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Nurrachman AS, Azhari A, Epsilawati L, Pramanik F. Temporal Pattern of micro-CT Angiography Vascular Parameters and VEGF mRNA Expression in Fracture Healing: a Radiograph and Molecular Comparison. Eur J Dent 2023. [PMID: 36716788 DOI: 10.1055/s-0042-1757466] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Angiogenesis plays an important role in fracture healing with vascular endothelial growth factor (VEGF) as the main protein involved. Micro-computed tomography (CT) angiography may be used to analyze this revascularization with several parameters such as number of branches, total volume, and diameter. This systematic review is aimed to assess available studies on the temporal pattern of vascular imaging on micro-CT angiographs, especially in terms of the number of branches, total volume, and diameter as well as the temporal pattern of VEGF mRNA expression as the molecular comparison during bone fracture healing. This review was conducted according to the PRISMA guidelines. Electronic database searches were performed using PubMed, ProQuest, ScienceDirect, EBSCOhost, Taylor & Francis Online, and hand searching. The search strategy and keywords were adjusted to each database using the Boolean operators and other available limit functions to identify most relevant articles based on our inclusion and exclusion criteria. Screening and filtration were done in several stages by removing the duplicates and analyzing each title, abstract, and full-text in all included entries. Data extraction was done for syntheses to summarize the temporal pattern of each parameter. A total of 28 articles were eligible and met all criteria, 11 articles were synthesized in its angiograph's analysis, 16 articles were synthesized in its VEGF mRNA expression analysis, and 1 article had both parameters analyzed. The overall temporal pattern of both three micro-CT angiographic parameters and VEGF mRNA expression was in line qualitatively. The number of branches, total volume, and diameter of the blood vessels in micro-CT angiography showed an exponential rise at week 2 and decline at week 3 of fracture healing, with the VEGF mRNA expression concurrently showing a consistent pattern in the phase.
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Affiliation(s)
- Aga Satria Nurrachman
- Department of Oral and Maxillofacial Radiology, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Azhari Azhari
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Padjadjaran University, Bandung, West Java, Indonesia
| | - Lusi Epsilawati
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Padjadjaran University, Bandung, West Java, Indonesia
| | - Farina Pramanik
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Padjadjaran University, Bandung, West Java, Indonesia
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2
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Prakash R, Mishra T, Dev K, Sharma K, Kuldeep J, John AA, Tripathi A, Sharma C, Arya KR, Kumar B, Siddiqi MI, Tadigoppula N, Singh D. Phenanthrenoid Coelogin Isolated from Coelogyne cristata Exerts Osteoprotective Effect Through MAPK-Mitogen-Activated Protein Kinase Signaling Pathway. Calcif Tissue Int 2021; 109:32-43. [PMID: 33675370 DOI: 10.1007/s00223-021-00818-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 01/30/2021] [Indexed: 10/22/2022]
Abstract
Osteoporosis is a major health problem in postmenopausal women globally. This study determined the mechanism through which coelogin stimulates osteoblastogenesis and its osteoprotective and bone regenerating potential. Coelogin effect on primary calvarial osteoblast cells was determined by measuring alkaline phosphatase activity, mineralization, osteoblast survival, and apoptosis and protein expression studies. The osteoprotective effect of coelogin was also evaluated on osteopenic adult female Swiss mice. At autopsy, bones were collected for dynamic and histomorphometry studies. Serum samples were also collected for assessment of serum parameters. Coelogin treatment led to increased osteoblast proliferation, survival, differentiation, and mineralization in osteoblast cells. Coelogin supplementation to Ovx mice promoted new bone formation, prevented Ovx-induced deterioration of bone microarchitecture, and enhanced bone regeneration. In addition, signaling studies revealed that coelogin treatment activates the ER-Erk and Akt-dependent signaling pathways which stimulate the osteoblastogenesis in osteoblast cells.
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Affiliation(s)
- Ravi Prakash
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Tripti Mishra
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Kapil Dev
- Ethnobotany Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Kriti Sharma
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Jitendra Kuldeep
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Aijaz Ahmad John
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Alok Tripathi
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Chetan Sharma
- Ethnobotany Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Kamal Ram Arya
- Ethnobotany Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Brijesh Kumar
- Sophisticated Analytical Instrument Facility, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Mohd Imran Siddiqi
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India
| | - Narender Tadigoppula
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India.
| | - Divya Singh
- Endocrinology Division, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh, 226031, India.
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3
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Ikedo A, Imai Y. Estrogen receptor α in mature osteoblasts regulates the late stage of bone regeneration. Biochem Biophys Res Commun 2021; 559:238-244. [PMID: 33964733 DOI: 10.1016/j.bbrc.2021.04.112] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 04/27/2021] [Indexed: 11/16/2022]
Abstract
Estrogen deficiency impairs fracture healing and homeostasis of bone tissue. OVX-induced estrogen deficiency in mice attenuates fracture healing and changes the expression ratio of estrogen receptor (ER) α and ERβ in callus during the process of fracture healing. Therefore, ERs may be involved in the regulation of fracture healing. However, the roles of ERs in fracture healing are largely unknown. The purpose of this study was to clarify the significance of ERs during fracture healing using osteoblast-specific ER knockout mice in a mono-cortical drill hole bone regeneration model. The mature osteoblast-specific ER knockout mice were generated using osteocalcin (OCN)-Cre mice, and ERα and ERβ flox mice (OCN-Cre; ERαf/f, ERαΔOb/ΔOb and OCN-Cre; ERβf/f, ERβΔOb/ΔOb). Drill hole surgery was conducted on the tibiae of 8-week-old female mice. The mice were sacrificed 10 or 14 days after surgery and the bones were analyzed by DXA, μCT and bone histomorphometry. DXA analysis revealed that intact femoral BMD was significantly decreased in ERαΔOb/ΔOb mice compared with ERαf/f mice, but there was no difference in bone mass between ERβΔOb/ΔOb and ERβf/f mice. Micro CT analyses showed that the callus volume at the restricted drill hole site in tibiae was significantly less in ERαΔOb/ΔOb compared to ERαf/f mice only at day 14 but not at day 10. In addition to femoral BMD, there was no significant difference in callus volume between ERβΔOb/ΔOb and ERβf/f mice. Bone histomorphometric analyses showed that Ob.S/BS and N.Ob/B.Pm were significantly less in ERαΔOb/ΔOb mice compared with ERαf/f mice only at day 10. In addition, Oc.S/BS and N.Oc/B.Pm were significantly less in ERαΔOb/ΔOb mice compared with ERαf/f mice only at day 14. These results suggest that ERα but not ERβ in osteocalcin-positive osteoblasts may contribute to the late stage of bone regeneration.
