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Shanbhag S, Kampleitner C, Sanz-Esporrin J, Lie SA, Gruber R, Mustafa K, Sanz M. Regeneration of alveolar bone defects in the experimental pig model: A systematic review and meta-analysis. Clin Oral Implants Res 2024; 35:467-486. [PMID: 38450852 DOI: 10.1111/clr.14253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 02/16/2024] [Accepted: 02/20/2024] [Indexed: 03/08/2024]
Abstract
OBJECTIVE Pigs are emerging as a preferred experimental in vivo model for bone regeneration. The study objective was to answer the focused PEO question: in the pig model (P), what is the capacity of experimental alveolar bone defects (E) for spontaneous regeneration in terms of new bone formation (O)? METHODS Following PRISMA guidelines, electronic databases were searched for studies reporting experimental bone defects or extraction socket healing in the maxillae or mandibles of pigs. The main inclusion criteria were the presence of a control group of untreated defects/sockets and the assessment of regeneration via 3D tomography [radiographic defect fill (RDF)] or 2D histomorphometry [new bone formation (NBF)]. Random effects meta-analyses were performed for the outcomes RDF and NBF. RESULTS Overall, 45 studies were included reporting on alveolar bone defects or extraction sockets, most frequently in the mandibles of minipigs. Based on morphology, defects were broadly classified as 'box-defects' (BD) or 'cylinder-defects' (CD) with a wide range of healing times (10 days to 52 weeks). Meta-analyses revealed pooled estimates (with 95% confidence intervals) of 50% RDF (36.87%-63.15%) and 43.74% NBF (30.47%-57%) in BD, and 44% RDF (16.48%-71.61%) and 39.67% NBF (31.53%-47.81%) in CD, which were similar to estimates of socket-healing [48.74% RDF (40.35%-57.13%) and 38.73% NBF (28.57%-48.89%)]. Heterogeneity in the meta-analysis was high (I2 > 90%). CONCLUSION A substantial body of literature revealed a high capacity for spontaneous regeneration in experimental alveolar bone defects of (mini)pigs, which should be considered in future studies of bone regeneration in this animal model.
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Affiliation(s)
- Siddharth Shanbhag
- Department of Immunology and Transfusion Medicine, Haukeland University Hospital, Bergen, Norway
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Carina Kampleitner
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, The Research Center in Cooperation with AUVA, Vienna, Austria
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Javier Sanz-Esporrin
- ETEP Research Group, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
| | - Stein-Atle Lie
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Reinhard Gruber
- Austrian Cluster for Tissue Regeneration, Vienna, Austria
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Kamal Mustafa
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Mariano Sanz
- ETEP Research Group, Faculty of Odontology, University Complutense of Madrid, Madrid, Spain
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Elsadek NA, Aboukhadr MA, Kamel FR, Mostafa HM, El-Kimary GI. Moringa oleifera leaf extract promotes the healing of critical sized bone defects in the mandibles of rabbits. BDJ Open 2024; 10:22. [PMID: 38485925 PMCID: PMC10940721 DOI: 10.1038/s41405-024-00201-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/19/2024] [Accepted: 02/22/2024] [Indexed: 03/18/2024] Open
Abstract
OBJECTIVE The search for an osteopromotive material that enhances the efficacy of alloplasts in reconstructive surgeries has been going on for years. This study aimed to histologically and histomorphometrically evaluate the efficiency of Moringa oleifera leaf extract as an osteopromotive biomaterial. DESIGN The study is a prospective randomized controlled animal study. 24 adult male New Zealand rabbits were equally allocated into test and control groups. Critical-sized bone defects were created in the edentulous areas of the mandibles of rabbits. The defects of the control group were filled with Beta-tricalcium Phosphate, while the defects of the test group were filled with Beta-tricalcium Phosphate combined with Moringa oleifera leaf extract. The results were evaluated histologically and histomorphometrically. RESULTS Histological and histomorphometric analysis showed a significant increase in the surface area of bone and the number of osteoblasts in test groups compared to those in the control groups. CONCLUSION Moringa oleifera leaf extract has a positive effect on bone regeneration in critical-sized bone defects.
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Affiliation(s)
- Nouran A Elsadek
- Department of Oral Medicine, Periodontology, Oral Diagnosis and Oral Radiology, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
| | - Maha A Aboukhadr
- Department of Oral Medicine, Periodontology, Oral Diagnosis and Oral Radiology, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Fatma R Kamel
- Department of Oral Medicine, Periodontology, Oral Diagnosis and Oral Radiology, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Hossam M Mostafa
- Department of Oral Biology, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Gillan I El-Kimary
- Department of Oral Medicine, Periodontology, Oral Diagnosis and Oral Radiology, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
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3
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Yadav P, Vats R, Bano A, Namdev R, Bhardwaj R. Ameliorative potential of stem cells from human exfoliated deciduous teeth (SHED) in preclinical studies: A meta-analysis. Regen Ther 2023; 24:117-134. [PMID: 37441223 PMCID: PMC10333108 DOI: 10.1016/j.reth.2023.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 05/27/2023] [Accepted: 06/07/2023] [Indexed: 07/15/2023] Open
Abstract
The preclinical and clinical role of mesenchymal stem cells from various adult sources is extensively investigated and established in regenerative medicine. However, the comprehensive exploration of the therapeutic potential of Stem cells from human exfoliated deciduous teeth (SHED) is inadequate. Therefore, we performed a systematic meta-analysis of preclinical animal model studies in several diseases to provide insight into SHED's efficacy and therapeutic potential. Two blinded and independent investigators searched the available online databases and scrutinized the included studies. Meta-analysis was performed to evaluate the pooled effect estimate of intervention of SHED by Review Manager 5.4.1. To investigate the therapeutic efficacy of SHED intervention, we also analyzed the test of heterogeneity (I2), overall effect (Z), sensitivity, and publication bias. Among the 2156 scrutinized studies, 40 were included and evaluated as per inclusion and exclusion criteria. The intervention of SHED and its derivatives in several diseases depicted statistically significant therapeutic effects in periodontitis, pulpitis, spinal cord injury, parkinson's disease, alzheimer's disease, focal cerebral ischemia, peripheral nerve injury, and retinal pigmentosa. SHED also improved levels of alanine aminotransferase, aspartate aminotransferase, and bilirubin in liver fibrosis . In autoimmune diseases also, values were significant. SHED also showed a statistically significant reduction of wound healing area and new bone formation in bone defects. The pooled effect estimates of included preclinical studies demonstrated a statistically significant therapeutic effect of SHED in numerous diseases. Based on our data, it is suggested that the potential of SHED may be implemented in clinical trials after conducting a few more preclinical studies.
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Affiliation(s)
- Pooja Yadav
- Stem Cell Biology Laboratory, Centre for Medical Biotechnology, Maharshi Dayanand University Rohtak, 124001, India
| | - Ravina Vats
- Stem Cell Biology Laboratory, Centre for Medical Biotechnology, Maharshi Dayanand University Rohtak, 124001, India
| | - Afsareen Bano
- Stem Cell Biology Laboratory, Centre for Medical Biotechnology, Maharshi Dayanand University Rohtak, 124001, India
| | - Ritu Namdev
- Dept. of Pediatric Dentistry, Post Graduate Institute of Dental Sciences, Rohtak, 124001, India
| | - Rashmi Bhardwaj
- Stem Cell Biology Laboratory, Centre for Medical Biotechnology, Maharshi Dayanand University Rohtak, 124001, India
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Park JJ, Rochlin DH, Parsaei Y, Shetye PR, Witek L, Leucht P, Rabbani PS, Flores RL. Bone Tissue Engineering Strategies for Alveolar Cleft: Review of Preclinical Results and Guidelines for Future Studies. Cleft Palate Craniofac J 2023; 60:1450-1461. [PMID: 35678607 DOI: 10.1177/10556656221104954] [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: 11/22/2022] Open
Abstract
The current standard of care for an alveolar cleft defect is an autogenous bone graft, typically from the iliac crest. Given the limitations of alveolar bone graft surgery, such as limited supply, donor site morbidity, graft failure, and need for secondary surgery, there has been growing interest in regenerative medicine strategies to supplement and replace traditional alveolar bone grafts. Though there have been preliminary clinical studies investigating bone tissue engineering methods in human subjects, lack of consistent results as well as limitations in study design make it difficult to determine the efficacy of these interventions. As the field of bone tissue engineering is rapidly advancing, reconstructive surgeons should be aware of the preclinical studies informing these regenerative strategies. We review preclinical studies investigating bone tissue engineering strategies in large animal maxillary or mandibular defects and provide an overview of scaffolds, stem cells, and osteogenic agents applicable to tissue engineering of the alveolar cleft. An electronic search conducted in the PubMed database up to December 2021 resulted in 35 studies for inclusion in our review. Most studies showed increased bone growth with a tissue engineering construct compared to negative control. However, heterogeneity in the length of follow up, method of bone growth analysis, and inconsistent use of positive control groups make comparisons across studies difficult. Future studies should incorporate a pediatric study model specific to alveolar cleft with long-term follow up to fully characterize volumetric defect filling, cellular ingrowth, bone strength, tooth movement, and implant support.
