1
|
Liu H, Pan W, Liu H, Xie D, Liao L. Biomimetic cryogel promotes the repair of osteoporotic bone defects through altering the ROS niche via down-regulating the ROMO1. Int J Biol Macromol 2024; 257:128481. [PMID: 38042316 DOI: 10.1016/j.ijbiomac.2023.128481] [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: 09/20/2023] [Revised: 11/22/2023] [Accepted: 11/27/2023] [Indexed: 12/04/2023]
Abstract
Osteoporosis is a systemic bone disease that is prone to fractures due to decreased bone density and bone quality, and delayed union or nonunion often occurs in osteoporotic fractures. Therefore, it is particularly important to develop tissue engineering materials to promote osteoporotic fracture healing. In this study, a series of biomimetic cryogels prepared from the decellularized extracellular matrix (dECM), methacrylate gelatin (GelMA), and carboxymethyl chitosan (CMCS) via unidirectional freezing, photo- and genipin crosslinking were applied for the regeneration of osteoporotic fractures. Specifically, dECM extracted from normal or osteoporotic rats was applied for the preparation of the cryogels, named as GC-Normal dECM or GC-OVX dECM, respectively. It was verified that the GC-Normal dECM demonstrated superior performance in promoting the proliferation of BMSCs isolated from osteoporotic rats (OVX-BMSCs), and the differentiation of OVX-BMSCs into osteoblasts both in vitro and in vivo. RNA sequencing and further verifications confirmed that GC-Normal dECM cryogel could scavenge the intracellular reactive oxygen species (ROS) in OVX-BMSCs to accelerate the regeneration of osteoporotic fracture by down-regulating the reactive oxygen species modulator 1 (Romo1). The results indicated that by regulating the ROS niche of OVX-BMSCs, biomimetic the GC-Normal dECM cryogel was expected to be a clinical candidate for repairing osteoporotic bone defects.
Collapse
Affiliation(s)
- Hai Liu
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Weilun Pan
- Department of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Honglin Liu
- Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Denghui Xie
- Academy of Orthopedics, Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degenerative Diseases, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510280, China.
| | - Liqiong Liao
- Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, Guangzhou, Guangdong 510515, China.
| |
Collapse
|
2
|
Almousa R, Xie D, Chen Y, Li J, Anderson GG. Thermoplastic polyurethane surface coated with polymer brushes for reduced protein and cell attachment. J Biomater Appl 2024; 38:758-771. [PMID: 37963494 DOI: 10.1177/08853282231213937] [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] [Indexed: 11/16/2023]
Abstract
The objective of this study was to coat negatively charged polymer brushes covalently onto the surface of thermoplastic polyurethane (TPU) using a simple conventional surface free-radical polymerization technique. The coated surfaces were assessed with contact angle, protein adsorption, cell adhesion and bacterial adhesion. Bovine serum albumin (BSA) and bovine fibrinogen (BFG) were used for protein adsorption evaluation. Mouse fibroblasts (NIH-3T3) and Pseudomonas aeruginosa (P. aeruginosa) were used to assess surface adhesion. Results show that the TPU surface modified with the attached polymer brushes exhibited significantly reduced contact angle, protein adsorption, and cell as well as bacterial adhesion, among which the negatively charged polymers showed the extremely low values in all the tests. Its contact angle is 5°, as compared to 70° for original TPU. Its BSA, BFG, 3T3 adhesion and P. aeruginosa adhesion were 93%, 84%, 92%, and 93% lower than original TPU. Furthermore, the TPU surface coated with negatively charged polymer brushes exhibited a hydrogel-like property. The results indicate that placing acrylic acids using a simple surface-initiated free-radical polymerization onto a TPU surface and then converting those to negative charges can be an effective and efficient route for fouling resistant applications.
Collapse
Affiliation(s)
- Rashed Almousa
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette IN, USA
- Department of Medical Equipment Technology, Majmaah University, Al-Majmaah, Saudi Arabia
| | - Dong Xie
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette IN, USA
- Department of Biomedical Engineering, Indiana University Purdue University at Indianapolis, Indianapolis, IN, United States
| | - Yong Chen
- Department of Biomedical Engineering, Indiana University Purdue University at Indianapolis, Indianapolis, IN, United States
| | - Jiliang Li
- Department of Biology, Indiana University-Purdue University at Indianapolis, Indianapolis, IN, USA
| | - Gregory G Anderson
- Department of Biology, Indiana University-Purdue University at Indianapolis, Indianapolis, IN, USA
| |
Collapse
|
3
|
DA Silva WPP, Delanora LA, Rios BR, Barbosa S, Simon MEDS, Sukotjo C, Faverani LP. Feasible low bone density condition for assessing bioactivity in ex-in vivo and in vivo studies. J Appl Oral Sci 2023; 31:e20220411. [PMID: 37436279 DOI: 10.1590/1678-7757-2022-0411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 03/29/2023] [Indexed: 07/13/2023] Open
Abstract
OBJECTIVE To choose a critical animal model for assessments of bone repair with implant installation by comparing senile rats (SENIL) to young ovariectomized rats (OXV). METHODOLOGY For the ex-in vivo study, the femurs were precursors for bone marrow mesenchymal stem cells. Cellular responses were performed, including cell viability, gene expression of osteoblastic markers, bone sialoprotein immunolocalization, alkaline phosphatase activity, and mineralized matrix formation. For the in vivo study, the animals received implants in the region of the bilateral tibial metaphysis for histometric, microtomography, reverse torque, and confocal microscopy. RESULTS Cell viability showed that the SENIL group had lower growth than OVX. Gene expression showed more critical responses for the SENIL group (p<0.05). The alkaline phosphatase activity obtained a lower expression in the SENIL group, as for the mineralization nodules (p<0.05). The in vivo histological parameters and biomechanical analysis showed lower data for the SENIL group. The confocal microscopy indicated the presence of a fragile bone in the SENIL group. The microtomography was similar between the groups. The histometry of the SENIL group showed the lowest values (p<0.05). CONCLUSION In experimental studies with assessments of bone repair using implant installation, the senile model promotes the most critical bone condition, allowing a better investigation of the properties of biomaterials and topographic changes.
Collapse
Affiliation(s)
- William Phillip Pereira DA Silva
- Universidade Estadual Paulista (UNESP), Faculdade de Odontologia de Araçatuba, Departamento de Diagnóstico e Cirurgia, São Paulo, Brasil
| | - Leonardo Alan Delanora
- Universidade Estadual Paulista (UNESP), Faculdade de Odontologia de Araçatuba, Departamento de Diagnóstico e Cirurgia, São Paulo, Brasil
| | - Barbara Ribeiro Rios
- Universidade Estadual Paulista (UNESP), Faculdade de Odontologia de Araçatuba, Departamento de Diagnóstico e Cirurgia, São Paulo, Brasil
| | - Stéfany Barbosa
- Universidade Estadual Paulista (UNESP), Faculdade de Odontologia de Araçatuba, Departamento de Diagnóstico e Cirurgia, São Paulo, Brasil
| | - Maria Eloise de Sá Simon
- Universidade Estadual Paulista (UNESP), Faculdade de Odontologia de Araçatuba, Departamento de Diagnóstico e Cirurgia, São Paulo, Brasil
| | - Cortino Sukotjo
- University of Illinois at Chicago, College of Dentistry, Department of Restorative Dentistry, Chicago, Illinois, United States
| | - Leonardo P Faverani
- Universidade Estadual Paulista (UNESP), Faculdade de Odontologia de Araçatuba, Departamento de Diagnóstico e Cirurgia, São Paulo, Brasil
| |
Collapse
|
4
|
Camargo WA, Hoekstra JW, Jansen JA, van den Beucken JJJP. Influence of bisphosphonate treatment on bone substitute performance in osteoporotic conditions. Clin Implant Dent Relat Res 2023. [PMID: 37121910 DOI: 10.1111/cid.13203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 02/02/2023] [Accepted: 03/11/2023] [Indexed: 05/02/2023]
Abstract
OBJECTIVE Considering the elevated number of osteoporotic patients in need of bone graft procedures, we here evaluated the effect of alendronate (ALN) treatment on the regeneration of bone defects in osteoporotic rats. Bone formation was histologically and histomorphometrically assessed in rat femoral condyle bone defects filled with bone graft (Bio-Oss®) or left empty. METHODS Male Wistar rats were induced osteoporotic through orchidectomy (ORX) and SHAM-operated. The animals were divided into three groups: osteoporotic (ORX), osteoporotic treated with ALN (ORX + ALN) and healthy (SHAM). Six weeks after ORX or SHAM surgeries, bone defects were created bilaterally in femoral condyles; one defect was filled with Bio-Oss® and the other one left empty. Bone regeneration within the defects was analyzed by histology and histomorphometry after 4 and 12 weeks. RESULTS Histological samples showed new bone surrounding Bio-Oss® particles from week 4 onward in all three groups. At week 12, the data further showed that ALN treatment of osteoporotic animals enhanced bone formation to a 10-fold increase compared to non-treated osteoporotic control. Bio-Oss® filling of the defects promoted bone formation at both implantation periods compared to empty controls. CONCLUSION Our histological and histomorphometric results demonstrate that the enteral administration of alendronate under osteoporotic bone conditions leverages bone defect regeneration to a level comparable to that in healthy bone. Additionally, Bio-Oss® is an effective bone substitute, increasing bone formation, and acting as an osteoconductive scaffold guiding bone growth in both healthy and osteoporotic bone conditions. SIGNIFICANCE Based on the results of this study, enteral use of ALN mitigates adverse effects of an osteoporotic condition on bone defect regeneration.
Collapse
Affiliation(s)
- Winston Adam Camargo
- Dentistry - Regenerative Biomaterials (309), Radboudumc, Nijmegen, The Netherlands
| | - Jan Willem Hoekstra
- Dentistry - Regenerative Biomaterials (309), Radboudumc, Nijmegen, The Netherlands
| | - John A Jansen
- Dentistry - Regenerative Biomaterials (309), Radboudumc, Nijmegen, The Netherlands
| | | |
Collapse
|
5
|
Sandomierski M, Jakubowski M, Ratajczak M, Voelkel A. Drug distribution evaluation using FT-IR imaging on the surface of a titanium alloy coated with zinc titanate with potential application in the release of drugs for osteoporosis. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 281:121575. [PMID: 35797951 DOI: 10.1016/j.saa.2022.121575] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/22/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
The drugs most commonly used in the treatment of osteoporosis are bisphosphonates. This disease results in low mineral density and a weakened bone microstructure. The delivery methods for these drugs have many disadvantages, and new ones are being searched for. In this work, biocompatible zinc titanate coated titanium implants were obtained as potential new carriers for drugs. Such a material will release the drug, and it will have antibacterial properties. Gradual release of the bisphosphonate will have a positive effect on the recovery process and osteointegration. In addition, the drug will be released around the affected bones. The effectiveness of the modification and attachment of the drug was confirmed by SEM, XPS, EDS, FT-IR imaging, and UV-VIS. It was shown that the risedronate could be almost completely released upon contact with body fluids within a week. The drug is evenly distributed over the entire surface of the alloy as confirmed by FT-IR imaging. The results presented in this work will allow for the preparation of endoprostheses that release the drug and have antibacterial properties.
Collapse
Affiliation(s)
- Mariusz Sandomierski
- Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznań, Poland.
| | - Marcel Jakubowski
- Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznań, Poland
| | - Maria Ratajczak
- Institute of Building Engineering, Poznan University of Technology, ul. Piotrowo 5, 60-965 Poznań, Poland
| | - Adam Voelkel
- Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznań, Poland
| |
Collapse
|
6
|
Liang C, Liu X, Yan Y, Sun R, Li J, Geng W. Effectiveness and Mechanisms of Low-Intensity Pulsed Ultrasound on Osseointegration of Dental Implants and Biological Functions of Bone Marrow Mesenchymal Stem Cells. Stem Cells Int 2022; 2022:7397335. [PMID: 36199628 PMCID: PMC9529500 DOI: 10.1155/2022/7397335] [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: 05/31/2022] [Accepted: 09/09/2022] [Indexed: 11/27/2022] Open
Abstract
Dental implant restoration is the preferred choice for patients with dentition defects or edentulous patients, and obtaining stable osseointegration is the determining factor for successful implant healing. The risk of implant failure during the healing stage is still an urgent problem in clinical practice due to differences in bone quality at different implant sites and the impact of some systemic diseases on bone tissue metabolism. Low-intensity pulsed ultrasound (LIPUS) is a noninvasive physical intervention method widely recognized in the treatment of bone fracture and joint damage repair. Moreover, many studies indicated that LIPUS could effectively promote the osseointegration of dental implants and improve the osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). This review is aimed at investigating the research progress on the use of LIPUS in dental implant medicine from three aspects: (1) discuss the promoting effects of LIPUS on osseointegration and peri-implant bone regeneration, (2) summarize the effects and associated mechanisms of LIPUS on the biological functions of BMSCs, and (3) introduce the application and prospects of LIPUS in the clinical work of dental implantation. Although many challenges need to be overcome in the future, LIPUS is bound to be an efficient and convenient therapeutic method to improve the dental implantation success rate and expand clinical implant indications.
