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Zhang B, He Z, Zhao H, Gao H, Zhang Z, Gao Z, Ke K. Evaluating the efficacy of recombinant human growth factors in scar remodelling for patients with facial soft tissue injuries. Int Wound J 2024; 21:e14649. [PMID: 38272796 PMCID: PMC10789918 DOI: 10.1111/iwj.14649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024] Open
Abstract
Facial soft tissue injuries, often resulting in scarring, pose a challenge in reconstructive and aesthetic surgery due to the need for functional and aesthetic restoration. This study evaluates the efficacy of recombinant human growth factors (rhGFs) in scar remodelling for such injuries. A retrospective evaluation was conducted from January 2020 to January 2023, involving 100 patients with facial soft tissue injuries. Participants were divided equally into a control group, receiving standard cosmetic surgical repair, and an observation group, treated with rhGFs supplemented cosmetic surgery. The study assessed scar characteristics (pigmentation, pliability, vascularity, height), hospital stay duration, tissue healing time, complication rates and patient satisfaction. The observation group demonstrated significant improvements in all scar characteristics, with notably better pigmentation, pliability, vascularity and height compared with the control group. The rhGF treatment also resulted in reduced hospital stay duration and faster tissue healing. Notably, the total complication rate was significantly lower in the observation group (10%) compared with the control group (34%). Additionally, patient satisfaction levels were higher in the observation group, with 98% combined satisfaction compared with 76% in the control group. The application of rhGFs in treating facial soft tissue injuries significantly enhances scar remodelling, expedites healing, reduces complications and improves patient satisfaction. These findings establish rhGFs as a valuable tool in the management of facial soft tissue injuries, highlighting their potential in improving both functional and aesthetic outcomes.
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Affiliation(s)
- Baiyu Zhang
- The First Department of UrologyThe First Affiliated Hospital of Kunming Medical UniversityKunmingChina
- Yunnan Province Clinical Research Center for Chronic Kidney DiseaseKunmingChina
| | - Zonghai He
- The First Department of UrologyThe First Affiliated Hospital of Kunming Medical UniversityKunmingChina
| | - Hui Zhao
- The First Department of UrologyThe First Affiliated Hospital of Kunming Medical UniversityKunmingChina
| | - Hongbin Gao
- The First Department of UrologyThe First Affiliated Hospital of Kunming Medical UniversityKunmingChina
| | - Zhiying Zhang
- The First Department of UrologyThe First Affiliated Hospital of Kunming Medical UniversityKunmingChina
| | - Zhenhua Gao
- The First Department of UrologyThe First Affiliated Hospital of Kunming Medical UniversityKunmingChina
- Yunnan Province Clinical Research Center for Chronic Kidney DiseaseKunmingChina
| | - Kunbin Ke
- The First Department of UrologyThe First Affiliated Hospital of Kunming Medical UniversityKunmingChina
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2
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Ivanovski S, Breik O, Carluccio D, Alayan J, Staples R, Vaquette C. 3D printing for bone regeneration: challenges and opportunities for achieving predictability. Periodontol 2000 2023; 93:358-384. [PMID: 37823472 DOI: 10.1111/prd.12525] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 07/18/2023] [Accepted: 08/26/2023] [Indexed: 10/13/2023]
Abstract
3D printing offers attractive opportunities for large-volume bone regeneration in the oro-dental and craniofacial regions. This is enabled by the development of CAD-CAM technologies that support the design and manufacturing of anatomically accurate meshes and scaffolds. This review describes the main 3D-printing technologies utilized for the fabrication of these patient-matched devices, and reports on their pre-clinical and clinical performance including the occurrence of complications for vertical bone augmentation and craniofacial applications. Furthermore, the regulatory pathway for approval of these devices is discussed, highlighting the main hurdles and obstacles. Finally, the review elaborates on a variety of strategies for increasing bone regeneration capacity and explores the future of 4D bioprinting and biodegradable metal 3D printing.
