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Stahl A, Park YB, Park SH, Lin S, Pan C, Kim S, Yang Y. Probing the role of methyl methacrylate release from spacer materials in induced membrane bone healing. J Orthop Res 2022; 40:1065-1074. [PMID: 34314063 PMCID: PMC8792109 DOI: 10.1002/jor.25147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 06/30/2021] [Accepted: 07/14/2021] [Indexed: 02/06/2023]
Abstract
In the induced membrane (IM) technique for bone reconstruction, a poly(methyl methacrylate) (PMMA) spacer is implanted to induce formation of a foreign body membrane around the defect site. Membrane development is essential for later bone grafting success, yet the mechanism by which the IM promotes bone regeneration remains unknown, as are the ways that spacer composition plays a role in the membrane's healing potential. This study investigated the impact of leached methyl methacrylate (MMA)-the major monomeric component of PMMA-on IM development. In vitro cell culture found that MMA elution did not impact endothelial cell or mesenchymal stem cell proliferation. For in vivo analysis, we advanced a streamlined rat femoral model to efficiently study the influence of spacer properties on IM characteristics. Comparison of membrane formation around polycaprolactone (PCL), MMA-eluting PCL (high-dose PCL-MMA and low-dose PCL-MMA), and surgical PMMA revealed robust membranes enveloped all groups after 4 weeks in vivo, with elevated expression of osteogenic bone morphogenetic protein-2 and angiogenic vascular endothelial growth factor compared with the surrounding muscle and bone tissues. Growth factor quantitation in IM tissue found no statistically significant difference between groups. New bone growth, vascularization, and CD163+ macrophage populations surrounding the polymer implants were also quantified; and blood vessel formation around high-dose PCL-MMA was found to be significantly decreased compared with PCL alone. To the best of our knowledge, these findings represent the first time that results have been obtained about the characteristics of membranes formed around PCL in the IM setting.
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Affiliation(s)
- A. Stahl
- Department of Orthopaedic Surgery, Stanford University, 240 Pasteur Drive, Stanford, CA 94304, USA,Department of Chemistry, Stanford University, 121 Mudd Building, CA 94305, USA
| | - YB. Park
- Department of Orthopaedic Surgery, Stanford University, 240 Pasteur Drive, Stanford, CA 94304, USA,Department of Prosthodontics, Yonsei University College of Dentistry, Seoul 120-752, Korea
| | - SH. Park
- Osong Research Institute, TaeWoong Medical Co., Ltd, 55-7, Osongsaengmyeong 2-ro, Korea
| | - S. Lin
- Department of Orthopaedic Surgery, Stanford University, 240 Pasteur Drive, Stanford, CA 94304, USA
| | - C.C. Pan
- Department of Orthopaedic Surgery, Stanford University, 240 Pasteur Drive, Stanford, CA 94304, USA,Department of Mechanical Engineering, Stanford University, 440 Escondido Mall, Stanford, CA94305, USA
| | - S. Kim
- Department of Orthopaedic Surgery, Stanford University, 240 Pasteur Drive, Stanford, CA 94304, USA
| | - Y.P. Yang
- Department of Orthopaedic Surgery, Stanford University, 240 Pasteur Drive, Stanford, CA 94304, USA,Department of Materials Science and Engineering, Stanford University, 496 Lomita Mall, Stanford, CA94305, USA,Department of Bioengineering, Stanford University, 443 Via Ortega, Stanford, CA94305, USA,Corresponding author: Yunzhi Peter Yang, Ph.D., Professor, Department of Orthopedic Surgery, School of Medicine, Stanford University, 240 Pasteur Drive, BMI 258, Stanford, CA 94304, Tel: 650-723-0772 (office), 650-725-8698 (Lab),
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Hosseini S, Naderi-Manesh H, Vali H, Baghaban Eslaminejad M, Azam Sayahpour F, Sheibani S, Faghihi S. Contribution of osteocalcin-mimetic peptide enhances osteogenic activity and extracellular matrix mineralization of human osteoblast-like cells. Colloids Surf B Biointerfaces 2019; 173:662-671. [DOI: 10.1016/j.colsurfb.2018.10.035] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 09/22/2018] [Accepted: 10/14/2018] [Indexed: 12/20/2022]
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3
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Zhan FL, Liu XY, Wang XB. The Role of MicroRNA-143-5p in the Differentiation of Dental Pulp Stem Cells into Odontoblasts by Targeting Runx2 via the OPG/RANKL Signaling Pathway. J Cell Biochem 2017; 119:536-546. [PMID: 28608628 DOI: 10.1002/jcb.26212] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 06/12/2017] [Indexed: 01/21/2023]