Collapse
Affiliation(s)
- Chao Liang
- Department of Dental Implant Center, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China
- Beijing Institute of Dental Research, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China
| | - Xiu Liu
- Beijing Institute of Dental Research, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China
| | - Yuwei Yan
- Department of Dental Implant Center, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China
| | - Rongxin Sun
- Department of Dental Implant Center, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China
| | - Jun Li
- Department of Dental Implant Center, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China
- Beijing Institute of Dental Research, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China
| | - Wei Geng
- Department of Dental Implant Center, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China
| |
Collapse
|
7
|
Biswas L, Niveria K, Verma AK. Paradoxical role of reactive oxygen species in bone remodelling: implications in osteoporosis and possible nanotherapeutic interventions. EXPLORATION OF MEDICINE 2022. [DOI: 10.37349/emed.2022.00102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Osteoporosis is a metabolic bone disorder that affects both sexes and is the most common cause of fractures. Osteoporosis therapies primarily inhibit osteoclast activity, and are seldom designed to trigger new bone growth thereby frequently causing severe systemic adverse effects. Physiologically, the intracellular redox state depends on the ratio of pro-oxidants, oxidizing agents (reactive oxygen species, ROS) and antioxidants. ROS is the key contributor to oxidative stress in osteoporosis as changes in redox state are responsible for dynamic bone remodeling and bone regeneration. Imbalances in ROS generation vs. antioxidant systems play a pivotal role in pathogenesis of osteoporosis, stimulating osteoblasts and osteocytes towards osteoclastogenesis. ROS prevents mineralization and osteogenesis, causing increased turnover of bone loss. Alternatively, antioxidants either directly or indirectly, contribute to activation of osteoblasts leading to differentiation and mineralization, thereby reducing osteoclastogenesis. Owing to the unpredictability of immune responsiveness and reported adverse effects, despite promising outcomes from drugs against oxidative stress, treatment in clinics targeting osteoclast has been limited. Nanotechnology-mediated interventions have gained remarkable superiority over other treatment modalities in regenerative medicine. Nanotherapeutic approaches exploit the antioxidant properties of nanoparticles for targeted drug delivery to trigger bone repair, by enhancing their osteogenic and anti-osteoclastogenic potentials to influence the biocompatibility, mechanical properties and osteoinductivity. Therefore, exploiting nanotherapeutics for maintaining the differentiation and proliferation of osteoblasts and osteoclasts is quintessential.
Collapse
Affiliation(s)
- Largee Biswas
- 1Nanobiotech lab, Department of Zoology, Kirori Mal College, University of Delhi, Delhi 110007, India
| | - Karishma Niveria
- 1Nanobiotech lab, Department of Zoology, Kirori Mal College, University of Delhi, Delhi 110007, India
| | - Anita Kamra Verma
- 1Nanobiotech lab, Department of Zoology, Kirori Mal College, University of Delhi, Delhi 110007, India 2Fellow, Delhi School of Public Health, Institution of Eminence, University of Delhi, Delhi 110007, India
| |
Collapse
|
8
|
Sandomierski M, Jakubowski M, Ratajczak M, Voelkel A. Zeolitic Imidazolate Framework‑8 (ZIF-8) modified titanium alloy for controlled release of drugs for osteoporosis. Sci Rep 2022; 12:9103. [PMID: 35650310 PMCID: PMC9160252 DOI: 10.1038/s41598-022-13187-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 05/20/2022] [Indexed: 11/20/2022] Open
Abstract
The aim of this work was to prepare a biocompatible implant material that enables the release of drug for osteoporosis—risedronate. To achieve this goal, a titanium implant coated with a biocompatible Zeolitic Imidazolate Framework 8 (ZIF-8) layer was prepared that promotes osseointegration at the bone-implant interface. The modifications of the titanium alloy as well as sorption and desorption processes were confirmed using a variety of methods: SEM, EDS XPS, and FT-IR imaging (to determine surface modification, drug distribution, and risedronate sorption), and UV–Vis spectroscopy (to determine drug sorption and release profile). Both the ZIF-8 layer and the drug are evenly distributed on the surface of the titanium alloy. The obtained ZIF-8 layer did not contain impurities and zinc ions were strongly bounded by ZIF-8 layer. The ZIF-8 layer was stable during drug sorption. The drug was released in small doses for 16 h, which may help patients recover immediately after surgery. This is the first case of using ZIF-8 on the surface of the titanium alloy as carrier that releases the drug under the influence of body fluids directly at the site of the disease. It is an ideal material for implants designed for people suffering from osteoporosis.
Collapse
Affiliation(s)
- Mariusz Sandomierski
- Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965, Poznan, Poland.
| | - Marcel Jakubowski
- Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965, Poznan, Poland
| | - Maria Ratajczak
- Institute of Building Engineering, Poznan University of Technology, ul. Piotrowo 5, 60-965, Poznan, Poland
| | - Adam Voelkel
- Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965, Poznan, Poland
| |
Collapse
|
9
|
Mapping Bone Marrow Cell Response from Senile Female Rats on Ca-P-Doped Titanium Coating. MATERIALS 2022; 15:ma15031094. [PMID: 35161039 PMCID: PMC8839629 DOI: 10.3390/ma15031094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/12/2022] [Accepted: 01/20/2022] [Indexed: 12/04/2022]
Abstract
Chemical and topographical surface modifications on dental implants aim to increase the bone surface contact area of the implant and improve osseointegration. This study analyzed the cellular response of undifferentiated mesenchymal stem cells (MSC), derived from senile rats’ femoral bone marrow, when cultured on a bioactive coating (by plasma electrolytic oxidation, PEO, with Ca2+ and P5+ ions), a sandblasting followed by acid-etching (SLA) surface, and a machined surface (MSU). A total of 102 Ti-6Al-4V discs were divided into three groups (n = 34). The surface chemistry was analyzed by energy dispersive spectroscopy (EDS). Cell viability assay, gene expression of osteoblastic markers, and mineralized matrix formation were investigated. The cell growth and viability results were higher for PEO vs. MSU surface (p = 0.001). An increase in cell proliferation from 3 to 7 days (p < 0.05) and from 7 to 10 days (p < 0.05) was noted for PEO and SLA surfaces. Gene expression for OSX, ALP, BSP, and OPN showed a statistical significance (p = 0.001) among groups. In addition, the PEO surface showed a higher mineralized matrix bone formation (p = 0.003). In conclusion, MSC from senile female rats cultured on SLA and PEO surfaces showed similar cellular responses and should be considered for future clinical investigations.
Collapse
|
10
|
Dai X, Bai Y, Heng BC, Li Y, Tang Z, Lin C, Liu O, He Y, Zhang X, Deng X. Biomimetic hierarchical implant surface promotes early osseointegration in osteoporosis rats by suppressing macrophage activation and osteoclastogenes. J Mater Chem B 2022; 10:1875-1885. [PMID: 35234787 DOI: 10.1039/d1tb02871e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Successful implant-bone integration remains a formidable challenge in osteoporosis patients, because of excessive inflammatory reaction and osteoclastogenesis around the peri-implant bone tissue. This study designed biomimetic micro/sub-micro hierarchical surfaces on...
Collapse
Affiliation(s)
- Xiaohan Dai
- Academician Workstation for Oral-Maxilofacial and Regenerative Medicine & Hunan Key Laboratory of Oral Health Research & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha 410008, P. R. China.
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China.
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China.
| | - Yunyang Bai
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China.
| | - Boon Chin Heng
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Yiping Li
- Academician Workstation for Oral-Maxilofacial and Regenerative Medicine & Hunan Key Laboratory of Oral Health Research & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha 410008, P. R. China.
| | - Zhangui Tang
- Academician Workstation for Oral-Maxilofacial and Regenerative Medicine & Hunan Key Laboratory of Oral Health Research & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha 410008, P. R. China.
| | - Changjian Lin
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Ousheng Liu
- Academician Workstation for Oral-Maxilofacial and Regenerative Medicine & Hunan Key Laboratory of Oral Health Research & Hunan Clinical Research Center of Oral Major Diseases and Oral Health & Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha 410008, P. R. China.
| | - Ying He
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China.
| | - Xuehui Zhang
- Department of Dental Materials & Dental Medical Devices Testing Center, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China.
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Xuliang Deng
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China.
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, NMPA Key Laboratory for Dental Materials, Beijing Laboratory of Biomedical Materials, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| |
Collapse
|
11
|
Liu J, Kang H, Lu J, Dai Y, Wang F. Experimental study of the effects of hypoxia simulator on osteointegration of titanium prosthesis in osteoporotic rats. BMC Musculoskelet Disord 2021; 22:944. [PMID: 34763682 PMCID: PMC8588664 DOI: 10.1186/s12891-021-04777-6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 10/06/2021] [Indexed: 12/27/2022] Open
Abstract
Background Poor osseointegration is the key reason for implant failure after arthroplasty,whether under osteoporotic or normal bone conditions. To date, osseointegration remains a major challenge. Recent studies have shown that deferoxamine (DFO) can accelerate osteogenesis by activating the hypoxia signaling pathway. The purpose of this study was to test the following hypothesis: after knee replacement, intra-articular injection of DFO will promote osteogenesis and osseointegration with a 3D printed titanium prosthesis in the bones of osteoporotic rats. Materials and methods Ninety female Sprague–Dawley rats were used for the experiment. Ten rats were used to confirm the successful establishment of the osteoporosis model: five rats in the sham operation group and five rats in the ovariectomy group. After ovariectomy and knee arthroplasty were performed, the remaining 80 rats were randomly divided into DFO and control groups (n = 40 per group). The two groups were treated by intraarticular injection of DFO and saline respectively. After 2 weeks, polymerase chain reaction (PCR) and immunohistochemistry were used to evaluate the levels of HIF-1a, VEGF, and CD31. HIF-1a and VEGF have been shown to promote angiogenesis and bone regeneration, and CD31 is an important marker of angiogenesis. After 12 weeks, the specimens were examined by micro-computed tomography (micro-CT), biomechanics, and histopathology to evaluate osteogenesis and osseointegration. Results The results of PCR showed that the mRNA levels of VEGF and CD31 in the DFO group were significantly higher than those in the control group. The immunohistochemistry results indicated that positive cell expression of HIF-1a, VEGF, and CD31 in the DFO group was also higher. Compared with the control group, the micro-CT parameters of BMD, BV/TV, TB. N, and TB. Th were significantly higher. The maximal pull-out force and the bone-to-implant contact value were also higher. Conclusions The local administration of DFO, which is used to activate the HIF-1a signaling pathway, can promote osteogenesis and osseointegration with a prosthesis in osteoporotic bone.
Collapse
Affiliation(s)
- Jiangfeng Liu
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Ziqiang Road 139, Shijiazhuang, 050051, China
| | - Huijun Kang
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Ziqiang Road 139, Shijiazhuang, 050051, China
| | - Jiangfeng Lu
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Ziqiang Road 139, Shijiazhuang, 050051, China
| | - Yike Dai
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Ziqiang Road 139, Shijiazhuang, 050051, China
| | - Fei Wang
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Ziqiang Road 139, Shijiazhuang, 050051, China.
| |
Collapse
|
12
|
Detonation Spraying of Hydroxyapatite on a Titanium Alloy Implant. MATERIALS 2021; 14:ma14174852. [PMID: 34500941 PMCID: PMC8432648 DOI: 10.3390/ma14174852] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/17/2021] [Accepted: 08/22/2021] [Indexed: 11/16/2022]
Abstract
Hydroxyapatite (HA), the major mineral component of tooth enamel and natural bones, is a good candidate for bone tissue engineering. Synthetic HA is used for making coatings on metallic implants intended for medical applications. A HA coating renders the implant biocompatible and osteoinductive. In addition, it improves fixation and the overall performance of the implanted object. In the present work, HA coatings were deposited on a medical titanium alloy implant with mesh geometry and a developed surface by detonation spraying. The feedstock powder was HA obtained by the dry mechanochemical method. Single-phase HA coatings were obtained. The coatings were formed not only on the surfaces normal to the particle flow direction, but also on the sides of the mesh elements. Despite partial melting of the powder, no decomposition of HA occurred. This work demonstrates the prospects of detonation spraying for the production of HA coatings on metallic implants with complex geometries.
Collapse
|
13
|
Sandomierski M, Zielińska M, Buchwald T, Patalas A, Voelkel A. Controlled release of the drug for osteoporosis from the surface of titanium implants coated with calcium titanate. J Biomed Mater Res B Appl Biomater 2021; 110:431-437. [PMID: 34288398 DOI: 10.1002/jbm.b.34919] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 06/16/2021] [Accepted: 07/08/2021] [Indexed: 12/15/2022]
Abstract
The most popular drugs used to prevent osteoporosis that causes low mineral density and weakened microstructure of bones are bisphosphonates. Bisphosphonates can be administered in several ways, but each delivery method has drawbacks. Due to this, new methods of their delivery are being sought. Titanium implants coated with calcium titanate were prepared in this work as carriers for bisphosphonates. Such a modification has been proposed in order to improve the therapeutic properties of the implant. Slow release of the drug at a constant level will positively affect the recovery process and osteointegration. Furthermore, the drug will be slowly released very close to the area affected by osteoporosis. These studies were confirmed, using a variety of methods: EDS and XPS (to examine surface modification and drug sorption), Raman mapping (to proof the presence of the drug on the entire surface of the material) and UV-VIS spectroscopy (to determine bisphosphonate sorption and release profile). It was proved that the active substance (sorbed on the implant) could be completely released upon contact with body fluids within a month. The obtained results will allow for the production of endoprostheses dedicated to patients with osteoporosis in the future.