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Affiliation(s)
- Aoi Ikedo
- Division of Integrative Pathophysiology, Proteo-Science Center, Ehime University, Ehime, Japan
| | - Yuuki Imai
- Division of Integrative Pathophysiology, Proteo-Science Center, Ehime University, Ehime, Japan; Department of Pathophysiology, Ehime University Graduate School of Medicine, Ehime, Japan.
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Apaza Alccayhuaman KA, Heimel P, Lee JS, Tangl S, Strauss FJ, Stähli A, Matalová E, Gruber R. FasL Is Required for Osseous Healing in Extraction Sockets in Mice. Front Immunol 2021; 12:678873. [PMID: 34135904 PMCID: PMC8200669 DOI: 10.3389/fimmu.2021.678873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 05/10/2021] [Indexed: 01/15/2023] Open
Abstract
Fas ligand (FasL) is a member of the tumor necrosis factor (TNF) superfamily involved in the activation of apoptosis. Assuming that apoptosis is initiated after tooth extraction it is reasonable to suggest that FasL may play a pivotal role in the healing of extraction sockets. Herein, we tested the hypothesis of whether the lack of FasL impairs the healing of extraction sockets. To this end, we extracted upper right incisors of FasL knockout (KO) mice and their wildtype (WT) littermates. After a healing period of two weeks, bone volume over total volume (BV/TV) via µCT and descriptive histological analyses were performed. µCT revealed that BV/TV in the coronal region of the socket amounted to 39.4% in WT and 21.8% in KO, with a significant difference between the groups (p=0.002). Likewise, in the middle region of the socket, BV/TV amounted to 50.3% in WT and 40.8% in KO (p<0.001). In the apical part, however, no difference was noticed. Consistently, WT mice displayed a significantly higher median trabecular thickness and a lower trabecular separation when compared to the KO group at the coronal and central region of the socket. There was the overall tendency that in both, female and male mice, FasL affects bone regeneration. Taken together, these findings suggest that FasL deficiency may reduce bone regeneration during the healing process of extraction sockets.
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Affiliation(s)
- Karol Alí Apaza Alccayhuaman
- Department of Oral Biology, Medical University of Vienna, Vienna, Austria.,Karl Donath Laboratory for Hard Tissue and Biomaterial Research, School of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Patrick Heimel
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, School of Dentistry, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Medical University of Vienna, Vienna, Austria
| | - Jung-Seok Lee
- Department of Oral Biology, Medical University of Vienna, Vienna, Austria.,Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, South Korea
| | - Stefan Tangl
- Karl Donath Laboratory for Hard Tissue and Biomaterial Research, School of Dentistry, Medical University of Vienna, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Medical University of Vienna, Vienna, Austria
| | - Franz J Strauss
- Department of Oral Biology, Medical University of Vienna, Vienna, Austria.,Clinic of Reconstructive Dentistry, University of Zurich, Zurich, Switzerland.,Department of Conservative Dentistry, School of Dentistry, University of Chile, Santiago, Chile
| | - Alexandra Stähli
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Eva Matalová
- Institute of Animal Physiology and Genetics, Czech Academy of Sciences, Brno, Czechia
| | - Reinhard Gruber
- Department of Oral Biology, Medical University of Vienna, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Medical University of Vienna, Vienna, Austria.,Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
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5
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Ni M, Sun W, Li Y, Ding L, Lin W, Peng H, Zheng Q, Sun J, Li J, Liu H, Yang Y, Xu L, Zhang G. Sox11 Modified Tendon-Derived Stem Cells Promote the Repair of Osteonecrosis of Femoral Head. Cell Transplant 2021; 30:9636897211053870. [PMID: 34699265 PMCID: PMC8552377 DOI: 10.1177/09636897211053870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/26/2021] [Accepted: 09/29/2021] [Indexed: 11/23/2022] Open
Abstract
Osteonecrosis of the femoral head (ONFH) is a leading cause of mobility impairment which may lead to a total hip replacement. Recent studies have found tendon derived stem cells (TDSCs) might be an ideal cell source for musculoskeletal tissue regeneration. And our previous study has shown Sox11 could promote osteogenesis of bone marrow-derived MSCs. However, the effect of TDSCs or Sox11 over-expressing TDSCs (TDSCs-Sox11) on bone regeneration in ONFH has not been investigated. In the present study, TDSCs were infected with AAV carrying Sox11 or empty vector. We showed that Sox11 could promote the proliferation and osteogenic differentiation of TDSCs, as well as angiogenesis in vitro. The western blot analysis showed that Sox11 could activate the PI3K/Akt signaling pathway to promote osteogenesis of TDSCs. Finally, using a rabbit model of hormone-induced ONFH, our result demonstrated that local administration of TDSCs or TDSCs overexpressing Sox11 could accelerate bone regeneration in necrotic femoral heads, and TDSCs overexpressing Sox11 showed better effects. TDSCs over-expressing Sox11 might be a promising cell source for stem cell therapy to promote bone regeneration, such as ONFH, fracture, bone defect, and so on.