Abstract
This study aims to elucidate the mechanisms by which microRNA-143-5p (miR-143-5p) targets runt-related transcription factor 2 (Runx2) in the differentiation of dental pulp stem cells (DPSCs) into odontoblasts, through regulating the osteoprotegerin receptor activator of the nuclear factor-κB ligand (OPG/RANKL) signaling pathway. Following transfection, DPSCs were divided into blank, control, miR-143-5p mimics, miR-143-5p inhibitors, miR-143-5p inhibitors + siRunx2 and siRunx2 groups. Alkaline phosphatase (ALP) activity and mineralized nodules were detected using ALP kit and alizarin red staining. Quantitative reverse transcriptase real time PCR (qRT-PCR) was conducted to measure mRNA expressions of miR-143-5p, Runx2, OPG, and RANKL. Western blotting was used to assess protein expression of odontoblast differentiation-related proteins. Transwell assay and an extracellular matrix (ECM) adhesion cell assay were employed to examine cell migration and cell adhesion. Compared with the blank group, the miR-143-5p mimics and siRunx2 groups showed decreased ALP activity, decreased mineralized nodules and displays of calcium. Fewer migrated cells, weakened cell adhesion, decreased protein expression of dentin phosphoprotein (DPP), dentin sialoprotein (DSP), dentin matrix protein 1 (DMP1), osteopontin (OPN), bone sialoprotein (BSP), osteocalcin (OCN), OPG and Runx2, and increased RANKL protein expressions were observed. Additionally, opposite results were observed in the miR-143-5p inhibitors group, demonstrating that down-regulated miR-143-5p promotes the differentiation of DPSCs into odontoblasts by enhancing Runx2 expression via the OPG/RANKL signaling pathway. Based on findings in this study, it is postulated that the enhancement of Runx2 expression via the regulation of the OPG/RANKL signaling pathway could be a beneficial approach for dental pulp regeneration. J. Cell. Biochem. 119: 536-546, 2018. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Fu-Liang Zhan
- Department of Endodontics, School of Stomatology, China Medical University, Shenyang, 110002, P.R. China
| | - Xin-Yang Liu
- Department of Endodontics, School of Stomatology, China Medical University, Shenyang, 110002, P.R. China
| | - Xing-Bo Wang
- Department of Endodontics, School of Stomatology, China Medical University, Shenyang, 110002, P.R. China
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Runx2 modified dental pulp stem cells (DPSCs) enhance new bone formation during rapid distraction osteogenesis (DO). Differentiation 2016; 92:195-203. [DOI: 10.1016/j.diff.2016.06.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 05/20/2016] [Accepted: 06/07/2016] [Indexed: 12/11/2022]
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5
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Pountos I, Panteli M, Lampropoulos A, Jones E, Calori GM, Giannoudis PV. The role of peptides in bone healing and regeneration: a systematic review. BMC Med 2016; 14:103. [PMID: 27400961 PMCID: PMC4940902 DOI: 10.1186/s12916-016-0646-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Bone tissue engineering and the research surrounding peptides has expanded significantly over the last few decades. Several peptides have been shown to support and stimulate the bone healing response and have been proposed as therapeutic vehicles for clinical use. The aim of this comprehensive review is to present the clinical and experimental studies analysing the potential role of peptides for bone healing and bone regeneration. METHODS A systematic review according to PRISMA guidelines was conducted. Articles presenting peptides capable of exerting an upregulatory effect on osteoprogenitor cells and bone healing were included in the study. RESULTS Based on the available literature, a significant amount of experimental in vitro and in vivo evidence exists. Several peptides were found to upregulate the bone healing response in experimental models and could act as potential candidates for future clinical applications. However, from the available peptides that reached the level of clinical trials, the presented results are limited. CONCLUSION Further research is desirable to shed more light into the processes governing the osteoprogenitor cellular responses. With further advances in the field of biomimetic materials and scaffolds, new treatment modalities for bone repair will emerge.
