength between scaffold and bone. Naringin is evidenced to be effective for the treatment of osteoporosis and bone resorption and the aim was to explore methods and benefits of its incorporation. METHODS In this study, naringin was incorporated in the electrospun nanoscaffold containing poly(ɛ-caprolactone) (PCL) and poly(ethylene glycol)-block-poly(ɛ-caprolactone) (PEG-b-PCL). RESULTS The nanoscaffold demonstrated unchanged chemical structure, improved hydrophilicity, thinner and more uniform nanofibers by Fourier-transform infrared spectroscopy, contact angle measurement and scanning electron microscopy. The nanoscaffold also showed faster degradation rate and controlled-release of naringin. Osteoblast-nanoscaffold interactions were studied by the evaluation of adhesion, proliferation, differentiation of MC3T3-E1 osteoblasts and mineralization of ECM on the nanoscaffolds. Meanwhile, the response of osteoclasts to nanoscaffolds was evaluated in a mouse calvarial critical size defect organ culture model. The osteoclasts around the bone defect were shown by tartrate resistant acid phosphatase staining. SIGNIFICANCE The results demonstrated that controlled-release naringin nanoscaffolds supported greater osteoblast adhesion, proliferation, differentiation, and mineralization and suppressed osteoclast formation.
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Affiliation(s)
- Yan Ji
- Department of Prosthodontics, Stomatological Hospital of Chongqing Medical University, No. 426 Songshibei Road, Yubei District, Chongqing 401147, China; Chongqing key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing 401147, China
| | - Lu Wang
- Department of Prosthodontics, Stomatological Hospital of Chongqing Medical University, No. 426 Songshibei Road, Yubei District, Chongqing 401147, China; Chongqing key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing 401147, China
| | - David C Watts
- School of Dentistry and Photon Science Institute, The University of Manchester, Oxford Road, Manchester M13 9PL, UK; Institute of Material Science and Technology, Friedrich-Schiller-University, Jena, Löbdergraben 32, 07743, Germany
| | - Hongmei Qiu
- Key Laboratory of Biochemistry and Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Chongqing Medical University, Yixueyuan Road, Yuzhong District, Chongqing 400016, China
| | - Tao You
- Department of Prosthodontics, Stomatological Hospital of Chongqing Medical University, No. 426 Songshibei Road, Yubei District, Chongqing 401147, China; Chongqing key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing 401147, China
| | - Feng Deng
- Chongqing key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing 401147, China; Department of Orthodontics, Stomatological Hospital of Chongqing Medical University, No. 426 Songshibei Road, Yubei District, Chongqing 401147, China
| | - Xiaohong Wu
- Department of Prosthodontics, Stomatological Hospital of Chongqing Medical University, No. 426 Songshibei Road, Yubei District, Chongqing 401147, China; Chongqing key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing 401147, China.
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