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Affiliation(s)
- Jenn J Park
- Hansjörg Wyss Department of Plastic Surgery, NYU Langone Health, New York, NY, USA
| | - Danielle H Rochlin
- Hansjörg Wyss Department of Plastic Surgery, NYU Langone Health, New York, NY, USA
| | - Yassmin Parsaei
- Hansjörg Wyss Department of Plastic Surgery, NYU Langone Health, New York, NY, USA
| | - Pradip R Shetye
- Hansjörg Wyss Department of Plastic Surgery, NYU Langone Health, New York, NY, USA
| | - Lukasz Witek
- New York University College of Dentistry, New York, NY, USA
| | - Philipp Leucht
- Hansjörg Wyss Department of Plastic Surgery, NYU Langone Health, New York, NY, USA
| | - Piul S Rabbani
- Hansjörg Wyss Department of Plastic Surgery, NYU Langone Health, New York, NY, USA
| | - Roberto L Flores
- Hansjörg Wyss Department of Plastic Surgery, NYU Langone Health, New York, NY, USA
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Xu J, Zhao B, Lin W, Liu Y, Zhang X, Wang Y, Zhang Y, Liu W, Seriwatanachai D, Yuan Q. Periplaneta americana extract promotes osteoblast differentiation of human alveolar bone marrow mesenchymal stem cells. Oral Dis 2023; 29:3540-3550. [PMID: 36516336 DOI: 10.1111/odi.14470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 12/06/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022]
Abstract
OBJECTIVES This study aims to investigate the effects of Traditional Chinese medicine, Periplaneta americana extract (PAE), on osteoblast differentiation of human alveolar bone marrow-derived mesenchymal stem cells (hABMMSCs). MATERIALS AND METHODS Human alveolar bone marrow-derived mesenchymal stem cells were treated with different concentrations of PAE. Cell Counting Kit-8 (CCK-8) assay and transwell migration assay were conducted to evaluate cell proliferation and migration, respectively. Alkaline phosphatase (ALP) staining, ALP activity assay, and Alizarin red S staining were performed to detect osteogenesis in hABMMSCs. In addition, real-time quantitative polymerase chain reaction (RT-qPCR) and western blot (WB) assay were performed to evaluate expression levels of osteogenic markers. Finally, RNA sequencing analysis and WB were carried out to elucidate the underlying mechanism. RESULTS A total of 0.1 mg/ml PAE promoted cell proliferation and migration. PAE also increased ALP activity and mineralized nodule formation of hABMMSCs. In addition, PAE upregulated the expression of osteogenesis-related genes (RUNX2, COL1A1, and BGLAP). RNA-sequencing analysis revealed that PAE activated the focal adhesion signaling pathway. Treatment with Defactinib, an inhibitor of FAK, attenuated the effects induced by PAE. CONCLUSIONS PAE could enhance osteoblast differentiation of hABMMSCs through focal adhesion signaling pathway, suggesting a therapeutic potential for the alveolar bone defect.
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Affiliation(s)
- Jie Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Bin Zhao
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Weimin Lin
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuting Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xiao Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuan Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yanjun Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Weiqing Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | | | - Quan Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Centre for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Patlataya NN, Bolshakov IN, Levenets AA, Medvedeva NN, Khorzhevskii VA, Cherkashina MA. Experimental Early Stimulation of Bone Tissue Neo-Formation for Critical Size Elimination Defects in the Maxillofacial Region. Polymers (Basel) 2023; 15:4232. [PMID: 37959911 PMCID: PMC10650047 DOI: 10.3390/polym15214232] [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: 09/11/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 11/15/2023] Open
Abstract
A biomaterial is proposed for closing extensive bone defects in the maxillofacial region. The composition of the biomaterial includes high-molecular chitosan, chondroitin sulfate, hyaluronate, heparin, alginate, and inorganic nanostructured hydroxyapatite. The purpose of this study is to demonstrate morphological and histological early signs of reconstruction of a bone cavity of critical size. The studies were carried out on 84 white female rats weighing 200-250 g. The study group consisted of 84 animals in total, 40 in the experimental group and 44 in the control group. In all animals, three-walled bone defects measuring 0.5 × 0.4 × 0.5 cm3 were applied subperiosteally in the region of the angle of the lower jaw and filled in the experimental group using lyophilized gel mass of chitosan-alginate-hydroxyapatite (CH-SA-HA). In control animals, the bone cavities were filled with their own blood clots after bone trepanation and bleeding. The periods for monitoring bone regeneration were 3, 5, and 7 days and 2, 3, 4, 6, 8, and 10 weeks. The control of bone regeneration was carried out using multiple morphological and histological analyses. Results showed that the following process is an obligatory process and is accompanied by the binding and release of angiogenic implantation: the chitosan construct actively replaced early-stage defects with the formation of full-fledged new bone tissue compared to the control group. By the 7th day, morphological analysis showed that the formation of spongy bone tissue could be seen. After 2 weeks, there was a pronounced increase in bone volume (p < 0.01), and at 6 weeks after surgical intervention, the closure of the defect was 70-80%; after 8 weeks, it was 100% without violation of bone morphology with a high degree of mineralization. Thus, the use of modified chitosan after filling eliminates bone defects of critical size in the maxillofacial region, revealing early signs of bone regeneration, and serves as a promising material in reconstructive dentistry.
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Affiliation(s)
| | - Igor Nicolaevich Bolshakov
- Department Operative Surgery and Topographic Anatomy, Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk 660022, Russia
| | - Anatoliy Alexandrovich Levenets
- Department Surgical Dentistry and Maxillofacial Surgery, Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk 660022, Russia;
| | | | - Vladimir Alexeevich Khorzhevskii
- Department Pathological Anatomy, Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk 660022, Russia;
- Krasnoyarsk Regional Pathological and Anatomical Bureau, Krasnoyarsk 660022, Russia
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Safiaghdam H, Nokhbatolfoghahaei H, Farzad-Mohajeri S, Dehghan MM, Farajpour H, Aminianfar H, Bakhtiari Z, Jabbari Fakhr M, Hosseinzadeh S, Khojasteh A. 3D-printed MgO nanoparticle loaded polycaprolactone β-tricalcium phosphate composite scaffold for bone tissue engineering applications: In-vitro and in-vivo evaluation. J Biomed Mater Res A 2023; 111:322-339. [PMID: 36334300 DOI: 10.1002/jbm.a.37465] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 11/08/2022]
Abstract
Magnesium (Mg) plays an important role in controlling bone apatite structure and density and is a potential bioactive material in repairing critical-sized bone defects. In this study, we aimed to evaluate the effect of adding NanoMgO to polycaprolactone/beta-tricalcium phosphate (PCL/β-TCP) scaffolds on bone regeneration. Novel 3D-printed porous PCL/β-TCP composite scaffolds containing 10% nanoMgO were fabricated by fused deposition modeling (FDM) and compared with PCL/β-TCP (1:1) scaffolds (control). The morphology and physicochemical properties of the scaffolds were characterized by ATR-FTIR, XRD, scanning electron microscope-energy dispersive X-ray analysis (SEM-EDX), transmission-electron-microscopy (TEM), water contact angle, and compressive strength tests and correlated to its cytocompatibility and osteogenic capacity in-vitro. To evaluate in-vivo osteogenic capacity, bone-marrow-derived stem cell (BMSC)-loaded scaffolds were implanted into 8 mm rat critical-sized calvarial defects for 12 weeks. The hydrophilic scaffolds showed 50% porosity (pore size = 504 μm). MgO nanoparticles (91.5 ± 27.6 nm) were homogenously dispersed and did not adversely affect BMSCs' viability and differentiation. Magnesium significantly increased elastic modulus, pH, and degradation. New bone formation (NBF) in Micro-CT was 30.16 ± 0.31% and 23.56 ± 1.76% in PCL/β-TCP/nanoMgO scaffolds with and without BMSCs respectively, and 19.38 ± 2.15% and 15.75 ± 2.24% in PCL/β-TCP scaffolds with and without BMSCs respectively. Angiogenesis was least remarkable in PCL/β-TCP compared with other groups (p < .05). Our results suggest that the PCL/β-TCP/nanoMgO scaffold is a more suitable bone substitute compared to PCL/β-TCP in critical-sized calvarial defects.
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Affiliation(s)
- Hannaneh Safiaghdam
- Student Research Committee, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hanieh Nokhbatolfoghahaei
- Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saeed Farzad-Mohajeri
- Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.,Institute of Biomedical Research, University of Tehran, Tehran, Iran
| | - Mohammad Mehdi Dehghan
- Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.,Institute of Biomedical Research, University of Tehran, Tehran, Iran
| | - Hekmat Farajpour
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hossein Aminianfar
- Institute of Biomedical Research, University of Tehran, Tehran, Iran.,Department of Pathology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Zeinab Bakhtiari
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Massoumeh Jabbari Fakhr
- Institute of Biomedical Research, University of Tehran, Tehran, Iran.,Department of Tissue Engineering, Faculty of Medicine, Qom University of Medical Sciences, Qom, Iran
| | - Simzar Hosseinzadeh
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Medical Nanotechnology and Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arash Khojasteh
- Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Cranio-Maxillofacial Surgery/University Hospital, Faculty of Medicine & Health Sciences, University of Antwerp, Antwerp, Belgium
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Agrawal M, Yadav A, Takkar S, Kulshreshtha R, Nandan B, Srivastava RK. Dual-functionalized Pickering HIPE templated poly(ɛ-caprolactone) scaffold for maxillofacial implants. Int J Pharm 2023; 633:122611. [PMID: 36646256 DOI: 10.1016/j.ijpharm.2023.122611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023]
Abstract
High internal phase emulsion (HIPE) templated poly (ɛ-caprolactone) (PCL) scaffolds have gained widespread attention for large-sized bone defects due to its tuneable 3D architecture and ease of fabricating crosslinked PCL (cPCL) scaffolds. However, extremely high stabilizer (surfactant or nanoparticle) concentration and negligence of microenvironment for regeneration sites like alveolar bones have restrained industrial acceptance of these scaffolds. Herein, we demonstrated the fabrication of nanocomposite cPCL scaffolds within Pickering HIPE templates stabilized using modified silica nanoparticles (mSiNP) concentrations as low as 0.1 to 1.0 wt%. Using an unconventional approach, the mSiNP Pickering stabilizer was added in dispersed phase, contradicting Bancroft's rule. The colloidal stability was attained due to faster drifting of mSiNP towards the interface when it was dispersed in silicone oil. Scaffolds with tuneable properties were fabricated by controlling the mSiNP concentration and ϕd. Further, cPCL scaffolds were functionalized using clove oil (CO) to improve their efficiency in eradicating S. aureus and E. coli by disrupting their cellular integrity. Additionally, formation of biofilm on the surface of the scaffolds was successfully inhibited by the incorporation of CO. CO-functionalized scaffolds demonstrated excellent cytocompatibility towards MG-63 cells allowing their successful adhesion and proliferation on the surface of the scaffolds.
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Affiliation(s)
- Meenal Agrawal
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, Delhi 110016, India
| | - Anilkumar Yadav
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, Delhi 110016, India
| | - Sonam Takkar
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, Delhi 110016, India
| | - Ritu Kulshreshtha
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, Delhi 110016, India
| | - Bhanu Nandan
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, Delhi 110016, India
| | - Rajiv K Srivastava
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, Delhi 110016, India.