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Affiliation(s)
- Saso Ivanovski
- School of Dentistry, Centre for Orofacial Regeneration, Reconstruction and Rehabilitation (COR3), The University of Queensland, Queensland, Herston, Australia
| | - Omar Breik
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, Queensland, Australia
| | - Danilo Carluccio
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, Queensland, Australia
| | - Jamil Alayan
- School of Dentistry, Centre for Orofacial Regeneration, Reconstruction and Rehabilitation (COR3), The University of Queensland, Queensland, Herston, Australia
| | - Ruben Staples
- School of Dentistry, Centre for Orofacial Regeneration, Reconstruction and Rehabilitation (COR3), The University of Queensland, Queensland, Herston, Australia
| | - Cedryck Vaquette
- School of Dentistry, Centre for Orofacial Regeneration, Reconstruction and Rehabilitation (COR3), The University of Queensland, Queensland, Herston, Australia
- Herston Biofabrication Institute, Metro North Hospital and Health Service, Brisbane, Queensland, Australia
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3
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Shen C, Witek L, Flores RL, Tovar N, Torroni A, Coelho PG, Kasper FK, Wong M, Young S. Three-Dimensional Printing for Craniofacial Bone Tissue Engineering. Tissue Eng Part A 2020; 26:1303-1311. [PMID: 32842918 DOI: 10.1089/ten.tea.2020.0186] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The basic concepts from the fields of biology and engineering are integrated into tissue engineering to develop constructs for the repair of damaged and/or absent tissues, respectively. The field has grown substantially over the past two decades, with particular interest in bone tissue engineering (BTE). Clinically, there are circumstances in which the quantity of bone that is necessary to restore form and function either exceeds the patient's healing capacity or bone's intrinsic regenerative capabilities. Vascularized osseous or osteocutaneous free flaps are the standard of care with autologous bone remaining the gold standard, but is commonly associated with donor site morbidity, graft resorption, increased operating time, and cost. Regardless of the size of a craniofacial defect, from trauma, pathology, and osteonecrosis, surgeons and engineers involved with reconstruction need to consider the complex three-dimensional (3D) geometry of the defect and its relationship to local structures. Three-dimensional printing has garnered significant attention and presents opportunities to use craniofacial BTE as a technology that offers a personalized approach to bony reconstruction. Clinicians and engineers are able to work together to produce patient-specific space-maintaining scaffolds tailored to site-specific defects, which are osteogenic, osseoconductive, osseoinductive, encourage angiogenesis/vasculogenesis, and mechanically stable upon implantation to prevent immediate failure. In this work, we review biological and engineering principles important in applying 3D printing technology to BTE for craniofacial reconstruction as well as present recent translational advancements in 3D printed bioactive ceramic scaffold technology.
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Affiliation(s)
- Chen Shen
- Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine, New York, New York, USA
| | - Lukasz Witek
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, New York, USA.,Department of Biomedical Engineering and New York University Tandon School of Engineering, Brooklyn, New York, USA
| | - Roberto L Flores
- Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine, New York, New York, USA
| | - Nick Tovar
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, New York, USA
| | - Andrea Torroni
- Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine, New York, New York, USA
| | - Paulo G Coelho
- Hansjörg Wyss Department of Plastic Surgery, New York University School of Medicine, New York, New York, USA.,Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, New York, USA.,Department of Mechanical and Aerospace Engineering, New York University Tandon School of Engineering, Brooklyn, New York, USA
| | - F Kurtis Kasper
- Department of Orthodontics and School of Dentistry, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Mark Wong
- Department of Oral and Maxillofacial Surgery, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Simon Young
- Department of Oral and Maxillofacial Surgery, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, Texas, USA
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4
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Brierly GI, Ren J, Baldwin J, Saifzadeh S, Theodoropoulos C, Tsurkan MV, Lynham A, Hsu E, Nikolarakos D, Werner C, Woodruff MA, Hutmacher DW, Bray LJ. Investigation of Sustained BMP Delivery in the Prevention of Medication-Related Osteonecrosis of the Jaw (MRONJ) in a Rat Model. Macromol Biosci 2019; 19:e1900226. [PMID: 31549786 DOI: 10.1002/mabi.201900226] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/21/2019] [Indexed: 01/06/2023]
Abstract
Medication-related osteonecrosis of the jaw (MRONJ) poses an ongoing challenge for clinicians and researchers. Currently, there is a lack of preventative measures available for at-risk patients undergoing tooth extractions, especially those with prior bisphosphonate treatment due to osteoporosis or bone metastasis diagnoses. Here, these issues are addressed using a preventative tissue engineering strategy against MRONJ development. This study evaluates the efficacy of a poly(ethylene glycol)-heparin hydrogel as a tool for the delivery of arginylglycylaspartic acid (RGD) and recombinant human bone morphogenic protein-2 (rhBMP-2). Three groups of skeletally mature rats each receive two doses of intravenous zoledronic acid prior to surgery and undergo extraction of the right first mandibular molar with gingival closure. Experimental groups either have the sockets left empty, filled with hydrogel minus rhBMP-2, or filled with hydrogel plus rhBMP-2. Eight weeks postoperatively specimens are analyzed using radiological, histological, and scanning electron microscopy (SEM) techniques. µCT analysis shows increased bone formation with hydrogel/rhBMP-2 delivery compared to the empty socket. Hydrogel-treated groups display increased presence of osteocytes and increased osteoclastic action compared to the empty sockets. These results represent the first step toward improved delivery of rhBMP-2 and a potential MRONJ preventative for patients undergoing bisphosphonate treatment.