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Affiliation(s)
- Ming Ni
- Department of Orthopedics, the First Medical Center, Chinese PLA General Hospital, Beijing, P.R. China
- Contributed equally as first authors
| | - Weiwei Sun
- Department of Anesthesiology, the First Medical Center, Chinese People’s Liberation Army (PLA) General Hospital, Beijing, P.R. China
- Contributed equally as first authors
| | - Yucong Li
- Department of Orthopedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Lingli Ding
- Lingnan Medical Research Center, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Weiping Lin
- Department of Orthopedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Haiwen Peng
- Department of Orthopedics, the First Medical Center, Chinese PLA General Hospital, Beijing, P.R. China
| | - Qingyuan Zheng
- Department of Orthopedics, the First Medical Center, Chinese PLA General Hospital, Beijing, P.R. China
| | - Jingyang Sun
- Department of Orthopedics, the First Medical Center, Chinese PLA General Hospital, Beijing, P.R. China
| | - Juncheng Li
- Department of Orthopedics, the First Medical Center, Chinese PLA General Hospital, Beijing, P.R. China
| | - Hao Liu
- Department of Orthopedics, the First Medical Center, Chinese PLA General Hospital, Beijing, P.R. China
| | - Yi Yang
- Central Laboratory, Department of Cardiology, Affiliated Hospital of Yangzhou University, Yangzhou, China
| | - Liangliang Xu
- Lingnan Medical Research Center, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Guoqiang Zhang
- Department of Orthopedics, the First Medical Center, Chinese PLA General Hospital, Beijing, P.R. China
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6
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Hou Y, Lin W, Li Y, Sun Y, Liu Y, Chen C, Jiang X, Li G, Xu L. De-osteogenic-differentiated mesenchymal stem cells accelerate fracture healing by mir-92b. J Orthop Translat 2020; 27:25-32. [PMID: 33344169 PMCID: PMC7736910 DOI: 10.1016/j.jot.2020.10.009] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 10/05/2020] [Accepted: 10/23/2020] [Indexed: 12/20/2022] Open
Abstract
Background Mesenchymal stem cells (MSCs) are promising targets for therapeutic use in regenerative medicine and tissue engineering. In the previous study, we have found that MSCs could be reverted to a primitive stem cell population after in vitro induction of osteogenic and de-osteogenic differentiation (de-osteogenic differentiated MSCs, De-Os-MSCs). De-Os-MSCs showed improved cell survival and osteogenic potential. However, the underlying mechanism and its potential effect on fracture healing has not been explored. Methods MSCs were isolated from the rat bone marrow. MicroRNAs were cloned into lentiviral vectors and transduced into MSCs to observe the effects on osteogenesis. The expression levels of marker genes were evaluated by quantitative RT-PCR. Ectopic bone formation model was used to evaluate the bone regeneration ability of mir-92b transduced MSCs in vivo. An open femur fracture model was established, and MSCs or De-Os-MSCs were administrated to the fracture sites. Histological, biomechanical and microCT analysis were used to evaluate the quality of bone. Results In the present study, we found that mir-92b was significantly increased in the secretions of De-Os-MSCs. And mir-92b could promote the osteogenic differentiation potential of MSCs by activating pERK and JNK signaling pathways. The ectopic bone formation assay showed that MSCs overexpressing mir-92b formed more bone like tissues in vivo. Most importantly, we found local administration of De-Os-MSCs could accelerate fracture healing using an open femur fracture model in rats. The quality of bone property was much better as shown by microCT and biomechanical testing. Conclusion Taken together, our study demonstrated that mir-92b promoted osteogenesis of MSCs, which was partially accounted for the enhanced osteogenic differentiation potential of De-Os-MSCs. And De-Os-MSCs had shown better regenerative capacity in accelerating fracture healing when they were locally given. The translational potential of this article De-Os-MSCs could be used to accelerate fracture healing, and reduce the occurrence of delayed unions and non-unions.
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Affiliation(s)
- Yonghui Hou
- Key Laboratory of Orthopaedics & Traumatology, Guangdong Provincial Hospital of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Lingnan Medical Research Center, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Weiping Lin
- Department of Orthopaedics & Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, PR China
| | - Ying Li
- Lingnan Medical Research Center, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuxin Sun
- Department of Orthopaedics and Traumatology, Bao-An District People's Hospital, Shenzhen, PR China
| | - Yamei Liu
- Departments of Diagnostics of Traditional Chinese Medicine, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong, 510006, PR China
| | - Chen Chen
- Departments of Diagnostics of Traditional Chinese Medicine, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong, 510006, PR China
| | - Xiaohua Jiang
- Epithelial Cell Biology Research Center, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, PR China
| | - Gang Li
- Department of Orthopaedics & Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, PR China.,Stem Cells and Regenerative Medicine Laboratory, Lui Che Woo Institute of Innovative Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, PR China
| | - Liangliang Xu
- Lingnan Medical Research Center, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
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Collier CD, Hausman BS, Zulqadar SH, Din ES, Anderson JM, Akkus O, Greenfield EM. Characterization of a reproducible model of fracture healing in mice using an open femoral osteotomy. Bone Rep 2020; 12:100250. [PMID: 32090156 PMCID: PMC7025178 DOI: 10.1016/j.bonr.2020.100250] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/26/2020] [Accepted: 02/03/2020] [Indexed: 01/03/2023] Open
Abstract
Purpose The classic fracture model, described by Bonnarens and Einhorn in 1984, enlists a blunt guillotine to generate a closed fracture in a pre-stabilized rodent femur. However, in less experienced hands, this technique yields considerable variability in fracture pattern and requires highly-specialized equipment. This study describes a reproducible and low-cost model of mouse fracture healing using an open femoral osteotomy. Methods Femur fractures were produced in skeletally mature male and female mice using an open femoral osteotomy after intramedullary stabilization. Mice were recovered for up to 28 days prior to analysis with microradiographs, histomorphometry, a novel μCT methodology, and biomechanical torsion testing at weekly intervals. Results Eight mice were excluded due to complications (8/193, 4.1%), including unacceptable fracture pattern (2/193, 1.0%). Microradiographs showed progression of the fracture site to mineralized callus by 14 days and remodelling 28 days after surgery. Histomorphometry from 14 to 28 days revealed decreased cartilage area and maintained bone area. μCT analysis demonstrated a reduction in mineral surface from 14 to 28 days, stable mineral volume, decreased strut number, and increased strut thickness. Torsion testing at 21 days showed that fractured femurs had 61% of the ultimate torque, 63% of the stiffness, and similar twist to failure when compared to unfractured contralateral femurs. Conclusions The fracture model described herein, an open femoral osteotomy, demonstrated healing comparable to that reported using closed techniques. This simple model could be used in future research with improved reliability and reduced costs compared to the current options. This study characterized a simple and reproducible model of fracture healing in mice using an open femoral osteotomy. Analysis by x-ray, histomorphometry, µCT, and biomechanical testing demonstrated healing comparable to current models. This simple model could be used to increase investigation into fracture healing, delayed union, and non-union.