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Liu C, Sharpe P, Volponi AA. Applications of regenerative techniques in adult orthodontics. FRONTIERS IN DENTAL MEDICINE 2023. [DOI: 10.3389/fdmed.2022.1100548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Management of the growing adult orthodontic patient population must contend with challenges particular to orthodontic treatment in adults. These include a limited rate of tooth movement, increased incidence of periodontal complications, higher risk of iatrogenic root resorption and pulp devitalisation, resorbed edentulous ridges, and lack of growth potential. The field of regenerative dentistry has evolved numerous methods of manipulating cellular and molecular processes to rebuild functional oral and dental tissues, and research continues to advance our understanding of stem cells, signalling factors that stimulate repair and extracellular scaffold interactions for the purposes of tissue engineering. We discuss recent findings in the literature to synthesise our understanding of current and prospective approaches based on biological repair that have the potential to improve orthodontic treatment outcomes in adult patients. Methods such as mesenchymal stem cell transplantation, biomimetic scaffold manipulation, and growth factor control may be employed to overcome the challenges described above, thereby reducing adverse sequelae and improving orthodontic treatment outcomes in adult patients. The overarching goal of such research is to eventually translate these regenerative techniques into clinical practice, and establish a new gold standard of safe, effective, autologous therapies.
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Fang CH, Lin HY, Sun CK, Lin YW, Hung MC, Li CH, Lin IP, Chang HC, Sun JS, Chang JZC. Decoronation-induced infected alveolar socket defect rat model for ridge preservation. Sci Rep 2022; 12:9940. [PMID: 35705614 PMCID: PMC9200756 DOI: 10.1038/s41598-022-14064-6] [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: 12/23/2021] [Accepted: 05/31/2022] [Indexed: 11/09/2022] Open
Abstract
Current rat alveolar ridge preservation models have not been well standardized. In this study, we proposed decoronation-induced infected alveolar socket model of rat. The bilateral maxillary first molars (M1) of twenty-four rats were decoronized or extracted. After 2, 6, 10, and 14 weeks, bone and soft tissue changes at M1 and periodontal conditions of maxillary second (M2) and third molars (M3) were evaluated by micro-computed tomography and histological analysis. Additional eighteen rats with standardized size defects were grafted with Bio-Oss Collagen to compare with unmanipulated contralateral side. Decoronation preserved greater bone and soft tissue dimensions at M1, provided larger three-dimensional (3D) bone contour volume, but also promoted periodontal breakdown of M2 Histological results showed intense inflammatory cell infiltrations and severe bone resorption within M1 socket and at mesial aspect of M2. The critical dimensions to accommodate largest standardized defect at M1 were 2.2-2.3 mm at vertical bone height and 2.8-3.2 mm at alveolar crestal width. Bio-Oss Collagen could not fully preserve buccal or palatal bone height but could be beneficial in preserving ridge width in large alveolar defects. Collectively, if periodontally-involved alveolar bone defect is preferred, we suggest extracting M1 roots 6 weeks after decoronation to allow periodontitis to occur at M2. If standardized critical dimension defect is preferred, we suggest extracting M1 roots 2 weeks after decoronation, and creating defect in the middle of M1 site with size no larger than 2.7 mm diameter to its full depth.
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Affiliation(s)
- Chih-Hsiang Fang
- Trauma and Emergency Center, China Medical University Hospital, No. 2, Xueshi Rd., North Dist., Taichung City, 404018, Taiwan
| | - Hung-Ying Lin
- Department of Dentistry, College of Medicine, National Taiwan University Hospital, No. 1, Chang-Te Street, Taipei, 10048, Taiwan
| | - Chung-Kai Sun
- Institute of Traditional Medicine, School of Medicine, National Yang Ming Chiao Tung University, No. 155, Sec. 2, Linong Street, Taipei, 11221, Taiwan
| | - Yi-Wen Lin
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei, 10617, Taiwan
| | - Min-Chih Hung
- Department of Dentistry, College of Medicine, National Taiwan University Hospital, No. 1, Chang-Te Street, Taipei, 10048, Taiwan
| | - Ching-Hung Li
- Department of Dentistry, College of Medicine, National Taiwan University Hospital, No. 1, Chang-Te Street, Taipei, 10048, Taiwan
| | - I-Ping Lin
- Department of Dentistry, National Taiwan University Hospital, Hisnchu Branch, No. 25, Lane 442, Sec. 1 Jingguo Rd., Hsinchu City, 30059, Taiwan
| | - Hung-Chen Chang
- Gin Chen Dental Clinic, No. 31, Long Chiang Rd, Taipei, Taiwan
| | - Jui-Sheng Sun
- Trauma and Emergency Center, China Medical University Hospital, No. 2, Xueshi Rd., North Dist., Taichung City, 404018, Taiwan. .,School of Medicine, China Medical University-YingCai Campus, No. 91, Xueshi Rd., North Dist., Taichung City, 404333, Taiwan. .,Department of Orthopedic Surgery, National Taiwan University Hospital, No. 7, Chung-Shan South Road, Taipei, 10002, Taiwan. .,Department of Orthopedic Surgery, College of Medicine, China Medical University, No. 2, Yu-Der Rd, Taichung City, 40447, Taiwan.
| | - Jenny Zwei-Chieng Chang
- Department of Dentistry, College of Medicine, National Taiwan University Hospital, No. 1, Chang-Te Street, Taipei, 10048, Taiwan. .,School of Dentistry, College of Medicine, National Taiwan University, No 1, Chang-Te Street, Taipei, 10048, Taiwan.
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11
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Characterization and In Vitro Cytotoxicity Safety Screening of Fractionated Organosolv Lignin on Diverse Primary Human Cell Types Commonly Used in Tissue Engineering. BIOLOGY 2022; 11:biology11050696. [PMID: 35625424 PMCID: PMC9139013 DOI: 10.3390/biology11050696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 11/16/2022]
Abstract
Simple Summary As global efforts to use eco-friendly and reusable materials increase, the use of lignin from waste biomass will continue to intensify. Lignin is an underutilized biowaste macromolecule that is gaining considerable interest in biomedical research. However, the source of lignin and the extraction process heavily influence its chemistry, which can influence a cell’s reaction to lignin. Organosolv lignin is extracted via an eco-friendly process from leftover waste material. Few studies have tested the biocompatibility of organosolv lignins with human cells. We extensively characterized fractionated organosolv lignin and performed in vitro cytotoxicity safety screening on diverse primary human cell types commonly used in tissue engineering. This is the first study to show that, at a balanced concentration, fractionated low MW beechwood-derived organosolv lignin is non-cytotoxic to highly relevant human cell types used in tissue engineering including human bone marrow-derived mesenchymal stromal cells (MSCs), chondrocytes, osteoblasts, periodontal ligament fibroblasts, gingival fibroblasts and keratinocytes. Additionally, we show that organosolv lignin can be used to fabricate cell scaffolds and that addition of lignin increased the stiffness and viscosity of the scaffolds as well as cell attachment. This suggests that organosolv lignin may be used in the generation of tissue-like biomaterial-based constructs for tissue repair. Abstract There is limited data assessing the cytotoxic effects of organosolv lignin with cells commonly used in tissue engineering. Structural and physico-chemical characterization of fractionated organosolv lignin showed that a decrease of the molecular weight (MW) is accompanied by a less branched conformation of the phenolic biopolymer (higher S/G ratio) and an increased number of aliphatic hydroxyl functionalities. Enabling stronger polymer−solvent interactions, as proven by the Hansen solubility parameter analysis, low MW organosolv lignin (2543 g/mol) is considered to be compatible with common biomaterials. Using low MW lignin, high cell viability (70–100%) was achieved after 2 h, 24 h and 7 days using the following lignin concentrations: MSCs and osteoblasts (0.02 mg/mL), gingival fibroblasts and keratinocytes (0.02 to 0.04 mg/mL), periodontal ligament fibroblasts and chondrocytes (0.02 to 0.08 mg/mL). Cell viability was reduced at higher concentrations, indicating that high concentrations are cytotoxic. Higher cell viability was attained using 30/70 (w/v) NaOH vs. 40/60 (w/v) EtOH as the initial lignin solvent. Hydrogels containing low MW lignin (0.02 to 0.3 mg/mL) in agarose dose-dependently increased chondrocyte attachment (cell viability 84–100%) and hydrogel viscosity and stiffness to 3–11 kPa, similar to the pericellular matrix of chondrocytes. This suggests that low MW organosolv lignin may be used in many tissue engineering fields.
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12
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Colorado C, Escobar LM, Lafaurie GI, Durán C, Perdomo-Lara SJ. Human Recombinant Cementum Protein 1, Dental Pulp Stem Cells, and PLGA/hydroxyapatite Scaffold as Substitute Biomaterial in Critical Size Osseous Defect Repair in vivo. Arch Oral Biol 2022; 137:105392. [DOI: 10.1016/j.archoralbio.2022.105392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 02/11/2022] [Accepted: 03/01/2022] [Indexed: 12/19/2022]
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13
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Metformin-Incorporated Gelatin/Nano-Hydroxyapatite Scaffolds Promotes Bone Regeneration in Critical Size Rat Alveolar Bone Defect Model. Int J Mol Sci 2022; 23:ijms23010558. [PMID: 35008984 PMCID: PMC8745742 DOI: 10.3390/ijms23010558] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 02/06/2023] Open
Abstract
In this study, we fabricated gelatin/nano-hydroxyapatite/metformin scaffold (GHMS) and compared its effectiveness in bone regeneration with extraction-only, Sinbone, and Bio-Oss Collagen® groups in a critical size rat alveolar bone defect model. GHMS was synthesized by co-precipitating calcium hydroxide and orthophosphoric acid within gelatin solution, incorporating metformin, and cross-linked by microbial transglutaminase. The morphology, characterization, and biocompatibility of scaffold were examined. The in vitro effects of GHMS on osteogenic gene and protein expressions were evaluated. In vivo bone formation was assessed in a critical size rat alveolar bone defect model with micro-computed tomography and histological examination by comparing GHMS with extraction-only, Sinbone, and Bio-Oss Collagen®. The synthesized GHMS had a highly interconnected porous structure with a mean pore size of 81.85 ± 13.8 µm. GHMS exhibited good biocompatibility; promoted ALPL, RUNX2, SP7, BGLAP, SPARC and Col1a1 gene expressions; and upregulated the synthesis of osteogenic proteins, including osteonectin, osteocalcin, and collagen type I. In critical size rat alveolar bone defects, GHMS showed superior bone regeneration compared to extraction-only, Sinbone, and Bio-Oss Collagen® groups as manifested by greater alveolar ridge preservation, while more bone formation with a lower percentage of connective tissue and residual scaffold at the defect sites grafted with GHMS in histological staining. The GHMS presented in this study may be used as a potential bone substitute to regenerate alveolar bone. The good biocompatibility, relatively fast degradation, interconnected pores allowing vascularization, and higher bioactivity properties of the components of the GHMS (gelatin, nHA, and metformin) may contribute to direct osteogenesis.
