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Crush J, Hussain A, Seah KTM, Khan WS. Bioactive Glass: Methods for Assessing Angiogenesis and Osteogenesis. Front Cell Dev Biol 2021; 9:643781. [PMID: 34195185 PMCID: PMC8236622 DOI: 10.3389/fcell.2021.643781] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 05/19/2021] [Indexed: 11/13/2022] Open
Abstract
Biomaterials are playing an increased role in the regeneration of damaged or absent bone tissue in the context of trauma, non-union, infection or congenital abnormality. Restoration of not only the physical scaffold that bone provides, but also of its homeostatic functions as a calcium store and hematopoietic organ are the gold standards of any regenerative procedure. Bioactive glasses are of interest as they can bond with the host bone and induce further both bone and blood vessel growth. The composition of the bioactive glasses can be manipulated to maximize both osteogenesis and angiogenesis, producing a 3D scaffolds that induce bone growth whilst also providing a structure that resists physiological stresses. As the primary endpoints of studies looking at bioactive glasses are very often the ability to form substantial and healthy tissues, this review will focus on the methods used to study and quantify osteogenesis and angiogenesis in bioactive glass experiments. These methods are manifold, and their accuracy is of great importance in identifying plausible future bioactive glasses for clinical use.
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Affiliation(s)
- Jos Crush
- Division of Trauma and Orthopaedic Surgery, University of Cambridge, Cambridge, United Kingdom
| | - Ali Hussain
- Division of Trauma and Orthopaedic Surgery, University of Cambridge, Cambridge, United Kingdom
| | - K T M Seah
- Division of Trauma and Orthopaedic Surgery, University of Cambridge, Cambridge, United Kingdom
| | - Wasim S Khan
- Division of Trauma and Orthopaedic Surgery, University of Cambridge, Cambridge, United Kingdom
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Sun B, Liu Y, Huang W, Zhang Q, Lin J, Li W, Zhang J, Chen F. Functional identification of a rare vascular endothelial growth factor a ( VEGFA) variant associating with the nonsyndromic cleft lip with/without cleft palate. Bioengineered 2021; 12:1471-1483. [PMID: 33947308 PMCID: PMC8806239 DOI: 10.1080/21655979.2021.1912547] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Vascular endothelial growth factor A (VEGFA) is a crucial growth factor, which participates in multiple processes of human growth and development, such as angiogenesis and osteogenesis and is also necessary for development of palate. The purpose of this study was to investigate the effect of a rare VEGFA mutation (NM_001025366.2 773 T > C p.Val258Ala) on the cell functions and osteogenesis. Here, we found that the VEGFA mutation has adverse effects on the function of human embryonic palatal plate mesenchymal (HEPM) cells, and may affect the development of palate. The VEGFA mutation has adverse effects on promoting cell proliferation and migration and inhibiting apoptosis in HEPM and HEK–293 cells. In addition, the mutant VEGFA allele has a negative influence on osteogenesis. Taken together, the rare variant of the VEGFA gene had an adverse effect on cell functions and osteogenesis, which may impact the development of the palate. And these findings suggested that VEGFA mutation (c.773 T > C) may lead to nonsyndromic cleft lip with or without cleft palate and also provide a new insight into the mechanism of VEGFA gene in osteogenesis and palatogenesis.
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Affiliation(s)
- Bohui Sun
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Yangjia Liu
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
| | - Wenbin Huang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Qian Zhang
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
| | - Jiuxiang Lin
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Weiran Li
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Jieni Zhang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, China
| | - Feng Chen
- Central Laboratory, Peking University School and Hospital of Stomatology, Beijing, China
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Exploring the Biomaterial-Induced Secretome: Physical Bone Substitute Characteristics Influence the Cytokine Expression of Macrophages. Int J Mol Sci 2021; 22:ijms22094442. [PMID: 33923149 PMCID: PMC8123010 DOI: 10.3390/ijms22094442] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/16/2021] [Accepted: 04/21/2021] [Indexed: 11/17/2022] Open
Abstract
In addition to their chemical composition various physical properties of synthetic bone substitute materials have been shown to influence their regenerative potential and to influence the expression of cytokines produced by monocytes, the key cell-type responsible for tissue reaction to biomaterials in vivo. In the present study both the regenerative potential and the inflammatory response to five bone substitute materials all based on β-tricalcium phosphate (β-TCP), but which differed in their physical characteristics (i.e., granule size, granule shape and porosity) were analyzed for their effects on monocyte cytokine expression. To determine the effects of the physical characteristics of the different materials, the proliferation of primary human osteoblasts growing on the materials was analyzed. To determine the immunogenic effects of the different materials on human peripheral blood monocytes, cells cultured on the materials were evaluated for the expression of 14 pro- and anti-inflammatory cytokines, i.e., IL-6, IL-10, IL-1β, VEGF, RANTES, IL-12p40, I-CAM, IL-4, V-CAM, TNF-α, GM-CSF, MIP-1α, Il-8 and MCP-1 using a Bio-Plex® Multiplex System. The granular shape of bone substitutes showed a significant influence on the osteoblast proliferation. Moreover, smaller pore sizes, round granular shape and larger granule size increased the expression of GM-CSF, RANTES, IL-10 and IL-12 by monocytes, while polygonal shape and the larger pore sizes increased the expression of V-CAM. The physical characteristics of a bone biomaterial can influence the proliferation rate of osteoblasts and has an influence on the cytokine gene expression of monocytes in vitro. These results indicate that the physical structure of a biomaterial has a significant effect of how cells interact with the material. Thus, specific characteristics of a material may strongly affect the regenerative potential in vivo.
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Wang X, Mei L, Jin M, Jiang X, Li X, Li J, Xu Y, Meng Z, Zhu J, Wu F. Composite Coating of Graphene Oxide/TiO2 Nanotubes/HHC-36 Antibacterial Peptide Construction and an Exploration of Its Bacteriostat and Osteogenesis Effects. J Biomed Nanotechnol 2021; 17:662-676. [PMID: 35057892 DOI: 10.1166/jbn.2021.3013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Graphene oxide (GO), a kind of polymer, is often selected as a controlled released agent, whereas titanium dioxide (TiO2) nanotubes are commonly used as a drug-coated carrier. This study was conducted to develop methods for manufacturing the GO/TiO2/HHC-36 composite
coating and exploring its bacteriostat and osteogenesis properties. The GO/TiO2 nanotubes were prepared by electrochemical methods and HHC-36 was then adsorbed to GO/TiO2to obtain GO/TiO2/HHC-36. Sustained release of HHC-36 was analyzed and the antibacterial
effect was examined by the inhibition zone test. The biocompatibility and osteogenesis in vitro of GO/TiO2/HHC-36 were explored. Finally, the osteogenesic property of the composite coating was investigated in a rat femoral defect model in vivo. GO/TiO2/HHC-36
was successfully prepared and had good controlled released performance in vitro. The inhibit zone size of S. aureus was 2.1 mm and that of E. coli was 3.0 mm. GO/TiO2/HHC-36 showed good biocompatibility with mesenchymal stem cells (MSCs) and promoted their adhesion,
migration, and differentiation. In addition, the secretion of alkaline phosphatase, collagen, mineralized matrix and osteoblast-related nutrient factors of MSCs was increased after treatment with GO/TiO2/HHC-36. Furthermore, GO/TiO2/HHC-36 also stimulated endotheliocytes
to secrete VEGF, leading to angiogenesis. Finally, implantation of GO/TiO2/HHC-36 in the rat femur defect model resulted in MSC migration and increased expression of osteoblast related proteins. The composite coating with controlled released of HHC-36 showed distinct antibacterial
properties and promoted osteogenesis in vitro and in vivo.
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Affiliation(s)
- Xiaojun Wang
- Department of Orthopedics, Huzhou Traditional Chinese Medicine Hospital, Affiliated Hospital to Zhejiang Chinese Medical University, Huzhou 313000, P. R.China
| | - Lina Mei
- Department of Internal Medicine, Huzhou Maternity & Child Health Care Hospital, Huzhou 313000, P. R. China
| | - Mingchao Jin
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Central Hospital of Huzhou University, Huzhou Hospital of Zhejiang University, Huzhou 313000, P. R. China
| | - Xuesheng Jiang
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Central Hospital of Huzhou University, Huzhou Hospital of Zhejiang University, Huzhou 313000, P. R. China
| | - Xiongfeng Li
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Central Hospital of Huzhou University, Huzhou Hospital of Zhejiang University, Huzhou 313000, P. R. China
| | - Jianyou Li
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Central Hospital of Huzhou University, Huzhou Hospital of Zhejiang University, Huzhou 313000, P. R. China
| | - Yan Xu
- Department of Rehabilitation, Huzhou Central Hospital, Affiliated Central Hospital of Huzhou University, Huzhou Hospital of Zhejiang University, Huzhou 313000, P. R. China
| | - Zhipeng Meng
- Department of Anesthesiology, Huzhou Central Hospital, Affiliated Central Hospital of Huzhou University, Huzhou Hospital of Zhejiang University, Huzhou 313000, P. R. China
| | - Junkun Zhu
- Orthopedics Rehabilitation Department, Lishui Municipal Central Hospital, Lishui 323000, P. R. China
| | - Fengfeng Wu
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Central Hospital of Huzhou University, Huzhou Hospital of Zhejiang University, Huzhou 313000, P. R. China
- Department of Rehabilitation, Huzhou Central Hospital, Affiliated Central Hospital of Huzhou University, Huzhou Hospital of Zhejiang
University, Huzhou 313000, P. R. China
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Makvandi P, Josic U, Delfi M, Pinelli F, Jahed V, Kaya E, Ashrafizadeh M, Zarepour A, Rossi F, Zarrabi A, Agarwal T, Zare EN, Ghomi M, Kumar Maiti T, Breschi L, Tay FR. Drug Delivery (Nano)Platforms for Oral and Dental Applications: Tissue Regeneration, Infection Control, and Cancer Management. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2004014. [PMID: 33898183 PMCID: PMC8061367 DOI: 10.1002/advs.202004014] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 12/12/2020] [Indexed: 05/09/2023]
Abstract
The oral cavity and oropharynx are complex environments that are susceptible to physical, chemical, and microbiological insults. They are also common sites for pathological and cancerous changes. The effectiveness of conventional locally-administered medications against diseases affecting these oral milieus may be compromised by constant salivary flow. For systemically-administered medications, drug resistance and adverse side-effects are issues that need to be resolved. New strategies for drug delivery have been investigated over the last decade to overcome these obstacles. Synthesis of nanoparticle-containing agents that promote healing represents a quantum leap in ensuring safe, efficient drug delivery to the affected tissues. Micro/nanoencapsulants with unique structures and properties function as more favorable drug-release platforms than conventional treatment approaches. The present review provides an overview of newly-developed nanocarriers and discusses their potential applications and limitations in various fields of dentistry and oral medicine.
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Affiliation(s)
- Pooyan Makvandi
- Chemistry Department, Faculty of ScienceShahid Chamran University of AhvazAhvaz6153753843Iran
| | - Uros Josic
- Department of Biomedical and Neuromotor SciencesUniversity of BolognaVia San Vitale 59Bologna40125Italy
| | - Masoud Delfi
- Department of Chemical SciencesUniversity of Naples “Federico II”Complesso Universitario Monte S. Angelo, Via CintiaNaples80126Italy
| | - Filippo Pinelli
- Department of Chemistry, Materials and Chemical EngineeringPolitecnico di Milano Technical UniversityMilano20133Italy
| | - Vahid Jahed
- Biomedical Engineering Division, Faculty of Chemical EngineeringTarbiat Modares UniversityTehranIran
| | - Emine Kaya
- Faculty of DentistryIstanbul Okan UniversityTuzla CampusTuzlaIstanbul34959Turkey
| | - Milad Ashrafizadeh
- Faculty of Engineering and Natural SciencesSabanci UniversityOrta Mahalle, Üniversite Caddesi No. 27, OrhanlıTuzlaIstanbul34956Turkey
- Sabanci University Nanotechnology Research and Application Center (SUNUM)TuzlaIstanbul34956Turkey
| | - Atefeh Zarepour
- Sabanci University Nanotechnology Research and Application Center (SUNUM)TuzlaIstanbul34956Turkey
| | - Filippo Rossi
- Department of Chemistry, Materials and Chemical EngineeringPolitecnico di Milano Technical UniversityMilano20133Italy
| | - Ali Zarrabi
- Sabanci University Nanotechnology Research and Application Center (SUNUM)TuzlaIstanbul34956Turkey
| | - Tarun Agarwal
- Department of BiotechnologyIndian Institute of Technology KharagpurKharagpurWest Bengal721302India
| | | | - Matineh Ghomi
- Chemistry Department, Faculty of ScienceShahid Chamran University of AhvazAhvaz6153753843Iran
| | - Tapas Kumar Maiti
- Department of BiotechnologyIndian Institute of Technology KharagpurKharagpurWest Bengal721302India
| | - Lorenzo Breschi
- Department of Biomedical and Neuromotor SciencesUniversity of BolognaVia San Vitale 59Bologna40125Italy
| | - Franklin R Tay
- The Dental College of GeorgiaAugusta University1430 John Wesley Gilbert DriveAugustaGA30192USA
- The Graduate SchoolAugusta UniversityAugustaGA30912USA
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Heksch R, Bowden S, Hoffman R. Novel function of adrenocorticotropic hormone in the stimulation of vascular endothelial growth factor release in healthy children and adolescents: a proof-of-concept study. Ann Pediatr Endocrinol Metab 2021; 26:46-52. [PMID: 33541031 PMCID: PMC8026337 DOI: 10.6065/apem.2040110.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 09/28/2020] [Indexed: 11/20/2022] Open
Abstract
PURPOSE To assess the effect of adrenocorticotropic hormone (ACTH) on plasma vascular endothelial growth factor (VEGF) levels in healthy children and adolescents and to inform future work on the effects of ACTH on VEGF in bone. METHODS An Institutional Review Board-approved prospective study of 10 healthy subjects, ages 9-17, was conducted to assess the effect of ACTH on plasma VEGF levels. VEGF levels were collected at baseline and every 30 minutes for 3 hours. Cosyntropin (a synthetic ACTH analogue) was administered at a low-dose (1 μg) given at t=0 minutes and a high-dose (250 μg) given at t=60 minutes. A Friedman test was performed comparing baseline to peak VEGF levels after stimulation with low-dose and high-dose cosyntropin. RESULTS Peak plasma VEGF levels significantly increased after high-dose cosyntropin compared with baseline (P=0.042). Peak plasma VEGF levels did not significantly increase after low-dose cosyntropin compared to baseline. CONCLUSION To our knowledge, this is the first study to demonstrate that ACTH administration causes a significant increase in plasma VEGF levels in humans. This finding may have important implications in the protective effects of ACTH on bone. Decreased bone mineral density and adrenal suppression are common side effects of glucocorticoid use in pediatrics. VEGF increases vascularity and may play a role in reducing glucocorticoid-induced bone disease. Animal studies have shown that ACTH stimulates release of VEGF in osteoblasts, though this effect has yet to be evaluated in humans.