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Affiliation(s)
- Gary I Brierly
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,Royal Brisbane and Women's Hospital, Butterfield Street, Herston, Queensland, 4006, Australia
| | - Jiongyu Ren
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, 2 George Street, Brisbane, Queensland, 4001, Australia
| | - Jeremy Baldwin
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, 2 George Street, Brisbane, Queensland, 4001, Australia
| | - Siamak Saifzadeh
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, 2 George Street, Brisbane, Queensland, 4001, Australia
| | - Christina Theodoropoulos
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, 2 George Street, Brisbane, Queensland, 4001, Australia
| | - Mikhail V Tsurkan
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,Leibniz Institute of Polymer Research Dresden e.V., Max Bergmann Center for Biomaterials, Hohe Straße 6, 01069, Dresden, Saxony, Germany
| | - Anthony Lynham
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, 2 George Street, Brisbane, Queensland, 4001, Australia
| | - Edward Hsu
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,Royal Brisbane and Women's Hospital, Butterfield Street, Herston, Queensland, 4006, Australia
| | - Dimitrios Nikolarakos
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,Gold Coast University Hospital, 1 Hospital Boulevard, Southport, Queensland, 4215, Australia
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden e.V., Max Bergmann Center for Biomaterials, Hohe Straße 6, 01069, Dresden, Saxony, Germany.,Center for Regenerative Therapies Dresden, Technische Universität Dresden, Fetscherstraße 105, 01307, Dresden, Saxony, Germany
| | - Maria A Woodruff
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, 2 George Street, Brisbane, Queensland, 4001, Australia
| | - Dietmar W Hutmacher
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, 2 George Street, Brisbane, Queensland, 4001, Australia
| | - Laura J Bray
- Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Kelvin Grove, Queensland, 4059, Australia.,School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, 2 George Street, Brisbane, Queensland, 4001, Australia.,Leibniz Institute of Polymer Research Dresden e.V., Max Bergmann Center for Biomaterials, Hohe Straße 6, 01069, Dresden, Saxony, Germany
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5
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Orsini G, Pagella P, Putignano A, Mitsiadis TA. Novel Biological and Technological Platforms for Dental Clinical Use. Front Physiol 2018; 9:1102. [PMID: 30135661 PMCID: PMC6092501 DOI: 10.3389/fphys.2018.01102] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 07/23/2018] [Indexed: 12/27/2022] Open
Abstract
Human teeth have a limited capacity to regenerate and thus biological reconstruction of damaged or lost dental tissues remains a significant challange in modern dentistry. Recent efforts focus on alternative therapeutic approaches for partial or whole tooth regeneration that complement traditional dental treatments using sophisticated materials and dental implants. These multidisciplinary approaches are based on the combination of stem cells with advanced tissue engineer products and computing technology, and they hold great promise for future applications in dentistry. The administration to patients of dynamic biological agents composed by stem cells and scaffolds will certainly increase the regenerative capacity of dental pathological tissues. The design of innovative materials for tissue restoration, diagnostics, imaging, and targeted pharmaceutical treatment will significantly improve the quality of dental care and will have a major societal impact. This review depicts the current challenges in dentistry and describes the possibilities for novel and succesful therapeutic applications in the near future.