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14
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Shanbhag S, Suliman S, Mohamed-Ahmed S, Kampleitner C, Hassan MN, Heimel P, Dobsak T, Tangl S, Bolstad AI, Mustafa K. Bone regeneration in rat calvarial defects using dissociated or spheroid mesenchymal stromal cells in scaffold-hydrogel constructs. Stem Cell Res Ther 2021; 12:575. [PMID: 34776000 PMCID: PMC8591809 DOI: 10.1186/s13287-021-02642-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/22/2021] [Indexed: 12/20/2022] Open
Abstract
Background Three-dimensional (3D) spheroid culture can promote the osteogenic differentiation of bone marrow mesenchymal stromal cells (BMSC). 3D printing offers the possibility to produce customized scaffolds for complex bone defects. The aim of this study was to compare the potential of human BMSC cultured as 2D monolayers or 3D spheroids encapsulated in constructs of 3D-printed poly-L-lactide-co-trimethylene carbonate scaffolds and modified human platelet lysate hydrogels (PLATMC-HPLG) for bone regeneration. Methods PLATMC-HPLG constructs with 2D or 3D BMSC were assessed for osteogenic differentiation based on gene expression and in vitro mineralization. Subsequently, PLATMC-HPLG constructs with 2D or 3D BMSC were implanted in rat calvarial defects for 12 weeks; cell-free constructs served as controls. Bone regeneration was assessed via in vivo computed tomography (CT), ex vivo micro-CT and histology. Results Osteogenic gene expression was significantly enhanced in 3D versus 2D BMSC prior to, but not after, encapsulation in PLATMC-HPLG constructs. A trend for greater in vitro mineralization was observed in constructs with 3D versus 2D BMSC (p > 0.05). In vivo CT revealed comparable bone formation after 4, 8 and 12 weeks in all groups. After 12 weeks, micro-CT revealed substantial regeneration in 2D BMSC (62.47 ± 19.46%), 3D BMSC (51.01 ± 24.43%) and cell-free PLATMC-HPLG constructs (43.20 ± 30.09%) (p > 0.05). A similar trend was observed in the histological analysis. Conclusion Despite a trend for superior in vitro mineralization, constructs with 3D and 2D BMSC performed similarly in vivo. Regardless of monolayer or spheroid cell culture, PLATMC-HPLG constructs represent promising scaffolds for bone tissue engineering applications. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02642-w.
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Affiliation(s)
- Siddharth Shanbhag
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Årstadveien 19, 5009, Bergen, Norway. .,Department of Immunology and Transfusion Medicine, Haukeland University Hospital, Bergen, Norway.
| | - Salwa Suliman
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Årstadveien 19, 5009, Bergen, Norway
| | - Samih Mohamed-Ahmed
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Årstadveien 19, 5009, Bergen, Norway
| | - Carina Kampleitner
- Core Facility Hard Tissue and Biomaterial Research/Karl Donath Laboratory, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Traumatology, The research center in cooperation with AUVA, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Mohamed Nageeb Hassan
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Årstadveien 19, 5009, Bergen, Norway
| | - Patrick Heimel
- Core Facility Hard Tissue and Biomaterial Research/Karl Donath Laboratory, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Traumatology, The research center in cooperation with AUVA, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Toni Dobsak
- Core Facility Hard Tissue and Biomaterial Research/Karl Donath Laboratory, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Stefan Tangl
- Core Facility Hard Tissue and Biomaterial Research/Karl Donath Laboratory, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria
| | - Anne Isine Bolstad
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Årstadveien 19, 5009, Bergen, Norway
| | - Kamal Mustafa
- Center for Translational Oral Research (TOR), Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Årstadveien 19, 5009, Bergen, Norway.
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15
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Hu S, Chen H, Zhou F, Liu J, Qian Y, Hu K, Yan J, Gu Z, Guo Z, Zhang F, Gu N. Superparamagnetic core-shell electrospun scaffolds with sustained release of IONPs facilitating in vitro and in vivo bone regeneration. J Mater Chem B 2021; 9:8980-8993. [PMID: 34494055 DOI: 10.1039/d1tb01261d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Bone tissue engineering (BTE) is a promising approach to recover insufficient bone in dental implantations. However, the clinical application of BTE scaffolds is limited by their low mechanical strength and lack of osteoinduction. In an attempt to circumvent these limitations and improve osteogenesis, we introduced magnetic iron oxide nanoparticles (IONPs) into a core-shell porous electrospun scaffold and evaluated their impact on the physical, mechanical, and biological properties of the scaffold. We used poly(lactic-co-glycolic acid)/polycaprolactone/beta-tricalcium phosphate (PPT) scaffolds with and without γ-Fe2O3 encapsulation, namely PPT-Fe scaffolds and PPT scaffolds, respectively. The γ-Fe2O3 used in the PPT-Fe scaffolds was coated with polyglucose sorbitol carboxymethylether and was biocompatible. Structurally, PPT-Fe scaffolds showed uniform iron distribution encapsulated within the resorbable PPT scaffolds, and these scaffolds supported sustainable iron release. Furthermore, compared with PPT scaffolds, PPT-Fe scaffolds showed significantly better physical and mechanical properties, including wettability, superparamagnetism, hardness, tensile strength, and elasticity modulus. In vitro tests of rat adipose-derived mesenchymal stem cells (rADSCs) seeded onto the scaffolds showed increased expression of integrin β1, alkaline phosphatase, and osteogenesis-related genes. In addition, enhanced in vivo bone regeneration was observed after implanting PPT-Fe scaffolds in rat calvarial bone defects. Thus, we can conclude that the incorporation of IONPs into porous scaffolds for long-term release can provide a new strategy for BTE scaffold optimization and is a promising approach that can offer enhanced osteogenic capacity in clinical applications.
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Affiliation(s)
- Shuying Hu
- Jiangsu Province Key Laboratory of Oral Diseases, Department of Prosthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China.
| | - Hanbang Chen
- Jiangsu Province Key Laboratory of Oral Diseases, Department of Prosthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China.
| | - Fang Zhou
- Jiangsu Province Key Laboratory of Oral Diseases, Department of Prosthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China.
| | - Jun Liu
- Jiangsu Province Key Laboratory of Oral Diseases, Department of Prosthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China.
| | - Yunzhu Qian
- Center of Stomatology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Ke Hu
- Laboratory of Oral Regenerative Medicine Technology, School of Biomedical Engineering and Informatics, Department of Biomedical Engineering, Nanjing Medical University, Nanjing 210000, China
| | - Jia Yan
- Jiangsu Province Key Laboratory of Oral Diseases, Department of Prosthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China.
| | - Zhuxiao Gu
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, China
| | - Zhaobin Guo
- Institute for Nanobiotechnology, Johns Hopkins University, Baltimore, 21218, USA
| | - Feimin Zhang
- Jiangsu Province Key Laboratory of Oral Diseases, Department of Prosthodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing 210029, China.
| | - Ning Gu
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210009, China
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16
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Timing of orthodontic tooth movement in bone defects repaired with synthetic scaffolds: A scoping review of animal studies. Arch Oral Biol 2021; 132:105278. [PMID: 34634537 DOI: 10.1016/j.archoralbio.2021.105278] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/28/2021] [Accepted: 09/29/2021] [Indexed: 02/01/2023]
Abstract
OBJECTIVE The optimal timing of orthodontic tooth movement (OTM) could allow earlier tooth movements across alveolar bone defects while minimizing the adverse effects. The objective of this scoping systematic review was therefore designed to review pre-clinical animal studies on the ideal protocol for the timing of orthodontic traction across alveolar defects augmented with synthetic scaffolds. DESIGN Following the PRISMA-ScR guidelines, three electronic databases were searched (Pubmed, Scopus and Web of Science). RESULTS A total of twelve studies were included in the final review that reported on small-animal (rats, guinea pigs, rabbits) and large-animal (dogs and goats) models. Based on the grafting biomaterials, eight papers used cell-free scaffolds, four articles utilised cell-based scaffolds. The timing protocol for the initiation of OTM employed in the studies ranged from immediate to 6 months after surgical grafting. Only four studies included autologous bone graft (gold standard) as positive control. Most papers reported positive results with regards to the rate of OTM and bone augmentation effects while only a few reported side effects such as root resorptions. Overall, the included articles showed a massive heterogeneity in terms of the animal bone defect model characteristics, scaffold materials, study designs, parameters of OTM and methods of analysis. CONCLUSION Since there was inadequate evidence to identify the optimal protocol of OTM, optimization of animal bone defect models and outcome measurements is needed to improve the translational ability of future studies.
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17
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Affiliation(s)
- Kanchan Maji
- Center of Excellence in Tissue Engineering, Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
| | - Krishna Pramanik
- Center of Excellence in Tissue Engineering, Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, India
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18
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Steiner C, Karl M, Laschke MW, Schupbach P, Venturato A, Gasser A. Comparison of extraction sites versus artificial defects with xenogenic bone substitute in minipigs. Clin Exp Dent Res 2021; 7:490-501. [PMID: 33398935 PMCID: PMC8404495 DOI: 10.1002/cre2.390] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 12/03/2020] [Accepted: 12/04/2020] [Indexed: 12/17/2022] Open
Abstract
Objectives The preclinical evaluation of bone substitutes is frequently performed in artificially created defects. However, such defects do not reflect the predominant clinical application of bone substitutes for socket preservation. Hence, the goal of this animal study was to compare the performance of a xenogenic bone substitute in extraction sites versus artificial defects. Material and Methods Four study sites each were created in the mandibles of four minipigs in the region of the third premolars and first molars, respectively. On one side, fresh extraction sockets were established while contralaterally trephine defects were created in healed alveolar bone. All sites were augmented using a particulate xenogenic bone substitute, covered by resorbable membranes and allowed to heal for 12 weeks. The amounts of new bone, non‐bone tissue and remaining bone substitute granules were quantified through histological and micro‐CT analysis. Comparative statistics were based on t‐tests for two samples and ANOVA with the level of significance set at α = 0.05. Results Histomorphometric data from only two animals could be quantitatively analyzed due to difficulty with identifying the surgical sites. The percentage of newly formed bone ranged between 53.2% ± 5.6% for artificial defects and 54.9% ± 12.4% for extraction sites. With the exception of ANOVA indicating a greater amount of non‐bone tissue in extraction sites as compared to artificial sites (p = 0.047), no statistically significant differences were observed. Micro‐CT scans showed patterns similar to the ones observed in histomorphometry. As extraction sites could be identified only in two micro‐CT reconstructions, quantitative assessment was not undertaken. Conclusions Despite the comparable performance of bone substitute material in artificial defects and extraction sites found here, the data gathered with this experiment was insufficient for showing equivalence of both approaches.