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Affiliation(s)
- Ryan Heksch
- Nationwide Children's Hospital, Columbus, OH, USA,Akron Children's Hospital, Akron, OH, USA,Address for correspondence: Ryan Heksch Department of Pediatric Endocrinology and Diabetes, Akron Children’s Hospital, 215 W. Bowery St., Akron, OH, 44308, USA
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Lam ATL, Lee AP, Jayaraman P, Tan KY, Raghothaman D, Lim HL, Cheng H, Zhou L, Tan AHM, Reuveny S, Oh S. Multiomics analyses of cytokines, genes, miRNA, and regulatory networks in human mesenchymal stem cells expanded in stirred microcarrier-spinner cultures. Stem Cell Res 2021; 53:102272. [PMID: 33676128 DOI: 10.1016/j.scr.2021.102272] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 01/19/2021] [Accepted: 02/21/2021] [Indexed: 01/09/2023] Open
Abstract
Mesenchymal stem cells (MSCs) are of great clinical interest as a form of allogenic therapy due to their excellent regenerative and immunomodulatory effects for various therapeutic indications. Stirred suspension bioreactors using microcarriers (MC) have been used for large-scale production of MSCs compared to planar cultivation systems. Previously, we have demonstrated that expansion of MSCs in MC-spinner cultures improved chondrogenic, osteogenic, and cell migration potentials as compared to monolayer-static cultures. In this study, we sought to address this by analyzing global gene expression patterns, miRNA profiles and secretome under both monolayer-static and MC-spinner cultures in serum-free medium at different growth phases. The datasets revealed differential expression patterns that correlated with potentially improved MSC properties in cells from MC-spinner cultures compared to those of monolayer-static cultures. Transcriptome analysis identified a unique expression signature for cells from MC-spinner cultures, which correlated well with miRNA expression, and cytokine secretion involved in key MSC functions. Importantly, MC-spinner cultures and conditioned medium showed increased expression of factors that possibly enhance pathways of extracellular matrix dynamics, cellular metabolism, differentiation potential, immunoregulatory function, and wound healing. This systematic analysis provides insights for the efficient optimization of stem cell bioprocessing and infers that MC-based bioprocess manufacturing could improve post-expansion cellular properties for stem cell therapies.
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Affiliation(s)
- Alan Tin-Lun Lam
- Bioprocessing Technology Institute (BTI), Agency for Science, Technology and Research (A*STAR), Singapore.
| | - Alison P Lee
- Bioprocessing Technology Institute (BTI), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Premkumar Jayaraman
- Bioprocessing Technology Institute (BTI), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Kah Yong Tan
- Bioprocessing Technology Institute (BTI), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Deepak Raghothaman
- Bioprocessing Technology Institute (BTI), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Hsueh Lee Lim
- Bioprocessing Technology Institute (BTI), Agency for Science, Technology and Research (A*STAR), Singapore
| | - He Cheng
- MiRXES, 2 Tukang Innovation Grove, JTC MedTech Hub, Singapore
| | - Lihan Zhou
- MiRXES, 2 Tukang Innovation Grove, JTC MedTech Hub, Singapore
| | - Andy Hee-Meng Tan
- Bioprocessing Technology Institute (BTI), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Shaul Reuveny
- Bioprocessing Technology Institute (BTI), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Steve Oh
- Bioprocessing Technology Institute (BTI), Agency for Science, Technology and Research (A*STAR), Singapore.
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58
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Cheah E, Wu Z, Thakur SS, O'Carroll SJ, Svirskis D. Externally triggered release of growth factors - A tissue regeneration approach. J Control Release 2021; 332:74-95. [PMID: 33600882 DOI: 10.1016/j.jconrel.2021.02.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 02/10/2021] [Accepted: 02/11/2021] [Indexed: 12/22/2022]
Abstract
Tissue regeneration aims to achieve functional restoration following injury by creating an environment to enable the body to self-repair. Strategies for regeneration rely on the introduction of biomaterial scaffolding, cells and bioactive molecules into the body, at or near the injury site. Of these bioactive molecules, growth factors (GFs) play a pivotal role in directing regenerative pathways for many cell populations. However, the therapeutic use of GFs has been limited by the complexity of biological injury and repair, and the properties of the GFs themselves, including their short half-life, poor tissue penetration, and off-target side effects. Externally triggered delivery systems have the potential to facilitate the delivery of GFs into the target tissues with considerations of the timing, sequence, amount, and location of GF presentation. This review briefly discusses the challenges facing the therapeutic use of GFs, then, we discuss approaches to externally trigger GF release from delivery systems categorised by stimulation type; ultrasound, temperature, light, magnetic fields and electric fields. Overall, while the use of GFs for tissue regeneration is still in its infancy, externally controlled GF delivery technologies have the potential to achieve robust and effective solutions to present GFs to injured tissues. Future technological developments must occur in conjunction with a comprehensive understanding of the biology at the injury site to ensure translation of promising technologies into real world benefit.
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Affiliation(s)
- Ernest Cheah
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Zimei Wu
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Sachin S Thakur
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Simon J O'Carroll
- Department of Anatomy and Medical Imaging, School of Medical Sciences, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Darren Svirskis
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand.
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Bozo IY, Drobyshev AY, Redko NA, Komlev VS, Isaev AA, Deev RV. Bringing a Gene-Activated Bone Substitute Into Clinical Practice: From Bench to Bedside. Front Bioeng Biotechnol 2021; 9:599300. [PMID: 33614609 PMCID: PMC7889956 DOI: 10.3389/fbioe.2021.599300] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 01/11/2021] [Indexed: 12/27/2022] Open
Abstract
Bone grafting and reconstruction are still challenging in clinical practice because of the limitations of bone autografts and the drawbacks of currently approved bone substitutes. We thus developed a gene-activated bone substitute based on octacalcium phosphate and naked plasmid DNA carrying the vascular endothelial growth factor gene. This advanced combined therapy medicinal product had no cytotoxic effects in vitro, slightly decreased bone marrow mesenchymal stromal cell (MSC) doubling time, and was characterized by a prolonged level of gene construct delivery in vivo in a luciferase bioimaging assay. In the model of critically sized cranial bone defects in rabbits, the gene-activated matrix increased bone tissue formation through angiogenesis induction. After preclinical studies, we conducted an open-label non-randomized clinical trial (NCT03076138). The primary study outcome was the proportion of patients with newly formed bone tissue within the surgical area as measured by computed tomography within 6 months after surgery. The main secondary outcomes included frequencies of adverse events (AEs) and serious adverse events (SAEs) as well as the surgical failure rate. After completing the clinical trial, the patients had dental implants placed in the bone grafting area, and trephine biopsy samples were collected. In total, 20 patients with alveolar ridge atrophy (n = 16) and jaw bone defects (n = 4) were enrolled in the study. There were no AEs or SAEs during the clinical trial or the follow-up period (30 months). In all patients, newly formed tissues with a bone density of 908.13 ± 114.40 HU were detected within the zone of bone grafting. There were no significant differences between the subgroups of patients with atrophy and bone defects: 915.28 ± 125.85 and 879.56 ± 48.36 HU, respectively (p = 0.60). Histological analysis showed that the bone grafting area comprised newly formed bone tissue with some fragments of the gene-activated bone substitute partially resorbed and integrated with bone, without fibrous tissue in between. The preclinical data and clinical trial results proved the feasibility, safety, and efficacy of the investigated material for jaw bone grafting, allowing us to bring the world's first gene-activated bone substitute from bench to bedside.
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Affiliation(s)
- Ilia Y Bozo
- Department of Maxillofacial Surgery, A. I. Burnazyan Federal Medical Biophysical Center, Federal Medical Biological Agency of Russia, Moscow, Russia.,Histograft, LLC, Moscow, Russia
| | - Alexey Y Drobyshev
- Department of Maxillofacial and Plastic Surgery, A. I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - Nikolay A Redko
- Department of Maxillofacial and Plastic Surgery, A. I. Yevdokimov Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - Vladimir S Komlev
- A. A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
| | | | - Roman V Deev
- Human Stem Cells Institute, Moscow, Russia.,Department of Pathology, I. I. Mechnikov North-Western State Medical University, Saint Petersburg, Russia
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Kawaguchi M, Segawa A, Shintani K, Nakamura Y, Ishigaki Y, Yonezawa K, Sasamoto T, Kaneuji A, Kawahara N. Bone formation at Ti-6Al-7Nb scaffolds consisting of 3D honeycomb frame and diamond-like carbon coating implanted into the femur of beagles. J Biomed Mater Res B Appl Biomater 2021; 109:1283-1291. [PMID: 33427407 DOI: 10.1002/jbm.b.34789] [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: 05/01/2020] [Revised: 12/10/2020] [Accepted: 12/15/2020] [Indexed: 01/08/2023]
Abstract
We fabricated Ti-6Al-7Nb bone scaffolds with 5 mm diameter and 20 mm length comprise of a three-dimensional (3D) honeycomb frame structure of truncated octahedra created by selective laser sintering 3D printing. The honeycomb frame was then coated with 0.1 μm thick diamond-like carbon (DLC) to increase biocompatibility. A round rod of Ti-6Al-7Nb alloy (ASTM F1295) was as a control material. They were implanted into the femur bones of beagles to evaluate bone morphometrics and to investigate changes in the transcriptome of the new bone tissue using DNA microarray analysis and real-time polymerase chain reaction (PCR). In the present report, the 3D honeycomb material with and without DLC film consisting of a-C:H is referred to as 3D_a-C:H and 3D_non, respectively. At 3 weeks after implantation, the 3D_non had more contact between the new and artificial bones compared with the control, and the 3D_a-C:H had more contact between the new and artificial bones compared with the control and 3D_non. Furthermore, 3D_a-C:H showed even more new bone compared with the control and 3D_non. At 8 weeks after implantation, more appeared lamellar bone with the 3D_a-C:H implant than those with the control and 3D_non. The real-time PCR results at 1 week of implantation revealed higher expression levels of VEGF, RANKL, and NOTCH2 expression with 3D_a-C:H than with 3D_non and control. As a result of real-time PCR at 2 weeks of implantation, OPN and CTSK expressions were found to be higher with 3D_a-C:H and 3D_non than that with the control.
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Affiliation(s)
- Masahito Kawaguchi
- Department of Orthopedic Surgery, Kanazawa Medical University, Kahoku, Ishikawa, Japan
| | - Ayumu Segawa
- Department of Mechanical Engineering, Kanazawa Institute of Technology, Hakusan, Ishikawa, Japan
| | - Kazuhiro Shintani
- Department of Mechanical Engineering, Kanazawa Institute of Technology, Hakusan, Ishikawa, Japan
| | - Yuka Nakamura
- Medical Research Institute, Kanazawa Medical University, Kahoku, Ishikawa, Japan
| | - Yasuhito Ishigaki
- Medical Research Institute, Kanazawa Medical University, Kahoku, Ishikawa, Japan
| | - Katsutaka Yonezawa
- Department of Orthopedic Surgery, Kanazawa Medical University, Kahoku, Ishikawa, Japan
| | - Takeshi Sasamoto
- Department of Orthopedic Surgery, Kanazawa Medical University, Kahoku, Ishikawa, Japan
| | - Ayumi Kaneuji
- Department of Orthopedic Surgery, Kanazawa Medical University, Kahoku, Ishikawa, Japan
| | - Norio Kawahara
- Department of Orthopedic Surgery, Kanazawa Medical University, Kahoku, Ishikawa, Japan
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Lee EJ, Jain M, Alimperti S. Bone Microvasculature: Stimulus for Tissue Function and Regeneration. TISSUE ENGINEERING PART B-REVIEWS 2020; 27:313-329. [PMID: 32940150 DOI: 10.1089/ten.teb.2020.0154] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Bone is a highly vascularized organ, providing structural support to the body, and its development, regeneration, and remodeling depend on the microvascular homeostasis. Loss or impairment of vascular function can develop diseases, such as large bone defects, avascular necrosis, osteoporosis, osteoarthritis, and osteopetrosis. In this review, we summarize how vasculature controls bone development and homeostasis in normal and disease cases. A better understanding of this process will facilitate the development of novel disease treatments that promote bone regeneration and remodeling. Specifically, approaches based on tissue engineering components, such as stem cells and growth factors, have demonstrated the capacity to induce bone microvasculature regeneration and mineralization. This knowledge will have relevant clinical implications for the treatment of bone disorders by developing novel pharmaceutical approaches and bone grafts. Finally, the tissue engineering approaches incorporating vascular components may widely be applied to treat other organ diseases by enhancing their regeneration capacity. Impact statement Bone vasculature is imperative in the process of bone development, regeneration, and remodeling. Alterations or disruption of the bone vasculature leads to loss of bone homeostasis and the development of bone diseases. In this study, we review the role of vasculature on bone diseases and how vascular tissue engineering strategies, with a detailed emphasis on the role of stem cells and growth factors, will contribute to bone therapeutics.