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Affiliation(s)
- Ippokratis Pountos
- Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, Leeds, UK
| | - Michalis Panteli
- Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, Leeds, UK
| | | | - Elena Jones
- Unit of Musculoskeletal Disease, Leeds Institute of Rheumatic and Musculoskeletal Medicine, St. James University Hospital, University of Leeds, LS9 7TF, Leeds, UK
| | - Giorgio Maria Calori
- Department of Trauma & Orthopaedics, School of Medicine, ISTITUTO ORTOPEDICO GAETANO PINI, Milan, Italy
| | - Peter V Giannoudis
- Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, Leeds, UK. .,NIHR Leeds Biomedical Research Unit, Chapel Allerton Hospital, LS7 4SA Leeds, West Yorkshire, Leeds, UK.
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Biological basis of distraction osteogenesis – A review. JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY MEDICINE AND PATHOLOGY 2016. [DOI: 10.1016/j.ajoms.2015.05.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kohara Y, Soeta S, Izu Y, Amasaki H. Accumulation of type VI collagen in the primary osteon of the rat femur during postnatal development. J Anat 2015; 226:478-88. [PMID: 25943007 DOI: 10.1111/joa.12296] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2015] [Indexed: 12/17/2022] Open
Abstract
In rodents, the long bone diaphysis is expanded by forming primary osteons at the periosteal surface of the cortical bone. This ossification process is thought to be regulated by the microenvironment in the periosteum. Type VI collagen (Col VI), a component of the extracellular matrix (ECM) in the periosteum, is involved in osteoblast differentiation at early stages. In several cell types, Col VI interacts with NG2 on the cytoplasmic membrane to promote cell proliferation, spreading and motility. However, the detailed functions of Col VI and NG2 in the ossification process in the periosteum are still under investigation. In this study, to clarify the relationship between localization of Col VI and formation of the primary osteon, we examined the distribution of Col VI and osteoblast lineages expressing NG2 in the periosteum of rat femoral diaphysis during postnatal growing periods by immunohistochemistry. Primary osteons enclosing the osteonal cavity were clearly identified in the cortical bone from 2 weeks old. The size of the osteonal cavities decreased from the outer to the inner region of the cortical bone. In addition, the osteonal cavities of newly formed primary osteons at the outermost region started to decrease in size after rats reached the age of 4 weeks. Immunohistochemistry revealed concentrated localization of Col VI in the ECM in the osteonal cavity. Col VI-immunoreactive areas were reduced and they disappeared as the osteonal cavities became smaller from the outer to the inner region. In the osteonal cavities of the outer cortical regions, Runx2-immunoreactive spindle-shaped cells and mature osteoblasts were detected in Col VI-immunoreactive areas. The numbers of Runx2-immunoreactive cells were significantly higher in the osteonal cavities than in the osteogenic layers from 2 to 4 weeks. Most of these Runx2-immunoreactive cells showed NG2-immunoreactivity. Furthermore, PCNA-immunoreactivity was detected in the Runx2-immunoreactive spindle cells in the osteonal cavities. These results indicate that Col VI provides a characteristic microenvironment in the osteonal cavity of the primary osteon, and that differentiation and proliferation of the osteoblast lineage occur in the Col VI-immunoreactive area. Interaction of Col VI and NG2 may be involved in the structural organization of the primary osteon by regulating osteoblast lineages.