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Affiliation(s)
- C D Collier
- Department of Orthopaedics, University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland, OH 44106, USA
| | - B S Hausman
- Department of Orthopaedics, University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland, OH 44106, USA
| | - S H Zulqadar
- Department of Orthopaedics, University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland, OH 44106, USA
| | - E S Din
- Department of Orthopaedics, University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland, OH 44106, USA
| | - J M Anderson
- Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA
| | - O Akkus
- Department of Orthopaedics, University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland, OH 44106, USA.,Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
| | - E M Greenfield
- Department of Orthopaedics, University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland, OH 44106, USA.,Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA
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8
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Zhang N, Chim YN, Wang J, Wong RMY, Chow SKH, Cheung WH. Impaired Fracture Healing in Sarco-Osteoporotic Mice Can Be Rescued by Vibration Treatment Through Myostatin Suppression. J Orthop Res 2020; 38:277-287. [PMID: 31535727 DOI: 10.1002/jor.24477] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 09/13/2019] [Indexed: 02/04/2023]
Abstract
Sarcopenia is highly prevalent in fragility fracture patients and is associated with delayed healing. In this study, we investigated the effect of low-magnitude high-frequency vibration (LMHFV) on osteoporotic fracture with sarcopenia and the potential role of myostatin. Osteoporotic fractures created in sarcopenic SAMP8, non-sarcopenic SAMR1 were randomized to control or LMHFV (SAMP8, SAMR1, SAMP8-V, or SAMR1-V) groups. Healing and myostatin expression were evaluated at 2, 4, and 6 weeks post-fracture. In vitro, conditioned-media were collected from myofibers isolated from aged and young SAMP8 or C2C12 myoblasts with or without LMHFV. Osteoblastic MC3T3-E1 under osteogenic differentiation were treated with plain or conditioned-medium (±myostatin propeptide). LMHFV significantly enhanced callus formation was in non-sarcopenic SAMR1 mice; but the enhancement effect was not significant in SAMP8 mice at week 2. Myostatin expressions in callus and biceps femoris of SAMP8 group were significantly higher all groups with significant negative correlation with callus size (R2 = 0.7256; p = 0.0004). Mechanical properties (week 4) and callus remodeling (week 6) were inferior in SAMP8 versus SAMR1 and were significantly enhanced by LMHFV. Alkaline Phosphatase (ALP) and Runx2 expression of MC3T3-E1 was lower in aged myofiber compared with young, but upregulated by LMHFV or myostatin inhibition; also confirmed with C2C12. LMHFV enhanced early callus formation, microarchitecture, callus remodeling and mechanical properties of fracture healing in both SAMP8 and SAMR1; however, more effective in non-sarcopenic SAMR1 mice. Impaired fracture healing in sarcopenic SAMP8 mice is attributed by elevated myostatin expression in callus and muscle, which correlated negatively with callus formation. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 38:277-287, 2020.
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Affiliation(s)
- Ning Zhang
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, 5/F Lui Che Woo Clinical Sciences Building, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, People's Republic of China
| | - Yu Ning Chim
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, 5/F Lui Che Woo Clinical Sciences Building, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, People's Republic of China
| | - Jinyu Wang
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, 5/F Lui Che Woo Clinical Sciences Building, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, People's Republic of China
| | - Ronald Man Yeung Wong
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, 5/F Lui Che Woo Clinical Sciences Building, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, People's Republic of China
| | - Simon K H Chow
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, 5/F Lui Che Woo Clinical Sciences Building, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, People's Republic of China.,The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System Research Base, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, People's Republic of China
| | - Wing-Hoi Cheung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, 5/F Lui Che Woo Clinical Sciences Building, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong, People's Republic of China.,The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System Research Base, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, People's Republic of China
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9
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Zhang T, Han W, Zhao K, Yang W, Lu X, Jia Y, Qin A, Qian Y. Psoralen accelerates bone fracture healing by activating both osteoclasts and osteoblasts. FASEB J 2019; 33:5399-5410. [PMID: 30702934 DOI: 10.1096/fj.201801797r] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Bone fracture healing is a complex, dynamic process that involves various cell types, with osteoclasts and osteoblasts playing indispensable roles. In this study, we found that psoralen, the main active ingredient in Psoralea corylifolia L. fruit extract, enhanced bone fracture healing through activation of osteoclast and osteoblast activity via the ERK signaling pathway. In detail, psoralen promoted receptor activator of nuclear factor-κB ligand-induced osteoclastogenesis, mRNA expression of osteoclast-specific genes, and osteoclastic bone resorption in primary bone marrow-derived macrophages. Meanwhile, psoralen induced osteogenic differentiation by promoting the mRNA expression of the osteoblast differentiation markers alkaline phosphatase, runt-related transcription factor 2, osterix, and osteocalcin. At the molecular level, psoralen preferentially activated ERK1/2 but not JNK or p38 MAPKs. Further experiments revealed that psoralen-induced osteoclast and osteoblast differentiation was abrogated by a specific inhibitor of phosphorylated ERK. In addition, psoralen accelerated bone fracture healing in a rat tibial fracture model, and the numbers of osteoclasts and osteoblasts were increased in psoralen-treated fracture callus. Taken together, our findings indicate that psoralen accelerates bone fracture healing through activation of osteoclasts and osteoblasts via ERK signaling and has potential as a novel drug in the orthopedic clinic for the treatment of bone fractures.-Zhang, T., Han, W., Zhao, K., Yang, W., Lu, X., Jia, Y., Qin, A., Qian, Y. Psoralen accelerates bone fracture healing by activating both osteoclasts and osteoblasts.