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Affiliation(s)
- Eun-Jin Lee
- American Dental Association Science and Research Institute, Gaithersburg, Maryland, USA
| | - Mahim Jain
- Kennedy Krieger Institute, John Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Stella Alimperti
- American Dental Association Science and Research Institute, Gaithersburg, Maryland, USA
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Chen J, Chen X, Huang X, Huang G, Gao Z, Wang W, Liu H. Genome-wide analysis of intermuscular bone development reveals changes of key genes expression and signaling pathways in blunt snout bream (Megalobrama amblycephala). Genomics 2020; 113:654-663. [PMID: 33011328 DOI: 10.1016/j.ygeno.2020.09.062] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/28/2020] [Accepted: 09/29/2020] [Indexed: 11/28/2022]
Abstract
Intermuscular bone (IB) is a hard-boned spicule exist in lower teleost, which brings a lot of detrimental effects on palatability and economic value of blunt snout bream (Megalobrama amblycephala). Masson trichrome staining for ossific IB indicated that some osteoblasts appeared at the edge of the bone matrix and a few osteocytes are present in the center of the mineralized bone matrix. By comparing the orthologous gene families of fish with IBs and without IBs, we screened the key signaling pathways associated with IB formation. Furthermore, the transcriptomic data demonstrated the functional importance of these gene families. The candidate genes involved in chondrocyte development were highly expressed in stage 1 compared with stage 2 and stage 3, suggesting that the development process of IB might mainly involve in intramembranous ossification. Our research reveals the molecular mechanism of IBs formation, and provides molecular evidence for the further study on intermuscular boneless stains.
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Affiliation(s)
- Jing Chen
- College of Fisheries, Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education/Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China
| | - Xiuli Chen
- Guangxi Academy of Fishery Sciences, Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi, Nanning 530021, China
| | - Xin Huang
- College of Fisheries, Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education/Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China
| | - Guanghua Huang
- Guangxi Academy of Fishery Sciences, Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi, Nanning 530021, China
| | - Zexia Gao
- College of Fisheries, Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education/Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China
| | - Weimin Wang
- College of Fisheries, Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education/Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China
| | - Han Liu
- College of Fisheries, Key Lab of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education/Key Lab of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China.
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Cruz MA, Fernandes KR, Parisi JR, Vale GCA, Junior SRA, Freitas FR, Sales AFS, Fortulan CA, Peitl O, Zanotto E, Granito RN, Ribeiro AM, Renno ACM. Marine collagen scaffolds and photobiomodulation on bone healing process in a model of calvaria defects. J Bone Miner Metab 2020; 38:639-647. [PMID: 32303916 DOI: 10.1007/s00774-020-01102-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 03/23/2020] [Indexed: 01/30/2023]
Abstract
INTRODUCTION Collagen from marine esponges has been used as a promising material for tissue engineering proposals. Similarly, photobiomodulation (PBM) is able of modulating inflammatory processes after an injury, accelerating soft and hard tissue healing and stimulating neoangiogenesis. However, the effects of the associated treatments on bone tissue healing have not been studied yet. In this context, the present study aimed to evaluate the biological temporal modifications (using two experimental periods) of marine sponge collagen or sponging (SPG) based scaffold and PBM on newly formed bone using a calvaria bone defect model. MATERIAL AND METHODS Wistar rats were distributed into two groups: SPG or SPG/PBM and euthanized into two different experimental periods (15 and 45 days post-surgery). A cranial critical bone defect was used to evaluate the effects of the treatments. Histology, histomorfometry and immunohistological analysis were performed. RESULTS Histological findings demonstrated that SPG/PBM-treated animals, 45 days post-surgery, demonstrated a higher amount of connective and newly formed bone tissue at the region of the defect compared to CG. Notwithstanding, no difference among groups were observed in the histomorphometry. Interestingly, for both anti-transforming growth factor-beta (TGF-β) and anti-vascular endothelial growth factor (VEGF) immunostaining, higher values for SPG/PBM, at 45 days post-surgery could be observed. CONCLUSION It can be concluded that the associated treatment can be considered as a promising therapeutical intervention.
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Affiliation(s)
- M A Cruz
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil.
| | - K R Fernandes
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil
| | - J R Parisi
- Department of Fisiotherapy, Federal University of São Carlos (UFSCar), São Carlos, Brazil
| | - G C A Vale
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil
| | - S R A Junior
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil
| | - F R Freitas
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil
| | - A F S Sales
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil
| | - C A Fortulan
- Department of Fisiotherapy, Federal University of São Carlos (UFSCar), São Carlos, Brazil
| | - O Peitl
- Department of Fisiotherapy, Federal University of São Carlos (UFSCar), São Carlos, Brazil
| | - E Zanotto
- Department of Fisiotherapy, Federal University of São Carlos (UFSCar), São Carlos, Brazil
| | - R N Granito
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil
| | - A M Ribeiro
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil
| | - A C M Renno
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, Brazil
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64
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Oryan A, Hassanajili S, Sahvieh S, Azarpira N. Effectiveness of mesenchymal stem cell-seeded onto the 3D polylactic acid/polycaprolactone/hydroxyapatite scaffold on the radius bone defect in rat. Life Sci 2020; 257:118038. [PMID: 32622947 DOI: 10.1016/j.lfs.2020.118038] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 06/24/2020] [Accepted: 06/29/2020] [Indexed: 12/22/2022]
Abstract
PURPOSE The importance of regeneration in large bone defects forces the orthopedic surgeons to search for a proper methodology. The present experiment evaluated the capability of polylactic acid/polycaprolactone/hydroxyapatite (PLA/PCL/HA) scaffold loaded with and without mesenchymal stem cells (MSCs) on bone regeneration. METHODS Fourier transform infrared spectrometry, X-ray diffraction, scanning electron microscopy, and rheology methodologies were used to characterize the scaffold. Forty Wistar rats were randomly divided into the four groups including the untreated defects as the control group and three other groups in which the bone defects were treated with autologous bones (autograft group), the PLA/PCL/HA scaffolds (PLA/PCL/HA group), and the MSCs-seeded scaffolds (MSCs-seeded PLA/PCL/HA group). RESULTS Based on the qRT-PCR results, significantly higher expression levels of osteocalcin, osteopontin, and CD31 were seen in the cell-seeded scaffold group compared to the control group (P < 0.05). The CT scanning and radiographic images depicted significantly more newly formed bonny tissue in the MSCs-loaded scaffold and autograft groups than the untreated group (P < 0.001). The immunohistochemistry, biomechanical, histopathologic, and histomorphometric evaluations demonstrated significantly improved regeneration in the autograft and MSCs-loaded scaffold groups compared to the non-treated group (P < 0.05). There were significant differences between the scaffold and untreated groups in all in vivo evaluations (P < 0.05). CONCLUSION The MSCs enhanced bone healing potential of the PLA/PCL/HA scaffold and the MSCs-seeded scaffold was comparable to the autograft as the golden treatment regimen (P > 0.05).
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Affiliation(s)
- A Oryan
- Department of Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran.
| | - S Hassanajili
- Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran
| | - S Sahvieh
- Department of Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - N Azarpira
- Transplant Research Center, Department of Pathology, Shiraz University of Medical Sciences, Shiraz, Iran
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65
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Carlisle P, Marrs J, Gaviria L, Silliman DT, Decker JF, Brown Baer P, Guda T. Quantifying Vascular Changes Surrounding Bone Regeneration in a Porcine Mandibular Defect Using Computed Tomography. Tissue Eng Part C Methods 2020; 25:721-731. [PMID: 31850839 DOI: 10.1089/ten.tec.2019.0205] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Angiogenesis is a critical process essential for optimal bone healing. Several in vitro and in vivo systems have been previously used to elucidate some of the mechanisms involved in the process of angiogenesis, and at the same time, to test potential therapeutic agents and bioactive factors that play important roles in neovascularization. Computed tomography (CT) is a noninvasive imaging technique that has recently allowed investigators to obtain a diverse range of high-resolution, three-dimensional characterization of structures, such as bone formation within bony defects. Unfortunately, to date, angiogenesis evaluation relies primarily on histology, or ex vivo imaging and few studies have utilized CT to qualitatively and quantitatively study the vascular response during bone repair. In the current study a clinical CT-based technique was used to evaluate the effects of rhBMP-2 eluting graft treatment on soft tissue vascular architecture surrounding a large segmental bone defect model in the minipig mandible. The objective of this study was to demonstrate the efficacy of contrast-enhanced, clinical 64-slice CT technology in extracting quantitative metrics of vascular architecture over a 12-week period. The results of this study show that the presence of rhBMP-2 had a positive effect on vessel volume from 4 to 12 weeks, which was explained by a concurrent increase in vessel number, which was also significantly higher at 4 weeks for the rhBMP-2 treatment. More importantly, analysis of vessel architecture showed no changes throughout the duration of the study, indicating therapeutic safety. This study validates CT analysis as a relevant imaging method for quantitative and qualitative analysis of morphological characteristics of vascular tissue around a bone healing site. Also important, the study shows that CT technology can be used in large animal models and potentially be translated into clinical models for the development of improved methods to evaluate tissue healing and vascular adaptation processes over the course of therapy. This methodology has demonstrated sensitivity to tracking spatial and temporal changes in vascularization and has the potential to be applied to studying changes in other high-contrast tissues as well. Impact Statement Tissue engineering solutions depend on the surrounding tissue response to support regeneration. The inflammatory environment and surrounding vascular supply are critical to determining if therapies will survive, engraftment occurs, and native physiology is restored. This study for the first time evaluates the blood vessel network changes in surrounding soft tissue to a bone defect site in a large animal model, using clinically available computed tomography tools and model changes in vessel number, size, and architecture. While this study focuses on rhBMP2 delivery impacting surrounding vasculature, this validated method can be extended to studying the vascular network changes in other tissues as well.
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Affiliation(s)
- Patricia Carlisle
- Dental Trauma and Research Detachment, United States Army Institute of Surgical Research, Fort Sam Houston, San Antonio, Texas.,Prytime Medical Devices, Inc., Boerne, Texas
| | - Jeffrey Marrs
- Dental Trauma and Research Detachment, United States Army Institute of Surgical Research, Fort Sam Houston, San Antonio, Texas.,School of Dentistry, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Laura Gaviria
- Department of Biomedical Engineering, University of Texas at San Antonio, Texas
| | - David T Silliman
- Dental Trauma and Research Detachment, United States Army Institute of Surgical Research, Fort Sam Houston, San Antonio, Texas
| | - John F Decker
- Dental Trauma and Research Detachment, United States Army Institute of Surgical Research, Fort Sam Houston, San Antonio, Texas
| | - Pamela Brown Baer
- Dental Trauma and Research Detachment, United States Army Institute of Surgical Research, Fort Sam Houston, San Antonio, Texas.,Clinical Operations and New Product Commercialization, GenCure, San Antonio, Texas
| | - Teja Guda
- Department of Biomedical Engineering, University of Texas at San Antonio, Texas
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66
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Bozo IY, Deev RV, Smirnov IV, Fedotov AY, Popov VK, Mironov AV, Mironova OA, Gerasimenko AY, Komlev VS. 3D Printed Gene-activated Octacalcium Phosphate Implants for Large Bone Defects Engineering. Int J Bioprint 2020; 6:275. [PMID: 33088987 PMCID: PMC7557339 DOI: 10.18063/ijb.v6i3.275] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 04/14/2020] [Indexed: 01/27/2023] Open
Abstract
The aim of the study was the development of three-dimensional (3D) printed gene-activated implants based on octacalcium phosphate (OCP) and plasmid DNA encoding VEGFA. The first objective of the present work involved design and fabrication of gene-activated bone substitutes based on the OCP and plasmid DNA with VEGFA gene using 3D printing approach of ceramic constructs, providing the control of its architectonics compliance to the initial digital models. X-ray diffraction, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy, and compressive strength analyses were applied to investigate the chemical composition, microstructure, and mechanical properties of the experimental samples. The biodegradation rate and the efficacy of plasmid DNA delivery in vivo were assessed during standard tests with subcutaneous implantation to rodents in the next stage. The final part of the study involved substitution of segmental tibia and mandibular defects in adult pigs with 3D printed gene-activated implants. Biodegradation, osteointegration, and effectiveness of a reparative osteogenesis were evaluated with computerized tomography, SEM, and a histological examination. The combination of gene therapy and 3D printed implants manifested the significant clinical potential for effective bone regeneration in large/critical size defect cases.
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Affiliation(s)
- Ilya Y Bozo
- Department of Maxillofacial Surgery, A.I. Burnazyan Federal Medical Biophysical Center, FMBA of Russia, Moscow, Russia.,Research and Development Department, Human Stem Cells Institute, Moscow, Russia
| | - Roman V Deev
- Research and Development Department, Human Stem Cells Institute, Moscow, Russia.,Department of Pathology, I.I. Mechnikov North-Western State Medical University, Saint-Petersburg, Russia
| | - Igor V Smirnov
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
| | - Alexander Yu Fedotov
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
| | - Vladimir K Popov
- Institute of Photon Technologies of Federal Scientific Research Centre "Crystallography and Photonics," Russian Academy of Sciences, Moscow, Russia
| | - Anton V Mironov
- Institute of Photon Technologies of Federal Scientific Research Centre "Crystallography and Photonics," Russian Academy of Sciences, Moscow, Russia
| | - Olga A Mironova
- Institute of Photon Technologies of Federal Scientific Research Centre "Crystallography and Photonics," Russian Academy of Sciences, Moscow, Russia
| | - Alexander Yu Gerasimenko
- Institute for Bionic Technologies and Engineering, I.M. Sechenov First Moscow State Medical University, Moscow, Russia.,Institute of Biomedical Systems, National Research University of Electronic Technology, Moscow, Russia
| | - Vladimir S Komlev
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia.,Institute of Photon Technologies of Federal Scientific Research Centre "Crystallography and Photonics," Russian Academy of Sciences, Moscow, Russia
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67
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Pal S, Rashid M, Singh SK, Porwal K, Singh P, Mohamed R, Gayen JR, Wahajuddin M, Chattopadhyay N. Skeletal restoration by phosphodiesterase 5 inhibitors in osteopenic mice: Evidence of osteoanabolic and osteoangiogenic effects of the drugs. Bone 2020; 135:115305. [PMID: 32126313 DOI: 10.1016/j.bone.2020.115305] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 02/12/2020] [Accepted: 02/28/2020] [Indexed: 12/16/2022]
Abstract
Phosphodiesterases (PDEs) hydrolyze cyclic nucleotides and thereby regulate diverse cellular functions. The reports on the skeletal effects of PDE inhibitors are conflicting. Here, we screened 17 clinically used non-xanthine PDE inhibitors (selective and non-selective) using mouse calvarial osteoblasts (MCO) where the readout was osteoblast differentiation. From this screen, we identified sildenafil and vardenafil (both PDE5 inhibitors) having the least osteogenic EC50. Both drugs significantly increased vascular endothelial growth factor (VEGF) and VEGF receptor 2 (VEGFR2) expressions in MCO and the nitric oxide synthase inhibitor L-NAME completely blocked VEGF expression induced by these drugs. Sunitinib, a tyrosine receptor kinase inhibitor that also blocks VEGFR2 blocked sildenafil-/vardenafil-induced osteoblast differentiation. At half of their human equivalent doses, i.e. 6.0 mg/kg sildenafil and 2.5 mg/kg vardenafil, the maximum bone marrow level of sildenafil was 32% and vardenafil was 21% of their blood levels. At these doses, both drugs enhanced bone regeneration at the femur osteotomy site and completely restored bone mass, microarchitecture, and strength in OVX mice. Furthermore, both drugs increased surface referent bone formation and serum bone formation marker (P1NP) without affecting the resorption marker (CTX-1). Both drugs increased the expression of VEGF and VEGFR2 in bones and osteoblasts and increased skeletal vascularity. Sunitinib completely blocked the bone restorative and vascular effects of sildenafil and vardenafil in OVX mice. Taken together, our study suggested that sildenafil and vardenafil at half of their adult human doses completely reversed osteopenia in OVX mice by an osteogenic mechanism that was associated with enhanced skeletal vascularity.