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Affiliation(s)
- Yukihiro Kohara
- Laboratory of Veterinary Anatomy, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Satoshi Soeta
- Laboratory of Veterinary Anatomy, Nippon Veterinary and Life Science University, Tokyo, Japan
| | - Yayoi Izu
- Department of Molecular Pharmacology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hajime Amasaki
- Laboratory of Veterinary Anatomy, Nippon Veterinary and Life Science University, Tokyo, Japan
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8
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Identification of a common molecular pathway in hypertensive renal damage. J Hypertens 2015; 33:584-96; discussion 596. [DOI: 10.1097/hjh.0000000000000395] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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9
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Abstract
Angiogenesis is a vital component of bone healing. The formation of the new blood vessels at the fracture site restores the hypoxia and nutrient deprivation found at the early stages after fracture whilst at a later stage facilitates osteogenesis by the activity of the osteoprogenitor cells. Emerging evidence suggests that there are certain molecules and gene therapies that could promote new blood vessel formation and as a consequence enhance the local bone healing response. This article summarizes the current in vivo evidence on therapeutic approaches aiming at the augmentation of the angiogenic signalling during bone repair.
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10
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Aoki K, Alles N, Soysa N, Ohya K. Peptide-based delivery to bone. Adv Drug Deliv Rev 2012; 64:1220-38. [PMID: 22709649 DOI: 10.1016/j.addr.2012.05.017] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Revised: 05/29/2012] [Accepted: 05/29/2012] [Indexed: 01/26/2023]
Abstract
Peptides are attractive as novel therapeutic reagents, since they are flexible in adopting and mimicking the local structural features of proteins. Versatile capabilities to perform organic synthetic manipulations are another unique feature of peptides compared to protein-based medicines, such as antibodies. On the other hand, a disadvantage of using a peptide for a therapeutic purpose is its low stability and/or high level of aggregation. During the past two decades, numerous peptides were developed for the treatment of bone diseases, and some peptides have already been used for local applications to repair bone defects in the clinic. However, very few peptides have the ability to form bone themselves. We herein summarize the effects of the therapeutic peptides on bone loss and/or local bone defects, including the results from basic studies. We also herein describe some possible methods for overcoming the obstacles associated with using therapeutic peptide candidates.
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Affiliation(s)
- Kazuhiro Aoki
- Dept. of Hard Tissue Engineering (Pharmacology), Graduate School, Tokyo Medical & Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan.
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11
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Taneja K, Pareek A, Verma P, Jain V, Ratan Y, Ashawat MS. Nanocomposite: An emerging tool for bone tissue transplantation and drug delivery. INDIAN JOURNAL OF TRANSPLANTATION 2012. [DOI: 10.1016/j.ijt.2012.07.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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12
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Perrien DS, Nicks KM, Liu L, Akel NS, Bacon AW, Skinner RA, Swain FL, Aronson J, Suva LJ, Gaddy D. Inhibin A enhances bone formation during distraction osteogenesis. J Orthop Res 2012; 30:288-95. [PMID: 21809377 PMCID: PMC3737578 DOI: 10.1002/jor.21501] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Accepted: 06/28/2011] [Indexed: 02/04/2023]
Abstract
Given the aging population and the increased incidence of fracture in the elderly population, the need exists for agents that can enhance bone healing, particularly in situations of delayed fracture healing and/or non-union. Our previous studies demonstrated that overexpression of the gonadal peptide, human inhibin A (hInhA), in transgenic mice enhances bone formation and strength via increased osteoblast activity. We tested the hypothesis that hInhA can also exert anabolic effects in a murine model of distraction osteogenesis (DO), using both transgenic hInhA overexpression and administration of normal physiological levels of hInhA in adult male Swiss-Webster mice. Tibial osteotomies and external ring fixation were performed, followed by a 3-day latency period, 14-day distraction, and sacrifice on day 18. Supraphysiological levels of hInhA in transgenic mice, but not normal physiological levels of hInhA, significantly increased endosteal bone formation and mineralized bone area in the distraction gap, as determined by radiographic and µCT analysis. Significantly, increased PCNA and osteocalcin expression in the primary matrix front suggested that hInhA increased osteoblast proliferation. This mechanism is consistent with the effects of other agents and pathologies that modulate bone formation during DO, and demonstrates the potential of hInhA to enhance bone repair and regeneration.