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Affiliation(s)
- Giovanna Orsini
- Orofacial Development and Regeneration, Institute of Oral Biology, Center of Dental Medicine, Faculty of Medicine, University of Zurich, Zurich, Switzerland
- Department of Clinical Sciences and Stomatology, Marche Polytechnic University, Ancona, Italy
| | - Pierfrancesco Pagella
- Orofacial Development and Regeneration, Institute of Oral Biology, Center of Dental Medicine, Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Angelo Putignano
- Department of Clinical Sciences and Stomatology, Marche Polytechnic University, Ancona, Italy
| | - Thimios A. Mitsiadis
- Orofacial Development and Regeneration, Institute of Oral Biology, Center of Dental Medicine, Faculty of Medicine, University of Zurich, Zurich, Switzerland
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6
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Limirio PHJO, Rocha FS, Batista JD, Guimarães-Henriques JC, de Melo GB, Dechichi P. The Effect of Local Delivery Doxycycline and Alendronate on Bone Repair. AAPS PharmSciTech 2016; 17:872-7. [PMID: 26381914 DOI: 10.1208/s12249-015-0411-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 09/02/2015] [Indexed: 11/30/2022] Open
Abstract
The aim of the present study was to investigate the local effect of 10% doxycycline and 1% alendronate combined with poly(lactic-co-glycolic acid) (PLGA) on bone repair. Thirty rats were divided into three groups, as follows: control group (CG), drug group (DG), and vehicle-PLGA group (VG). Bone defect was created in the right femur and filled with the following: blood clot (CG); PLGA gel, 10% doxycycline and 1% alendronate (DG); or vehicle-PLGA (VG). The animals were euthanized 7 or 15 days after surgery. Bone density, bone matrix and number of osteoclasts were quantified. At 7 days, the findings showed increased density in DG (177.75 ± 76.5) compared with CG (80.37 ± 27.4), but no difference compared with VG (147.1 ± 41.5); no statistical difference in bone neoformation CG (25.6 ± 4.8), VG (27.8 ± 4), and DG (18.9 ± 7.8); and decrease osteoclasts in DG (4.6 ± 1.9) compared with CG (26.7 ± 7.4) and VG (17.3 ± 2.7). At 15 days, DG (405.1 ± 63.1) presented higher density than CG (213.2 ± 60.9) and VG (283.4 ± 85.8); there was a significant increase in percentage of bone neoformation in DG (31.5 ± 4.2) compared with CG (23 ± 4), but no difference compared with VG (25.1 ± 2.9). There was a decreased number of osteoclasts in DG (20.7 ± 4.7) and VG (29.5 ± 5.4) compared with CG (40 ± 9.4). The results suggest that the association of 10% doxycycline and 1% alendronate with PLGA-accelerated bone repair.
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7
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Brierly GI, Tredinnick S, Lynham A, Woodruff MA. Critical Sized Mandibular Defect Regeneration in Preclinical In Vivo Models. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/s40610-016-0036-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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8
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Mele L, Vitiello PP, Tirino V, Paino F, De Rosa A, Liccardo D, Papaccio G, Desiderio V. Changing Paradigms in Cranio-Facial Regeneration: Current and New Strategies for the Activation of Endogenous Stem Cells. Front Physiol 2016; 7:62. [PMID: 26941656 PMCID: PMC4764712 DOI: 10.3389/fphys.2016.00062] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 02/09/2016] [Indexed: 12/20/2022] Open
Abstract
Craniofacial area represent a unique district of human body characterized by a very high complexity of tissues, innervation and vascularization, and being deputed to many fundamental function such as eating, speech, expression of emotions, delivery of sensations such as taste, sight, and earing. For this reasons, tissue loss in this area following trauma or for example oncologic resection, have a tremendous impact on patients' quality of life. In the last 20 years regenerative medicine has emerged as one of the most promising approach to solve problem related to trauma, tissue loss, organ failure etc. One of the most powerful tools to be used for tissue regeneration is represented by stem cells, which have been successfully implanted in different tissue/organs with exciting results. Nevertheless, both autologous and allogeneic stem cell transplantation raise many practical and ethical concerns that make this approach very difficult to apply in clinical practice. For this reason different cell free approaches have been developed aiming to the mobilization, recruitment, and activation of endogenous stem cells into the injury site avoiding exogenous cells implant but instead stimulating patients' own stem cells to repair the lesion. To this aim many strategies have been used including functionalized bioscaffold, controlled release of stem cell chemoattractants, growth factors, BMPs, Platelet-Rich-Plasma, and other new strategies such as ultrasound wave and laser are just being proposed. Here we review all the current and new strategies used for activation and mobilization of endogenous stem cells in the regeneration of craniofacial tissue.