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Affiliation(s)
- Subhashis Pal
- Division of Endocrinology, Central Drug Research Institute (CDRI), Council of Scientific and Industrial Research (CSIR), Lucknow 226031, India
| | - Mamunur Rashid
- Pharmaceutics & Pharmacokinetics Division, CDRI-CSIR, Lucknow 226031, India
| | | | - Konica Porwal
- Division of Endocrinology, Central Drug Research Institute (CDRI), Council of Scientific and Industrial Research (CSIR), Lucknow 226031, India
| | - Priya Singh
- Division of Endocrinology, Central Drug Research Institute (CDRI), Council of Scientific and Industrial Research (CSIR), Lucknow 226031, India
| | - Riyazuddin Mohamed
- Pharmaceutics & Pharmacokinetics Division, CDRI-CSIR, Lucknow 226031, India
| | - Jiaur R Gayen
- Pharmaceutics & Pharmacokinetics Division, CDRI-CSIR, Lucknow 226031, India
| | | | - Naibedya Chattopadhyay
- Division of Endocrinology, Central Drug Research Institute (CDRI), Council of Scientific and Industrial Research (CSIR), Lucknow 226031, India.
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68
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Parisi JR, Fernandes KR, Aparecida do Vale GC, de França Santana A, de Almeida Cruz M, Fortulan CA, Zanotto ED, Peitl O, Granito RN, Rennó ACM. Marine spongin incorporation into Biosilicate® for tissue engineering applications: An in vivo study. J Biomater Appl 2020; 35:205-214. [PMID: 32362163 DOI: 10.1177/0885328220922161] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Biomaterials and bone grafts, with the ability of stimulating tissue growth and bone consolidation, have been emerging as very promising strategies to treat bone fractures. Despite its well-known positive effects of biosilicate (BS) on osteogenesis, its use as bone grafts in critical situations such as bone defects of high dimensions or in non-consolidated fractures may not be sufficient to stimulate tissue repair. Consequently, several approaches have been explored to improve the bioactivity of BS. A promising strategy to reach this aim is the inclusion of an organic part, such as collagen, in order to mimic bone structure. Thus, the present study investigated the biological effects of marine spongin (SPG)-enriched BS composites on the process of healing, using a critical experimental model of cranial bone defect in rats. Histopathological and immunohistochemistry analyzes were performed after two and six weeks of implantation to investigate the effects of the material on bone repair (supplemental material-graphical abstract). Histological analysis demonstrated that for both BS and BS/SPG, similar findings were observed, with signs of material degradation, the presence of granulation tissue along the defect area and newly formed bone into the area of the defect. Additionally, histomorphometry showed that the control group presented higher values for Ob.S/BS (%) and for N.Ob/T.Ar (mm2) (six weeks post-surgery) compared to BS/SPG and higher values of N.Ob/T.Ar (mm2) compared to BS (two weeks post-surgery). Moreover, BS showed higher values for OV/TV (%) compared to BS/SPG (six weeks post-surgery). Also, VEGF immunohistochemistry was increased for BS (two weeks post-surgery) and for BS/SPG (six weeks) compared to CG. TGFb immunostaining was higher for BS compared to CG. The results of this study demonstrated that the BS and BS/SPG scaffolds were biocompatible and able to support bone formation in a critical bone defect in rats. Moreover, an increased VEGF immunostaining was observed in BS/SPG.
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Affiliation(s)
- Julia Risso Parisi
- Department of Physiotherapy, Federal University of São Carlos (UFSCar), São Carlos, SP, Brazil
| | | | | | - Alan de França Santana
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, SP, Brazil
| | | | - Carlos Alberto Fortulan
- Department of Mechanical Engineering, São Carlos School of Engineering São Carlos, SP, Brazil
| | - Edgar Dutra Zanotto
- Department of Materials Engineering, Vitreous Materials Laboratory (LaMaV), Federal University of São Carlos (UFSCar), São Carlos, Brazil
| | - Oscar Peitl
- Department of Materials Engineering, Vitreous Materials Laboratory (LaMaV), Federal University of São Carlos (UFSCar), São Carlos, Brazil
| | - Renata Neves Granito
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Santos, SP, Brazil
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69
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Delfino MM, Guerreiro-Tanomaru JM, Tanomaru-Filho M, Sasso-Cerri E, Cerri PS. Immunoinflammatory response and bioactive potential of GuttaFlow bioseal and MTA Fillapex in the rat subcutaneous tissue. Sci Rep 2020; 10:7173. [PMID: 32346066 PMCID: PMC7188821 DOI: 10.1038/s41598-020-64041-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 12/06/2019] [Indexed: 12/29/2022] Open
Abstract
To evaluate the effect of GuttaFlow bioseal (GFB) and MTA Fillapex (MTAF) in comparison with Endofill (EF) in the subcutaneous tissue. Polyethylene tubes with GFB, MTAF, EF or empty tubes (control group; CG) were implanted into subcutaneous of rats. After 7, 15, 30 and 60 days, the capsule thickness, inflammatory reaction, interleukin-6 (IL-6), vascular endothelial growth factor (VEGF), caspase-3, TUNEL-positive cells, von Kossa and ultrastructural features were evaluated. The data were statistically analyzed (p ≤ 0.05). At all periods, the number of IL-6- and VEGF-immunolabelled cells, and capsule thickness were lower in GFB than MTAF, which was lower than EF (p < 0.0001). At 60 days, the number of inflammatory cells was similar in GFB and MTAF (p = 0.58). Significant differences in the number of TUNEL- and caspase-3-positive cells were not observed among GFB, MTAF and CG whereas the highest values were found in EF specimens. The EF specimens exhibited several cells with condensed chromatin, typical of apoptosis. von Kossa-positive and birefringent structures were only observed in GFB and MTAF, suggesting the presence of calcite crystals. Taken together, these results show that cellular and structural damage induced by GFB and MTAF sealers were recovery over time. Moreover, these sealers express bioactive potential in subcutaneous tissue.
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Affiliation(s)
- Mateus Machado Delfino
- Department of Restorative Dentistry, Dental School - São Paulo State University (UNESP), Araraquara, SP, Brazil
| | | | - Mário Tanomaru-Filho
- Department of Restorative Dentistry, Dental School - São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Estela Sasso-Cerri
- Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry - Laboratory of Histology and Embryology, Dental School - São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Paulo Sérgio Cerri
- Department of Morphology, Genetics, Orthodontics and Pediatric Dentistry - Laboratory of Histology and Embryology, Dental School - São Paulo State University (UNESP), Araraquara, SP, Brazil.
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Nossin Y, Farrell E, Koevoet WJLM, Somoza RA, Caplan AI, Brachvogel B, van Osch GJVM. Angiogenic Potential of Tissue Engineered Cartilage From Human Mesenchymal Stem Cells Is Modulated by Indian Hedgehog and Serpin E1. Front Bioeng Biotechnol 2020; 8:327. [PMID: 32363188 PMCID: PMC7180203 DOI: 10.3389/fbioe.2020.00327] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 03/25/2020] [Indexed: 12/26/2022] Open
Abstract
With rising demand for cartilage tissue repair and replacement, the differentiation of mesenchymal stem cells (BMSCs) into cartilage tissue forming cells provides a promising solution. Often, the BMSC-derived cartilage does not remain stable and continues maturing to bone through the process of endochondral ossification in vivo. Similar to the growth plate, invasion of blood vessels is an early hallmark of endochondral ossification and a necessary step for completion of ossification. This invasion originates from preexisting vessels that expand via angiogenesis, induced by secreted factors produced by the cartilage graft. In this study, we aimed to identify factors secreted by chondrogenically differentiated bone marrow-derived human BMSCs to modulate angiogenesis. The secretome of chondrogenic pellets at day 21 of the differentiation program was collected and tested for angiogenic capacity using in vitro endothelial migration and proliferation assays as well as the chick chorioallantoic membrane (CAM) assay. Taken together, these assays confirmed the pro-angiogenic potential of the secretome. Putative secreted angiogenic factors present in this medium were identified by comparative global transcriptome analysis between murine growth plate cartilage, human chondrogenic BMSC pellets and human neonatal articular cartilage. We then verified by PCR eight candidate angiogenesis modulating factors secreted by differentiated BMSCs. Among those, Serpin E1 and Indian Hedgehog (IHH) had a higher level of expression in BMSC-derived cartilage compared to articular chondrocyte derived cartilage. To understand the role of these factors in the pro-angiogenic secretome, we used neutralizing antibodies to functionally block them in the conditioned medium. Here, we observed a 1.4-fold increase of endothelial cell proliferation when blocking IHH and 1.5-fold by Serpin E1 blocking compared to unblocked control conditioned medium. Furthermore, endothelial migration was increased 1.9-fold by Serpin E1 blocking and 2.7-fold by IHH blocking. This suggests that the pro-angiogenic potential of chondrogenically differentiated BMSC secretome could be further augmented through inhibition of specific factors such as IHH and Serpin E1 identified as anti-angiogenic factors.
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Affiliation(s)
- Yannick Nossin
- Department of Otorhinolaryngology, Head and Neck Surgery, Erasmus MC, University Medical Center, Rotterdam, Netherlands
| | - Eric Farrell
- Department of Oral and Maxillofacial Surgery, Erasmus MC, University Medical Center, Rotterdam, Netherlands
| | - Wendy J L M Koevoet
- Department of Otorhinolaryngology, Head and Neck Surgery, Erasmus MC, University Medical Center, Rotterdam, Netherlands
| | - Rodrigo A Somoza
- Department of Biology, Skeletal Research Center, Case Western Reserve University, Cleveland, OH, United States.,Center for Multimodal Evaluation of Engineered-Cartilage, Case Western Reserve University, Cleveland, OH, United States
| | - Arnold I Caplan
- Department of Biology, Skeletal Research Center, Case Western Reserve University, Cleveland, OH, United States.,Center for Multimodal Evaluation of Engineered-Cartilage, Case Western Reserve University, Cleveland, OH, United States
| | - Bent Brachvogel
- Department of Pediatrics and Adolescent Medicine, Experimental Neonatology, Faculty of Medicine, University of Cologne, Cologne, Germany.,Faculty of Medicine, Center for Biochemistry, University of Cologne, Cologne, Germany
| | - Gerjo J V M van Osch
- Department of Otorhinolaryngology, Head and Neck Surgery, Erasmus MC, University Medical Center, Rotterdam, Netherlands.,Department of Orthopedics, Erasmus MC, University Medical Center, Rotterdam, Netherlands
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71
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Suyasa IK, Wiradewi Lestari AA. Low expression of vascular endothelial growth factor and high serum level of cyclic guanine monophosphate as the risk factors of femoral head osteonecrosis in alcohol-exposed Wistar rat. Chin J Traumatol 2020; 23:107-112. [PMID: 31980236 PMCID: PMC7156883 DOI: 10.1016/j.cjtee.2019.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 09/19/2019] [Accepted: 09/30/2019] [Indexed: 02/04/2023] Open
Abstract
PURPOSE Severe damage to the femoral head in patients with osteonecrosis has a high impact on morbidity. Despite early diagnosis, the treatment outcome is still unsatisfactory. This study aimed to explore the expression of vascular endothelial growth factor (VEGF) and cyclic guanine monophosphate (cGMP) serum level as the risk factors of femoral head osteonecrosis in alcohol-exposed Wistar rats. METHODS This was an experimental study using randomized post-test only control group design, with samples using 10-14 weeks Wistar male rats. Rats were then divided into 6 groups: 3 groups without intervention, and 3 groups with intervention using 40% alcohol given perorally. Each one group from intervention and control group was euthanized by the end of the week for 3 consecutive weeks. Proximal femurs were examined under microscope for osteonecrosis, immunohistochemically for VEGF, and blood serum for cGMP levels. RESULTS VEGF expression in the femoral head of alcohol-exposed Wistar rats was lower than those not exposed to alcohol (p < 0.005). Blood serum cGMP levels of alcohol-exposed Wistar rats were higher than those not exposed to alcohol (p < 0.005). The number of necrotic osteocytes in the femoral head of Wistar rats exposed to alcohol was greater than those not exposed to alcohol (p < 0.005). There are significant differences between VEGF, cGMP levels, and number of necrotic osteocytes in the control group and treatment at 1st, 2nd, and 3rd week (p < 0.005). CONCLUSIONS Based on the result of this study, VEGF and cGMP may be considered as diagnostic biomarkers for alcohol-induced femoral head osteonecrosis.