Collapse
Affiliation(s)
- Mariusz Sandomierski
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Poznań, Poland
| | - Monika Zielińska
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Poznań, Poland
| | - Tomasz Buchwald
- Institute of Materials Research and Quantum Engineering, Poznań University of Technology, Poznań, Poland
| | - Adam Patalas
- Institute of Mechanical Technology, Poznań University of Technology, Poznań, Poland
| | - Adam Voelkel
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Poznań, Poland
| |
Collapse
|
14
|
van Houdt CIA, Koolen MKE, Lopez-Perez PM, Ulrich DJO, Jansen JA, Leeuwenburgh SCG, Weinans HH, van den Beucken JJJP. Regenerating Critical Size Rat Segmental Bone Defects with a Self-Healing Hybrid Nanocomposite Hydrogel: Effect of Bone Condition and BMP-2 Incorporation. Macromol Biosci 2021; 21:e2100088. [PMID: 34117838 DOI: 10.1002/mabi.202100088] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 05/14/2021] [Indexed: 12/19/2022]
Abstract
The aim of the current study is to assess the biological performance of self-healing hydrogels based on calcium phosphate (CaP) nanoparticles and bisphosphonate (BP) conjugated hyaluronan (HA) in a critical size segmental femoral bone defect model in rats. Additionally, these hydrogels are loaded with bone morphogenetic protein 2 (BMP-2) and their performance is compared in healthy and osteoporotic bone conditions. Treatment groups comprise internal plate fixation and placement of a PTFE tube containing hydrogel (HABP -CaP) or hydrogel loaded with BMP-2 in two dosages (HABP -CaP-lowBMP2 or HABP -CaP-highBMP2). Twelve weeks after bone defect surgery, bone formation is analyzed by X-ray examination, micro-CT analysis, and histomorphometry. The data show that critical size, segmental femoral bone defects cannot be healed with HABP -CaP gel alone. Loading of the HABP -CaP gel with low dose BMP-2 significantly improve bone formation and resulted in defect bridging in 100% of the defects. Alternatively, high dose BMP-2 loading of the HABP -CaP gel does not improve bone formation within the defect area, but leads to excessive bone formation outside the defect area. Bone defect healing is not affected by osteoporotic bone conditions.
Collapse
Affiliation(s)
- Claire I A van Houdt
- Biomaterials, Plastic, Reconstructive and Hand Surgery, Radboudumc, Geert Grooteplein Zuid 10, Nijmegen, Gelderland, 6525 GA, The Netherlands
| | - Marianne K E Koolen
- Orthopedics, UMC Utrecht, Heidelberglaan 100, Utrecht, Utrecht, 3584 CX, The Netherlands
| | - Paula M Lopez-Perez
- Biomaterials, Radboudumc, Philips van Leijdenlaan 25, Nijmegen, Gelderland, 6525 EX, The Netherlands
| | - Dietmar J O Ulrich
- Plastic, Reconstructive and Hand Surgery, Radboudumc, Geert Grooteplein Zuid 10, Nijmegen, Gelderland, 6525 GA, The Netherlands
| | - John A Jansen
- Biomaterials, Radboudumc, Philips van Leijdenlaan 25, Nijmegen, Gelderland, 6525 EX, The Netherlands
| | - Sander C G Leeuwenburgh
- Biomaterials, Radboudumc, Philips van Leijdenlaan 25, Nijmegen, Gelderland, 6525 EX, The Netherlands
| | - Harrie H Weinans
- Orthopedics, UMC Utrecht, Heidelberglaan 100, Utrecht, Utrecht, 3584 CX, The Netherlands
| | | |
Collapse
|
15
|
Wu T, Li Z, Chen Y, Liu Q, Zhang J, Yu K, Wang Y, Wang Z, Gong T. PDMS-enhanced slowly degradable Ca-P-Si scaffold: Material characterization, fabrication and in vitro biocompatibility study. J Appl Biomater Funct Mater 2021; 19:22808000211023261. [PMID: 34102914 DOI: 10.1177/22808000211023261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A slowly degradable bone scaffold can well maintain the balance between new bone regeneration and scaffold resorption, esp. for seniors or patients suffering from pathological diseases, because too fast degradation can lead to the loss of long-term biological stability and result in scaffold failure. In this present study, calcium phosphate silicate (CPS) and polydimethylsiloxane (PDMS) were blended in different ratios to formulate slurries for scaffold fabrication. The effects of crosslinked PDMS on the CPS material properties were first characterized and the most viable formulation of CPS-PDMS slurry was determined based on the aforementioned results to 3D fabricate scaffolds. The biocompatibility of CPS-PDMS was further evaluated based on the scaffold extract's cytotoxicity to osteoblast cells. Furthermore, real-time PCR was used to investigate the effects of scaffold extract to increase osteoblast proliferation. It is showed that the crosslinked PDMS interfered with CPS hydration and reduced both setting rate and compressive strength of CPS. In addition, CPS porosity was also found to increase with PDMS due to uneven water distribution as a result of increased hydrophobicity. Degradation and mineralization studies show that CPS-PDMS scaffold was slowly degradable and induced apatite formation. In addition, the in vitro analyses show that the CPS-PDMS scaffold did not exert any cytotoxic effect on osteoblast cells but could improve the cell proliferation via the TGFβ/BMP signaling pathway. In conclusion, CPS-PDMS scaffold is proved to be slowly degradable and biocompatible. Further analyses are therefore needed to demonstrate CPS-PDMS scaffold applications in bone regeneration.
Collapse
Affiliation(s)
- Tao Wu
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Zhanpeng Li
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Yadong Chen
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Qiang Liu
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Jingshu Zhang
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Kun Yu
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Yu Wang
- Department of Orthopedics, General Hospital of Northern Theater Command, Shenyang, China
| | - Zhiguo Wang
- Department of Nuclear Medicine, General Hospital of Northern Theater Command, Shenyang, China
| | - Tianxing Gong
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| |
Collapse
|
16
|
Bondarenko S, Filipenko V, Karpinsky M, Karpinska O, Ivanov G, Maltseva V, Badnaoui AA, Schwarzkopf R. Osseointegration of porous titanium and tantalum implants in ovariectomized rabbits: A biomechanical study. World J Orthop 2021; 12:214-222. [PMID: 33959485 PMCID: PMC8082506 DOI: 10.5312/wjo.v12.i4.214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 02/01/2021] [Accepted: 03/11/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Today, biological fixation of uncemented press-fit acetabular components plays an important role in total hip arthroplasty. Long-term stable fixation of these implants depends on the osseointegration of the acetabular cup bone tissue into the acetabular cup implant, and their ability to withstand functional loads.
AIM To compare the strength of bone-implant osseointegration of four types of porous metal implants in normal and osteoporotic bone in rabbits.
METHODS The study was performed in 50 female California rabbits divided into non-ovariectomized (non-OVX) and ovariectomized groups (OVX) at 6 mo of age. Rabbits were sacrificed 8 wk after the implantation of four biomaterials [TTM, CONCELOC, Zimmer Biomet's Trabecular Metal (TANTALUM), and ATLANT] in a 5-mm diameter defect created in the left femur. A biomechanical evaluation of the femur was carried out by testing implant breakout force. The force was gradually increased until complete detachment of the implant from the bone occurred.
RESULTS The breakout force needed for implant detachment was significantly higher in the non-OVX group, compared with the OVX group for all implants (TANTALUM, 194.7 ± 6.1 N vs 181.3 ± 2.8 N; P = 0.005; CONCELOC, 190.8 ± 3.6 N vs 180.9 ± 6.6 N; P = 0.019; TTM, 186.3 ± 1.8 N vs 172.0 N ± 11.0 N; P = 0.043; and ATLANT, 104.9 ± 7.0 N vs 78.9 N ± 4.5 N; P = 0.001). In the OVX group, The breakout forces in TANTALUM, TTM, and CONCELOC did not differ significantly (P = 0.066). The breakout force for ATLANT in the OVX group was lower by a factor of 2.3 compared with TANTALUM and CONCELOC, and by 2.2 compared with TTM (P = 0.001). In the non-OVX group, the breakout force for ATLANT was significantly different from all other implants, with a reduction in fixation strength by a factor of 1.9 (P = 0.001).
CONCLUSION TANTALUM, TTM, and CONCELOC had equal bone-implant osseointegration in healthy and in osteoporotic bone. ATLANT had significantly decreased osseointegration (P = 0.001) in healthy and in osteoporotic bone.
Collapse
Affiliation(s)
- Stanislav Bondarenko
- Department of Joint Pathology, Sytenko Institute of Spine and Joint Pathology, Kharkiv 61124, Ukraine
| | - Volodymyr Filipenko
- Department of Joint Pathology, Sytenko Institute of Spine and Joint Pathology, Kharkiv 61124, Ukraine
| | - Michael Karpinsky
- Department of Biomechanics, Sytenko Institute of Spine and Joint Pathology, Kharkiv 61124, Ukraine
| | - Olena Karpinska
- Department of Biomechanics, Sytenko Institute of Spine and Joint Pathology, Kharkiv 61124, Ukraine
| | - Gennadiy Ivanov
- Department of Experimental Pathology, Sytenko Institute of Spine and Joint Pathology, Kharkiv 61124, Ukraine
| | - Valentyna Maltseva
- Morphology of Connective Tissue Department, Sytenko Institute of Spine and Joint Pathology, Kharkiv 61124, Ukraine
| | - Ahmed Amine Badnaoui
- Department of Joint Pathology, Sytenko Institute of Spine and Joint Pathology, Kharkiv 61124, Ukraine
| | - Ran Schwarzkopf
- Department of Orthopedic Surgery, NYU Langone Orthopedic Hospital, Hospital for Joint Diseases, New York, NY 10003, United States
| |
Collapse
|
17
|
Grzeskowiak RM, Schumacher J, Dhar MS, Harper DP, Mulon PY, Anderson DE. Bone and Cartilage Interfaces With Orthopedic Implants: A Literature Review. Front Surg 2020; 7:601244. [PMID: 33409291 PMCID: PMC7779634 DOI: 10.3389/fsurg.2020.601244] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 11/25/2020] [Indexed: 12/21/2022] Open
Abstract
The interface between a surgical implant and tissue consists of a complex and dynamic environment characterized by mechanical and biological interactions between the implant and surrounding tissue. The implantation process leads to injury which needs to heal over time and the rapidity of this process as well as the property of restored tissue impact directly the strength of the interface. Bleeding is the first and most relevant step of the healing process because blood provides growth factors and cellular material necessary for tissue repair. Integration of the implants placed in poorly vascularized tissue such as articular cartilage is, therefore, more challenging than compared with the implants placed in well-vascularized tissues such as bone. Bleeding is followed by the establishment of a provisional matrix that is gradually transformed into the native tissue. The ultimate goal of implantation is to obtain a complete integration between the implant and tissue resulting in long-term stability. The stability of the implant has been defined as primary (mechanical) and secondary (biological integration) stability. Successful integration of an implant within the tissue depends on both stabilities and is vital for short- and long-term surgical outcomes. Advances in research aim to improve implant integration resulting in enhanced implant and tissue interface. Numerous methods have been employed to improve the process of modifying both stability types. This review provides a comprehensive discussion of current knowledge regarding implant-tissue interfaces within bone and cartilage as well as novel approaches to strengthen the implant-tissue interface. Furthermore, it gives an insight into the current state-of-art biomechanical testing of the stability of the implants. Current knowledge reveals that the design of the implants closely mimicking the native structure is more likely to become well integrated. The literature provides however several other techniques such as coating with a bioactive compound that will stimulate the integration and successful outcome for the patient.
Collapse
Affiliation(s)
- Remigiusz M. Grzeskowiak
- Large Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, United States
| | - Jim Schumacher
- Large Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, United States
| | - Madhu S. Dhar
- Large Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, United States
| | - David P. Harper
- The Center for Renewable Carbon, Institute of Agriculture, University of Tennessee, Knoxville, TN, United States
| | - Pierre-Yves Mulon
- Large Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, United States
| | - David E. Anderson
- Large Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, United States
| |
Collapse
|
18
|
Qian H, Lei T, Lei P, Hu Y. Additively Manufactured Tantalum Implants for Repairing Bone Defects: A Systematic Review. TISSUE ENGINEERING PART B-REVIEWS 2020; 27:166-180. [PMID: 32799765 DOI: 10.1089/ten.teb.2020.0134] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Tantalum has unique advantages as a biomaterial for repairing bone defects due to its outstanding bioactivity, excellent corrosion resistance, and mechanical properties. Ideal implants for bone repair should be of good biocompatibility and bioactivity, as well as ability to simulate the microstructure and mechanical environment of human bone tissues. Additive manufacturing can facilitate freedom of design for the macrostructure/microstructure of bone implants with controlled mechanical properties; thus, this method has great potential. Additively manufactured tantalum implants provide a novel alternative for bone repair and are gaining increasing attention. This systematic review aims to comprehensively summarize the subsistent evidence from physicochemical, cellular, animal, and clinical studies on additively manufactured tantalum implants in repairing bone defects, for the first time. This work may provide researchers an essential grasp on the advances of additively manufactured tantalum implants. Impact statement Tantalum has unique advantages as a biomaterial. Additive manufacturing facilitates design freedom and additively manufactured tantalum is a novel alternative for bone repair. Studies on additively manufactured tantalum progress greatly, while no review summarizing the progresses was published.