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Affiliation(s)
- Tan Zhang
- Department of Orthopaedics, Shaoxing People's Hospital, Zhejiang University School of Medicine, Shaoxing, China
| | - Weiqi Han
- Department of Orthopaedics, Shaoxing People's Hospital, Zhejiang University School of Medicine, Shaoxing, China
| | - Kangxian Zhao
- Department of Orthopaedics, Shaoxing People's Hospital, Zhejiang University School of Medicine, Shaoxing, China
| | - Wanlei Yang
- Department of Orthopaedics, Shaoxing People's Hospital, Zhejiang University School of Medicine, Shaoxing, China
| | - Xuanyuan Lu
- Department of Orthopaedics, Shaoxing People's Hospital, Zhejiang University School of Medicine, Shaoxing, China
| | - Yewei Jia
- Department of Orthopaedics, Shaoxing People's Hospital, Zhejiang University School of Medicine, Shaoxing, China
| | - An Qin
- Department of Orthopedics, Shanghai Key Laboratory of Orthopedic Implants, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yu Qian
- Department of Orthopaedics, Shaoxing People's Hospital, Zhejiang University School of Medicine, Shaoxing, China
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10
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Haffner-Luntzer M, Kovtun A, Lackner I, Mödinger Y, Hacker S, Liedert A, Tuckermann J, Ignatius A. Estrogen receptor α- (ERα), but not ERβ-signaling, is crucially involved in mechanostimulation of bone fracture healing by whole-body vibration. Bone 2018; 110:11-20. [PMID: 29367057 DOI: 10.1016/j.bone.2018.01.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 12/21/2017] [Accepted: 01/14/2018] [Indexed: 02/07/2023]
Abstract
Mechanostimulation by low-magnitude high frequency vibration (LMHFV) has been shown to provoke anabolic effects on the intact skeleton in both mice and humans. However, experimental studies revealed that, during bone fracture healing, the effect of whole-body vibration is profoundly influenced by the estrogen status. LMHFV significantly improved fracture healing in ovariectomized (OVX) mice being estrogen deficient, whereas bone regeneration was significantly reduced in non-OVX, estrogen-competent mice. Furthermore, estrogen receptors α (ERα) and β (ERβ) were differentially expressed in the fracture callus after whole-body vibration, depending on the estrogen status. Based on these data, we hypothesized that ERs may mediate vibration-induced effects on fracture healing. To prove this hypothesis, we investigated the effects of LMHFV on bone healing in mice lacking ERα or ERβ. To study the influence of the ER ligand estrogen, both non-OVX and OVX mice were used. All mice received a femur osteotomy stabilized by an external fixator. Half of the mice were sham-operated or subjected to OVX 4 weeks before osteotomy. Half of each group received LMHFV with 0.3 g and 45 Hz for 20 min per day, 5 days per week. After 21 days, fracture healing was evaluated by biomechanical testing, μCT analysis, histomorphometry and immunohistochemistry. Absence of ERα or ERβ did not affect fracture healing in sham-treated mice. Wildtype (WT) and ERβ-knockout mice similarly displayed impaired bone regeneration after OVX, whereas ERα-knockout mice did not. Confirming previous data, in WT mice, LMHFV negatively affected bone repair in non-OVX mice, whereas OVX-induced compromised healing was significantly improved by vibration. In contrast, vibrated ERα-knockout mice did not display significant differences in fracture healing compared to non-vibrated animals, both in non-OVX and OVX mice. Fracture healing in ERβ-knockout mice was similarly affected by LMHFV as in WT mice. These results suggest that ERα-signaling may be crucial for vibration-induced effects on fracture healing, whereas ERβ-signaling may play a minor role.
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Affiliation(s)
- Melanie Haffner-Luntzer
- Institute of Orthopedic Research and Biomechanics, University Medical Center Ulm, Helmholtzstraße 14, 89081 Ulm, Germany.
| | - Anna Kovtun
- Institute of Orthopedic Research and Biomechanics, University Medical Center Ulm, Helmholtzstraße 14, 89081 Ulm, Germany
| | - Ina Lackner
- Institute of Orthopedic Research and Biomechanics, University Medical Center Ulm, Helmholtzstraße 14, 89081 Ulm, Germany
| | - Yvonne Mödinger
- Institute of Orthopedic Research and Biomechanics, University Medical Center Ulm, Helmholtzstraße 14, 89081 Ulm, Germany
| | - Steffen Hacker
- Institute of Orthopedic Research and Biomechanics, University Medical Center Ulm, Helmholtzstraße 14, 89081 Ulm, Germany
| | - Astrid Liedert
- Institute of Orthopedic Research and Biomechanics, University Medical Center Ulm, Helmholtzstraße 14, 89081 Ulm, Germany
| | - Jan Tuckermann
- Institute of Comparative Molecular Endocrinology, Ulm University, Helmholtzstraße 8, 89081 Ulm, Germany
| | - Anita Ignatius
- Institute of Orthopedic Research and Biomechanics, University Medical Center Ulm, Helmholtzstraße 14, 89081 Ulm, Germany
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11
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Wang F, Han L, Wang X, Li Y, Zhu Y, Wang J, Xue C. Sialoglycoprotein isolated from eggs of Carassius auratus promotes fracture healing in osteoporotic mice. J Food Drug Anal 2018; 26:716-724. [PMID: 29567242 PMCID: PMC9322214 DOI: 10.1016/j.jfda.2017.07.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 07/22/2017] [Accepted: 07/24/2017] [Indexed: 01/04/2023] Open
Abstract
In this study, open tibial fracture surgery was performed on mice with ovariectomy induced osteoporosis to investigate the effect of a treatment with sialoglycoprotein isolated from Carassius auratus eggs (Ca-SGP) on fracture healing. Dynamic histological analysis showed that Ca-SGP promoted the generation of cartilage callus on day 5 post-surgery, then facilitated the transformation of the cartilage callus to bony callus on days 11 and 24 post-surgery, and enhanced the remodeling of bony callus on 35 day post-surgery. Moreover, Ca-SGP significantly decreased the secretion of TNF-α and IL-1β in serum on day 5 post-surgery, thus inhibiting the negative spread of the inflammatory reaction. On day 11 post-surgery, Ca-SGP clearly decreased the serum level and the mRNA expression of Aggrecan but also increased the secretion and the expression of VEGF and MMP13, thus promoting the degradation of the cartilage matrix and vascular invasion. On day 24 post-surgery, Ca-SGP remarkably increased the mRNA expression of osteogenesis markers Col1a and OCN, and increased callus BV/TV and Tb.N, this facilitating the formation of woven bone. On day 35 post-surgery, Ca-SGP enhanced the transformation of woven bone into lamellar bone and improved the callus biomechanical property. In conclusion, Ca-SGP promoted fracture healing in osteoporotic mice by accelerating endochondral ossification.