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Affiliation(s)
- I Ketut Suyasa
- Department of Orthopedic and Traumatology, Faculty of Medicine, Udayana University, Bali, Indonesia
| | - Anak Agung Wiradewi Lestari
- Department of Clinical Pathology, Faculty of Medicine, Udayana University, Bali, Indonesia,Corresponding author.
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72
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McLaughlin KI, Milne TJ, Zafar S, Zanicotti DG, Cullinan MP, Seymour GJ, Coates DE. The in vitro effect of VEGF receptor inhibition on primary alveolar osteoblast nodule formation. Aust Dent J 2020; 65:196-204. [PMID: 32072641 DOI: 10.1111/adj.12752] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2020] [Indexed: 11/30/2022]
Abstract
BACKGROUND Vascular endothelial growth factor (VEGF) is a master regulator and is required for the effective coupling of angiogenesis and osteogenesis supporting both skeletal development and postnatal bone repair. A direct role for VEGF in intramembranous-derived osteoblast growth and differentiation is not clear. We investigated the expression of primary alveolar osteoblast VEGF receptors and the subsequent effects on mineralization and nodule formation in vitro following VEGFR inhibition. METHODS Primary human alveolar osteoblasts (HAOBs) were cultured in the presence of VEGF receptor inhibitors, exogenous VEGF or the bisphosphonate, zoledronic acid. VEGF, VEGFR1 and VEGFR2 mRNA expression and nodule formation following 21 days of culture. VEGFR1 protein expression was examined using immunofluorescence after 48 h. RESULTS The HAOBs expressed high levels of VEGF and VEGFR1 protein but VEGFR2 was not detected. The VEGFR1/2 inhibitors, ZM306416 and KRN633, lead to a dose-dependent decrease in mineralization. Treatment with zoledronic acid showed no difference in HAOB VEGF receptor expression. CONCLUSION VEGF/VEGFR1 pathway appears to be important for intramembranous-derived osteoblast differentiation and maturation in vitro.
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Affiliation(s)
- K I McLaughlin
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - T J Milne
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - S Zafar
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - D G Zanicotti
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - M P Cullinan
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - G J Seymour
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - D E Coates
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
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73
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Casanova MR, Oliveira C, Fernandes EM, Reis RL, Silva TH, Martins A, Neves NM. Spatial immobilization of endogenous growth factors to control vascularization in bone tissue engineering. Biomater Sci 2020; 8:2577-2589. [DOI: 10.1039/d0bm00087f] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An engineered biofunctional system comprises endogenous BMP-2 and VEGF bound in a parallel pattern. It successfully enabled obtaining the spatial osteogenic and angiogenic differentiation of human hBM-MSCs under basal culture conditions.
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Affiliation(s)
- Marta R. Casanova
- 3B's Research Group
- I3Bs – Research Institute on Biomaterials
- Biodegradables and Biomimetics of University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco/Guimarães
| | - Catarina Oliveira
- 3B's Research Group
- I3Bs – Research Institute on Biomaterials
- Biodegradables and Biomimetics of University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco/Guimarães
| | - Emanuel M. Fernandes
- 3B's Research Group
- I3Bs – Research Institute on Biomaterials
- Biodegradables and Biomimetics of University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco/Guimarães
| | - Rui L. Reis
- 3B's Research Group
- I3Bs – Research Institute on Biomaterials
- Biodegradables and Biomimetics of University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco/Guimarães
| | - Tiago H. Silva
- 3B's Research Group
- I3Bs – Research Institute on Biomaterials
- Biodegradables and Biomimetics of University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco/Guimarães
| | - Albino Martins
- 3B's Research Group
- I3Bs – Research Institute on Biomaterials
- Biodegradables and Biomimetics of University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco/Guimarães
| | - Nuno M. Neves
- 3B's Research Group
- I3Bs – Research Institute on Biomaterials
- Biodegradables and Biomimetics of University of Minho
- Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine
- 4805-017 Barco/Guimarães
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74
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Wu L, Gu Y, Liu L, Tang J, Mao J, Xi K, Jiang Z, Zhou Y, Xu Y, Deng L, Chen L, Cui W. Hierarchical micro/nanofibrous membranes of sustained releasing VEGF for periosteal regeneration. Biomaterials 2020; 227:119555. [DOI: 10.1016/j.biomaterials.2019.119555] [Citation(s) in RCA: 119] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 09/26/2019] [Accepted: 10/15/2019] [Indexed: 01/15/2023]
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75
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Carrera-Pinzón AF, Márquez-Flórez K, Kraft RH, Ramtani S, Garzón-Alvarado DA. Computational model of a synovial joint morphogenesis. Biomech Model Mechanobiol 2019; 19:1389-1402. [PMID: 31863216 DOI: 10.1007/s10237-019-01277-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 12/08/2019] [Indexed: 11/30/2022]
Abstract
Joints enable the relative movement between the connected bones. The shape of the joint is important for the joint movements since they facilitate and smooth the relative displacement of the joint's parts. The process of how the joints obtain their final shape is yet not well understood. Former models have been developed in order to understand the joint morphogenesis leaning only on the mechanical environment; however, the obtained final anatomical shape does not match entirely with a realistic geometry. In this study, a computational model was developed with the aim of explaining how the morphogenesis of joints and shaping of ossification structures are achieved. For this model, both the mechanical and biochemical environments were considered. It was assumed that cartilage growth was controlled by cyclic hydrostatic stress and inhibited by octahedral shear stress. In addition, molecules such as PTHrP and Wnt promote chondrocyte proliferation and therefore cartilage growth. Moreover, the appearance of the primary and secondary ossification centers was also modeled, for which the osteogenic index and PTHrP-Ihh concentrations were taken into account. The obtained results from this model show a coherent final shape of an interphalangeal joint, which suggest that the mechanical and biochemical environments are crucial for the joint morphogenesis process.
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Affiliation(s)
| | - Kalenia Márquez-Flórez
- Department of Mechanical and Mechatronic Engineering, Universidad Nacional de Colombia, Bogotá, Colombia. .,Biomimetics Laboratory, Instituto de Biotecnología, Universidad Nacional de Colombia, Bogotá, Colombia. .,Numerical Methods and Modeling Research Group (GNUM), Universidad Nacional de Colombia, Bogotá, Colombia.
| | - Reuben H Kraft
- Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, USA.,Department of Biomedical Engineering, The Pennsylvania State University, University Park, USA
| | - Salah Ramtani
- Laboratoire CSPBAT, équipe LBPS, CNRS (UMR 7244), Université Paris 13, Villetaneuse, France
| | - Diego Alexander Garzón-Alvarado
- Department of Mechanical and Mechatronic Engineering, Universidad Nacional de Colombia, Bogotá, Colombia.,Biomimetics Laboratory, Instituto de Biotecnología, Universidad Nacional de Colombia, Bogotá, Colombia.,Numerical Methods and Modeling Research Group (GNUM), Universidad Nacional de Colombia, Bogotá, Colombia
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76
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Breathwaite EK, Weaver JR, Murchison AC, Treadwell ML, Odanga JJ, Lee JB. Scaffold-free bioprinted osteogenic and chondrogenic systems to model osteochondral physiology. ACTA ACUST UNITED AC 2019; 14:065010. [PMID: 31491773 DOI: 10.1088/1748-605x/ab4243] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Three-dimensional bioprinted culture platforms mimic the native microenvironment of tissues more accurately than two-dimensional cell cultures or animal models. Scaffold-free bioprinting eliminates many complications associated with traditional scaffold-dependent printing as well as provides better cell-to-cell interactions and long-term functionality. In this study, constructs were produced from bone marrow derived mesenchymal stem cells (BM-MSCs) using a scaffold-free bioprinter. These constructs were cultured in either osteogenic, chondrogenic, a 50:50 mixture of osteogenic and chondrogenic ('osteo-chondro'), or BM-MSC growth medium. Osteogenic and chondrogenic differentiation capacity was determined over an 8-week culture period using histological and immunohistochemical staining and RT-qPCR (Phase I). After 6 weeks in culture, individual osteogenic and chondrogenic differentiated constructs were adhered to create a bone-cartilage interaction model. Adhered differentiated constructs were cultured for an additional 8 weeks in either chondrogenic or osteo-chondro medium to evaluate sustainability of lineage specification and transdifferentiation potential (Phase II). Constructs cultured in their respective osteogenic and/or chondrogenic medium differentiated directly into bone (model of intramembranous ossification) or cartilage. Positive histological and immunohistochemical staining for bone or cartilage identification was shown after 4 and 8 weeks in culture. Expression of osteogenesis and chondrogenesis associated genes increased between weeks 2 and 6. Adhered individual osteogenic and chondrogenic differentiated constructs sustained their differentiated phenotype when cultured in chondrogenic medium. However, adhered individual chondrogenic differentiated constructs cultured in osteo-chondro medium were converted to bone (model of metaplastic transformation). These bioprinted models of bone-cartilage interaction, intramembranous ossification, and metaplastic transformation of cartilage into bone offer a useful and promising approach for bone and cartilage tissue engineering research. Specifically, these models can be potentially used as functional tissue systems for studying osteochondral defect repair, drug discovery and response, and many other potential applications.
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Affiliation(s)
- Erick K Breathwaite
- Institute of Regenerative Medicine, LifeNet Health, 1864 Concert Drive, Virginia Beach, VA, 23453, United States of America
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77
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Sivan U, De Angelis J, Kusumbe AP. Role of angiocrine signals in bone development, homeostasis and disease. Open Biol 2019; 9:190144. [PMID: 31575330 PMCID: PMC6833221 DOI: 10.1098/rsob.190144] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Skeletal vasculature plays a central role in the maintenance of microenvironments for osteogenesis and haematopoiesis. In addition to supplying oxygen and nutrients, vasculature provides a number of inductive factors termed as angiocrine signals. Blood vessels drive recruitment of osteoblast precursors and bone formation during development. Angiogenesis is indispensable for bone repair and regeneration. Dysregulation of the angiocrine crosstalk is a hallmark of ageing and pathobiological conditions in the skeletal system. The skeletal vascular bed is complex, heterogeneous and characterized by distinct capillary subtypes (type H and type L), which exhibit differential expression of angiocrine factors. Furthermore, distinct blood vessel subtypes with differential angiocrine profiles differentially regulate osteogenesis and haematopoiesis, and drive disease states in the skeletal system. This review provides an overview of the role of angiocrine signals in bone during homeostasis and disease.
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Affiliation(s)
- Unnikrishnan Sivan
- The Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7FY, UK
| | - Jessica De Angelis
- The Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7FY, UK
| | - Anjali P Kusumbe
- The Kennedy Institute of Rheumatology, University of Oxford, Oxford OX3 7FY, UK
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78
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Gruber HE, Ashraf N, Cox MD, Ingram JA, Templin M, Wattenbarger JM. Experimental Induction of Physeal Injuries by Fracture, Drill, and Ablation Techniques: Analyses of Immunohistochemical Findings. J Pediatr Orthop 2019; 39:479-486. [PMID: 31503237 DOI: 10.1097/bpo.0000000000001093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Although physeal fractures and physeal bars can result in significant clinical consequences to growth and development of the injured physis, little orthopaedic research has focused upon this topic. Our objective was to extend a previously developed rat model to examine the immunohistochemical features following surgical application of techniques disrupting the physis. METHODS Physes were surgically disrupted using fracture (control), epiphyseal scrape (ES), or epiphyseal drill (ED). After 1, 3, 6, 10, or 21 days, animals were euthanized, sites processed for histology and immunohistochemical localization of vascular endothelial growth factor (VEGF), Factor VIII, Sox-9, PTHrP (parathyroid hormone-related protein) and PTHrP-R (parathyroid hormone-related protein receptor) in resting, proliferative, and hypertrophic physeal zones. Incidence of physeal bars, vertical septa and islands within the metaphysis was quantified. Semiquantitative analysis of immunohistochemistry was performed. RESULTS Physeal bars, vertical septa, and displaced cartilage islands were present each of the surgical treatments. Fisher's exact test showed a statistically significant increase in the presence of physeal bars (P=0.002) and vertical septa (P=0.012) in the ED group at 10 and 21 days. Analysis of VEGF showed significant differences among the surgical treatments involving the resting zone, and the proliferative zone for days 1, 6, and 21 (P≤0.02) with greater mean scores present in the fracture (control) group, followed by the ED group; the lowest scores were present in the ES group. PTHrP-R immunolocalization showed significant differences among treatments in the hypertrophic zone at days 6 and 21 (P=0.022 and 0.044, respectively). CONCLUSIONS On the basis of the type of surgical treatment, results show significant differences in the presence of VEGF (reflecting the vascular bed) in the resting and proliferating zones at days 1, 6, and 21. VEGF localization was less abundant in the ED group (which had more physeal bars), suggesting that lack of vascular ingrowth plays a role in physeal bar formation. CLINICAL RELEVANCE Basic science data presented here provide insight into the importance of the various regions of the physis and its repair and continued growth after physeal fracture. We suggest that a better understanding of the cellular basis of physeal arrest following physeal fracture may have future relevance for the development of treatments to prevent or correct arrest.