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Affiliation(s)
| | - Matthias Karl
- Department of Prosthodontics, Saarland University, Homburg, Germany
| | - Matthias W Laschke
- Institute for Clinical and Experimental Surgery, Saarland University, Homburg, Germany
| | - Peter Schupbach
- Laboratory for Histology, Electron Microscopy and Imaging, Schupbach Ltd., Thalwil, Switzerland
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Safiaghdam H, Nokhbatolfoghahaei H, Khojasteh A. Therapeutic Metallic Ions in Bone Tissue Engineering: A Systematic Review of The Literature. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2020; 18:101-118. [PMID: 32802092 PMCID: PMC7393040 DOI: 10.22037/ijpr.2020.112641.13894] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
An important field of bone tissue engineering (BTE) concerns the design and fabrication of smart scaffolds capable of inducing cellular interactions and differentiation of osteo-progenitor cells. One of these additives that has gained growing attention is metallic ions as therapeutic agents (MITAs). The specific biological advantage that these ions bring to scaffolds as well as other potential mechanical, and antimicrobial enhancements may vary depending on the ion entity, fabrication method, and biomaterials used. Therefore, this article provides an overview on current status of In-vivo application of MITAs in BTE and the remaining challenges in the field. Electronic databases, including PubMed, Scopus, Science direct and Cochrane library were searched for studies on MITAs treatments for BTE. We searched for articles in English from January-2000 to October-2019. Abstracts, letters, conference papers and reviews, In-vitro studies, studies on alloys and studies investigating effects other than enhancement of new bone formation (NBF) were excluded. A detailed summary of relevant metallic ions with specific scaffold material and design, cell type, animal model and defect type, the implantation period, measured parameters and obtained qualitative and quantitative results is presented. No ideal material or fabrication method suited to deliver MITAs can yet be agreed upon, but an investigation into various systems and their drawbacks or potential advantages can lead the future research. A tendency to enhance NBF with MITAs can be observed in the studies. However, this needs to be validated with further studies comparing various ions with each other in the same animal model using critical-sized defects.
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Affiliation(s)
- Hannaneh Safiaghdam
- Student Research Committee, Dental school, Shahid Beheshti university of medical sciences, Tehran, Iran
| | - Hanieh Nokhbatolfoghahaei
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arash Khojasteh
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Dental Research Center, Research Institute of Dental Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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20
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Yong KW, Choi JR, Choi JY, Cowie AC. Recent Advances in Mechanically Loaded Human Mesenchymal Stem Cells for Bone Tissue Engineering. Int J Mol Sci 2020; 21:E5816. [PMID: 32823645 PMCID: PMC7461207 DOI: 10.3390/ijms21165816] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/06/2020] [Accepted: 08/12/2020] [Indexed: 12/14/2022] Open
Abstract
Large bone defects are a major health concern worldwide. The conventional bone repair techniques (e.g., bone-grafting and Masquelet techniques) have numerous drawbacks, which negatively impact their therapeutic outcomes. Therefore, there is a demand to develop an alternative bone repair approach that can address the existing drawbacks. Bone tissue engineering involving the utilization of human mesenchymal stem cells (hMSCs) has recently emerged as a key strategy for the regeneration of damaged bone tissues. However, the use of tissue-engineered bone graft for the clinical treatment of bone defects remains challenging. While the role of mechanical loading in creating a bone graft has been well explored, the effects of mechanical loading factors (e.g., loading types and regime) on clinical outcomes are poorly understood. This review summarizes the effects of mechanical loading on hMSCs for bone tissue engineering applications. First, we discuss the key assays for assessing the quality of tissue-engineered bone grafts, including specific staining, as well as gene and protein expression of osteogenic markers. Recent studies of the impact of mechanical loading on hMSCs, including compression, perfusion, vibration and stretching, along with the potential mechanotransduction signalling pathways, are subsequently reviewed. Lastly, we discuss the challenges and prospects of bone tissue engineering applications.
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Affiliation(s)
- Kar Wey Yong
- Department of Surgery, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Jane Ru Choi
- Department of Mechanical Engineering, University of British Columbia, 2054-6250 Applied Science Lane, Vancouver, BC V6T 1Z4, Canada
- Centre for Blood Research, Life Sciences Centre, University of British Columbia, 2350 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
| | - Jean Yu Choi
- Ninewells Hospital & Medical School, Dundee, Scotland DD1 5EH, UK; (J.Y.C.); (A.C.C.)
| | - Alistair C. Cowie
- Ninewells Hospital & Medical School, Dundee, Scotland DD1 5EH, UK; (J.Y.C.); (A.C.C.)
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21
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Anitua E, Troya M, Zalduendo M, Flores J, Tierno R, Alkhraisat MH. The influence of alveolar bone healing degree on its potential as a source of human alveolar bone-derived cells. Ann Anat 2020; 232:151578. [PMID: 32688020 DOI: 10.1016/j.aanat.2020.151578] [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] [Received: 10/31/2019] [Revised: 06/16/2020] [Accepted: 06/29/2020] [Indexed: 01/06/2023]
Abstract
BACKGROUND The concept of bone tissue engineering has emerged as a novel alternative approach that comprises three essential components: osteogenic cells, osteoinductive signals and osteoconductive scaffolds. The low-speed drilling represents a useful and accessible autologous source for human alveolar bone-derived cells (hABCs). The aim of this study was to compare the efficacy of two donor sites (healing sites (HS) and non-augmented healed sites (NAHS)) as a source of hABCs. METHODS Nineteen patients were enrolled in this study. The patients' demographic data were described. Bone type and dental implant location were also determined. The hABCs obtained were characterized. Apoptosis and sclerostin expression in the samples were also assessed with immunohistochemistry. RESULTS The hABCs left earlier the tissue explants of the HS than the NAHS. The proliferation of the hABCs had reached the sub-confluence stage in both groups. Cellular efficacy was not statistically significant between the two groups. The hABCs exhibited osteogenic phenotype as they expressed bone sialoprotein (BSP), osteopontin (OP) and tissue non-specific alkaline phosphatase (TNAP). In both groups, the level and the distribution pattern of apoptotic cells and sclerostin expression were similar. CONCLUSIONS Within the limitations of this study, both HS and NAHS were similarly effective to provide hABCs.
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Affiliation(s)
- Eduardo Anitua
- University Institute for Regenerative Medicine and Oral Implantology (UIRMI), Vitoria, Spain; BTI - Biotechnology Institute, Vitoria, Spain.
| | - María Troya
- University Institute for Regenerative Medicine and Oral Implantology (UIRMI), Vitoria, Spain; BTI - Biotechnology Institute, Vitoria, Spain
| | - Mar Zalduendo
- University Institute for Regenerative Medicine and Oral Implantology (UIRMI), Vitoria, Spain; BTI - Biotechnology Institute, Vitoria, Spain
| | - Javier Flores
- University Institute for Regenerative Medicine and Oral Implantology (UIRMI), Vitoria, Spain
| | - Roberto Tierno
- University Institute for Regenerative Medicine and Oral Implantology (UIRMI), Vitoria, Spain; BTI - Biotechnology Institute, Vitoria, Spain
| | - Mohammad Hamdan Alkhraisat
- University Institute for Regenerative Medicine and Oral Implantology (UIRMI), Vitoria, Spain; BTI - Biotechnology Institute, Vitoria, Spain
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Carluccio M, Ziberi S, Zuccarini M, Giuliani P, Caciagli F, Di Iorio P, Ciccarelli R. Adult mesenchymal stem cells: is there a role for purine receptors in their osteogenic differentiation? Purinergic Signal 2020; 16:263-287. [PMID: 32500422 DOI: 10.1007/s11302-020-09703-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 05/04/2020] [Indexed: 02/06/2023] Open
Abstract
The role played by mesenchymal stem cells (MSCs) in contributing to adult tissue homeostasis and damage repair thanks to their differentiation capabilities has raised a great interest, mainly in bone regenerative medicine. The growth/function of these undifferentiated cells of mesodermal origin, located in specialized structures (niches) of differentiated organs is influenced by substances present in this microenvironment. Among them, ancestral and ubiquitous molecules such as adenine-based purines, i.e., ATP and adenosine, may be included. Notably, extracellular purine concentrations greatly increase during tissue injury; thus, MSCs are exposed to effects mediated by these agents interacting with their own receptors when they act/migrate in vivo or are transplanted into a damaged tissue. Here, we reported that ATP modulates MSC osteogenic differentiation via different P2Y and P2X receptors, but data are often inconclusive/contradictory so that the ATP receptor importance for MSC physiology/differentiation into osteoblasts is yet undetermined. An exception is represented by P2X7 receptors, whose expression was shown at various differentiation stages of bone cells resulting essential for differentiation/survival of both osteoclasts and osteoblasts. As well, adenosine, usually derived from extracellular ATP metabolism, can promote osteogenesis, likely via A2B receptors, even though findings from human MSCs should be implemented and confirmed in preclinical models. Therefore, although many data have revealed possible effects caused by extracellular purines in bone healing/remodeling, further studies, hopefully performed in in vivo models, are necessary to identify defined roles for these compounds in favoring/increasing the pro-osteogenic properties of MSCs and thereby their usefulness in bone regenerative medicine.