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12
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Wang F, Wang X, Wang K, Han L, Wang J, Xue C. Phosphorylated peptides from Antarctic Krill (Euphausia superba
) improve fracture healing in mice with ovariectomy induced osteoporosis. J Food Biochem 2017. [DOI: 10.1111/jfbc.12408] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fei Wang
- College of Food Science and Engineering; Ocean University of China; Qingdao Shandong Province 266003 China
| | - Xiaohong Wang
- College of Food Science and Engineering; Ocean University of China; Qingdao Shandong Province 266003 China
| | - Kai Wang
- College of Food Science and Engineering; Ocean University of China; Qingdao Shandong Province 266003 China
| | - Lihua Han
- College of Food Science and Engineering; Ocean University of China; Qingdao Shandong Province 266003 China
| | - Jingfeng Wang
- College of Food Science and Engineering; Ocean University of China; Qingdao Shandong Province 266003 China
| | - Changhu Xue
- College of Food Science and Engineering; Ocean University of China; Qingdao Shandong Province 266003 China
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13
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Zhang N, Chow SKH, Leung KS, Lee HH, Cheung WH. An animal model of co-existing sarcopenia and osteoporotic fracture in senescence accelerated mouse prone 8 (SAMP8). Exp Gerontol 2017; 97:1-8. [PMID: 28711604 DOI: 10.1016/j.exger.2017.07.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 06/26/2017] [Accepted: 07/11/2017] [Indexed: 12/14/2022]
Abstract
Sarcopenia and osteoporotic fracture are common aging-related musculoskeletal problems. Recent evidences report that osteoporotic fracture patients showed high prevalence of sarcopenia; however, current clinical practice basically does not consider sarcopenia in the treatment or rehabilitation of osteoporotic fracture. There is almost no report studying the relationship of the co-existing of sarcopenia and osteoporotic fracture healing. In this study, we validated aged senescence accelerated mouse prone 8 (SAMP8) and senescence accelerated mouse resistant 1 (SAMR1) as animal models of senile osteoporosis with/without sarcopenia. Bone mineral density (BMD) at the 5th lumbar and muscle testing of the two animal strains were measured to confirm the status of osteoporosis and sarcopenia, respectively. Closed fracture was created on the right femur of 8-month-old animals. Radiographs were taken weekly post-fracture. MicroCT and histology of the fractured femur were performed at week 2, 4 and 6 post-fracture, while mechanical test of both femora at week 4 and 6 post-fracture. Results showed that the callus of SAMR1 was significantly larger at week 2 but smaller at week 6 post-fracture than SAMP8. Mechanical properties were significantly better at week 4 post-fracture in SAMR1 than SAMP8, indicating osteoporotic fracture healing was delayed in sarcopenic SAMP8. This study validated an animal model of co-existing sarcopenia and osteoporotic fracture, where a delayed fracture healing might be resulted in the presence of sarcopenia.
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Affiliation(s)
- Ning Zhang
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Simon Kwoon Ho Chow
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong Special Administrative Region; The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, People's Republic of China
| | - Kwok Sui Leung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Ho Hin Lee
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong Special Administrative Region
| | - Wing Hoi Cheung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong Special Administrative Region; The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, People's Republic of China.
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14
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Zhan Q, Gui X, Wang F, Yu P, Zhao M, Wang J, Xue C. Sialoglycoprotein isolated from the eggs of Gadus morhua enhances fracture healing in osteoporotic mice. Food Funct 2017; 8:1094-1104. [PMID: 28164198 DOI: 10.1039/c6fo01346e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Osteoporosis is a common disease in the elderly, which is related to fracture healing delay. In this study, the effects of treatment with sialoglycoprotein isolated from the eggs of Gadus morhua (Gm-SGP) on tibial fracture healing in ovariectomized (OVX) osteoporotic female C57BL/6J mice for 56 days post-fracture were investigated. The result showed that Gm-SGP treatment significantly increased serum angiogenic factors and bone formation markers on day 5 and 11 post-fracture when compared with the OVX group. In addition, histological results in the Gm-SGP group showed a stronger endochondral ossification, a stronger bony consolidation and a stronger bony callus remodeling capability on day 11, 24 and 35 post-fracture, respectively, in comparison with the OVX group. Meanwhile, micro-computerized tomography revealed that the Gm-SGP group had stronger bony callus remodeling capability as evidenced by higher BV/TV and Tb.N but lower Tb.Sp and shorter lengths of callus maximum cross section than the OVX group on day 24 post-fracture. Besides, the tibial callus bending stiffness was significantly enhanced in the Gm-SGP group as compared with the OVX group on day 56 post-fracture. Moreover, gene expression suggested that Gm-SGP promoted vascular invasion and endochondral ossification on day 11 post-fracture as well as bone formation on day 11 and 24 post-fracture via up-regulating the expression of angiogenesis factors (including VEGF, PDGF and Ang1), entochondrostosis factors (including Col2a1, Aggrecan, Col10a1 and MMP-13) and osteogenesis markers (including Col1a1, BMP-2 and OCN). This research suggests that Gm-SGP significantly improve fracture healing which is delayed by OVX-induced osteoporosis. The present study may contribute to providing important implications for the utilization of Gm-SGP from fish eggs as a functional food to enhance fracture healing.
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Affiliation(s)
- Qiping Zhan
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China.
| | - Xiong Gui
- School of Basic Medicine, Faculty of Medicine, Guangxi University of Science and Technology, Liuzhou, China
| | - Fei Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China.
| | - Peng Yu
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China.
| | - Meihui Zhao
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China.
| | - Jingfeng Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China.
| | - Changhu Xue
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China.