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Affiliation(s)
| | | | | | | | - Megan Templin
- Dickson Advanced Analytics, Carolinas Medical Center, Charlotte, NC
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79
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George EL, Truesdell SL, Magyar AL, Saunders MM. The effects of mechanically loaded osteocytes and inflammation on bone remodeling in a bisphosphonate-induced environment. Bone 2019; 127:460-473. [PMID: 31301402 DOI: 10.1016/j.bone.2019.07.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 07/03/2019] [Accepted: 07/08/2019] [Indexed: 12/23/2022]
Abstract
Bisphosphonate-related osteonecrosis of the jaw is a disease appearing after tooth removal in patients undergoing bisphosphonate treatment for metastasizing cancers and osteoporosis. The complexity of the condition requires a multicellular model to address the net effects of two key risk factors: mechanical trauma (pathologic overload) and inflammation. In this work, a system comprised of a polydimethylsiloxane chip and mechanical loading device is used to expose bisphosphonate-treated osteocytes to mechanical trauma. Specifically, osteocytes are treated with the potent nitrogen-containing bisphosphonate, zoledronic acid, and exposed to short-term pathologic overload via substrate stretch. During bone remodeling, osteocyte apoptosis plays a role in attracting pre-osteoclasts to sites of damage; as such, lactate dehydrogenase activity, cell death and protein expression are evaluated as functions of load. Additionally, the effects of osteocyte soluble factors on osteoclast and osteoblast functional activity are quantified. Osteoclast activity and bone resorption are quantified in the presence and absence of inflammatory components, lipopolysaccharide and interferon gamma. Results suggest that inflammation associated with bacterial infection may hinder bone resorption by osteoclasts. In addition, osteocytes may respond to overload by altering expression of soluble signals that act on osteoblasts to attenuate bone formation. These findings give insight into the multicellular interactions implicated in bisphosphonate-related osteonecrosis of the jaw.
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Affiliation(s)
- Estee L George
- The University of Akron, Olson Research Center 319, 302 E. Buchtel Ave., Akron, OH 44325-0302, USA.
| | - Sharon L Truesdell
- The University of Akron, Olson Research Center 319, 302 E. Buchtel Ave., Akron, OH 44325-0302, USA.
| | - Alexandria L Magyar
- The University of Akron, Olson Research Center 319, 302 E. Buchtel Ave., Akron, OH 44325-0302, USA.
| | - Marnie M Saunders
- The University of Akron, Olson Research Center 319, 302 E. Buchtel Ave., Akron, OH 44325-0302, USA.
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80
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Buettmann EG, McKenzie JA, Migotsky N, Sykes DA, Hu P, Yoneda S, Silva MJ. VEGFA From Early Osteoblast Lineage Cells (Osterix+) Is Required in Mice for Fracture Healing. J Bone Miner Res 2019; 34:1690-1706. [PMID: 31081125 PMCID: PMC6744295 DOI: 10.1002/jbmr.3755] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 04/23/2019] [Accepted: 05/01/2019] [Indexed: 12/21/2022]
Abstract
Bone formation via intramembranous and endochondral ossification is necessary for successful healing after a wide range of bone injuries. The pleiotropic cytokine, vascular endothelial growth factor A (VEGFA) has been shown, via nonspecific pharmacologic inhibition, to be indispensable for angiogenesis and ossification following bone fracture and cortical defect repair. However, the importance of VEGFA expression by different cell types during bone healing is not well understood. We sought to determine the role of VEGFA from different osteoblast cell subsets following clinically relevant models of bone fracture and cortical defect. Ubiquitin C (UBC), Osterix (Osx), or Dentin matrix protein 1 (Dmp1) Cre-ERT2 mice (male and female) containing floxed VEGFA alleles (VEGFAfl/fl ) were either given a femur full fracture, ulna stress fracture, or tibia cortical defect at 12 weeks of age. All mice received tamoxifen continuously starting 2 weeks before bone injury and throughout healing. UBC Cre-ERT2 VEGFAfl/fl (UBC cKO) mice, which were used to mimic nonspecific inhibition, had minimal bone formation and impaired angiogenesis across all bone injury models. UBC cKO mice also exhibited impaired periosteal cell proliferation during full fracture, but not stress fracture repair. Osx Cre-ERT2 VEGFAfl/fl (Osx cKO) mice, but not Dmp1 Cre-ERT2 VEGFAfl/fl (Dmp1 cKO) mice, showed impaired periosteal bone formation and angiogenesis in models of full fracture and stress fracture. Neither Osx cKO nor Dmp1 cKO mice demonstrated significant impairments in intramedullary bone formation and angiogenesis following cortical defect. These data suggest that VEGFA from early osteolineage cells (Osx+), but not mature osteoblasts/osteocytes (Dmp1+), is critical at the time of bone injury for rapid periosteal angiogenesis and woven bone formation during fracture repair. Whereas VEGFA from another cell source, not from the osteoblast cell lineage, is necessary at the time of injury for maximum cortical defect intramedullary angiogenesis and osteogenesis. © 2019 American Society for Bone and Mineral Research.
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Affiliation(s)
- Evan G Buettmann
- Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO, USA.,Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO, USA
| | - Jennifer A McKenzie
- Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO, USA
| | - Nicole Migotsky
- Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO, USA.,Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO, USA
| | - David Aw Sykes
- Department of Biology, Washington University in St. Louis, St. Louis, MO, USA
| | - Pei Hu
- Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO, USA
| | - Susumu Yoneda
- Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO, USA
| | - Matthew J Silva
- Department of Orthopaedic Surgery, Washington University in St. Louis, St. Louis, MO, USA.,Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO, USA
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81
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Metal Nanoparticles Released from Dental Implant Surfaces: Potential Contribution to Chronic Inflammation and Peri-Implant Bone Loss. MATERIALS 2019; 12:ma12122036. [PMID: 31242601 PMCID: PMC6630980 DOI: 10.3390/ma12122036] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 06/18/2019] [Accepted: 06/20/2019] [Indexed: 02/06/2023]
Abstract
Peri-implantitis is an inflammatory disease affecting tissues surrounding dental implants. Although it represents a common complication of dental implant treatments, the underlying mechanisms have not yet been fully described. The aim of this study is to identify the role of titanium nanoparticles released form the implants on the chronic inflammation and bone lysis in the surrounding tissue. We analyzed the in vitro effect of titanium (Ti) particle exposure on mesenchymal stem cells (MSCs) and fibroblasts (FU), evaluating cell proliferation by MTT test and the generation of reactive oxygen species (ROS). Subsequently, in vivo analysis of peri-implant Ti particle distribution, histological, and molecular analyses were performed. Ti particles led to a time-dependent decrease in cell viability and increase in ROS production in both MSCs and FU. Tissue analyses revealed presence of oxidative stress, high extracellular and intracellular Ti levels and imbalanced bone turnover. High expression of ZFP467 and the presence of adipose-like tissue suggested dysregulation of the MSC population; alterations in vessel morphology were identified. The results suggest that Ti particles may induce the production of high ROS levels, recruiting abnormal quantity of neutrophils able to produce high level of metalloproteinase. This induces the degradation of collagen fibers. These events may influence MSC commitment, with an imbalance of bone regeneration.
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82
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Zheng D, Li M, Zhou J, Wang J, Bian W, Yoshimura K, Yu L. Effect of Salvia Miltiorrhiza Injection in Patients With Autologous Fat Grafting to the Breast: A Preliminary Comparative Study. Aesthet Surg J 2019; 39:NP243-NP252. [PMID: 30541057 DOI: 10.1093/asj/sjy318] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Salvia miltiorrhiza (SM) is an herb used in Chinese medicine formulations for promoting blood circulation and minimizing vascular stasis. It has been successfully utilized in treating cardiovascular diseases, such as atherosclerosis, thromboembolism, and angina. OBJECTIVES The authors sought to study the effect of SM injections in autologous fat grafting to the breast. METHODS Fifteen women who elected to undergo breast augmentation with autologous fat grafting were included in this study. Of these, 10 were given intravenous infusions of SM for 4 weeks perioperatively, and the remaining 5 did not receive herbal infusion. The increase in breast volume after fat grafting was measured in both the groups using a three-dimensional scanner. Breast tissue specimens were harvested just before the second fat injection procedure and were analyzed by the immunofluorescence staining test. RESULTS All of the patients showed improvement in breast volume after fat grafting. The fat graft retention rate in the SM group was 60.06 ± 16.12%, whereas that in the non-SM group was 34.04 ± 11.15%. In addition, the SMG showed good breast morphology and absence of cyst formation. CONCLUSIONS SM has the potential to increase the retention rate of fat grafts in breast augmentation. LEVEL OF EVIDENCE: 3
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Affiliation(s)
- Danning Zheng
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Maoqun Li
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Jia Zhou
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Jian Wang
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Weiwei Bian
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Kotaro Yoshimura
- Department of Plastic Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Li Yu
- Department of Plastic and Reconstructive Surgery, Shanghai 9th People’s Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
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83
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Everding J, Stolberg-Stolberg J, Raschke MJ, Stange R. [Stimulation of fracture healing by growth factors and cell-based technologies]. Unfallchirurg 2019; 122:534-543. [PMID: 31201492 DOI: 10.1007/s00113-019-0686-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Bone has the special capability to completely regenerate after trauma and to re-establish its original geometry and biomechanical stability corresponding to the pretrauma conditions. Nevertheless, in daily clinical practice impaired fracture healing and nonunions are regular complications as a result of inadequate mechanical stability and/or insufficient biological processes around the fracture region. Since the beginning of the millennium, intensive research on the physiological processes in bone healing as well as the production and clinical administration of growth factors have enabled the possibility to improve the local biological processes during fracture healing by osteoinduction. Although the initial clinical results, particularly of bone morphogenetic proteins, in fracture healing were promising, growth factors did not become established for unrestricted use in the clinical application. Currently, additional growth factors are being investigated with respect to the potential supportive and osteoinductive characteristics for enhancement of fracture healing and possible clinical applications. Furthermore, the development of cell-based technologies is another promising approach to positively stimulate fracture healing. In addition to the gold standard of autologous bone grafting, harvesting of mesenchymal stroma cells by aspiration has gained in importance in recent years. Allogeneic bone cell transplantation procedures and in particular gene therapy are promising new strategies for the treatment of disorders of fracture healing. This review gives an overview of present and future possibilities for modulation of fracture healing by growth factors and cell-based technologies.
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Affiliation(s)
- J Everding
- Klinik für Unfall‑, Hand- und Wiederherstellungschirurgie, Universitätsklinikum Münster, Münster, Deutschland
| | - J Stolberg-Stolberg
- Klinik für Unfall‑, Hand- und Wiederherstellungschirurgie, Universitätsklinikum Münster, Münster, Deutschland
| | - M J Raschke
- Klinik für Unfall‑, Hand- und Wiederherstellungschirurgie, Universitätsklinikum Münster, Münster, Deutschland
| | - R Stange
- Abteilung für Regenerative Muskuloskelettale Medizin, Universitätsklinikum Münster, Münster, Deutschland.
- Institut für Muskuloskelettale Medizin (IMM), Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Deutschland.
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84
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Goonoo N, Bhaw-Luximon A. Mimicking growth factors: role of small molecule scaffold additives in promoting tissue regeneration and repair. RSC Adv 2019; 9:18124-18146. [PMID: 35702423 PMCID: PMC9115879 DOI: 10.1039/c9ra02765c] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 06/02/2019] [Indexed: 12/31/2022] Open
Abstract
The primary aim of tissue engineering scaffolds is to mimic the in vivo environment and promote tissue growth. In this quest, a number of strategies have been developed such as enhancing cell-material interactions through modulation of scaffold physico-chemical parameters. However, more is required for scaffolds to relate to the cell natural environment. Growth factors (GFs) secreted by cells and extracellular matrix (ECM) are involved in both normal repair and abnormal remodeling. The direct use of GFs on their own or when incorporated within scaffolds represent a number of challenges such as release rate, stability and shelf-life. Small molecules have been proposed as promising alternatives to GFs as they are able to minimize or overcome many shortcomings of GFs, in particular immune response and instability. Despite the promise of small molecules in various TE applications, their direct use is limited by nonspecific adverse effects on non-target tissues and organs. Hence, they have been incorporated within scaffolds to localize their actions and control their release to target sites. However, scanty rationale is available which links the chemical structure of these molecules with their mode of action. We herewith review various small molecules either when used on their own or when incorporated within polymeric carriers/scaffolds for bone, cartilage, neural, adipose and skin tissue regeneration.
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Affiliation(s)
- Nowsheen Goonoo
- Biomaterials, Drug Delivery and Nanotechnology (BDDN) Unit, Centre for Biomedical and Biomaterials Research, University of Mauritius Réduit Mauritius
| | - Archana Bhaw-Luximon
- Biomaterials, Drug Delivery and Nanotechnology (BDDN) Unit, Centre for Biomedical and Biomaterials Research, University of Mauritius Réduit Mauritius
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NIMIGEAN VICTOR, POLL ALEXANDRU, MINCULESCU COZETAANCA, NIMIGEAN VANDAROXANA, MORARU SIMONAANDREEA, VÎRLAN MARIAJUSTINAROXANA, BĂLĂCEANU ROSALIEADINA, PĂUN DIANALORETA. Immunohistochemical evaluation of autogenous mandibular bone grafts integration: An experimental study. ROMANIAN BIOTECHNOLOGICAL LETTERS 2019. [DOI: 10.25083/rbl/24.2/229.235] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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86
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Barbeck M, Perić-Kačarević Ž, Kavehei F, Rider P, Najman S, Stojanović S, Rimashevskiy D, Wenisch S, Schnettler R. THE EFFECT OF TEMPERATURE TREATMENT OF XENOGENEIC BONE SUBSTITUTE ON THE TISSUE RESPONSE –A MINI REVIEW. ACTA MEDICA MEDIANAE 2019. [DOI: 10.5633/amm.2019.0118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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87
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Zhang C, Feinberg D, Alharbi M, Ding Z, Lu C, O’Connor JP, Graves DT. Chondrocytes Promote Vascularization in Fracture Healing Through a FOXO1-Dependent Mechanism. J Bone Miner Res 2019; 34:547-556. [PMID: 30347467 PMCID: PMC6414243 DOI: 10.1002/jbmr.3610] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 10/08/2018] [Accepted: 10/11/2018] [Indexed: 12/17/2022]
Abstract
Chondrocytes play an essential role in fracture healing by producing cartilage, which forms an anlage for endochondral ossification that stabilizes the healing fracture callus. More recently it has been appreciated that chondrocytes have the capacity to produce factors that may affect the healing process. We examined the role of chondrocytes in angiogenesis during fracture healing and the role of the transcription factor forkhead box-O 1 (FOXO1), which upregulates wound healing in soft tissue. Closed fractures were induced in experimental mice with lineage-specific FOXO1 deletion by Cre recombinase under the control of a collagen-2α1 promoter element (Col2α1Cre+ FOXO1L/L ) and Cre recombinase negative control littermates containing flanking loxP sites (Col2α1Cre- FOXO1L/L ). Experimental mice had significantly reduced CD31+ new vessel formation. Deletion of FOXO1 in chondrocytes in vivo suppressed the expression of vascular endothelial growth factor-A (VEGFA) at both the protein and mRNA levels. Overexpression of FOXO1 in chondrocytes in vitro increased VEGFA mRNA levels and VEGFA transcriptional activity whereas silencing FOXO1 reduced it. Moreover, FOXO1 interacted directly with the VEGFA promoter and a deacetylated FOXO1 mutant enhanced VEGFA expression whereas an acetylated FOXO1 mutant did not. Lastly, FOXO1 knockdown by siRNA significantly reduced the capacity of chondrocytes to stimulate microvascular endothelial cell tube formation in vitro. The results indicate that chondrocytes play a key role in angiogenesis which is FOXO1 dependent and that FOXO1 in chondrocytes regulates a potent angiogenic factor, VEGFA. These studies provide new insight into fracture healing given the important role of vessel formation in the fracture repair process. © 2018 American Society for Bone and Mineral Research.