Collapse
Affiliation(s)
- Hu Qian
- Department of Orthopedic Surgery, Xiangya Hospital of Central South University, Changsha, China.,Xiangya School of Medicine, Central South University, Changsha, China
| | - Ting Lei
- Department of Orthopedic Surgery, Xiangya Hospital of Central South University, Changsha, China
| | - Pengfei Lei
- Department of Orthopedic Surgery, Xiangya Hospital of Central South University, Changsha, China
| | - Yihe Hu
- Department of Orthopedic Surgery, Xiangya Hospital of Central South University, Changsha, China
| |
Collapse
|
19
|
Histological and Histomorphometrical Evaluation of a New Implant Macrogeometry. A Sheep Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17103477. [PMID: 32429405 PMCID: PMC7277453 DOI: 10.3390/ijerph17103477] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 02/06/2023]
Abstract
Decompression or healing chambers between the threads have been proposed to improve and accelerate the osseointegration process of dental implants. The aim of the present work was to test, in an in vivo sheep study, if healing chambers between the threads could produce a better osseointegration process. Thirty titanium implants (15 conventional design (control) and 15 implants with healing chambers (test)) were inserted in a random fashion in the tibia of 3 sheep. The animals were euthanized after 30 days of healing, and the retrieved specimens treated to obtain thin ground sections. Histological observations showed that the quantity of newly formed bone growing in an apical direction was lower in the control group (1095 µm) when compared to the Test group (1658 µm). This difference was statistically significant. Moreover, a layer of osteogenic matrix was present around the portion of implants immersed in the marrow spaces. This osteogenic tissue was thicker in the test group. In conclusion, the present study confirmed the very good results in implants with healing chambers that presented a higher percentage of new bone formation.
Collapse
|
20
|
The impact of sitagliptin on macrophage polarity and angiogenesis in the osteointegration of titanium implants in type 2 diabetes. Biomed Pharmacother 2020; 126:110078. [PMID: 32172067 DOI: 10.1016/j.biopha.2020.110078] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/27/2020] [Accepted: 03/04/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Clinical evidence indicates that sitagliptin treatment improves bone quality in diabetic patients, but the mechanisms involved remain elusive. Here, we studied the role of angiogenesis with sitagliptin treatment in diabetes-induced poor osteointegration of titanium implants and the underlying mechanisms. METHODS In vitro, Human Umbilical Vein Endothelial Cells (HUVECs) incubated on titanium (Ti) surface were subjected to 1) normal milieu (NM); 2) diabetic milieu (DM); 3) DM + sitagliptin; 4) NM + macrophage; 5) DM + macrophage; or 6) DM + macrophage + sitagliptin. Microphage and HUVECs were cultured alone or co-cultured in a Transwell system. In vivo, DM was induced by high-fat diet and administration of streptozotocin (STZ) in rats. Titanium screws were implanted in the femurs of rats in three groups: Control, DM, Sitagliptin-treated DM. RESULTS In vitro, when cells were incubated alone, DM caused M1 polarization of macrophage, evidenced by the increased iNOS and decreased CD206 expressions, and obvious dysfunctions of HUVECs. The DM-induced injury of endothelial cells were significantly worsened when the two cells were co-cultured. The addition of sitagliptin markedly reversed the changes of macrophage but not of HUVECs in DM when cells were cultured alone. When cells co-cultured, however, both the abnormal macrophage polarization and the endothelial impairment in DM was significantly alleviated by sitagliptin. In vivo, compared with normal animals, DM animals showed imbalanced M1/M2 polarization, angiogenesis inhibition and poor bone formation on the bone-implant interface (BII), which were significantly ameliorated by sitagliptin treatment. CONCLUSION Our results demonstrate macrophage polarization imbalance as a crucial mechanism underlying the impaired angiogenesis and bone healing in diabetes, and provide sitagliptin as a promising novel drug for biomaterial-engineering to improve the osteointegration of titanium implants in diabetic patients.
Collapse
|
21
|
Abstract
Surface modification of orthopedic and dental implants has been demonstrated to be an effective strategy to accelerate bone healing at early implantation times. Among the different alternatives, coating implants with a layer of hydroxyapatite (HAp) is one of the most used techniques, due to its excellent biocompatibility and osteoconductive behavior. The composition and crystalline structure of HAp allow for numerous ionic substitutions that provide added value, such as antibiotic properties or osteoinduction. In this article, we will review and critically analyze the most important advances in the field of substituted hydroxyapatite coatings. In recent years substituted HAp coatings have been deposited not only on orthopedic prostheses and dental implants, but also on macroporous scaffolds, thus expanding their applications towards bone regeneration therapies. Besides, the capability of substituted HAps to immobilize proteins and growth factors by non-covalent interactions has opened new possibilities for preparing hybrid coatings that foster bone healing processes. Finally, the most important in vivo outcomes will be discussed to understand the prospects of substituted HAp coatings from a clinical point of view.
Collapse
Affiliation(s)
- Daniel Arcos
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria del Hospital 12 de Octubre i + 12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain. and CIBER de Bioingeniería Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - María Vallet-Regí
- Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria del Hospital 12 de Octubre i + 12, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain. and CIBER de Bioingeniería Biomateriales y Nanomedicina (CIBER-BBN), Spain
| |
Collapse
|
22
|
Shaheen MY, Basudan AM, de Vries RB, van den Beucken JJJP, Jansen JA, Alghamdi HS. Bone Regeneration Using Antiosteoporotic Drugs in Adjunction with Bone Grafting: A Meta-Analysis. TISSUE ENGINEERING PART B-REVIEWS 2019; 25:500-509. [PMID: 31411119 DOI: 10.1089/ten.teb.2019.0132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The aim of this review was to systematically assess bone regeneration by using antiosteoporotic drugs in adjunction with bone grafting compared with controls (bone grafting without the administration of antiosteoporotic drugs). The review also evaluated statistical differences in the effect between systemic and local routes of drugs. Also, the effect of type of drugs (anticatabolic vs. anabolic) was subevaluated. PubMed and EMBASE (via OvidSP) resulted in inclusion of 60 animal studies. The studies were assessed for reporting quality and risk of bias. Outcome data from selected studies were categorized as either experimental (bone grafting with the administration of antiosteoporotic drugs) or control. Meta-analysis of selected studies was done for these outcomes: histomorphometrical bone area (BA%) and micro-CT bone volume (BV%). In this review, several animal models (52 healthy, 6 osteoporotic, and 2 both conditions) were subjected to examine the effect of antiosteoporotic drugs on bone grafting, with a predominant use of rodent species. Assessment indicates poor reporting quality and unclear risk of bias in the majority of studies. Random-effects meta-analysis revealed a significant increase in overall BA% (mean difference [MD]: 2.6, confidence interval [CI]: 2.25 to 2.92) and BV% (MD: 0.12, CI: 0.05 to 0.19) due to osteoporotic drug treatment compared with controls. For subgroups, both routes of antiosteoporotic drug administration showed similar effects on BA%. In contrast, systemic antiosteoporotic drug administration led to significantly higher BV% (MD: 6.75, CI: 5.30 to 8.19) compared with local administration (MD: 0.02, CI: -0.03 to 0.08). Further, administration of anabolic drugs significantly increased BA% (MD: 5.75, CI: 4.62 to 6.87) compared with anticatabolic drugs (MD: 1.86, CI: 1.47 to 2.26). In conclusion, both histomorphometrical and micro-CT scan analysis indicated an overall effect of using the antiosteoporotic drugs toward bone regeneration in adjunction with grafting. However, not all studies showed a positive effect and the present results need to be applied with care, as the included papers showed experimental heterogeneity for animal models. Further (pre)clinical research is warranted to explore whether drug-based strategies can be an effective adjunctive with bone grafting. Impact Statement The aim of this meta-analysis was to assess whether antiosteoporotic drugs can promote bone regeneration in adjunction with bone grafting by using preclinical animal models. Although the majority of included studies indicated poor reporting quality and unclear risk of bias, an overall positive effect of the antiosteoporotic drugs toward bone regeneration related to bone grafts can be highlighted.
Collapse
Affiliation(s)
- Marwa Y Shaheen
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Amani M Basudan
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Rob B de Vries
- Regenerative Biomaterials, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jeroen J J P van den Beucken
- Systematic Review Centre for Laboratory Animal Experimentation (SYRCLE), Department for Health Evidence (Section HTA), Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - John A Jansen
- Systematic Review Centre for Laboratory Animal Experimentation (SYRCLE), Department for Health Evidence (Section HTA), Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Hamdan S Alghamdi
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.,Systematic Review Centre for Laboratory Animal Experimentation (SYRCLE), Department for Health Evidence (Section HTA), Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| |
Collapse
|
23
|
Functionalization of Ceramic Coatings for Enhancing Integration in Osteoporotic Bone: A Systematic Review. COATINGS 2019. [DOI: 10.3390/coatings9050312] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background: The success of reconstructive orthopaedic surgery strongly depends on the mechanical and biological integration between the prosthesis and the host bone tissue. Progressive population ageing with increased frequency of altered bone metabolism conditions requires new strategies for ensuring an early implant fixation and long-term stability. Ceramic materials and ceramic-based coatings, owing to the release of calcium phosphate and to the precipitation of a biological apatite at the bone-implant interface, are able to promote a strong bonding between the host bone and the implant. Methods: The aim of the present systematic review is the analysis of the existing literature on the functionalization strategies for improving the implant osteointegration in osteoporotic bone and their relative translation into the clinical practice. The review process, conducted on two electronic databases, identified 47 eligible preclinical studies and 5 clinical trials. Results: Preclinical data analysis showed that functionalization with both organic and inorganic molecules usually improves osseointegration in the osteoporotic condition, assessed mainly in rodent models. Clinical studies, mainly retrospective, have tested no functionalization strategies. Registered trademarks materials have been investigated and there is lack of information about the micro- or nano- topography of ceramics. Conclusions: Ceramic materials/coatings functionalization obtained promising results in improving implant osseointegration even in osteoporotic conditions but preclinical evidence has not been fully translated to clinical applications.
Collapse
|
24
|
Kim JW, Kim HY, Kim SY, Kim SJ. Impaired osseointegration of dental implants associated with orthognathic surgery: Possible regional acceleratory phenomenon. Clin Implant Dent Relat Res 2019; 21:531-537. [PMID: 30884115 DOI: 10.1111/cid.12745] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/16/2019] [Accepted: 02/08/2019] [Indexed: 11/27/2022]
Abstract
BACKGROUND Regional acceleratory phenomenon (RAP) is demonstrated to decrease regional bone mineral density and accelerate bone turnover. Hypothesizing that RAP can negatively affect the osseointegration of biomaterials, this study aimed to investigate the possible influence of the RAP on dental implant osseointegration. MATERIALS AND METHODS Orthognathic surgery, one of the major surgeries on oral and maxillofacial region was set as intervention for RAP. Considering that RAP exerts its physiologic effects until 4 months after noxious stimuli, patients were classified according to the time interval between orthognathic surgery and dental implant installation; group I was designated to patients who had implant installation within 4 months from orthognathic surgery. Group II were those with installation after 4-12 months and group III was longer than 12 months. Radiographic and clinical evaluations of dental implants including peri-implant marginal bone changes (MBR), implant stability, cumulative survival rates were analyzed. RESULTS A total of 54 patients with 106 implants (mean follow-up of 72.6 months) were included in the study. MBR was significantly higher in group I (2.62 ± 0.91 mm) and II (2.25 ± 0.95 mm) compared to that of group III (0.94 ± 0.90 mm) at last follow up (P < 0.05) and this group difference over time was also significant (P < 0.001). Compared to group III, groups I and II exhibited lower ISQ values and higher biological complications including peri-implantitis and peri-implant gingivitis (P < 0.05). Group I showed significantly low-cumulative survival rate (89.2%; implant-level) compared to groups II and III. CONCLUSIONS In this study, impaired osseointegration of dental implants was demonstrated associated with orthognathic surgery. Micro-environmental changes of hard tissue induced by major surgery on the jaw showed deteriorating effects on integrity of biomaterial osseointegration. Special considerations should be addressed for ideal treatment results and prognosis.