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Affiliation(s)
- Luigi Mele
- Department of Experimental Medicine, Section of Biotechnology and Medical Histology and Embryology, Second University of Naples Naples, Italy
| | - Pietro Paolo Vitiello
- Medical Oncology, Dipartimento Medico-Chirurgico di Internistica Clinica e Sperimentale "F. Magrassi e A. Lanzara," Second University of Naples Naples, Italy
| | - Virginia Tirino
- Department of Experimental Medicine, Section of Biotechnology and Medical Histology and Embryology, Second University of Naples Naples, Italy
| | - Francesca Paino
- Department of Experimental Medicine, Section of Biotechnology and Medical Histology and Embryology, Second University of Naples Naples, Italy
| | - Alfredo De Rosa
- Department of Odontology and Surgery, Second University of Naples Naples, Italy
| | - Davide Liccardo
- Department of Experimental Medicine, Section of Biotechnology and Medical Histology and Embryology, Second University of Naples Naples, Italy
| | - Gianpaolo Papaccio
- Department of Experimental Medicine, Section of Biotechnology and Medical Histology and Embryology, Second University of Naples Naples, Italy
| | - Vincenzo Desiderio
- Department of Experimental Medicine, Section of Biotechnology and Medical Histology and Embryology, Second University of Naples Naples, Italy
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Smith BT, Shum J, Wong M, Mikos AG, Young S. Bone Tissue Engineering Challenges in Oral & Maxillofacial Surgery. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 881:57-78. [PMID: 26545744 DOI: 10.1007/978-3-319-22345-2_4] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Over the past decades, there has been a substantial amount of innovation and research into tissue engineering and regenerative approaches for the craniofacial region. This highly complex area presents many unique challenges for tissue engineers. Recent research indicates that various forms of implantable biodegradable scaffolds may play a beneficial role in the clinical treatment of craniofacial pathological conditions. Additionally, the direct delivery of bioactive molecules may further increase de novo bone formation. While these strategies offer an exciting glimpse into potential future treatments, there are several challenges that still must be overcome. In this chapter, we will highlight both current surgical approaches for craniofacial reconstruction and recent advances within the field of bone tissue engineering. The clinical challenges and limitations of these strategies will help contextualize and inform future craniofacial tissue engineering strategies.
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Affiliation(s)
- Brandon T Smith
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Jonathan Shum
- Department of Oral and Maxillofacial Surgery, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Mark Wong
- Department of Oral and Maxillofacial Surgery, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Antonios G Mikos
- Department of Bioengineering, Rice University, Houston, TX, USA.,Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, USA
| | - Simon Young
- Department of Oral and Maxillofacial Surgery, University of Texas Health Science Center at Houston, Houston, TX, USA.
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Controlled release of granulocyte colony-stimulating factor enhances osteoconductive and biodegradable properties of Beta-tricalcium phosphate in a rat calvarial defect model. Int J Biomater 2014; 2014:134521. [PMID: 24829581 PMCID: PMC4009298 DOI: 10.1155/2014/134521] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 11/27/2013] [Accepted: 11/27/2013] [Indexed: 12/12/2022] Open
Abstract
Autologous bone grafts remain the gold standard for the treatment of congenital craniofacial disorders; however, there are potential problems including donor site morbidity and limitations to the amount of bone that can be harvested. Recent studies suggest that granulocyte colony-stimulating factor (G-CSF) promotes fracture healing or osteogenesis. The purpose of the present study was to investigate whether topically applied G-CSF can stimulate the osteoconductive properties of beta-tricalcium phosphate (β-TCP) in a rat calvarial defect model. A total of 27 calvarial defects 5 mm in diameter were randomly divided into nine groups, which were treated with various combinations of a β-TCP disc and G-CSF in solution form or controlled release system using gelatin hydrogel. Histologic and histomorphometric analyses were performed at eight weeks postoperatively. The controlled release of low-dose (1 μg and 5 μg) G-CSF significantly enhanced new bone formation when combined with a β-TCP disc. Moreover, administration of 5 μg G-CSF using a controlled release system significantly promoted the biodegradable properties of β-TCP. In conclusion, the controlled release of 5 μg G-CSF significantly enhanced the osteoconductive and biodegradable properties of β-TCP. The combination of G-CSF slow-release and β-TCP is a novel and promising approach for treating pediatric craniofacial bone defects.