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Affiliation(s)
- Daniel S. Perrien
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 505, Little Rock, AR 72205
| | - Kristy M. Nicks
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 505, Little Rock, AR 72205
| | - Lichu Liu
- Center for Orthopaedic Research, Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 644, Little Rock, AR 72205
| | - Nisreen S. Akel
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 505, Little Rock, AR 72205
| | - Anthony W. Bacon
- Center for Orthopaedic Research, Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 644, Little Rock, AR 72205
| | - Robert A. Skinner
- Center for Orthopaedic Research, Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 644, Little Rock, AR 72205
| | - Frances L. Swain
- Center for Orthopaedic Research, Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 644, Little Rock, AR 72205
| | - James Aronson
- Center for Orthopaedic Research, Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 644, Little Rock, AR 72205
| | - Larry J Suva
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 505, Little Rock, AR 72205,Center for Orthopaedic Research, Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 644, Little Rock, AR 72205
| | - Dana Gaddy
- Department of Physiology and Biophysics, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 505, Little Rock, AR 72205,Center for Orthopaedic Research, Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 644, Little Rock, AR 72205,Send reprint requests to: Dana Gaddy, Ph.D., University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 505, Little Rock, AR 72205, 501-686-5918, 501-686-8167 FAX,
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Wen Y, Gallego MR, Nielsen LF, Jorgensen L, Everland H, Møller EH, Nielsen HM. Biodegradable nanocomposite microparticles as drug delivering injectable cell scaffolds. J Control Release 2011; 156:11-20. [DOI: 10.1016/j.jconrel.2011.07.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 07/07/2011] [Accepted: 07/09/2011] [Indexed: 12/12/2022]
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Zhao ZY, Shao L, Zhao HM, Zhong ZH, Liu JY, Hao CG. Osteogenic Growth Peptide Accelerates Bone Healing during Distraction Osteogenesis in Rabbit Tibia. J Int Med Res 2011; 39:456-63. [PMID: 21672349 DOI: 10.1177/147323001103900213] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Distraction osteogenesis is a valuable treatment method that allows limb lengthening or reconstruction of large bone defects. However, its major disadvantage is the long period required for the consolidation of a distraction callus. Osteogenic growth peptide (OGP) stimulates endochondral bone formation in fracture callus, but its capacity to promote regenerate ossification during distraction osteogenesis has not been evaluated. This study investigated whether intravenously administered OGP accelerated bone healing during distraction osteogenesis in 36 male New Zealand White rabbits, randomized into two groups. The treatment group received OGP (200 ng/kg body weight) in phosphate-buffered saline (PBS), intravenously, each day; the control group received PBS alone. A 15-mm lengthening of the right lower leg was performed using the method of Ilizarov. Evidence from biomechanical, histological and radiographic evaluations demonstrated that systemic OGP treatment promoted optimal new bone formation during distraction osteogenesis in this rabbit model.