Collapse
Affiliation(s)
- Jin-Woo Kim
- Department of Oral and Maxillofacial Surgery, Ewha Womans University Medical Center, Seoul, South Korea.,Department of Oral and Maxillofacial Surgery, Graduate School of Clinical Dentistry, Ewha Womans University, Seoul, South Korea
| | - Heon-Young Kim
- Department of Oral and Maxillofacial Surgery, Ewha Womans University Medical Center, Seoul, South Korea
| | - Seon-Yeong Kim
- Department of Oral and Maxillofacial Surgery, Graduate School of Clinical Dentistry, Ewha Womans University, Seoul, South Korea
| | - Sun-Jong Kim
- Department of Oral and Maxillofacial Surgery, Ewha Womans University Medical Center, Seoul, South Korea.,Department of Oral and Maxillofacial Surgery, Graduate School of Clinical Dentistry, Ewha Womans University, Seoul, South Korea
| |
Collapse
|
25
|
Izquierdo-Barba I, Santos-Ruiz L, Becerra J, Feito M, Fernández-Villa D, Serrano M, Díaz-Güemes I, Fernández-Tomé B, Enciso S, Sánchez-Margallo F, Monopoli D, Afonso H, Portolés M, Arcos D, Vallet-Regí M. Synergistic effect of Si-hydroxyapatite coating and VEGF adsorption on Ti6Al4V-ELI scaffolds for bone regeneration in an osteoporotic bone environment. Acta Biomater 2019; 83:456-466. [PMID: 30445158 DOI: 10.1016/j.actbio.2018.11.017] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 11/07/2018] [Accepted: 11/12/2018] [Indexed: 01/14/2023]
Abstract
The osteogenic and angiogenic responses to metal macroporous scaffolds coated with silicon substituted hydroxyapatite (SiHA) and decorated with vascular endothelial growth factor (VEGF) have been evaluated in vitro and in vivo. Ti6Al4V-ELI scaffolds were prepared by electron beam melting and subsequently coated with Ca10(PO4)5.6(SiO4)0.4(OH)1.6 following a dip coating method. In vitro studies demonstrated that SiHA stimulates the proliferation of MC3T3-E1 pre-osteoblastic cells, whereas the adsorption of VEGF stimulates the proliferation of EC2 mature endothelial cells. In vivo studies were carried out in an osteoporotic sheep model, evidencing that only the simultaneous presence of both components led to a significant increase of new tissue formation in osteoporotic bone. STATEMENT OF SIGNIFICANCE: Reconstruction of bones after severe trauma or tumors extirpation is one of the most challenging tasks in the field of orthopedic surgery. This scenario is even more complicated in the case of osteoporotic patients, since their bone regeneration capability is decreased. In this work we present a porous implant that promotes bone regeneration even in osteoporotic bone. By coating the implant with osteogenic bioceramics such as silicon substituted hydroxyapatite and subsequent adsorption of vascular endothelial growth factor, these implants stimulate the bone ingrowth when they are implanted in osteoporotic sheep.
Collapse
|
26
|
Guo Y, Xie K, Jiang W, Wang L, Li G, Zhao S, Wu W, Hao Y. In Vitro and in Vivo Study of 3D-Printed Porous Tantalum Scaffolds for Repairing Bone Defects. ACS Biomater Sci Eng 2018; 5:1123-1133. [PMID: 33405802 DOI: 10.1021/acsbiomaterials.8b01094] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yu Guo
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 200011 Shanghai, China
| | - Kai Xie
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 200011 Shanghai, China
| | - Wenbo Jiang
- Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 200011 Shanghai, China
| | - Lei Wang
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 200011 Shanghai, China
| | - Guoyuan Li
- Department of Orthopaedic Surgery, The First Affiliated Hospital of USTC, Department of Orthopaedic Surgery, Division of Life Sciences and Medicine, University of Science and Technology of China, 230001 Hefei, China
| | - Shuang Zhao
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 200011 Shanghai, China
| | - Wen Wu
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 200011 Shanghai, China
| | - Yongqiang Hao
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 200011 Shanghai, China
- Clinical and Translational Research Center for 3D Printing Technology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, 200011 Shanghai, China
| |
Collapse
|
27
|
Hefni EK, Bencharit S, Kim SJ, Byrd KM, Moreli T, Nociti FH, Offenbacher S, Barros SP. Transcriptomic profiling of tantalum metal implant osseointegration in osteopenic patients. BDJ Open 2018; 4:17042. [PMID: 30479835 PMCID: PMC6251902 DOI: 10.1038/s41405-018-0004-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 07/16/2018] [Accepted: 07/18/2018] [Indexed: 12/02/2022] Open
Abstract
OBJECTIVES The long-term success of dental implants is established by literature. Although clinically well defined, the complex genetic pathways underlying osseointegration have not yet been fully elucidated. Furthermore, patients with osteopenia/osteoporosis are considered to present as higher risk for implant failure. Porous tantalum trabecular metal (PTTM), an open-cell porous biomaterial, is suggested to present enhanced biocompatibility and osteoconductivity. The goal of this study was to evaluate the expression patterns of a panel of genes closely associated with osteogenesis and wound healing in osteopenic patients receiving either traditional titanium (Ti) or PTTM cylinders to assess the pathway of genes activation in the early phases of osseointegration. MATERIAL AND METHODS Implant cylinders made of Ti and PTTM were placed in osteopenic volunteers. At 2- and 4 weeks of healing, one Ti and one PTTM cylinder were removed from each subject for RT-PCR analysis using osteogenesis PCR array. RESULTS Compared to Ti, PTTM-associated bone displayed upregulation of bone matrix proteins, BMP/TGF tisuperfamily, soluble ligand and integrin receptors, growth factors, and collagen genes at one or both time points. Histologically, PTTM implants displayed more robust osteogenesis deposition and maturity when compared to Ti implants from the same patient. CONCLUSIONS Our results indicate that PTTM properties could induce an earlier activation of genes associated with osteogenesis in osteopenic patients suggesting that PTTM implants may attenuate the relative risk of placing dental implants in this population.
Collapse
Affiliation(s)
- E. K. Hefni
- Department of Periodontology, School of Dentistry, University of North Carolina, Chapel Hill, NC USA
| | - S. Bencharit
- Department of General Practice, School of Dentistry, Virginia Commonwealth University, Richmond, VA USA
| | - S. J. Kim
- Department of Periodontology, School of Dentistry, University of North Carolina, Chapel Hill, NC USA
| | - K. M. Byrd
- Department of Periodontology, School of Dentistry, University of North Carolina, Chapel Hill, NC USA
| | - T. Moreli
- Department of Periodontology, School of Dentistry, University of North Carolina, Chapel Hill, NC USA
| | - F. H. Nociti
- Department of Periodontology, School of Dentistry, State University of Campinas, Campinas, Brazil
| | - S. Offenbacher
- Department of Periodontology, School of Dentistry, University of North Carolina, Chapel Hill, NC USA
| | - S. P. Barros
- Department of Periodontology, School of Dentistry, University of North Carolina, Chapel Hill, NC USA
| |
Collapse
|
28
|
Bondarenko S, Dedukh N, Filipenko V, Akonjom M, Badnaoui AA, Schwarzkopf R. Comparative analysis of osseointegration in various types of acetabular implant materials. Hip Int 2018; 28:622-628. [PMID: 29742946 DOI: 10.1177/1120700018759314] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND There is a lack of comparative data on osseointegration (BIC) of acetabular cup surfaces in hip arthroplasty in both normal bone mineral density and in conditions of osteoporosis. AIM To compare osseointegration of acetabular implants with various types of surfaces in an animal model with normal and osteoporotic bone tissue. MATERIAL AND METHODS The study was performed on 60 rats. To simulate osteoporosis ovariectomy was performed in 30 animals. Thirty healthy rats served as controls. In standardised defects of the distal metadiaphysis of the femur we implanted: porous tantalum Trabecular Metal (A), Trabecular Titanium (B), Titanium with Gription coating (C), Stiktite (D), and Tritanum (E). Bone apposition (osseointegration) was defined as all areas of direct "bone-to-implant contact" (BIC). RESULTS No qualitative morphological differences in the evaluation of BIC around different implant types was seen in normal rats and rats with osteoporosis. Connective tissue areas around implants were larger in rats with osteoporosis. Morphometric studies showed that the highest BIC were seen in implants A and B, both in healthy animals ([72.00 ± 3.48]% and [67.46 ± 1.69]%) and ones with osteoporosis ([59.19 ± 2.10]% and [53.36 ± 2.57]%). BIC was (60.10 ± 2.05)%, (60.26 ± 2.36)%, and (61.78 ± 2.27)% around implants C, D and E in healthy rats, respectively. BIC in osteoporosis was (45.39 ± 2.37)%, (47.81 ± 2.41)% and (42.10 ± 1.44)%, respectively. CONCLUSION Our study showed that the evaluated implants have good BIC features. Furthermore, based on histomorthometry and histology, Porous tantalum Trabecular Metal (A) and Trabecular Titanium (B) implants exhibit higher BIC with bone tissue.
Collapse
Affiliation(s)
- Stanislav Bondarenko
- 1 Sytenko Institute of Spine and Joint Pathology National Academy of Medical Science of Ukraine, Kharkiv, Ukraine
| | - Ninel Dedukh
- 1 Sytenko Institute of Spine and Joint Pathology National Academy of Medical Science of Ukraine, Kharkiv, Ukraine
| | - Volodymyr Filipenko
- 1 Sytenko Institute of Spine and Joint Pathology National Academy of Medical Science of Ukraine, Kharkiv, Ukraine
| | - Mandus Akonjom
- 1 Sytenko Institute of Spine and Joint Pathology National Academy of Medical Science of Ukraine, Kharkiv, Ukraine
| | - Ahmed Amine Badnaoui
- 1 Sytenko Institute of Spine and Joint Pathology National Academy of Medical Science of Ukraine, Kharkiv, Ukraine
| | - Ran Schwarzkopf
- 2 NYU Langone Medical Center, Hospital for Joint Diseases, New York, NY
| |
Collapse
|
29
|
Basudan AM, Shaheen MY, de Vries RB, van den Beucken JJJP, Jansen JA, Alghamdi HS. Antiosteoporotic Drugs to Promote Bone Regeneration Related to Titanium Implants: A Systematic Review and Meta-Analysis. TISSUE ENGINEERING PART B-REVIEWS 2018; 25:89-99. [PMID: 30191772 DOI: 10.1089/ten.teb.2018.0120] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
IMPACT STATEMENT This meta-analysis was to investigate literature on the administration of antiosteoporotic drugs as an effective adjunct therapy for implant osseointegration using in vivo animal models.
Collapse
Affiliation(s)
- Amani M Basudan
- 1 Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Marwa Y Shaheen
- 1 Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | - Rob B de Vries
- 2 Systematic Review Center for Laboratory Animal Experimentation, Department for Health Evidence (section HTA), Radboudumc, Nijmegen, The Netherlands
| | | | - John A Jansen
- 3 Department of Biomaterials, Radboudumc, Nijmegen, The Netherlands
| | - Hamdan S Alghamdi
- 1 Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.,3 Department of Biomaterials, Radboudumc, Nijmegen, The Netherlands
| |
Collapse
|
30
|
Kim JW, Lee H, Lim HK, Kim JW, Byun SH, Choi YJ, Lee UL. Orthognathic surgery Deteriorates the osseointegration of dental implants: A propensity-matched multicentre cohort study. J Oral Rehabil 2018; 45:967-973. [PMID: 30125391 DOI: 10.1111/joor.12705] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 07/24/2018] [Accepted: 08/15/2018] [Indexed: 12/22/2022]
Abstract
This study aimed to investigate the possible influence of the regional acceleratory phenomenon (RAP) on dental implant osseointegration. Orthognathic surgery was set as an intervention for RAP, and a multicentre cohort study of two groups was undertaken. Group O included patients with single implant placement at least 4 months after orthognathic surgery and functional loading for more than 1 year, while controls (Group C) were without any major surgery. Clinical and radiographic assessments of implants, including changes in marginal bone levels, were analysed at baseline, 6- and 12-month follow-up. Bivariate analysis of two groups with propensity score matching was performed. After propensity score matching, all 10 confounding variables had acceptable standardised difference scores (<20%), indicating that the matching procedure had efficiently balanced the two groups. Following the propensity score adjustment, the marginal bone loss was significantly higher in Group O than the control at 6 months (1.66 ± 1.05 mm vs 0.59 ± 0.64 mm, P < 0.001) and 12 months (2.30 ± 1.27 mm vs 0.82 ± 0.78 mm, P < 0.001). Compared to Group C, subjects in Group O had a higher incidence of peri-implant mucositis and implantitis (11.8% vs 1.5%, P = 0.033). Impaired osseointegration of dental implants was associated with orthognathic surgery. Special considerations for peri-implant soft and hard tissue stability should be addressed to obtain ideal treatment results and prognosis for patients who have had prior orthognathic surgery.