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Affiliation(s)
- Marzia Carluccio
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, Via dei Vestini 29, 66100, Chieti, Italy.,Center for Advanced Studies and Technologies (CAST), University of Chieti-Pescara, Via L. Polacchi, 66100, Chieti, Italy.,StemTeCh Group, Via L. Polacchi, 66100, Chieti, Italy
| | - Sihana Ziberi
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, Via dei Vestini 29, 66100, Chieti, Italy.,Center for Advanced Studies and Technologies (CAST), University of Chieti-Pescara, Via L. Polacchi, 66100, Chieti, Italy.,StemTeCh Group, Via L. Polacchi, 66100, Chieti, Italy
| | - Mariachiara Zuccarini
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, Via dei Vestini 29, 66100, Chieti, Italy.,Center for Advanced Studies and Technologies (CAST), University of Chieti-Pescara, Via L. Polacchi, 66100, Chieti, Italy
| | - Patricia Giuliani
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, Via dei Vestini 29, 66100, Chieti, Italy.,Center for Advanced Studies and Technologies (CAST), University of Chieti-Pescara, Via L. Polacchi, 66100, Chieti, Italy
| | - Francesco Caciagli
- Center for Advanced Studies and Technologies (CAST), University of Chieti-Pescara, Via L. Polacchi, 66100, Chieti, Italy
| | - Patrizia Di Iorio
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, Via dei Vestini 29, 66100, Chieti, Italy.,Center for Advanced Studies and Technologies (CAST), University of Chieti-Pescara, Via L. Polacchi, 66100, Chieti, Italy
| | - Renata Ciccarelli
- Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, Via dei Vestini 29, 66100, Chieti, Italy. .,Center for Advanced Studies and Technologies (CAST), University of Chieti-Pescara, Via L. Polacchi, 66100, Chieti, Italy. .,StemTeCh Group, Via L. Polacchi, 66100, Chieti, Italy.
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Tissue Engineering and Regenerative Medicine in Craniofacial Reconstruction and Facial Aesthetics. J Craniofac Surg 2020; 31:15-27. [PMID: 31369496 DOI: 10.1097/scs.0000000000005840] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The craniofacial region is anatomically complex and is of critical functional and cosmetic importance, making reconstruction challenging. The limitations of current surgical options highlight the importance of developing new strategies to restore the form, function, and esthetics of missing or damaged soft tissue and skeletal tissue in the face and cranium. Regenerative medicine (RM) is an expanding field which combines the principles of tissue engineering (TE) and self-healing in the regeneration of cells, tissues, and organs, to restore their impaired function. RM offers many advantages over current treatments as tissue can be engineered for specific defects, using an unlimited supply of bioengineered resources, and does not require immunosuppression. In the craniofacial region, TE and RM are being increasingly used in preclinical and clinical studies to reconstruct bone, cartilage, soft tissue, nerves, and blood vessels. This review outlines the current progress that has been made toward the engineering of these tissues for craniofacial reconstruction and facial esthetics.
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24
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Li Y, Qiao Z, Yu F, Hu H, Huang Y, Xiang Q, Zhang Q, Yang Y, Zhao Y. Transforming Growth Factor-β3/Chitosan Sponge (TGF-β3/CS) Facilitates Osteogenic Differentiation of Human Periodontal Ligament Stem Cells. Int J Mol Sci 2019; 20:E4982. [PMID: 31600954 PMCID: PMC6834328 DOI: 10.3390/ijms20204982] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/04/2019] [Accepted: 10/07/2019] [Indexed: 12/12/2022] Open
Abstract
Periodontal disease is the main reason for tooth loss in adults. Tissue engineering and regenerative medicine are advanced technologies used to manage soft and hard tissue defects caused by periodontal disease. We developed a transforming growth factor-β3/chitosan sponge (TGF-β3/CS) to repair periodontal soft and hard tissue defects. We investigated the proliferation and osteogenic differentiation behaviors of primary human periodontal ligament stem cells (hPDLSCs) to determine the bioactivity and potential application of TGF-β3 in periodontal disease. We employed calcein-AM/propidium iodide (PI) double labeling or cell membranes (CM)-Dil labeling coupled with fluorescence microscopy to trace the survival and function of cells after implantation in vitro and in vivo. The mineralization of osteogenically differentiated hPDLSCs was confirmed by measuring alkaline phosphatase (ALP) activity and calcium content. The levels of COL I, ALP, TGF-βRI, TGF-βRII, and Pp38/t-p38 were assessed by western blotting to explore the mechanism of bone repair prompted by TGF-β3. When hPDLSCs were implanted with various concentrations of TGF-β3/CS (62.5-500 ng/mL), ALP activity was the highest in the TGF-β3 (250 ng/mL) group after 7 d (p < 0.05 vs. control). The calcium content in each group was increased significantly after 21 and 28 d (p < 0.001 vs. control). The optimal result was achieved by the TGF-β3 (500 ng/mL) group. These results showed that TGF-β3/CS promotes osteogenic differentiation of hPDLSCs, which may involve the p38 mitogen-activated protein kinase (MAPK) signaling pathway. TGF-β3/CS has the potential for application in the repair of incomplete alveolar bone defects.
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Affiliation(s)
- Yangfan Li
- Institute of Biomedicine and Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, China (Y.H.)
| | - Zhifen Qiao
- Institute of Biomedicine and Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, China (Y.H.)
| | - Fenglin Yu
- Institute of Biomedicine and Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, China (Y.H.)
| | - Huiting Hu
- Department of Stomatology, Jinan University Medical College, Guangzhou 510632, China;
| | - Yadong Huang
- Institute of Biomedicine and Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, China (Y.H.)
| | - Qi Xiang
- Institute of Biomedicine and Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, China (Y.H.)
| | - Qihao Zhang
- Institute of Biomedicine and Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, China (Y.H.)
| | - Yan Yang
- Institute of Biomedicine and Guangdong Provincial Key Laboratory of Bioengineering Medicine, Jinan University, Guangzhou 510632, China (Y.H.)
| | - Yueping Zhao
- Department of Stomatology, Jinan University Medical College, Guangzhou 510632, China;
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25
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Shanbhag S, Suliman S, Pandis N, Stavropoulos A, Sanz M, Mustafa K. Cell therapy for orofacial bone regeneration: A systematic review and meta-analysis. J Clin Periodontol 2019; 46 Suppl 21:162-182. [DOI: 10.1111/jcpe.13049] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 10/17/2018] [Accepted: 10/26/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Siddharth Shanbhag
- Department of Clinical Dentistry; Center for Clinical Dental Research; University of Bergen; Bergen Norway
| | - Salwa Suliman
- Department of Clinical Dentistry; Center for Clinical Dental Research; University of Bergen; Bergen Norway
| | - Nikolaos Pandis
- Department of Orthodontics and Dentofacial Orthopedics; University of Bern; Bern Switzerland
| | - Andreas Stavropoulos
- Department of Periodontology; Faculty of Odontology; Malmö University; Malmö Sweden
| | - Mariano Sanz
- Section of Periodontology; Faculty of Odontology; University Complutense of Madrid; Madrid Spain
| | - Kamal Mustafa
- Department of Clinical Dentistry; Center for Clinical Dental Research; University of Bergen; Bergen Norway
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26
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Zeng JH, Qiu P, Xiong L, Liu SW, Ding LH, Xiong SL, Li JT, Xiao ZB, Zhang T. Bone repair scaffold coated with bone morphogenetic protein-2 for bone regeneration in murine calvarial defect model: Systematic review and quality evaluation. Int J Artif Organs 2019; 42:325-337. [PMID: 30905250 DOI: 10.1177/0391398819834944] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
To systematically assess the effects of hydroxyapatite bone repair scaffold coated with bone morphogenetic protein-2 on murine calvarial defect models and to determine the quality of studies according to the Animal Research Reporting in In Vivo Experiments guidelines. Internet search was performed in duplicate using PubMed, MEDLINE, Ovid and Embase databases (without restrictions on publication date). The Animal Research Reporting in In Vivo Experiments guidelines were used to evaluate the quality of selected studies. Following screening, 12 studies were eligible for the review. Studies with average quality coefficients predominated (66.67%), followed by poor (25%) and excellent (8.33%) quality coefficients. Minimum quality scores were assigned to the Animal Research Reporting in In Vivo Experiments guideline items: housing and husbandry (9), allocation (11), outcomes (12), interpretation (18) and generalizability (19). Sprague–Dawley rats were the most frequently used (50%) species, and most studies had a sample size of more than 30 (58.33%). A defect dimension of 5 mm was the most common (33.33%). The biological hydroxyapatite composite scaffold was common (50%), and the bioactive factors were bone morphogenetic protein-2 (50%) and recombinant human bone morphogenetic protein-2 (50%). Histomorphometric results showed that bone morphogenetic protein-2 enhanced the capacity to regenerate bone considerably. In addition, scaffolds with bone morphogenetic protein-2 resulted in a significant increase in the blood vessel in the new bone. The findings suggested that data on animal experiments of hydroxyapatite scaffold coated with bone morphogenetic protein-2 in murine calvarial defect models lack homogeneity. Animal experiment should follow the Animal Research Reporting in In Vivo Experiments guidelines to promote the high quality, integrity and reproducibility. This systematic review suggested that bone morphogenetic protein-2 enhanced the capacity to regenerate bone and the angiogenesis in the new bone.