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Affiliation(s)
- Z-Y Zhao
- Department of Orthopaedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - L Shao
- Department of Orthopaedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - H-M Zhao
- Department of Gynaecology, The Third Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Z-H Zhong
- Department of Microbiology, Harbin Medical University, Harbin, China
| | - J-Y Liu
- Department of Orthopaedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - C-G Hao
- Department of Orthopaedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
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Dolatshahi-Pirouz A, Kolman N, Arpanaei A, Jensen T, Foss M, Chevallier J, Kingshott P, Baas J, Søballe K, Besenbacher F. The adsorption characteristics of osteopontin on hydroxyapatite and gold. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2010.10.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Cakarer S, Olgac V, Aksakalli N, Tang A, Keskin C. Acceleration of consolidation period by thrombin peptide 508 in tibial distraction osteogenesis in rats. Br J Oral Maxillofac Surg 2010; 48:633-6. [DOI: 10.1016/j.bjoms.2009.11.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2009] [Accepted: 11/19/2009] [Indexed: 11/15/2022]
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17
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Kamo K, Miyakoshi N, Kasukawa Y, Sasaki H, Shimada Y. Effects of single and cyclical local injections of basic fibroblast growth factor on cancellous bone defects in rabbits. J Orthop Sci 2009; 14:811-9. [PMID: 19997830 DOI: 10.1007/s00776-009-1403-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2009] [Accepted: 08/13/2009] [Indexed: 11/28/2022]
Abstract
BACKGROUND Local administration of basic fibroblast growth factor (bFGF) has anabolic effects on bone formation. A delivery system for local treatment is required to increase efficacy because of its short half-life. However, little is known about the effects of cyclical local injection of bFGF. We evaluated the effects of single and cyclical local injection of bFGF at a cancellous bone defect in the femoral condyle in rabbits. METHODS Using the "vehicle only" as a control, a single low dose (40 microg), single high dose (120 microg), or cyclical low dose (40 microg, three times) of bFGF was injected percutaneously into a bone defect implanted with a gelatin sponge. The rabbits were killed at 4 weeks after surgery and the femurs were harvested for evaluation. RESULTS Both single and cyclical administration of bFGF dose-dependently increased the amount of new bone formation in the bone defect using radiographs (P < 0.01) and bone mineral density (BMD) measurements (P < 0.01) compared to controls. However, only high-dose bFGF injection significantly increased the cancellous bone volume at the bone defect (P < 0.05) compared to controls, using bone histomorphometry. Cyclical injection of bFGF significantly increased the number of runt-related transcription factor-2 (Runx2)-positive cells compared to single low- and high-dose bFGF administration (P < 0.01 and P < 0.05, respectively), and single high-dose and cyclical administration significantly increased the number of osteopontin-positive cells compared to controls (P < 0.01), based on immunohistochemical analysis. CONCLUSIONS These results suggest that high-dose injection of bFGF, at the very early stage of cancellous bone healing, is more effective in increasing cancellous bone volume, and cyclical injection of bFGF may stimulate osteoprogenitor cells.
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Affiliation(s)
- Keiji Kamo
- Department of Orthopedic Surgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan
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18
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Bone regeneration during distraction osteogenesis. Odontology 2009; 97:63-75. [DOI: 10.1007/s10266-009-0101-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2008] [Accepted: 01/05/2009] [Indexed: 01/09/2023]
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Abbaspour A, Takahashi M, Sairyo K, Takata S, Yukata K, Inui A, Yasui N. Optimal increase in bone mass by continuous local infusion of alendronate during distraction osteogenesis in rabbits. Bone 2009; 44:917-23. [PMID: 19442623 DOI: 10.1016/j.bone.2009.01.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2008] [Revised: 12/25/2008] [Accepted: 01/06/2009] [Indexed: 11/22/2022]
Abstract
Several methods have been used to increase bone mass in distraction osteogenesis. Since bone resorption as well as regeneration is stimulated in the distracted segment, bisphosphonate can be a beneficial agent for distraction osteogenesis. Here, we examined the effects of bisphosphonate injected continuously into the regenerate on bone volume, and architectural and mechanical properties of distraction osteogenesis. The left tibia of Japanese White rabbits (n=66) was subjected to slow distraction using an external fixator. At the beginning of the consolidation phase, alendronate (7 microg/kg/day) was infused directly into the lengthened segment for 14 days using an osmotic pump. Control rabbits were infused with phosphate buffered saline (PBS). The tibiae were monitored weekly by soft X-ray and dual-energy X-ray absorptiometry (DXA). The animals were sacrificed at 4, 6, and 8 weeks after operation to examine bone mineral density (BMD) and cortical bone thickness (CBT) by peripheral quantitative computerized tomography (pQCT), while the mechanical property of the lengthened tibia was measured by three-point bending test. In PBS-infused control animals, bone mineral content around the lengthened segment began to decrease after the first week of consolidation phase, forming a tubular bone structure with thin cortex. Infusion of alendronate increased peak bone mineral content around the lengthened segment. At the end of the experiment, volumetric BMD, CBT and mechanical strength of the lengthened segment of the treatment group were approximately twice those of the control animals. Alendronate infused in this manner significantly prevented the osteopenia that critically began early in the consolidation phase, though the dose used in this study was relatively low and no adverse events were noted.