Collapse
Affiliation(s)
- Jin-Woo Kim
- Department of Oral and Maxillofacial Surgery, Ewha Womans University Medical Center, Seoul, Korea.,Research Society of Gangnam Oral and Maxillofacial Surgeons, Seoul, Korea
| | - Ho Lee
- Research Society of Gangnam Oral and Maxillofacial Surgeons, Seoul, Korea.,Department of Oral and Maxillofacial Surgery, Section of Dentistry, Seoul Metropolitan Government - Seoul National University Boramae Medical Center, Seoul, Korea
| | - Ho-Kyung Lim
- Research Society of Gangnam Oral and Maxillofacial Surgeons, Seoul, Korea.,Department of Oral and Maxillofacial Surgery, Korea University Medical Center, Guro Hospital, Seoul, Korea
| | - Ju-Won Kim
- Research Society of Gangnam Oral and Maxillofacial Surgeons, Seoul, Korea.,Department of Oral and Maxillofacial Surgery, Pyeong-chon Sacred Heart Hospital, Hallym University Medical Center, Kyonggi-do, Korea
| | - Soo-Hwan Byun
- Research Society of Gangnam Oral and Maxillofacial Surgeons, Seoul, Korea.,Department of Oral and Maxillofacial Surgery, Dongtan Sacred Heart Hospital, Hallym University Medical Center, Kyonggi-do, Korea
| | - Young-Jun Choi
- Department of Oral and Maxillofacial Surgery, Chung-Ang University College of Medicine, Seoul, Korea
| | - Ui-Lyong Lee
- Research Society of Gangnam Oral and Maxillofacial Surgeons, Seoul, Korea.,Department of Oral and Maxillofacial Surgery, Chung-Ang University Hospital, Seoul, Korea
| |
Collapse
|
31
|
Cheong VS, Fromme P, Mumith A, Coathup MJ, Blunn GW. Novel adaptive finite element algorithms to predict bone ingrowth in additive manufactured porous implants. J Mech Behav Biomed Mater 2018; 87:230-239. [PMID: 30086415 DOI: 10.1016/j.jmbbm.2018.07.019] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 06/04/2018] [Accepted: 07/10/2018] [Indexed: 11/30/2022]
Abstract
Bone loss caused by stress shielding of metallic implants is a concern, as it can potentially lead to long-term implant failure. Surface coating and reducing structural stiffness of implants are two ways to improve bone ingrowth and osteointegration. Additive manufacturing, through selective laser sintering (SLS) or electron beam melting (EBM) of metallic alloys, can produce porous implants with bone ingrowth regions that enhance osteointegration and improve clinical outcomes. Histology of porous Ti6Al4V plugs of two pore sizes with and without electrochemically deposited hydroxyapatite coating, implanted in ovine condyles, showed that bone formation did not penetrate deep into the porous structure, whilst significantly increased bone growth along coated pore surfaces (osteointegration) was observed. Finite Element simulations, combining new algorithms to model bone ingrowth and the effect of surface modification on osteoconduction, were verified with the histology results. The results showed stress shielding of porous implants made from conventional titanium alloy due to material stiffness and implant geometry, limiting ingrowth and osteointegration. Simulations for reduced implant material stiffness predicted increased bone ingrowth. For low modulus Titanium-tantalum alloy (Ti-70%Ta), reduced stress shielding and enhanced bone ingrowth into the porous implant was found, leading to improved mechanical interlock. Algorithms predicted osteoconductive coating to promote both osteointegration and bone ingrowth into the inner pores when they were coated. These new Finite Element algorithms show that using implant materials with lower elastic modulus, osteoconductive coatings or improved implant design could lead to increased bone remodelling that optimises tissue regeneration, fulfilling the potential of enhanced porosity and complex implant designs made possible by additive layer manufacturing techniques.
Collapse
Affiliation(s)
- Vee San Cheong
- John Scales Centre for Biomedical Engineering, Institute of Orthopaedics and Musculoskeletal Science, University College London, Royal National Orthopaedics Hospital, Stanmore HA7 4LP, UK; Department of Mechanical Engineering, University College London, London WC1E 7JE, UK.
| | - Paul Fromme
- Department of Mechanical Engineering, University College London, London WC1E 7JE, UK
| | - Aadil Mumith
- John Scales Centre for Biomedical Engineering, Institute of Orthopaedics and Musculoskeletal Science, University College London, Royal National Orthopaedics Hospital, Stanmore HA7 4LP, UK
| | - Melanie J Coathup
- John Scales Centre for Biomedical Engineering, Institute of Orthopaedics and Musculoskeletal Science, University College London, Royal National Orthopaedics Hospital, Stanmore HA7 4LP, UK
| | - Gordon W Blunn
- John Scales Centre for Biomedical Engineering, Institute of Orthopaedics and Musculoskeletal Science, University College London, Royal National Orthopaedics Hospital, Stanmore HA7 4LP, UK; School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth PO1 2DT, UK
| |
Collapse
|
32
|
Borsari V, Fini M, Giavaresi G, Rimondini L, Chiesa R, Chiusoli L, Giardino R. Sandblasted Titanium Osteointegration in Young, Aged and Ovariectomized Sheep. Int J Artif Organs 2018; 30:163-72. [PMID: 17377911 DOI: 10.1177/039139880703000211] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
To evaluate how aging and estrogen deficiency influence the success rate of Sandblasted Titanium (Ti/SA) implants, the osteointegration of Ti/SA rods was studied in the cortical and trabecular bone of 5 young, 5 aged and 5 ovariectomized (OVX) sheep. The characterization of the host bone by transiliac biopsies of the iliac crest showed a progressive rarefaction of trabecular bone in aged and OVX animals when compared to young ones. A significant reduction, both in cortical and trabecular bone, of the osteointegration rate of Ti/SA rods in the presence of estrogen deficiency compared to young animals was observed, while only a minor reduction was observed in aged animals. These results were confirmed by the pushout test in cortical bone. Bone quality affected the biological response of bone to Ti/SA implants in both trabecular and cortical bone; consequently, strategies to maximize the bone osteogenic properties of osteoporotic patients should be adopted.
Collapse
Affiliation(s)
- V Borsari
- Experimental Surgery Department, Research Institute Codivilla-Putti, Rizzoli Orthopedic Institute, Bologna, Italy
| | | | | | | | | | | | | |
Collapse
|
33
|
Silva KC, Zenóbio EG, Souza PEA, Soares RV, Cosso MG, Horta MCR. Assessment of Dental Implant Stability in Areas Previously Submitted to Maxillary Sinus Elevation. J ORAL IMPLANTOL 2018; 44:109-113. [PMID: 29303412 DOI: 10.1563/aaid-joi-d-17-00094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study aimed to compare the primary and secondary stability, measured by resonance frequency analysis (RFA), in implants of different lengths installed in areas submitted to maxillary sinus lift. Correlation between RFA and implant insertion torque was also assessed. Twenty implants of 9 and 11 mm were inserted in areas submitted to maxillary sinus lift. The insertion torque was measured by the Bien Air motor. Osstell, through RFA, determined the implant stability quotient (ISQ) 2 times: the day of implant installation (T1) and 90 days after implant installation (T2). No differences were observed in the ISQ between T1 and T2 when the 20 implants were grouped, nor when the 9 mm implants were evaluated separately. In contrast, when the 11 mm values were evaluated separately, the ISQ was significantly higher in T2 than in T1 ( P < .05). In T1, 9 mm implants had a higher ISQ than 11 mm ones ( P < .05), whereas in T2, the implants of 11 mm showed a higher ISQ than did the 9 mm implants ( P < .05). There was no difference in insertion torque between 9 and 11 mm implants ( P > .05), nor was there a correlation between ISQ and insertion torque ( P > .05). In conclusion, longer implants (11 mm) presented a significant increase in ISQ values during the healing period when installed in areas previously submitted to maxillary sinus lift. This phenomenon was not observed for shorter implants (9 mm). Finally, no correlation was observed between ISQ and insertion torque.
Collapse
Affiliation(s)
- Karine Câmara Silva
- Graduate Program in Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Elton Gonçalves Zenóbio
- Graduate Program in Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Paulo Eduardo Alencar Souza
- Graduate Program in Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Rodrigo Villamarim Soares
- Graduate Program in Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Maurício Greco Cosso
- Graduate Program in Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | |
Collapse
|
34
|
Melancon D, Bagheri ZS, Johnston RB, Liu L, Tanzer M, Pasini D. Mechanical characterization of structurally porous biomaterials built via additive manufacturing: experiments, predictive models, and design maps for load-bearing bone replacement implants. Acta Biomater 2017; 63:350-368. [PMID: 28927929 DOI: 10.1016/j.actbio.2017.09.013] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 08/30/2017] [Accepted: 09/12/2017] [Indexed: 11/18/2022]
Abstract
Porous biomaterials can be additively manufactured with micro-architecture tailored to satisfy the stringent mechano-biological requirements imposed by bone replacement implants. In a previous investigation, we introduced structurally porous biomaterials, featuring strength five times stronger than commercially available porous materials, and confirmed their bone ingrowth capability in an in vivo canine model. While encouraging, the manufactured biomaterials showed geometric mismatches between their internal porous architecture and that of its as-designed counterpart, as well as discrepancies between predicted and tested mechanical properties, issues not fully elucidated. In this work, we propose a systematic approach integrating computed tomography, mechanical testing, and statistical analysis of geometric imperfections to generate statistical based numerical models of high-strength additively manufactured porous biomaterials. The method is used to develop morphology and mechanical maps that illustrate the role played by pore size, porosity, strut thickness, and topology on the relations governing their elastic modulus and compressive yield strength. Overall, there are mismatches between the mechanical properties of ideal-geometry models and as-manufactured porous biomaterials with average errors of 49% and 41% respectively for compressive elastic modulus and yield strength. The proposed methodology gives more accurate predictions for the compressive stiffness and the compressive strength properties with a reduction of the average error to 11% and 7.6%. The implications of the results and the methodology here introduced are discussed in the relevant biomechanical and clinical context, with insight that highlights promises and limitations of additively manufactured porous biomaterials for load-bearing bone replacement implants. STATEMENT OF SIGNIFICANCE In this work, we perform mechanical characterization of load-bearing porous biomaterials for bone replacement over their entire design space. Results capture the shift in geometry and mechanical properties between as-designed and as-manufactured biomaterials induced by additive manufacturing. Characterization of this shift is crucial to ensure appropriate manufacturing of bone replacement implants that enable biological fixation through bone ingrowth as well as mechanical property harmonization with the native bone tissue. In addition, we propose a method to include manufacturing imperfections in the numerical models that can reduce the discrepancy between predicted and tested properties. The results give insight into the use of structurally porous biomaterials for the design and additive fabrication of load-bearing implants for bone replacement.
Collapse
Affiliation(s)
- D Melancon
- Mechanical Engineering Department, McGill University, Montreal, Quebec H3G 1A4, Canada
| | - Z S Bagheri
- Mechanical Engineering Department, McGill University, Montreal, Quebec H3G 1A4, Canada
| | - R B Johnston
- Mechanical Engineering Department, McGill University, Montreal, Quebec H3G 1A4, Canada
| | - L Liu
- Mechanical Engineering Department, McGill University, Montreal, Quebec H3G 1A4, Canada
| | - M Tanzer
- Division of Orthopaedics, Department of Surgery, McGill University, Montreal, Quebec H3G 1A4, Canada
| | - D Pasini
- Mechanical Engineering Department, McGill University, Montreal, Quebec H3G 1A4, Canada.
| |
Collapse
|
35
|
Xing H, Wang X, Xiao S, Zhang G, Li M, Wang P, Shi Q, Qiao P, E L, Liu H. Osseointegration of layer-by-layer polyelectrolyte multilayers loaded with IGF1 and coated on titanium implant under osteoporotic condition. Int J Nanomedicine 2017; 12:7709-7720. [PMID: 29089765 PMCID: PMC5656347 DOI: 10.2147/ijn.s148001] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Purpose Titanium implant is a widely used method for dental prosthesis restoration. Nevertheless, in patients with systemic diseases, including osteoporosis, diabetes, and cancer, the success rate of the implant is greatly reduced. This study investigates a new implant material loaded with insulin-like growth factor 1 (IGF1), which could potentially improve the implant success rate, accelerate the occurrence of osseointegration, and provide a new strategy for implant treatment in osteoporotic patients. Materials and methods Biofunctionalized polyelectrolyte multilayers (PEMs) with polyethylenimine as the excitation layer and gelatin/chitosan loaded with IGF1 were prepared on the surface of titanium implant by layer-by-layer self-assembly technique. The physical and chemical properties of the biofunctionalized PEMs, the biological characteristics of bone marrow mesenchymal stem cells (BMMSCs), and bone implant contact correlation test indexes were detected and analyzed in vitro and in vivo using osteoporosis rat model. Results PEMs coatings loaded with IGF1 (TNS-PEM-IGF1-100) implant promoted the early stage of BMMSCs adhesion. Under the action of body fluids, the active coating showed sustained release of growth factors, which in turn promoted the proliferation and differentiation of BMMSCs and the extracellular matrix. At 8 weeks from implant surgery, the new bone around the implants was examined using micro-CT and acid fuchsin/methylene blue staining. The new bone formation increased with time in each group, while the TNS-PEM-IGF1-100 group showed the highest thickness and continuity. Conclusion TNS-PEM-IGF1-100 new implants can promote osseointegration in osteoporotic conditions both in vivo and in vitro and provide a new strategy for implant repair in osteoporotic patients.
Collapse
Affiliation(s)
- Helin Xing
- Institute of Stomatology, Chinese PLA General Hospital, Beijing
| | - Xing Wang
- Hospital of Stomatology, Shanxi Medical University, Taiyuan
| | - Saisong Xiao
- Department of Anesthesia, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Guilan Zhang
- Institute of Stomatology, Chinese PLA General Hospital, Beijing
| | - Meng Li
- Institute of Stomatology, Chinese PLA General Hospital, Beijing
| | - Peihuan Wang
- Institute of Stomatology, Chinese PLA General Hospital, Beijing
| | - Quan Shi
- Institute of Stomatology, Chinese PLA General Hospital, Beijing
| | - Pengyan Qiao
- Institute of Stomatology, Chinese PLA General Hospital, Beijing
| | - Lingling E
- Institute of Stomatology, Chinese PLA General Hospital, Beijing
| | - Hongchen Liu
- Institute of Stomatology, Chinese PLA General Hospital, Beijing
| |
Collapse
|
36
|
de la Rosa Castolo G, Guevara Perez SV, Arnoux PJ, Badih L, Bonnet F, Behr M. Mechanical strength and fracture point of a dental implant under certification conditions: A numerical approach by finite element analysis. J Prosthet Dent 2017; 119:611-619. [PMID: 28720340 DOI: 10.1016/j.prosdent.2017.04.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 04/20/2017] [Accepted: 04/20/2017] [Indexed: 10/19/2022]
Abstract
STATEMENT OF PROBLEM Implant prosthodontics provides high-quality outcomes thanks to recent technological developments and certification procedures such as International Organization for Standardization (ISO) 14801. However, these certification tests are costly, and the result is highly uncertain as the influence of design variables (materials and structure) is still unknown. The design process could be significantly improved if the influence of design parameters were identified. PURPOSE The purpose of this in vitro study was to use finite element analysis (FEA) to assess the influence of design parameters on the mechanical performance of an implant in regard to testing conditions of ISO 14801 standard. MATERIAL AND METHODS An endosseous dental implant was loaded under ISO 14801 testing conditions by numerical simulation, with 4 parameters evaluated under the following conditions: conditions of the contact surface area between the implant and the loading tool, length of the fixation screw, implant embedding depth, and material used for implant stiffness. FEA was used to compare the force that needed to reach the implant's yield and fracture strength. RESULTS A dental implant's fracture point can be increased by 41% by improving the contact surface area, by 20% depending on the type of material, by 4% depending on the length of the fixation screw, and by 1.4% by changing the implant embedding depth. CONCLUSIONS FEA made it possible to evaluate 4 performance parameters of a dental implant under ISO 14801 conditions. Under these conditions, the contact surface area was found to be the major parameter influencing implant performance. This observation was validated experimentally in a fatigue test under ISO 14801 conditions.