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15
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Zhang Z, Leung WN, Li G, Lai YM, Chan CW. Osthole Promotes Endochondral Ossification and Accelerates Fracture Healing in Mice. Calcif Tissue Int 2016; 99:649-660. [PMID: 27538772 PMCID: PMC5097785 DOI: 10.1007/s00223-016-0189-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 08/10/2016] [Indexed: 12/31/2022]
Abstract
Osthole has been found to restore bone mass in preclinical osteoporotic models. In the present study, we investigated the effects of osthole on bone fracture repair in mice. Adult C57BL/6 mice were subjected to transverse femoral fractures and administrated orally with 20 mg/kg osthole and vehicle solvent daily from week 1 post-operation. Fracture callus were analyzed by plain radiography, micro-computed tomography, histology, molecular imaging and immunohistochemistry and tartrate-resistant acid phosphatase staining. Results demonstrated that osthole treatment enhanced removal of cartilage and bony union during reparative stage without significant interfering on remodeling process. In vivo molecular imaging showed bone formation rate of the treatment group was almost twofold of control group at week 2 post-operation. Osthole augmented the expression of alkaline phosphatase and collagen type X in hypertrophic chondrocytes as well as expression of bone morphogenetic protein-2, osteocalcin and alkaline phosphatase in osteoblastic cells, indicating it promoted mineralization of hypertrophic cartilage and woven bone growth simultaneously during endochondral healing. In summary, osthole promotes endochondral ossification via upregulation of maturation osteogenic marker genes in chondrocytes and subsequently accelerates fracture repair and bony fusion.
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Affiliation(s)
- Zhongrong Zhang
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Wing Nang Leung
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Gang Li
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Yau Ming Lai
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Chun Wai Chan
- School of Chinese Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China.
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16
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Chow SKH, Leung KS, Qin J, Guo A, Sun M, Qin L, Cheung WH. Mechanical stimulation enhanced estrogen receptor expression and callus formation in diaphyseal long bone fracture healing in ovariectomy-induced osteoporotic rats. Osteoporos Int 2016; 27:2989-3000. [PMID: 27155884 DOI: 10.1007/s00198-016-3619-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 04/27/2016] [Indexed: 12/28/2022]
Abstract
UNLABELLED Estrogen receptor (ER) in ovariectomy-induced osteoporotic fracture was reported to exhibit delayed expression. Mechanical stimulation enhanced ER-α expression in osteoporotic fracture callus at the tissue level. ER was also found to be required for the effectiveness of vibrational mechanical stimulation treatment in osteoporotic fracture healing. INTRODUCTION Estrogen receptor(ER) is involved in mechanical signal transduction in bone metabolism. Its expression was reported to be delayed in osteoporotic fracture healing. The purpose of this study was to investigate the roles played by ER during osteoporotic fracture healing enhanced with mechanical stimulation. METHODS Ovariectomy-induced osteoporotic SD rats that received closed femoral fractures were divided into five groups, (i) SHAM, (ii) SHAM-VT, (iii) OVX, (iv) OVX-VT, and (v) OVX-VT-ICI, where VT stands for whole-body vibration treatment and ICI for ER antagonization by ICI 182,780. Callus formation and gene expression were assessed at 2, 4, and 8 weeks postfracture. In vitro osteoblastic differentiation, mineralization, and ER-α expression were assessed. RESULTS The delayed ER expression was found to be enhanced by vibration treatment. Callus formation enhancement was shown by callus morphometry and micro-CT analysis. Enhancement effects by vibration were partially abolished when ER was modulated by ICI 182,780, in terms of callus formation capacity at 2-4 weeks and ER gene and protein expression at all time points. In vitro, ER expression in osteoblasts was not enhanced by VT treatment, but osteoblastic differentiation and mineralization were enhanced under estrogen-deprived condition. When osteoblastic cells were modulated by ICI 182,780, enhancement effects of VT were eliminated. CONCLUSIONS Vibration was able to enhance ER expression in ovariectomy-induced osteoporotic fracture healing. ER was essential in mechanical signal transduction and enhancement in callus formation effects during osteoporotic fracture healing enhanced by vibration. The enhancement of ER-α expression by mechanical stimulation was not likely to be related to the increased expression in osteoblastic cells but rather to the systemic enhancement in recruitment of ER-expressing progenitor cells through increased blood flow and neo-angiogenesis. This finding might explain the observed difference in mechanical sensitivity of osteoporotic fracture to mechanical stimulation.
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Affiliation(s)
- S K H Chow
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
- The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, The People's Republic of China
| | - K S Leung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
- Translational Medicine Research and Development Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, The People's Republic of China
| | - J Qin
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
| | - A Guo
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
| | - M Sun
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
| | - L Qin
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China
- The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, The People's Republic of China
- Translational Medicine Research and Development Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, The People's Republic of China
| | - W H Cheung
- Musculoskeletal Research Laboratory, Department of Orthopaedics and Traumatology, Hong Kong Special Administrative Region, The Chinese University of Hong Kong, Hong Kong, The People's Republic of China.
- The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, The People's Republic of China.
- Translational Medicine Research and Development Center, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, The People's Republic of China.
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17
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Bioinformatics and Microarray Analysis of miRNAs in Aged Female Mice Model Implied New Molecular Mechanisms for Impaired Fracture Healing. Int J Mol Sci 2016; 17:ijms17081260. [PMID: 27527150 PMCID: PMC5000658 DOI: 10.3390/ijms17081260] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 07/24/2016] [Accepted: 07/29/2016] [Indexed: 12/31/2022] Open
Abstract
Impaired fracture healing in aged females is still a challenge in clinics. MicroRNAs (miRNAs) play important roles in fracture healing. This study aims to identify the miRNAs that potentially contribute to the impaired fracture healing in aged females. Transverse femoral shaft fractures were created in adult and aged female mice. At post-fracture 0-, 2- and 4-week, the fracture sites were scanned by micro computed tomography to confirm that the fracture healing was impaired in aged female mice and the fracture calluses were collected for miRNA microarray analysis. A total of 53 significantly differentially expressed miRNAs and 5438 miRNA-target gene interactions involved in bone fracture healing were identified. A novel scoring system was designed to analyze the miRNA contribution to impaired fracture healing (RCIFH). Using this method, 11 novel miRNAs were identified to impair fracture healing at 2- or 4-week post-fracture. Thereafter, function analysis of target genes was performed for miRNAs with high RCIFH values. The results showed that high RCIFH miRNAs in aged female mice might impair fracture healing not only by down-regulating angiogenesis-, chondrogenesis-, and osteogenesis-related pathways, but also by up-regulating osteoclastogenesis-related pathway, which implied the essential roles of these high RCIFH miRNAs in impaired fracture healing in aged females, and might promote the discovery of novel therapeutic strategies.