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Affiliation(s)
- Aziz Abbaspour
- Department of Orthopedics, Institute of Health Biosciences, The University of Tokushima Graduate School of Medicine, Kuramoto, Tokushima, Japan
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Dierkes C, Kreisel M, Schulz A, Steinmeyer J, Wolff JC, Fink L. Catabolic properties of microdissected human endosteal bone lining cells. Calcif Tissue Int 2009; 84:146-55. [PMID: 19139801 DOI: 10.1007/s00223-008-9213-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2008] [Accepted: 12/18/2008] [Indexed: 12/29/2022]
Abstract
Bone lining cells cover > 80% of endosteal surfaces of human cancellous bone. Current research assigns to them a dual role: (1) as a biological membrane regulating exchange of substrates between the bone fluid compartment and the extracellular fluid of bone marrow and (2) as a signaling link between the osteocytic network as mechanical receptor and the osteoclastic cell pool for local induction of bone resorption. Furthermore, a catabolic role has been considered. We therefore examined the presence of matrix-metalloproteinases (MMPs) and their physiological tissue inhibitors (TIMPs) as putative proteolytic elements. Firstly, human cancellous bone from 60 patients was examined by immunofluorescence with antibodies against MMPs and TIMPs. Secondly, we applied laser-assisted microdissection (LMD) to isolate bone lining cells from frozen sections of human trabecular bone. mRNA analysis was performed using a single-cell PCR protocol. Three laser microdissection systems were tested: the new generation of Leica LMD and P.A.L.M. laser pressure catapulting (LPC) were compared to P.A.L.M. laser microdissection and micromanipulation (LMM). In a few pooled cell profiles, mRNA of MMP13, MMP14, TIMP1, and CBFA-1 was clearly detected. By immunofluorescence MMP13 and -14 as well as TIMP1 and -2 were strongly present in lining cells, while MMP2, TIMP3, and TIMP4 showed weak or negative signals. Although the functional impact of these enzymatic components remains open, there is additional evidence for a catabolic function of lining cells. The new diode-laser microdissection with LMD and LPC proved to be especially suitable to gain new insights into the properties of bone lining cells.
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Affiliation(s)
- C Dierkes
- Department of Pathology, Justus-Liebig University, Langhansstr. 10, Giessen 35385, Germany.
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Mandibular distraction osteogenesis in the pediatric patient. Curr Opin Otolaryngol Head Neck Surg 2008; 16:548-54. [DOI: 10.1097/moo.0b013e3283177f81] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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DiCarlo AL, Hatchett RJ, Kaminski JM, Ledney GD, Pellmar TC, Okunieff P, Ramakrishnan N. Medical countermeasures for radiation combined injury: radiation with burn, blast, trauma and/or sepsis. report of an NIAID Workshop, March 26-27, 2007. Radiat Res 2008; 169:712-21. [PMID: 18494548 DOI: 10.1667/rr1295.1] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2007] [Accepted: 12/30/2007] [Indexed: 11/03/2022]
Abstract
Non-clinical human radiation exposure events such as the Hiroshima and Nagasaki bombings or the Chernobyl accident are often coupled with other forms of injury, such as wounds, burns, blunt trauma, and infection. Radiation combined injury would also be expected after a radiological or nuclear attack. Few animal models of radiation combined injury exist, and mechanisms underlying the high mortality associated with complex radiation injuries are poorly understood. Medical countermeasures are currently available for management of the non-radiation components of radiation combined injury, but it is not known whether treatments for other insults will be effective when the injury is combined with radiation exposure. Further research is needed to elucidate mechanisms behind the synergistic lethality of radiation combined injury and to identify targets for medical countermeasures. To address these issues, the National Institute of Allergy and Infectious Diseases convened a workshop to make recommendations on the development of animal models of radiation combined injury, possible mechanisms of radiation combined injury, and future directions for countermeasure research, including target identification and end points to evaluate treatment efficacy.
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Affiliation(s)
- Andrea L DiCarlo
- Division of Allergy, Immunology and Transplantation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
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