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11
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Recent developments of functional scaffolds for craniomaxillofacial bone tissue engineering applications. ScientificWorldJournal 2013; 2013:863157. [PMID: 24163634 PMCID: PMC3791836 DOI: 10.1155/2013/863157] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 07/14/2013] [Indexed: 12/15/2022] Open
Abstract
Autogenous bone grafting remains a gold standard for the reconstruction critical-sized bone defects in the craniomaxillofacial region. Nevertheless, this graft procedure has several disadvantages such as restricted availability, donor-site morbidity, and limitations in regard to fully restoring the complicated three-dimensional structures in the craniomaxillofacial bone. The ultimate goal of craniomaxillofacial bone reconstruction is the regeneration of the physiological bone that simultaneously fulfills both morphological and functional restorations. Developments of tissue engineering in the last two decades have brought such a goal closer to reality. In bone tissue engineering, the scaffolds are fundamental, elemental and mesenchymal stem cells/osteoprogenitor cells and bioactive factors. A variety of scaffolds have been developed and used as spacemakers, biodegradable bone substitutes for transplanting to the new bone, matrices of drug delivery system, or supporting structures enhancing adhesion, proliferation, and matrix production of seeded cells according to the circumstances of the bone defects. However, scaffolds to be clinically completely satisfied have not been developed yet. Development of more functional scaffolds is required to be applied widely to cranio-maxillofacial bone defects. This paper reviews recent trends of scaffolds for crania-maxillofacial bone tissue engineering, including our studies.
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12
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Perrien DS, Young CS, Alvarez-Urena PP, Dean DD, Lynch SE, Hollinger JO. Percutaneous injection of augment injectable bone graft (rhPDGF-BB and β-tricalcium phosphate [β-TCP]/bovine type I collagen matrix) increases vertebral bone mineral density in geriatric female baboons. Spine J 2013; 13:580-6. [PMID: 23541446 DOI: 10.1016/j.spinee.2013.02.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 10/11/2012] [Accepted: 02/20/2013] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Recombinant human platelet-derived growth factor-BB (rhPDGF-BB) homodimer is a chemotactic, mitogenic, and angiogenic factor expressed by platelets. This biological triad is profoundly important in the bone regenerative cascade. Therefore, the expectation was that rhPDGF-BB locally administered to designated lumbar vertebrae in a soluble Type I bovine collagen/β-tricalcium phosphate (β-TCP) injectable paste would have an osteoanabolic effect. PURPOSE The study objective focused on safety and efficacy of the rhPDGF-BB and soluble Type I bovine collagen/β-TCP to increase bone density when injected directly into specific lumbar vertebral bodies in elderly (17- to 18-year-old) female baboons. STUDY DESIGN/SETTING The study was designed to determine whether vertebral bone mineral density (BMD) in aged female baboons could be increased by locally administering recombinant rhPDGF-BB combined in a soluble Type I bovine collagen/β-TCP paste formulation. METHODS A total of six baboons were divided equally into two groups. Group 1 received 1.0 mg/mL rhPDGF-BB in 20 mM sodium acetate plus soluble Type I bovine collagen/β-TCP. Group 2 was treated with 20 mM sodium acetate plus soluble Type I bovine collagen/β-TCP. Baboons in each group also received a sham surgery. Surgery was conducted using a percutaneous, fluoroscopically guided approach, and quantitative computed tomography (qCT) and radiographs were done at dedicated time periods. The qCT was used to determine volumetric BMD (vBMD). At euthanasia (36-week posttreatment), lumbar vertebrae were recovered and analyzed by qCT scans and histology. Funds were received to support this work from BioMimetic Therapeutics, Inc. The device that is the subject of this manuscript is not Food Drug Administration approved for this indication and is not commercially available in the United States. RESULTS The qCT and histopathological data suggested that vBMD and bone morphology increased significantly in the lumbar vertebrae treated with the rhPDGF-BB-containing composition. CONCLUSIONS Bone mineral density and bone morphology quality of lumbar vertebrae in aged female baboons were improved by direct injection of rhPDGF-BB in a soluble Type I bovine collagen/β-TCP paste. Throughout the course of the study, there were neither local nor systemic adverse effects.
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Affiliation(s)
- Daniel S Perrien
- BioMimetic Therapeutics, Inc., 389 Nichol Mill Lane, Franklin, TN 37067, USA
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