Collapse
Affiliation(s)
- Guillermo de la Rosa Castolo
- Doctoral student, The French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR) Laboratory of Applied Biomechanics, Aix-Marseille University, Marseille, France; and Research engineer, Glad Medical SAS, Salon-de-Provence, France.
| | - Sonia V Guevara Perez
- Doctoral student, The French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR) Laboratory of Applied Biomechanics, Aix-Marseille University, Marseille, France; and Associate Professor, Department of Oral Health, National University of Colombia, Bogota, Colombia
| | - Pierre-Jean Arnoux
- Researcher, The French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR) Laboratory of Applied Biomechanics, Aix-Marseille University, Marseille, France
| | - Laurent Badih
- General Director, Glad Medical SAS, Salon-de-Provence, France
| | | | - Michel Behr
- Researcher, The French Institute of Science and Technology for Transport, Development and Networks (IFSTTAR) Laboratory of Applied Biomechanics, Aix-Marseille University, Marseille, France
| |
Collapse
|
37
|
Zinc-modified Calcium Silicate Coatings Promote Osteogenic Differentiation through TGF-β/Smad Pathway and Osseointegration in Osteopenic Rabbits. Sci Rep 2017; 7:3440. [PMID: 28611362 PMCID: PMC5469779 DOI: 10.1038/s41598-017-03661-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 05/03/2017] [Indexed: 12/19/2022] Open
Abstract
Surface-modified metal implants incorporating different ions have been employed in the biomedical field as bioactive dental implants with good osseointegration properties. However, the molecular mechanism through which surface coatings exert the biological activity is not fully understood, and the effects have been difficult to achieve, especially in the osteopenic bone. In this study, We examined the effect of zinc-modified calcium silicate coatings with two different Zn contents to induce osteogenic differentiation of rat bone marrow-derived pericytes (BM-PCs) and osteogenetic efficiency in ovariectomised rabbits. Ti-6Al-4V with zinc-modified calcium silicate coatings not only enhanced proliferation but also promoted osteogenic differentiation and mineralized matrix deposition of rat BM-PCs as the zinc content and culture time increased in vitro. The associated molecular mechanisms were investigated by Q-PCR and Western blotting, revealing that TGF-β/Smad signaling pathway plays a direct and significant role in regulating BM-PCs osteoblastic differentiation on Zn-modified coatings. Furthermore, in vivo results that revealed Zn-modified calcium silicate coatings significantly promoted new bone formation around the implant surface in osteopenic rabbits as the Zn content and exposure time increased. Therefore, Zn-modified calcium silicate coatings can improve implant osseointegration in the condition of osteopenia, which may be beneficial for patients suffering from osteoporosis-related fractures.
Collapse
|
38
|
Osseointegration improves bone-implant interface of pedicle screws in the growing spine: a biomechanical and histological study using an in vivo immature porcine model. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2017; 26:2754-2762. [PMID: 28391381 DOI: 10.1007/s00586-017-5062-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 02/05/2017] [Accepted: 03/22/2017] [Indexed: 10/19/2022]
Abstract
PURPOSE Implant failure is a frequent complication in corrective surgery for early onset scoliosis, since considerable forces are acting on small and fragile vertebrae. Osseointegration showing biomechanical and histological improvement in bone-implant interface (BII) after dental implant placement has been well investigated. However, there are no studies regarding osseointegration in immature vertebral bone. The purpose was to evaluate the timecourse of biomechanical and histological changes at BII after pedicle screw placement using in vivo immature porcine model. METHODS Ten immature porcine were instrumented with titanium pedicle screws in the thoracic spine. After a 0-, 2-, 4-, and 6-month survival periods, the spines were harvested at the age of 12 months. Histological evaluation of BII was conducted by bone volume/tissue volume (BV/TV) and bone surface/implant surface (BS/IS) measurements. Bone mineral density (BMD) measurement and biomechanical testing of BII were done. RESULTS Contact surface and bone volume around the screw threads were significantly increased over the time. BV/TV and BS/IS were improved with statistically significant differences between 0- and ≥4-month (p ≤ 0.001) periods. BMD in all subjects was determined to be the same (p ≥ 0.350). Pullout strength was also increased over time with significant differences between 0- and ≥2-month (p ≤ 0.011) periods. CONCLUSION Improved stability at BII caused by osseointegration was confirmed by in vivo immature porcine model. A two-stage operation is proposed based on the osseointegration theory, in which an implant is installed in advance in the vertebrae at the first stage and deformity correction surgery is performed after sufficient stability is obtained by osseointegration at a later stage.
Collapse
|
39
|
van Houdt CIA, Ulrich DJO, Jansen JA, van den Beucken JJJP. The performance of CPC/PLGA and Bio-Oss ® for bone regeneration in healthy and osteoporotic rats. J Biomed Mater Res B Appl Biomater 2016; 106:131-142. [PMID: 27889939 DOI: 10.1002/jbm.b.33801] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 09/15/2016] [Accepted: 09/23/2016] [Indexed: 12/24/2022]
Abstract
The current study aimed to evaluate the biological performance of calcium phosphate cement (CPC) with polylactic-co-glycolic acid (PLGA) micro-particles and Bio-Oss® in ovariectomized and healthy rats. Thirty-two Wistar rats received alternating experimental CPC/PLGA and Bio-Oss® in femoral condyle defects in both femurs 6 weeks after ovariectomy (OVX, n = 16) or sham operation (SHAM, n = 16). Six weeks after OVX or SHAM surgery, bone morphology was analyzed by in vivo computed tomography (CT) to confirm osteoporotic bone condition. Analysis of bone formation and material remnants at 4 and 12 weeks after material implantation was performed by micro-CT, descriptive histology, histomorphometry and bone dynamics by fluorochrome labeling. The in vivo CT scans showed effective induction of osteoporotic bone condition by ovariectomy. Our data showed CPC/PLGA degraded relatively faster and more steadily. However, Bio-Oss® had significantly less material remnants and showed significantly more bone formation compared to CPC/PLGA. Overall, our data showed relatively high amounts of CPC/PLGA for each time point, hampering new bone formation within the defect area. Osteoporotic conditions proved to significantly affect degradation rates, but did not significantly influence bone formation. An osteoporotic bone condition affects degradation of CPC/PLGA, which is vital information for its potential use in osteoporotic conditions. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 131-142, 2018.
Collapse
Affiliation(s)
| | - Dietmar J O Ulrich
- Radboudumc, Department of Plastic, Reconstructive and Hand Surgery, Nijmegen, the Netherlands
| | - John A Jansen
- Radboudumc, Department of Biomaterials, Nijmegen, the Netherlands
| | | |
Collapse
|
40
|
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.
Collapse
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
| |
Collapse
|
41
|
van Oirschot BA, Eman RM, Habibovic P, Leeuwenburgh SC, Tahmasebi Z, Weinans H, Alblas J, Meijer GJ, Jansen JA, van den Beucken JJ. Osteophilic properties of bone implant surface modifications in a cassette model on a decorticated goat spinal transverse process. Acta Biomater 2016; 37:195-205. [PMID: 27019145 DOI: 10.1016/j.actbio.2016.03.037] [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] [Received: 11/12/2015] [Revised: 03/21/2016] [Accepted: 03/24/2016] [Indexed: 11/26/2022]
Abstract
UNLABELLED This study comparatively evaluated the osteophilic capacity of 17 different surface modifications (i.e. fourteen different chemical modifications via ceramic coatings and three different physical modifications via surface roughness) for titanium (Ti) surfaces. All surface modifications were subjected to physico-chemical analyses and immersion in simulated body fluid (SBF) for coating stability assessment. Subsequently, a bone conduction chamber cassette model on the goat transverse process was used for comparative in vivo analysis based on bone responses to these different surface modifications after twelve weeks. Histological and histomorphometrical analyses in terms of longitudinal bone-to-implant contact percentage (BIC%), relative bone area (BA%) were investigated within each individual channel and maximum bone height (BH). Characterization of the surface modifications showed significant differences in surface chemistry and surface roughness among the surface modifications. Generally, immersion of the coatings in SBF showed net uptake of calcium by thick coatings (>50μm; plasma-sprayed and biomimetic coatings) and no fluctuations in the SBF for thin coatings (<50μm). The histomorphometrical data set demonstrated that only plasma-sprayed CaP coatings performed superiorly regarding BIC%, BA% and BH compared to un-coated surfaces, irrespective of surface roughness of the latter. In conclusion, this study demonstrated that the deposition of plasma-sprayed CaP coating with high roughness significantly improves the osteophilic capacity of titanium surfaces in a chamber cassette model. STATEMENT OF SIGNIFICANCE For the bone implant market, a large number of surface modifications are available on different types of (dental and orthopedic) bone implants. As the implant surface provides the interface at which the biomaterial interacts with the surrounding (bone) tissue, it is of utmost importance to know what surface modification has optimal osteophilic properties. In contrast to numerous earlier studies on bone implant surface modifications with limited number of comparison surfaces, the manuscript by van Oirschot et al. describes the data of in vivo experiments using a large animal model that allows for direct and simultaneous comparison of a large variety of surface modifications, which included both commercially available and experimental surface modifications for bone implants. These data clearly show the superiority of plasma-sprayed hydroxyapatite coatings regarding bone-to-implant contact, bone amount, and bone height.
Collapse
|
42
|
Dang Y, Zhang L, Song W, Chang B, Han T, Zhang Y, Zhao L. In vivo osseointegration of Ti implants with a strontium-containing nanotubular coating. Int J Nanomedicine 2016; 11:1003-11. [PMID: 27042055 PMCID: PMC4798202 DOI: 10.2147/ijn.s102552] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Novel biomedical titanium (Ti) implants with high osteogenic ability for fast and good osseointegration under normal as well as osteoporotic conditions are urgently needed. Expanding on our previous in vitro results, we hypothesized that nanotubular, strontium-loaded (NT-Sr) structures on Ti implants would have favorable osteogenic effects and evaluated the in vivo osseointegration of these implants in rats. The structures with nanotubes of different diameters were fabricated by electrochemical anodization at 10 and 40 V, and the amounts of Sr loaded were adjusted by using two hydrothermal treatment times of 1 and 3 hours. Qualitative microcomputed tomography in two and three dimensions showed that the NT-Sr formed with an anodization voltage of 10 V and hydrothermal treatment time of 3 hours best supported bone growth in vivo. Histomorphometric examination of osseointegration also showed that more newly formed bone was found at its surface. The bone–implant contact percentage was highest (92.48%±0.76%) at 12 weeks. In conclusion, the NT-Sr formed with an anodization voltage of 10 V and hydrothermal treatment time of 3 hours showed excellent osteogenic properties, making it an attractive option for Ti surface modification with considerable clinical potential.
Collapse
Affiliation(s)
- Yonggang Dang
- Department of Prosthetic Dentistry, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Li Zhang
- Department of Prosthetic Dentistry, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Wen Song
- Department of Prosthetic Dentistry, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Bei Chang
- Department of Prosthetic Dentistry, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Tianxiao Han
- Department of Prosthetic Dentistry, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Yumei Zhang
- Department of Prosthetic Dentistry, The Fourth Military Medical University, Xi'an, People's Republic of China
| | - Lingzhou Zhao
- Department of Periodontology, School of Stomatology, State Key Laboratory of Military Stomatology, The Fourth Military Medical University, Xi'an, People's Republic of China
| |
Collapse
|
43
|
Takahashi T, Watanabe T, Nakada H, Tanimoto Y, Kimoto S, Mijares DQ, Zhang Y, Kawai Y. Effect of a dietary supplement on peri-implant bone strength in a rat model of osteoporosis. J Prosthodont Res 2016; 60:131-7. [PMID: 26787534 DOI: 10.1016/j.jpor.2015.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 10/26/2015] [Accepted: 12/24/2015] [Indexed: 01/15/2023]
Abstract
PURPOSE Osteoporosis contributes to impaired bone regeneration and remodeling through an imbalance of osteoblastic and osteoclastic activity, and can delay peri-implant bone formation after dental implant surgery, resulting in a prolonged treatment period. It poses several difficulties for individuals with large edentulous areas, and decreases their quality of life. Consequently, prompt postoperative placement of the final prosthesis is very important clinically. Peri-implant bone formation may be enhanced by systemic approaches, such as the use of osteoporosis supplements, to promote bone metabolism. We aimed to confirm whether intake of synthetic bone mineral (SBM), a supplement developed for osteoporosis, could effectively accelerate peri-implant bone formation in a rat model of osteoporosis. METHODS Thirty-six 7-week-old ovariectomized female Wistar rats were randomly assigned to receive a standardized diet with or without SBM (Diet with SBM group and Diet without SBM group, respectively; n=18 for both). The rats underwent implant surgery at 9 weeks of age under general anesthesia. The main outcome measures, bone mineral density (BMD) and pull-out strength of the implant from the femur, were compared at 2 and 4 weeks after implantation using the Mann-Whitney U test. RESULTS Pull-out strength and BMD in the Diet with SBM group were significantly greater than those in the Diet without SBM group at 2 and 4 weeks after implantation. CONCLUSIONS This study demonstrated that SBM could be effective in accelerating peri-implant bone formation in osteoporosis.