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Affiliation(s)
- Citong Zhang
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Department of Implantology, School of Stomatology, Jilin University, Changchun, China
| | - Daniel Feinberg
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Mohammed Alharbi
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, KSA
| | - Zhenjiang Ding
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Department of Pediatric Dentistry, School of Stomatology, China Medical University, Shenyang, China
- Key Laboratory of Oral Disease and Liaoning Province, Shenyang, China
| | - Chanyi Lu
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - J Patrick O’Connor
- Department of Orthopaedics, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ, USA
| | - Dana T Graves
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
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Zhang S, Chen J, Yu Y, Dai K, Wang J, Liu C. Accelerated Bone Regenerative Efficiency by Regulating Sequential Release of BMP-2 and VEGF and Synergism with Sulfated Chitosan. ACS Biomater Sci Eng 2019; 5:1944-1955. [DOI: 10.1021/acsbiomaterials.8b01490] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Zaniboni E, Bagne L, Camargo T, do Amaral MEC, Felonato M, de Andrade TAM, Dos Santos GMT, Caetano GF, Esquisatto MAM, Santamaria M, Mendonça FAS. Do electrical current and laser therapies improve bone remodeling during an orthodontic treatment with corticotomy? Clin Oral Investig 2019; 23:4083-4097. [PMID: 30771000 DOI: 10.1007/s00784-019-02845-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 02/07/2019] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Evaluate the bone remodeling during orthodontic movement with corticotomy when submitted to low-intensity electrical stimulation application (microcurrent-MC) and low-level laser therapy (LLLT). MATERIAL AND METHODS One hundred and fifty Wistar rats were divided into the following 5 groups: (C) submitted to tooth movement; (Cort) tooth movement/corticotomy; (Cort-L) tooth movement/corticotomy/laser AsGaAl 808 nm (4.96J/50s); (Cort-Mc) tooth movement/corticotomy/microcurrent (10 μA/5 min); (Cort-L-Mc) tooth movement/corticotomy and laser/microcurrent alternated. Inflammation, angiogenesis, and osteogenesis were evaluated in the periodontal ligament (PDL) and alveolar bone on the 7th, 14th, and 21st days of orthodontic movement. RESULTS The quantification of inflammatory infiltrate, angiogenesis and expression of TGF-β1, VEGF, and collagen type I were favorably modulated by the application of therapies such as low-level laser therapy (LLLT), MC, or both combined. However, electrical stimulation increased fibroblasts, osteoclasts and RANK numbers, birefringent collagen fiber organization, and BMP-7 and IL-6 expression. CONCLUSIONS Low-level laser therapy (LLLT) and MC application both improved the process of bone remodeling during orthodontic treatment with corticotomy. Still, electrical current therapy promoted a more effective tooth displacement but presented expected root resorption similar to all experimental treatments. CLINICAL RELEVANCE It is important to know the effects of minimally invasive therapies on cellular and molecular elements involved in the bone remodeling of orthodontic treatment associated with corticotomy surgery, in order to reduce the adverse effects in the use of this technique and to establish a safer clinical routine.
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Affiliation(s)
- Ewerton Zaniboni
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Leonardo Bagne
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Thaís Camargo
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Maria Esméria Corezola do Amaral
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Maira Felonato
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Thiago Antônio Moretti de Andrade
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Gláucia Maria Tech Dos Santos
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Guilherme Ferreira Caetano
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Marcelo Augusto Marreto Esquisatto
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
| | - Milton Santamaria
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil. .,Graduate Program of Orthodontics, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil.
| | - Fernanda Aparecida Sampaio Mendonça
- Graduate Program of Biomedical Sciences, Herminio Ometto University Center, UNIARARAS, Dr. Maximiliano Baruto, 500, Araras, SP, 13607-339, Brazil
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90
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Wasilewski GB, Vervloet MG, Schurgers LJ. The Bone-Vasculature Axis: Calcium Supplementation and the Role of Vitamin K. Front Cardiovasc Med 2019; 6:6. [PMID: 30805347 PMCID: PMC6370658 DOI: 10.3389/fcvm.2019.00006] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 01/14/2019] [Indexed: 12/11/2022] Open
Abstract
Calcium supplements are broadly prescribed to treat osteoporosis either as monotherapy or together with vitamin D to enhance calcium absorption. It is still unclear whether calcium supplementation significantly contributes to the reduction of bone fragility and fracture risk. Data suggest that supplementing post-menopausal women with high doses of calcium has a detrimental impact on cardiovascular morbidity and mortality. Chronic kidney disease (CKD) patients are prone to vascular calcification in part due to impaired phosphate excretion. Calcium-based phosphate binders further increase risk of vascular calcification progression. In both bone and vascular tissue, vitamin K-dependent processes play an important role in calcium homeostasis and it is tempting to speculate that vitamin K supplementation might protect from the potentially untoward effects of calcium supplementation. This review provides an update on current literature on calcium supplementation among post-menopausal women and CKD patients and discusses underlying molecular mechanisms of vascular calcification. We propose therapeutic strategies with vitamin K2 treatment to prevent or hold progression of vascular calcification as a consequence of excessive calcium intake.
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Affiliation(s)
- Grzegorz B Wasilewski
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, Netherlands.,Nattopharma ASA, Hovik, Norway
| | - Marc G Vervloet
- Department of Nephrology and Amsterdam Cardiovascular Sciences, Amsterdam University Medical Centers, Amsterdam, Netherlands
| | - Leon J Schurgers
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, Netherlands
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91
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Yuan Z, Wei P, Huang Y, Zhang W, Chen F, Zhang X, Mao J, Chen D, Cai Q, Yang X. Injectable PLGA microspheres with tunable magnesium ion release for promoting bone regeneration. Acta Biomater 2019; 85:294-309. [PMID: 30553873 DOI: 10.1016/j.actbio.2018.12.017] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 12/07/2018] [Accepted: 12/12/2018] [Indexed: 12/13/2022]
Abstract
Magnesium ions (Mg2+) are bioactive and proven to promote bone tissue regeneration, in which the enhancement efficiency is closely related to Mg2+ concentrations. Currently, there are no well-established bone tissue engineering scaffolds that can precisely control Mg2+ release, although this capability could have a marked impact in bone regeneration. Leveraging the power of biodegradable microspheres to control the release of bioactive factors, we developed lactone-based biodegradable microspheres that served as both injectable scaffolds and Mg2+ release system for bone regeneration. The biodegradable microsphere (PMg) was prepared from poly(lactide-co-glycolide) (PLGA) microspheres co-embedded with MgO and MgCO3 at a fixed total loading amount (20 wt%) with different weight ratios (1:0; 3:1; 1:1; 1:3; 0:1). The PMg microspheres demonstrated controlled release of Mg2+ by tuning the MgO/MgCO3 ratios. Specifically, faster release with higher initial concentrations of Mg2+ were detected at higher MgO fractions, while long-term sustained release with lower concentrations of Mg2+ was obtained at higher MgCO3 fractions. All prepared PMg microspheres were non-cytotoxic. Furthermore, they promoted attachment, proliferation, osteogenic differentiation, especially, cell migration of bone marrow mesenchymal stromal cells (BMSCs). Among these microspheres, PMg-III microspheres (MgO/MgCO3 in 1:1) exhibited the strongest promotion of mineral depositions and osteogenic differentiation of BMSCs. PMg-III microspheres were injected into the critical-sized calvarial defect of a rat model, resulting in significant bone regeneration when compared to the control group filled with PLGA microspheres. In the PMg-III group, the new bone volume fraction (BV/TV) and bone mineral density (BMD) reached 32.9 ± 5.6% and 325.7 ± 20.2 mg/cm3, respectively, which were much higher than the values 8.1 ± 2.5% (BV/TV) and 124 ± 35.8 mg/cm3 (BMD) in the PLGA group. These findings indicated that bioresorbable microspheres possessing controlled Mg2+ release features were efficient in treating bone defects and promising for future in vivo applications. STATEMENT OF SIGNIFICANCE: Magnesium plays pivotal roles in regulating osteogenesis, which exhibits concentration-dependent behaviors. However, no generally accepted controlled-release system is reported to correlate Mg2+ concentration with efficient bone regeneration. Biodegradable microspheres with injectability are excellent cell carriers for tissue engineering, moreover, good delivery systems for bioactive factors. By co-embedding magnesium compounds (MgO, MgCO3) with different dissolution rates in various ratios, tunable release of Mg2+ from the microspheres was readily achieved. Accordingly, significant promotion in bone defect regeneration is achieved with microspheres displaying proper sustained release of Mg2+. The developed strategy may serve as valuable guidelines for bone tissue engineering scaffold design, which allows precise control on the release of bioactive metal ions like Mg2+ toward potential clinical translation.
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Affiliation(s)
- Zuoying Yuan
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Pengfei Wei
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Yiqian Huang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Wenxin Zhang
- Department of Endodontics, School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, PR China
| | - Fuyu Chen
- Department of Endodontics, School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, PR China
| | - Xu Zhang
- Department of Endodontics, School and Hospital of Stomatology, Tianjin Medical University, Tianjin 300070, PR China
| | - Jianping Mao
- Department of Spine Surgery, Beijing Jishuitan Hospital, Beijing 100035, PR China
| | - Dafu Chen
- Laboratory of Bone Tissue Engineering, Beijing Research Institute of Traumatology and Orthopaedics, Beijing Jishuitan Hospital, Beijing 100035, PR China
| | - Qing Cai
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Xiaoping Yang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China.
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92
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Martínez-Guardado I, Ramos-Campo DJ, Olcina GJ, Rubio-Arias JA, Chung LH, Marín-Cascales E, Alcaraz PE, Timón R. Effects of high-intensity resistance circuit-based training in hypoxia on body composition and strength performance. Eur J Sport Sci 2019; 19:941-951. [PMID: 30638154 DOI: 10.1080/17461391.2018.1564796] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Hypoxic training methods are increasingly being used by researchers in an attempt to improve performance in normoxic ambients. Moreover, previous research suggests that resistance training in hypoxia can cause physiological and muscle adaptations. The primary aim of this study was to compare the effects of 8 weeks of high-intensity resistance circuit-based (HRC) training in hypoxia on body composition and strength performance. The secondary aim was to examine the effects of HRC on metabolic parameters. Twenty-eight male participants were randomly assigned to either hypoxia (Fraction of inspired oxygen [FIO2] = 15%; HRChyp: n = 15; age: 24.6 ± 6.8 years; height: 177.4 ± 5.9 cm; weight: 74.9 ± 11.5 kg) or normoxia [FIO2] = 20.9%; HRCnorm: n = 13; age: 23.2 ± 5.2 years; height: 173.4 ± 6.2 cm; weight: 69.4 ± 7.4 kg) groups. Training sessions consisted of two blocks of three exercises (Block 1: bench press, leg extension and front pull down; Block 2: deadlift, elbow flexion and ankle extension). Each exercise was performed at six repetition maximum. Rest periods lasted for 35-s between exercises, 3-min between sets and 5-min between blocks. Participants exercised twice weekly for 8 weeks, and body composition, strength and blood tests were performed before and after the training program. Lean body mass and bone mineral density significantly increased over time in the HRChyp (p < .005; ES = 0.14 and p < .014; ES = 0.19, respectively) but not in the HRCnorm after training. Both groups improved their strength performance over time (p < .001), but without group effect differences. These results indicate that simulated hypoxia during HRC exercise produced trivial effects on lean body mass and bone mineral density compared to normoxia.
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Affiliation(s)
| | - Domingo J Ramos-Campo
- b Department of Physical Activity and Sport Science, Sport Science Faculty , Catholic University of Murcia , Murcia , Spain.,c UCAM Research Center for High Performance Sport , Murcia , Spain
| | | | - Jacobo A Rubio-Arias
- b Department of Physical Activity and Sport Science, Sport Science Faculty , Catholic University of Murcia , Murcia , Spain.,c UCAM Research Center for High Performance Sport , Murcia , Spain
| | - Linda H Chung
- b Department of Physical Activity and Sport Science, Sport Science Faculty , Catholic University of Murcia , Murcia , Spain.,c UCAM Research Center for High Performance Sport , Murcia , Spain
| | | | - Pedro E Alcaraz
- b Department of Physical Activity and Sport Science, Sport Science Faculty , Catholic University of Murcia , Murcia , Spain.,c UCAM Research Center for High Performance Sport , Murcia , Spain
| | - Rafael Timón
- a Sport Science Faculty , University of Extremadura , Cáceres , Spain
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93
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Izquierdo-Barba I, Santos-Ruiz L, Becerra J, Feito M, Fernández-Villa D, Serrano M, Díaz-Güemes I, Fernández-Tomé B, Enciso S, Sánchez-Margallo F, Monopoli D, Afonso H, Portolés M, Arcos D, Vallet-Regí M. Synergistic effect of Si-hydroxyapatite coating and VEGF adsorption on Ti6Al4V-ELI scaffolds for bone regeneration in an osteoporotic bone environment. Acta Biomater 2019; 83:456-466. [PMID: 30445158 DOI: 10.1016/j.actbio.2018.11.017] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 11/07/2018] [Accepted: 11/12/2018] [Indexed: 01/14/2023]
Abstract
The osteogenic and angiogenic responses to metal macroporous scaffolds coated with silicon substituted hydroxyapatite (SiHA) and decorated with vascular endothelial growth factor (VEGF) have been evaluated in vitro and in vivo. Ti6Al4V-ELI scaffolds were prepared by electron beam melting and subsequently coated with Ca10(PO4)5.6(SiO4)0.4(OH)1.6 following a dip coating method. In vitro studies demonstrated that SiHA stimulates the proliferation of MC3T3-E1 pre-osteoblastic cells, whereas the adsorption of VEGF stimulates the proliferation of EC2 mature endothelial cells. In vivo studies were carried out in an osteoporotic sheep model, evidencing that only the simultaneous presence of both components led to a significant increase of new tissue formation in osteoporotic bone. STATEMENT OF SIGNIFICANCE: Reconstruction of bones after severe trauma or tumors extirpation is one of the most challenging tasks in the field of orthopedic surgery. This scenario is even more complicated in the case of osteoporotic patients, since their bone regeneration capability is decreased. In this work we present a porous implant that promotes bone regeneration even in osteoporotic bone. By coating the implant with osteogenic bioceramics such as silicon substituted hydroxyapatite and subsequent adsorption of vascular endothelial growth factor, these implants stimulate the bone ingrowth when they are implanted in osteoporotic sheep.