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Affiliation(s)
- Jian-Hua Zeng
- Department of Orthopaedics, Jiangxi Provincial People’s Hospital Affiliated to Nanchang University, Nanchang, P.R. China
| | - Peng Qiu
- Department of Orthopaedics, Jiangxi Provincial People’s Hospital Affiliated to Nanchang University, Nanchang, P.R. China
| | - Long Xiong
- Department of Orthopaedics, Jiangxi Provincial People’s Hospital Affiliated to Nanchang University, Nanchang, P.R. China
| | - Shi-Wei Liu
- Department of Orthopaedics, Jiangxi Provincial People’s Hospital Affiliated to Nanchang University, Nanchang, P.R. China
| | - Ling-Hua Ding
- Department of Orthopaedics, Jiangxi Provincial People’s Hospital Affiliated to Nanchang University, Nanchang, P.R. China
| | | | - Jing-Tang Li
- Department of Orthopaedics, Jiangxi Provincial People’s Hospital Affiliated to Nanchang University, Nanchang, P.R. China
| | - Ze-Bu Xiao
- Department of Rehabilitation Medicine, Jiangxi Provincial People’s Hospital Affiliated to Nanchang University, Nanchang, P.R. China
| | - Tao Zhang
- Department of Orthopaedics, Jiangxi Provincial People’s Hospital Affiliated to Nanchang University, Nanchang, P.R. China
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27
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The Influence of the First-Stage DO Treatment of Palate Defect on Growth of Maxilla. J Craniofac Surg 2019; 30:1303-1307. [PMID: 30817520 DOI: 10.1097/scs.0000000000005284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
To study the influence of distraction osteogenesis (DO) on the maxillary growth as first-stage treatment of palatal defect. The uniform palate defect experimental animal models (21 miniature pigs) were established surgically. Then animals were randomly divided into negative control group (A, n = 6), conventional surgery group (B, n = 6), and distraction osteogenesis group (C, n = 9) respectively. The group A underwent none treatment as control group, the group B were undergoing a conventional defect repair surgery, and the group C were undergoing a distraction osteogenesis treatment. Cone beam computed tomography examination was performed monthly to analyze the growth of maxilla for 6 months. One pig of group C was randomly sacrificed at 2, 4, and 8 weeks after the completion of DO and the tissue of distraction gap was stained with hematoxylin-eosin and Masson staining. At the end of 6th months, all pigs were sacrificed and tissues of the surgical area were stained as previous described. The palate defect was repaired by the distraction osteogenesis with the successful bone formation on the distraction gap. Group A and group C kept a similar growth rate, but that of group B was relatively slow. Distraction osteogenesis is efficient and successful for closing the defect of palate and there is no significant disturbance on the subsequent growth of the maxilla.
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28
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Dereka X, Calciolari E, Donos N, Mardas N. Osseointegration in osteoporotic-like condition: A systematic review of preclinical studies. J Periodontal Res 2018; 53:933-940. [PMID: 29845622 DOI: 10.1111/jre.12566] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2018] [Indexed: 12/11/2022]
Abstract
Osteoporosis is one of the most common skeletal disorders affecting a significant percentage of people worldwide. Research data suggested that systemic diseases such as osteoporosis could act as risk factors for osseointegration, jeopardizing the healing process and thus the predictability of dental implant success on compromised patients. It is well accepted that preclinical studies in animal models reproducing the osteoporotic condition are one of the most important stages in the research of new biomaterials and therapeutic modalities. The aim of this systematic review was to investigate whether osteoporosis compromises dental implant osseointegration in experimental osteoporotic-like conditions. A 3-stage systematic literature research was conducted in MEDLINE via OVID and EMBASE up to and including March 2017. Experimental studies reporting on dental implant osseointegration on different osteoporotic animal models were assessed. The studies had to report on the percentage of bone-to-implant contact (%BIC) as the primary outcome. ARRIVE guidelines for reporting on animal research were applied to evaluate the methodological quality and risk of bias of the studies. Fifty-seven studies met the inclusion criteria and were assessed qualitatively. The most adopted animal model was the rat. A variability of %BIC values was observed, ranging from 30% to 99% and from 26% to 94% for the healthy and osteoporotic group, respectively. The great majority (47) of the included studies concluded that estrogen deficiency significantly affects BIC values, 9 studies stated that it was not possible to observe statistical differences in BIC between ovariectomized and healthy groups and 1 study did not provide a comparison between the healthy and osteoporotic group. Owing to the great heterogeneity in implant surface, study design, observation time-points, site of implant placement and reported outcomes, a meta-analysis could not be performed. An overall high risk of bias was observed, owing to the limited information on animal housing and husbandry, baseline characteristics and health status, ethical statement and allocation to the experimental groups provided. Although the available studies seem to suggest a lower osseointegration in osteoporotic-like conditions, no robust conclusions can be drawn due to the great heterogeneity and overall low quality of the available studies. Future studies with emphasis on minimizing the possible sources of bias and evaluating osseointegration of dental implants placed into jawbones instead of long bones are warranted.
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Affiliation(s)
- X Dereka
- Department of Periodontology, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
- Centre for Oral Immunobiology & Regenerative Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
- Centre for Clinical Oral Research, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
| | - E Calciolari
- Centre for Oral Immunobiology & Regenerative Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
- Centre for Clinical Oral Research, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
| | - N Donos
- Centre for Oral Immunobiology & Regenerative Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
- Centre for Clinical Oral Research, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
| | - N Mardas
- Centre for Oral Immunobiology & Regenerative Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London (QMUL), London, UK
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29
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Wu D, Wang Z, Wang J, Geng Y, Zhang Z, Li Y, Li Q, Zheng Z, Cao Y, Zhang ZY. Development of a micro-tissue-mediated injectable bone tissue engineering strategy for large segmental bone defect treatment. Stem Cell Res Ther 2018; 9:331. [PMID: 30486863 PMCID: PMC6263540 DOI: 10.1186/s13287-018-1064-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/18/2018] [Accepted: 10/31/2018] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Bone tissue engineering is not widely used in clinical treatment. Two main reasons hide behind this: (1) the seed cells are difficult to obtain and (2) the process of tissue engineering bone construction is too complex and its efficiency is still relatively low. It is foreseeable that in the near future, the problem of seed cell sources could be solved completely in tissue engineering bone repair. As for the complex process and low efficiency of tissue engineering bone construction, usually two strategies would be considered: (1) the construction strategy based on injectable bone tissue and (2) the construction strategy based on osteogenic cell sheets. However, the application of injectable bone tissue engineering (iBTE) strategy and osteogenic cell sheet strategy is limited and they could hardly be used directly in repairing defects of large segmental bone, especially load-bearing bone. METHODS In this study, we built an osteogenic micro-tissue with simple construction but with a certain structure and composition. Based on this, we established a new iBTE repair strategy-osteogenic micro-tissue in situ repair strategy, mainly targeting at solving the problem of large segmental bone defect. The steps are as follows: (1) Build the biodegradable three-dimensional scaffold based on the size of the defect site with 3D printing rapid prototyping technology. (2) Implant the three-dimensional scaffold into the defect site. This scaffold is considered as the "steel framework" that could provide both mechanical support and space for bone tissue growth. (3) Inject the osteogenic micro-tissue (i.e., the "cell-extracellular matrix" complex), which could be considered as "concrete," into the three-dimensional scaffold, to promote the bone tissue regeneration in situ. Meanwhile, the digested cells were injected as the compared group in this experiment. After 3 months, the effect of in situ bone defect repair of osteogenic micro-tissue and digested cells was compared. RESULTS It is confirmed that osteogenic micro-tissue could achieve a higher efficiency on cell usage and has a better repair effect than the digested cells. CONCLUSIONS Osteogenic micro-tissue repairing strategy would be a more promising clinical strategy to solve the problem of large segmental bone defect.
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Affiliation(s)
- Dingyu Wu
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011 China
| | - Zhenxing Wang
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022 China
| | - Jinbing Wang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011 China
| | - Yingnan Geng
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011 China
| | - Zhanzhao Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011 China
| | - Yu Li
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011 China
| | - Qiannan Li
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011 China
| | - Zhiwei Zheng
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011 China
| | - Yilin Cao
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011 China
- Translational Research Centre of Regenerative Medicine and 3D Printing Technologies of Guangzhou Medical University, The Third Affiliated Hospital of Guangzhou Medical University, No.63 Duobao Road, Liwan District, Guangzhou City, 510150 Guangdong Province China
| | - Zhi-Yong Zhang
- Translational Research Centre of Regenerative Medicine and 3D Printing Technologies of Guangzhou Medical University, The Third Affiliated Hospital of Guangzhou Medical University, No.63 Duobao Road, Liwan District, Guangzhou City, 510150 Guangdong Province China
- China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou, 310058 China
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30
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Wu D, Wang Z, Zheng Z, Geng Y, Zhang Z, Li Q, Zhou Q, Cao Y, Zhang ZY. Effects of physiological aging factor on bone tissue engineering repair based on fetal BMSCs. J Transl Med 2018; 16:324. [PMID: 30470235 PMCID: PMC6251213 DOI: 10.1186/s12967-018-1686-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 11/09/2018] [Indexed: 12/30/2022] Open
Abstract
Background At present, many laboratories and hospitals all over the world are attempting and exploring the clinical transformation of this tissue engineered bone graft (TEBG) strategy. Many successful cases of bone tissue engineering (BTE) repair were based on young individuals. But there are little studies about the effectiveness of TEBG strategy in physiological aged individuals. Methods In this research, we studied whether aging factor has influence on the skull repair effect of Fetal-TEBG, at the level of the large animal models. We used the fetal bone marrow stromal cells (Fetal-BMSCs) as the seed cells, combining the decalcified bone matrix (DBM) scaffolds, to repair the skull defects of the aged goats and the young goats. The repair effects on both aged goat and young goat were compared by Micro-CT and histology examination. Results The skull defects of the young goats could be repaired better than that of the aged goats after 6 months by Fetal-TEBG; In the aged goats, although not completely repaired, the defects repaired by Fetal-TEBG was better than that repaired by the Control DBM scaffold. Conclusions Aging factor has impact on the bone repair effect of Fetal-TEBG; and the BTE strategy is still efficacious even in the aged individuals. The improvement of the aged state may promote the repair effect of the BTE in the aged individuals. ![]()
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Affiliation(s)
- Dingyu Wu
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Zhenxing Wang
- Department of Plastic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Zhiwei Zheng
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Yingnan Geng
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Zhanzhao Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Qiannan Li
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China
| | - Quan Zhou
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China.,Hunan Prevention and Treatment Institute for Occupational Diseases, Changsha, China
| | - Yilin Cao
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People's Hospital, Shanghai Key Laboratory of Tissue Engineering, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200011, China. .,Translational Research Centre of Regenerative Medicine and 3D Printing Technologies of Guangzhou Medical University, The Third Affiliated Hospital of Guangzhou Medical University, No. 63 Duobao Road, Liwan District, Guangzhou City, 510150, Guangdong Province, China.
| | - Zhi-Yong Zhang
- Translational Research Centre of Regenerative Medicine and 3D Printing Technologies of Guangzhou Medical University, The Third Affiliated Hospital of Guangzhou Medical University, No. 63 Duobao Road, Liwan District, Guangzhou City, 510150, Guangdong Province, China. .,China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou, 310058, China.