Collapse
Affiliation(s)
- Takahiro Takahashi
- Nihon University Graduate School of Dentistry at Matsudo, Removable Prosthodontics, Matsudo, Japan
| | - Takehiro Watanabe
- Department of Removable Prosthodontics, Nihon University of Dentistry at Matsudo, Japan.
| | - Hiroshi Nakada
- Department of Removable Prosthodontics, Nihon University of Dentistry at Matsudo, Japan
| | - Yasuhiro Tanimoto
- Department of Dental Biomaterials, Nihon University of Dentistry at Matsudo, Japan
| | - Suguru Kimoto
- Department of Removable Prosthodontics, Nihon University of Dentistry at Matsudo, Japan
| | - Dindo Q Mijares
- Department of Biomaterials & Biomimetics, New York University College of Dentistry, USA
| | - Yu Zhang
- Department of Biomaterials & Biomimetics, New York University College of Dentistry, USA
| | - Yasuhiko Kawai
- Department of Removable Prosthodontics, Nihon University of Dentistry at Matsudo, Japan
| |
Collapse
|
44
|
Arabnejad S, Burnett Johnston R, Pura JA, Singh B, Tanzer M, Pasini D. High-strength porous biomaterials for bone replacement: A strategy to assess the interplay between cell morphology, mechanical properties, bone ingrowth and manufacturing constraints. Acta Biomater 2016; 30:345-356. [PMID: 26523335 DOI: 10.1016/j.actbio.2015.10.048] [Citation(s) in RCA: 172] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 10/26/2015] [Accepted: 10/29/2015] [Indexed: 12/21/2022]
Abstract
High-strength fully porous biomaterials built with additive manufacturing provide an exciting opportunity for load-bearing orthopedic applications. While factors controlling their mechanical and biological response have recently been the subject of intense research, the interplay between mechanical properties, bone ingrowth requirements, and manufacturing constraints, is still unclear. In this paper, we present two high-strength stretch-dominated topologies, the Tetrahedron and the Octet truss, as well as an intuitive visualization method to understand the relationship of cell topology, pore size, porosity with constraints imposed by bone ingrowth requirements and additive manufacturing. 40 samples of selected porosities are fabricated using Selective Laser Melting (SLM), and their morphological deviations resulting from SLM are assessed via micro-CT. Mechanical compression testing is used to obtain stiffness and strength properties, whereas bone ingrowth is assessed in a canine in vivo model at four and eight weeks. The results show that the maximum strength and stiffness ranged from 227.86±10.15 to 31.37±2.19MPa and 4.58±0.18 to 1.23±0.40GPa respectively, and the maximum 0.2% offset strength is almost 5 times stronger than that of tantalum foam. For Tetrahedron samples, bone ingrowth after four and eight weeks is 28.6%±11.6%, and 41.3%±4.3%, while for the Octet truss 35.5%±1.9% and 56.9%±4.0% respectively. This research is the first to demonstrate the occurrence of bone ingrowth into high-strength porous biomaterials which have higher structural efficiency than current porous biomaterials in the market. STATEMENT OF SIGNIFICANCE We present two stretch-dominated cell topologies for porous biomaterials that can be used for load-bearing orthopaedic applications, and prove that they encourage bone ingrowth in a canine model. We also introduce an intuitive method to visualize and understand the relationship of cell topology, pore size, porosity with constraints imposed by bone ingrowth requirements and additive manufacturing. We show this strategy helps to gain insight into the interaction of exogenous implant factors and endogenous system factors that can affect the success of load-bearing orthopaedic devices.
Collapse
|
45
|
Luo X, Barbieri D, Duan R, Yuan H, Bruijn JD. Strontium-containing apatite/polylactide composites enhance bone formation in osteopenic rabbits. Acta Biomater 2015; 26:331-7. [PMID: 26234489 DOI: 10.1016/j.actbio.2015.07.044] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 07/06/2015] [Accepted: 07/29/2015] [Indexed: 10/23/2022]
Abstract
Strontium (Sr) has been shown to favor bone formation and is used clinically to treat osteoporosis. We have previously reported that Sr addition in apatite/polylactide composites could enhance the BMP-induced bone formation around implants at ectopic site in healthy animals. In this study we aimed to investigate the effectiveness of Sr addition on the local bone formation in osteoporosis. Apatite/polylactide composite granules with different Sr content were loaded with equal amount of rhBMP-2 and implanted intramuscularly in healthy rabbits (Con) and rabbits that received bilateral ovariectomy and daily injection of glucocorticoid (OP) for 12 weeks. The potential effect of Sr on the final volume of BMP-induced bone in both groups was investigated histologically and histomorphometrically. The de novo bone formed in OP implants was significantly less than in Con group when the implants contained no Sr, indicating that the BMP-induced osteogenesis was impaired in OP animals. Sr substitution as low as 0.5 mol% in apatite increased the bone volume in OP implants to levels comparable to that in the Con group, indicating a positive effect of Sr addition on the local bone formation in OP animals. In addition, more adipose tissue formed in parallel with the appearance of cartilage tissue in OP implants, suggesting that the differentiation potential of stem cell in OP animals may have shifted towards adipogenesis and chondrogenesis. From these results, we conclude that the use of Sr addition to enhance the bone growth surrounding implants in osteoporosis merits further study. STATEMENT OF SIGNIFICANCE The impaired bone healing capacity of osteoporotic patients might result in poor osteointegration and surgical failure in case implants are placed. In this study we aimed to enhance the bone formation around implants under such scenario by adding strontium as the stimulus. Different from other studies, the samples were loaded with rhBMP-2 and implanted at an ectopic site (spinal muscles of New Zealand rabbits) to exclude the influence of conductive bone repair. The results showed that the addition of strontium could enhance the BMP-2-induced bone formation on implants in osteopenic rabbits to levels comparable to that in healthy rabbits. Secondarily, we observed more adipose tissue and cartilage tissue in osteopenic implants, suggesting the role of adipogenesis and chondrogenesis in osteopenia/osteoporosis.
Collapse
|
46
|
Collagen type I coating stimulates bone regeneration and osteointegration of titanium implants in the osteopenic rat. INTERNATIONAL ORTHOPAEDICS 2015. [DOI: 10.1007/s00264-015-2926-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
47
|
Yin G, Chen J, Wei S, Wang H, Chen Q, Lin Y, Hu J, Luo E. Adenoviral vector-mediated overexpression of osteoprotegerin accelerates osteointegration of titanium implants in ovariectomized rats. Gene Ther 2015; 22:636-44. [PMID: 25871826 DOI: 10.1038/gt.2015.34] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 02/27/2015] [Accepted: 03/31/2015] [Indexed: 02/05/2023]
Abstract
This study investigated the efficacy of human osteoprotegerin (hOPG) transgene to accelerate osteointegration of titanium implant in ovariectomized (OVX) rats. Bone marrow stromal cells transduced with Ad-hOPG-EGFP could sustainedly express hOPG. Osteoclast precursor RAW264.7 cells treated by the hOPG were examined by tartrate-resistant acid phosphatase (TRAP) staining and bone slice resorption assay. The results showed differentiation and function of osteoclasts were significantly suppressed by hOPG in vitro. Ad-hOPG-EGFP was locally administered to the bone defect prior to implant placement in OVX and sham rats. After 3, 7, 28 days of implantation, the femurs were harvested for molecular and histological analyses. Successful transgene expression was confirmed by western blot and cryosectioning. A significant reduction in TRAP+ numbers was detected in Ad-hOPG-EGFP group. Real-time reverse transcriptase-PCR examination revealed that hOPG transgene markedly diminished the expression of cathepsin K and receptor activator for nuclear factor-κ B ligand in vivo. The transgene hOPG modification revealed a marked increasing osteointegration and restored implant stability in OVX rats (P<0.01), compared with the control groups (Ad-EGFP or sterilized phosphate-buffered saline) 28 days after implantation. In conclusion, hOPG via direct adenovirus-mediated gene transfer could accelerate osteointegration of titanium implants in OVX rats. Osteoprotegerin gene therapy may be an effective strategy to osteointegration of implants under osteoporotic conditions.
Collapse
Affiliation(s)
- G Yin
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - J Chen
- Division of Oral Biology, Department of General Dentistry, Tufts University School of Dental Medicine, Boston, MA, USA
| | - S Wei
- Department of Oral and Maxillofacial Surgery, Laboratory of Interdisciplinary Studies, School and Hospital of Stomatology, Peking University, Beijing, China
| | - H Wang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Q Chen
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Lin
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - J Hu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - E Luo
- 1] State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China [2] Division of Oral Biology, Department of General Dentistry, Tufts University School of Dental Medicine, Boston, MA, USA
| |
Collapse
|
48
|
Babu RS A, Ogle O. Tissue response: biomaterials, dental implants, and compromised osseous tissue. Dent Clin North Am 2015; 59:305-15. [PMID: 25835795 DOI: 10.1016/j.cden.2014.10.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Tissue response represents an important feature in biocompatibility in implant procedures. This review article highlights the fundamental characteristics of tissue response after the implant procedure. This article also highlights the tissue response in compromised osseous conditions. Understanding the histologic events after dental implants in normal and abnormal bone reinforces the concept of case selection in dental implants.
Collapse
Affiliation(s)
- Arvind Babu RS
- Dentistry Programme, Faculty of Medical Sciences, The University of the West Indies, Mona, Kingston 7, Jamaica, West Indies.
| | - Orrett Ogle
- Dentistry Programme, Faculty of Medical Sciences, The University of the West Indies, Mona, Kingston 7, Jamaica, West Indies
| |
Collapse
|
49
|
Wei L, Ke J, Prasadam I, Miron RJ, Lin S, Xiao Y, Chang J, Wu C, Zhang Y. A comparative study of Sr-incorporated mesoporous bioactive glass scaffolds for regeneration of osteopenic bone defects. Osteoporos Int 2014; 25:2089-96. [PMID: 24807629 DOI: 10.1007/s00198-014-2735-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 04/22/2014] [Indexed: 12/24/2022]
Abstract
UNLABELLED Recently, the use of the pharmacological agent strontium ranelate has come to prominence for the treatment of osteoporosis. While much investigation is focused on preventing disease progression, here we fabricate strontium-containing scaffolds and show that they enhance bone defect healing in the femurs of rats induced by ovariectomy. INTRODUCTION Recently, the use of the pharmacological agent strontium ranelate has come to prominence for the treatment of osteoporosis due to its ability to prevent bone loss in osteoporotic patients. Although much emphasis has been placed on using pharmacological agents for the prevention of disease, much less attention has been placed on the construction of biomaterials following osteoporotic-related fracture. The aim of the present study was to incorporate bioactive strontium (Sr) trace element into mesoporous bioactive glass (MBG) scaffolds and to investigate their in vivo efficacy for bone defect healing in the femurs of rats induced by ovariectomy. METHODS In total, 30 animals were divided into five groups as follows: (1) empty defect (control), (2) empty defects with estrogen replacement therapy, (3) defects filled with MBG scaffolds alone, (4) defects filled with MBG + estrogen replacement therapy, and (5) defects filled with strontium-incorporated mesopore-bioglass (Sr-MBG) scaffolds. RESULTS The two groups demonstrating the highest levels of new bone formation were the defects treated with MBG + estrogen replacement therapy and the defects receiving Sr-MBG scaffolds as assessed by μ-CT and histological analysis. Furthermore, Sr scaffolds had a reduced number of tartrate-resistant acid phosphatase-positive cells when compared to other modalities. CONCLUSION The results from the present study demonstrate that the local release of Sr from bone scaffolds may improve fracture repair. Future large animal models are necessary to investigate the future relationship of Sr incorporation into biomaterials.
Collapse
Affiliation(s)
- L Wei
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, 237 Luoyu Road, Wuhan, 430079, People's Republic of China
| | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Alghamdi HS, van den Beucken JJ, Jansen JA. Osteoporotic Rat Models for Evaluation of Osseointegration of Bone Implants. Tissue Eng Part C Methods 2014; 20:493-505. [DOI: 10.1089/ten.tec.2013.0327] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Hamdan S. Alghamdi
- Department of Biomaterials, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University, Riyadh, Saudi Arabia
| | | | - John A. Jansen
- Department of Biomaterials, Radboud University Medical Center, Nijmegen, The Netherlands
| |
Collapse
|