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94
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Limjeerajarus CN, Sonntana S, Pajaree L, Kansurang C, Pitt S, Saowapa T, Prasit P. Prolonged release of iloprost enhances pulpal blood flow and dentin bridge formation in a rat model of mechanical tooth pulp exposure. J Oral Sci 2019; 61:73-81. [DOI: 10.2334/josnusd.17-0368] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Chalida N. Limjeerajarus
- Department of Physiology, Faculty of Dentistry, Chulalongkorn University
- Excellence Center in Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University
| | - Seang Sonntana
- Graduate School, Oral Biology Program, Faculty of Dentistry, Chulalongkorn University
| | | | | | - Supaphol Pitt
- The Petroleum and Petrochemical College, Chulalongkorn University
| | - Thumsing Saowapa
- The Petroleum and Petrochemical College, Chulalongkorn University
- Department of Industrial Chemistry, Faculty of Applied Science, King Mongkut University of Technology North
| | - Pavasant Prasit
- Excellence Center in Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University
- Department of Anatomy, Faculty of Dentistry, Chulalongkorn University
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95
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Subbiah R, Guldberg RE. Materials Science and Design Principles of Growth Factor Delivery Systems in Tissue Engineering and Regenerative Medicine. Adv Healthc Mater 2019; 8:e1801000. [PMID: 30398700 DOI: 10.1002/adhm.201801000] [Citation(s) in RCA: 109] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 09/13/2018] [Indexed: 01/22/2023]
Abstract
Growth factors (GFs) are signaling molecules that direct cell development by providing biochemical cues for stem cell proliferation, migration, and differentiation. GFs play a key role in tissue regeneration, but one major limitation of GF-based therapies is dosage-related adverse effects. Additionally, the clinical applications and efficacy of GFs are significantly affected by the efficiency of delivery systems and other pharmacokinetic factors. Hence, it is crucial to design delivery systems that provide optimal activity, stability, and tunable delivery for GFs. Understanding the physicochemical properties of the GFs and the biomaterials utilized for the development of biomimetic GF delivery systems is critical for GF-based regeneration. Many different delivery systems have been developed to achieve tunable delivery kinetics for single or multiple GFs. The identification of ideal biomaterials with tunable properties for spatiotemporal delivery of GFs is still challenging. This review characterizes the types, properties, and functions of GFs, the materials science of widely used biomaterials, and various GF loading strategies to comprehensively summarize the current delivery systems for tunable spatiotemporal delivery of GFs aimed for tissue regeneration applications. This review concludes by discussing fundamental design principles for GF delivery vehicles based on the interactive physicochemical properties of the proteins and biomaterials.
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Affiliation(s)
- Ramesh Subbiah
- Parker H. Petit Institute for Bioengineering and Bioscience; George W. Woodruff School of Mechanical Engineering; Georgia Institute of Technology; Atlanta GA 30332 USA
| | - Robert E. Guldberg
- Parker H. Petit Institute for Bioengineering and Bioscience; George W. Woodruff School of Mechanical Engineering; Georgia Institute of Technology; Atlanta GA 30332 USA
- Phil and Penny Knight Campus for Accelerating Scientific Impact; 6231 University of Oregon; Eugene OR 97403 USA
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96
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Fatkhudinova NL, Vasilyev AV, Bukharova TB, Osidak EO, Starikova NV, Domogatsky SP, Goldshtein DV, Kulakov AA. [The prospects of collagen as a basis for curable and activated osteoplastic materials]. STOMATOLOGII︠A︡ 2018; 97:78-83. [PMID: 30589432 DOI: 10.17116/stomat20189706178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In the review, the structure and biological properties of collagen, variants of its production from natural sources and purification are considered. Methods for modifying the physico-mechanical properties of collagen to create a curable, highly purified collagen hydrogel are described. The advantages of a cured highly purified collagen hydrogel as a basis for osteoplastic material and a means of delivery of growth factors are indicated. The registered osteoplastic materials based on the curable highly purified collagen hydrogel are described, and their comparative analysis is carried out. On the basis of the obtained data, a conclusion was made about the prospects of using collagen as a basis for curable and activated osteoplastic materials.
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Affiliation(s)
- N L Fatkhudinova
- Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia
| | - A V Vasilyev
- Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia; Research Centre for Medical Genetics, Moscow, Russia
| | - T B Bukharova
- Research Centre for Medical Genetics, Moscow, Russia
| | | | - N V Starikova
- Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia
| | | | | | - A A Kulakov
- Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russia
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97
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Nordberg RC, Wang H, Wu Q, Loboa EG. Corin is a key regulator of endochondral ossification and bone development via modulation of vascular endothelial growth factor A expression. J Tissue Eng Regen Med 2018; 12:2277-2286. [PMID: 30352487 DOI: 10.1002/term.2760] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 08/21/2018] [Accepted: 10/18/2018] [Indexed: 01/06/2023]
Abstract
Corin has been studied extensively within the vascular system and is known to regulate blood pressure. We have shown that corin is one of the most highly upregulated genes during osteogenic differentiation of human adipose-derived stem cells (hASCs). This study tested the hypothesis that, through modulation of angiogenic signalling pathways, corin is a critical regulator of osteogenic differentiation and endochondral ossification. In vitro, corin expression in hASC was suppressed via siRNA knockdown and vascular endothelial growth factor A (VEGF-A) expression was quantified via reverse transcription polymerase chain reaction. In vivo, a murine corin knockout model (female, 10 weeks) was used to determine the effect of corin deficiency on long bone development. Wild-type and corin knockout long bones were compared via haematoxylin and eosin staining to assess tissue characteristics and cellular organization, three-point bending to assess mechanical characteristics, and immunohistochemistry to visualize VEGF-A expression patterns. Corin knockdown significantly (p < 0.05) increased VEGF-A mRNA expression during osteogenic differentiation. In vivo, corin knockout reduced tibial growth plate thickness (p < 0.01) and severely diminished the hypertrophic region. Corin knockout femurs had significantly increased stiffness (p < 0.01) and maximum loads (p < 0.01) but reduced postyield deflections (p < 0.01). In corin knockout mice, VEGF-A expression was increased near the growth plate but was reduced throughout the tibial shaft and distal head of the tibiae. This is the first study to show that corin is a key regulator of bone development by modulation of VEGF-A expression. Further elucidation of this mechanism will aid in the development of optimized bone tissue engineering and regenerative medicine therapies.
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Affiliation(s)
- Rachel C Nordberg
- Joint Department of Biomedical Engineering at University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, North Carolina
| | - Hao Wang
- Molecular Cardiology, Cleveland Clinic, Ohio
| | - Qingyu Wu
- Molecular Cardiology, Cleveland Clinic, Ohio
| | - Elizabeth G Loboa
- Joint Department of Biomedical Engineering at University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, North Carolina.,College of Engineering, University of Missouri, Columbia, Missouri
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98
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Dubnika A, Manoukian MA, Mohammadi MR, Parekh MB, Gurjarpadhye AA, Inayathullah M, Dubniks V, Lakey JR, Rajadas J. Cytokines as therapeutic agents and targets in heart disease. Cytokine Growth Factor Rev 2018; 43:54-68. [DOI: 10.1016/j.cytogfr.2018.08.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/01/2018] [Accepted: 08/13/2018] [Indexed: 02/02/2023]
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99
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Fonseca JH, Bagne L, Meneghetti DH, Dos Santos GMT, Esquisatto MAM, de Andrade TAM, do Amaral MEC, Felonato M, Caetano GF, Santamaria M, Mendonça FAS. Electrical stimulation: Complementary therapy to improve the performance of grafts in bone defects? J Biomed Mater Res B Appl Biomater 2018; 107:924-932. [PMID: 30265775 DOI: 10.1002/jbm.b.34187] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 05/14/2018] [Accepted: 06/02/2018] [Indexed: 12/25/2022]
Abstract
The limitations of bone reconstruction techniques have stimulated the tissue engineering for the repair of large bone defects using osteoconductive materials and osteoinductive agents. This study evaluated the effects of low intensity electric current on the inorganic bovine graft in calvaria defects. Bone defects were performed with piezoelectric system in the calvaria of Wistar rats divided into four groups (n = 24): (C) without grafting and without electrical stimulation; (E) with grafting; (MC) without grafting and submitted to electrical stimulation; (MC + E) with grafting and submitted to electrical stimulation. Inflammatory, angiogenic and osteogenic events during bone repair at the 10th, 30th, 60th, and 90th days were considered. Several inflammatory markers demonstrated the efficacy of grafting in reducing inflammation, particularly when subjected to electrical stimulation. Angiogenesis and collagen organization were more evident by electrical stimulation application on the grafts. Moreover, the osteogenic cell differentiation process indicated that the application of microcurrent on grafting modulated the homeostasis of bone remodeling. It is concluded that microcurrent favored the performance of grafts in calvarial rat model. Low-intensity electrical current might improve the osteoconductive property of grafting in bone defects. Therefore, electrical current becomes an option as complementary therapy in clinical trials involving bone surgeries and injuries. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 924-932, 2019.
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Affiliation(s)
- José Hyczy Fonseca
- Graduate Program of Biomedical Sciences, Hermínio Ometto University Center, Araras, São Paulo, 13607-339, Brazil
| | - Leonardo Bagne
- Graduate Program of Biomedical Sciences, Hermínio Ometto University Center, Araras, São Paulo, 13607-339, Brazil
| | - Damaris Helena Meneghetti
- Graduate Program of Biomedical Sciences, Hermínio Ometto University Center, Araras, São Paulo, 13607-339, Brazil
| | | | | | | | | | - Maíra Felonato
- Graduate Program of Biomedical Sciences, Hermínio Ometto University Center, Araras, São Paulo, 13607-339, Brazil
| | - Guilherme Ferreira Caetano
- Graduate Program of Biomedical Sciences, Hermínio Ometto University Center, Araras, São Paulo, 13607-339, Brazil
| | - Milton Santamaria
- Graduate Program of Biomedical Sciences, Hermínio Ometto University Center, Araras, São Paulo, 13607-339, Brazil.,Graduate Program of Orthodontics, Hermínio Ometto University Center, Araras, São Paulo, 13607-339, Brazil
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100
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Kuttappan S, Mathew D, Jo JI, Tanaka R, Menon D, Ishimoto T, Nakano T, Nair SV, Nair MB, Tabata Y. Dual release of growth factor from nanocomposite fibrous scaffold promotes vascularisation and bone regeneration in rat critical sized calvarial defect. Acta Biomater 2018; 78:36-47. [PMID: 30067947 DOI: 10.1016/j.actbio.2018.07.050] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/02/2018] [Accepted: 07/27/2018] [Indexed: 11/27/2022]
Abstract
A promising strategy for augmenting bone formation involves the local delivery of multiple osteoinductive and vasculogenic growth factors. However, success depends on sustained growth factor release and its appropriate combination to induce stem cells and osteogenic cells at the bony site. Herein, we have developed a nanocomposite fibrous scaffold loaded with fibroblast growth factor 2 (FGF2), vascular endothelial growth factor (VEGF) and bone morphogenetic protein 2 (BMP2) and its ability to promote vascularisation and bone regeneration in critical sized calvarial defect was compared to the scaffold with VEGF + BMP2 and FGF2 + BMP2. Simple loading of growth factors on the scaffold could provide a differential release pattern, both in vitro and in vivo (VEGF release for 1 week where as BMP2 and FGF2 release for 3 weeks). Among all the groups, dual growth factor loaded scaffold (VEGF + BMP2 & FGF2 + BMP2) enhanced vascularisation and new bone formation, but there was no difference between FGF2 and VEGF loaded scaffolds although its release pattern was different. FGF2 mainly promoted stem cell migration, whereas VEGF augmented new blood vessel formation at the defect site. This study suggests that biomimetic nanocomposite scaffold is a promising growth factor delivery vehicle to improve bone regeneration in critical sized bone defects. STATEMENT OF SIGNIFICANCE Many studies have shown the effect of growth factors like VEGF-BMP2 or FGF2-BMP2 in enhancing bone formation in critical sized defects, but there are no reports that demonstrate the direct comparison of VEGF-BMP2 and FGF2-BMP2. In this study, we have developed a nanocomposite fibrous scaffold that could differentially release growth factors like VEGF, BMP2 and FGF2 (VEGF release for 1 week where as BMP2 and FGF2 release for 3 weeks), which in turn promoted neovascularisation and new bone formation in critical sized defects. There was no difference in vascularisation and bone formation induced by VEGF + BMP2 or FGF2 + BMP2. The growth factor was loaded in a simple manner, which would ensure ease of use for the end-user, especially for the surgeons treating a patient in an operating room.
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