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31
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Helgeland E, Shanbhag S, Pedersen TO, Mustafa K, Rosén A. Scaffold-Based Temporomandibular Joint Tissue Regeneration in Experimental Animal Models: A Systematic Review. TISSUE ENGINEERING PART B-REVIEWS 2018; 24:300-316. [PMID: 29400140 DOI: 10.1089/ten.teb.2017.0429] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Reconstruction of degenerated temporomandibular joint (TMJ) structures remains a clinical challenge. Tissue engineering (TE) is a promising alternative to current treatment options, where the TMJ is either left without functional components, or replaced with autogenous, allogeneic, or synthetic grafts. The objective of this systematic review was to answer the focused question: in experimental animal models, does the implantation of biomaterial scaffolds loaded with cells and/or growth factors (GFs) enhance regeneration of the discal or osteochondral TMJ tissues, compared with scaffolds alone, without cells, or GFs? Following PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analysis) guidelines, electronic databases were searched for relevant controlled preclinical in vivo studies. Thirty studies reporting TMJ TE strategies in both small (rodents, rabbits; n = 25) and large animals (dogs, sheep, goats; n = 5) reporting histological and/or radiographic outcomes were included. Twelve studies reported ectopic (subcutaneous) implantation models in rodents, whereas 18 studies reported orthotopic, surgically induced defect models in large animals. On average, studies presented with an unclear-to-high risk of bias. In most studies, mesenchymal stem cells or chondrocytes were used in combination with either natural or synthetic polymer scaffolds, aiming for either TMJ disc or condyle regeneration. In summary, the overall preclinical evidence (ectopic [n = 6] and orthotopic TMJ models [n = 6]) indicate that addition of chondrogenic and/or osteogenic cells to biomaterial scaffolds enhances the potential for TMJ tissue regeneration. Standardization of animal models and quantitative outcome evaluations (biomechanical, biochemical, histomorphometric, and radiographic) in future studies, would allow more reliable comparisons and increase the validity of the results.
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Affiliation(s)
- Espen Helgeland
- 1 Department of Clinical Dentistry, Center for Clinical Dental Research, University of Bergen , Bergen, Norway
| | - Siddharth Shanbhag
- 1 Department of Clinical Dentistry, Center for Clinical Dental Research, University of Bergen , Bergen, Norway
| | - Torbjørn Ostvik Pedersen
- 1 Department of Clinical Dentistry, Center for Clinical Dental Research, University of Bergen , Bergen, Norway .,2 Department of Oral and Maxillofacial Surgery, University of Bergen and Haukeland University Hospital , Bergen, Norway
| | - Kamal Mustafa
- 1 Department of Clinical Dentistry, Center for Clinical Dental Research, University of Bergen , Bergen, Norway
| | - Annika Rosén
- 1 Department of Clinical Dentistry, Center for Clinical Dental Research, University of Bergen , Bergen, Norway .,2 Department of Oral and Maxillofacial Surgery, University of Bergen and Haukeland University Hospital , Bergen, Norway
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Shanbhag S, Stavropoulos A, Suliman S, Hervig T, Mustafa K. Efficacy of Humanized Mesenchymal Stem Cell Cultures for Bone Tissue Engineering: A Systematic Review with a Focus on Platelet Derivatives. TISSUE ENGINEERING PART B-REVIEWS 2017; 23:552-569. [PMID: 28610481 DOI: 10.1089/ten.teb.2017.0093] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Fetal bovine serum (FBS) is the most commonly used supplement for ex vivo expansion of human mesenchymal stem cells (hMSCs) for bone tissue engineering applications. However, from a clinical standpoint, it is important to substitute animal-derived products according to current good manufacturing practice (cGMP) guidelines. Humanized alternatives to FBS include three categories of products: human serum (HS), human platelet derivatives (HPDs)-including platelet lysate (PL) or platelet releasate (PR), produced by freeze/thawing or chemical activation of platelet concentrates, respectively, and chemically defined media (serum-free) (CDM). In this systematic literature review, the in vitro and in vivo osteogenic potential of hMSCs expanded in humanized (HS-, HPD-, or CDM-supplemented) media versus hMSCs expanded in FBS-supplemented media, was compared. In addition, PL and PR were compared in terms of their growth factor (GF)/cytokine-content and cell-culture efficacy. When using either 10-20% autologous or pooled HS, 3-10% pooled HPDs or CDM supplemented with GFs, in comparison with 10-20% FBS, a majority of studies reported similar or superior in vitro proliferation and osteogenic differentiation, and in vivo bone formation in ectopic or orthotopic rodent models. Moreover, a trend for higher GF content was observed in PL versus PR, although evidence for cell culture efficacy is limited. In summary, humanized supplements seem at least equally effective as FBS for hMSC expansion and osteogenic differentiation. Although pooled HPDs appear to be the most favorable supplement for large-scale hMSC expansion, further efforts are needed to standardize the preparation and composition of these products in compliance with cGMP standards.
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Affiliation(s)
- Siddharth Shanbhag
- 1 Department of Clinical Dentistry, Centre for Clinical Dental Research, University of Bergen , Bergen, Norway
| | - Andreas Stavropoulos
- 2 Department of Periodontology, Faculty of Odontology, Malmö University , Malmö, Sweden
| | - Salwa Suliman
- 1 Department of Clinical Dentistry, Centre for Clinical Dental Research, University of Bergen , Bergen, Norway
| | - Tor Hervig
- 3 Department of Immunology and Transfusion Medicine, Haukeland University Hospital , Bergen, Norway
| | - Kamal Mustafa
- 1 Department of Clinical Dentistry, Centre for Clinical Dental Research, University of Bergen , Bergen, Norway
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Drug-Loadable Calcium Alginate Hydrogel System for Use in Oral Bone Tissue Repair. Int J Mol Sci 2017; 18:ijms18050989. [PMID: 28481253 PMCID: PMC5454902 DOI: 10.3390/ijms18050989] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 05/01/2017] [Accepted: 05/02/2017] [Indexed: 01/23/2023] Open
Abstract
This study developed a drug-loadable hydrogel system with high plasticity and favorable biological properties to enhance oral bone tissue regeneration. Hydrogels of different calcium alginate concentrations were prepared. Their swelling ratio, degradation time, and bovine serum albumin (BSA) release rate were measured. Human periodontal ligament cells (hPDLCs) and bone marrow stromal cells (BMSCs) were cultured with both calcium alginate hydrogels and polylactic acid (PLA), and then we examined the proliferation of cells. Inflammatory-related factor gene expressions of hPDLCs and osteogenesis-related gene expressions of BMSCs were observed. Materials were implanted into the subcutaneous tissue of rabbits to determine the biosecurity properties of the materials. The materials were also implanted in mandibular bone defects and then scanned using micro-CT. The calcium alginate hydrogels caused less inflammation than the PLA. The number of mineralized nodules and the expression of osteoblast-related genes were significantly higher in the hydrogel group compared with the control group. When the materials were implanted in subcutaneous tissue, materials showed favorable biocompatibility. The calcium alginate hydrogels had superior osteoinductive bone ability to the PLA. The drug-loadable calcium alginate hydrogel system is a potential bone defect reparation material for clinical dental application.
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Shanbhag S, Pandis N, Mustafa K, Nyengaard JR, Stavropoulos A. Cell Cotransplantation Strategies for Vascularized Craniofacial Bone Tissue Engineering: A Systematic Review and Meta-Analysis of Preclinical In Vivo Studies. TISSUE ENGINEERING PART B-REVIEWS 2016; 23:101-117. [PMID: 27733094 DOI: 10.1089/ten.teb.2016.0283] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The regenerative potential of tissue-engineered bone constructs may be enhanced by in vitro coculture and in vivo cotransplantation of vasculogenic and osteogenic (progenitor) cells. The objective of this study was to systematically review the literature to answer the focused question: In animal models, does cotransplantation of osteogenic and vasculogenic cells enhance bone regeneration in craniofacial defects, compared with solely osteogenic cell-seeded constructs? Following PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines, electronic databases were searched for controlled animal studies reporting cotransplantation of endothelial cells (ECs) with mesenchymal stem cells (MSCs) or osteoblasts in craniofacial critical size defect (CSD) models. Twenty-two studies were included comparing outcomes of MSC/scaffold versus MSC+EC/scaffold (co)transplantation in calvarial (n = 15) or alveolar (n = 7) CSDs of small (rodents, rabbits) and large animal (minipigs, dogs) models. On average, studies presented with an unclear to high risk of bias. MSCs were derived from autologous, allogeneic, xenogeneic, or human (bone marrow, adipose tissue, periosteum) sources; in six studies, ECs were derived from MSCs by endothelial differentiation. In most studies, MSCs and ECs were cocultured in vitro (2-17 days) before implantation. Coculture enhanced MSC osteogenic differentiation and an optimal MSC:EC seeding ratio of 1:1 was identified. Alloplastic copolymer or composite scaffolds were most often used for in vivo implantation. Random effects meta-analyses were performed for histomorphometric and radiographic new bone formation (%NBF) and vessel formation in rodents' calvarial CSDs. A statistically significant benefit in favor of cotransplantation versus MSC-only transplantation for radiographic %NBF was observed in rat calvarial CSDs (weighted mean difference 7.80% [95% confidence interval: 1.39-14.21]); results for histomorphometric %NBF and vessel formation were inconclusive. Overall, heterogeneity in the meta-analyses was high (I2 > 80%). In summary, craniofacial bone regeneration is enhanced by cotransplantation of vasculogenic and osteogenic cells. Although the direction of treatment outcome is in favor of cotransplantation strategies, the magnitude of treatment effect does not seem to be of relevance, unless proven otherwise in clinical studies.
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Affiliation(s)
- Siddharth Shanbhag
- 1 Department of Clinical Dentistry, Centre for Clinical Dental Research, University of Bergen , Bergen, Norway .,2 Department of Periodontology, Faculty of Odontology, Malmö University , Malmö, Sweden
| | - Nikolaos Pandis
- 3 Department of Orthodontics and Dentofacial Orthopedics, School of Dental Medicine, University of Bern , Bern, Switzerland
| | - Kamal Mustafa
- 1 Department of Clinical Dentistry, Centre for Clinical Dental Research, University of Bergen , Bergen, Norway
| | - Jens R Nyengaard
- 4 Stereology and Electron Microscopy Laboratory, Department of Clinical Medicine, Aarhus University , Aarhus, Denmark
| | - Andreas Stavropoulos
- 2 Department of Periodontology, Faculty of Odontology, Malmö University , Malmö, Sweden
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