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18
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Lee WY, Li N, Lin S, Wang B, Lan HY, Li G. miRNA-29b improves bone healing in mouse fracture model. Mol Cell Endocrinol 2016; 430:97-107. [PMID: 27113026 DOI: 10.1016/j.mce.2016.04.014] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 03/30/2016] [Accepted: 04/21/2016] [Indexed: 12/15/2022]
Abstract
A number of miRNAs regulates bone remodeling and their levels in circulation were associated with bone fracture, however no miRNAs have yet been shown to improve fracture healing directly. This study aimed to investigate the effect of miR-29b-3p on mice femoral fracture healing through site-specific delivery with microbubble-ultrasound system. miR-29b-3p promoted osteogenesis of mouse bone marrow-derived mesenchymal stem cells as indicated with quantitative real-time polymerase chain reaction (qPCR) and Alizarin red S staining. Animal study showed that single injection of miR-29b-3p at week 2 post fracture improved healing outcome as indicated by significant decrease of callus width and area with radiographic analysis without causing significant weight loss. Static bone histomorphometry analysis showed that miR-29b-3p increased bone volume fraction (BV/TV), and micro-computed tomography (micro-CT) measurement showed increased BV/TV of high density bone and bone mineral density (BMD) of the callus. 3 point bending mechanical test showed improved relative stiffness. However, repeated injection of miR-29b-3p at weeks 2 and 3 did not result in additive therapeutic outcome, and caused increased total tissue volume and reduced BMD of the callus. This is the first report showing significant therapeutic effect of miR-29b-3p on femoral fracture healing through site-specific delivery with microbubble-ultrasound system. Further studies are warranted to investigate the underlying mechanisms and to refine the treatment protocol.
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Affiliation(s)
- Wayne Y Lee
- Department of Orthopaedics & Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China; Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China; SMART Program, Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China.
| | - Nan Li
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Sien Lin
- Department of Orthopaedics & Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China; Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China; SMART Program, Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Bin Wang
- Department of Orthopaedics & Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China; Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China; SMART Program, Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Hui Y Lan
- Department of Medicine and Therapeutics, Faculty of Medicine, Li Ka Shing Institute of Health Sciences, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Gang Li
- Department of Orthopaedics & Traumatology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China; Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China; SMART Program, Lui Che Woo Institute of Innovative Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
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19
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Liu Y, Rui Y, Cheng TY, Huang S, Xu L, Meng F, Lee WYW, Zhang T, Li N, Li C, Ke H, Li G. Effects of Sclerostin Antibody on the Healing of Femoral Fractures in Ovariectomised Rats. Calcif Tissue Int 2016; 98:263-74. [PMID: 26603303 DOI: 10.1007/s00223-015-0085-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 11/10/2015] [Indexed: 12/16/2022]
Abstract
The inhibition of sclerostin by the systemic administration of a monoclonal antibody (Scl-Ab) significantly increased bone mass and strength in fractured bones in animal models and non-fractured bones in ovariectomised (OVX) rats. In this study, the effects of Scl-Ab on healing were examined in a closed fracture model in OVX rats. Sixty Sprague-Dawley rats underwent an ovariectomy or a sham operation at 4 months of age, and a closed fracture of the right femur was performed 3 months later. Subcutaneous injections with Scl-Ab (25 mg/kg) or saline were then administered on day 1 after the fracture and twice a week for 8 weeks (n = 20 per group), at which time the fractured femurs were harvested for micro-computed tomography analysis, four-point bending mechanical testing and histomorphometric analysis to examine bone mass, bone strength and dynamic bone formation at the fracture site. The angiogenesis at the fracture site was also examined. Bone marrow stem cells were also isolated from the fractured bone to perform a colony-forming unit (CFU) assay and an alkaline phosphatase-positive (ALP(+)) CFU assay. OVX rats treated with Scl-Ab for 8 weeks had significantly increased bone mineral density and relative bone volume compared with OVX rats treated with saline. Similarly, maximum loading, energy to maximum load and stiffness in Scl-Ab-treated OVX rats were significantly higher than those in saline controls. The mineral apposition rate (MAR), mineralising surface (MS/BS) and bone formation rate (BFR/BS) were also significantly increased in Scl-Ab-treated group compared with the saline-treated group in OVX rats. Furthermore, the Scl-Ab-treated group had more CFUs and ALP(+) CFUs than the saline-treated group in OVX rats. No significant difference in angiogenesis at the fracture site was found between the groups. Our study demonstrated that Scl-Ab helped to increase bone mass, bone strength and bone formation at the fracture site in a closed femoral fracture model in OVX rats. Bone marrow stem cells in OVX rats injected with Scl-Ab also had increased CFUs and ALP(+) CFUs.
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Affiliation(s)
- Yang Liu
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Yunfeng Rui
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Tin Yan Cheng
- Key Laboratory for Regenerative Medicine, Ministry of Education, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Shuo Huang
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Liangliang Xu
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Fanbiao Meng
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Wayne Yuk Wai Lee
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Ting Zhang
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Nan Li
- Key Laboratory for Regenerative Medicine, Ministry of Education, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Chaoyang Li
- Department of Metabolic Disorders, Amgen Inc., Thousand Oaks, California, USA
| | - Huazhu Ke
- Department of Metabolic Disorders, Amgen Inc., Thousand Oaks, California, USA
| | - Gang Li
- Department of Orthopaedics and Traumatology, Faculty of Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China.
- Stem Cells and Regenerative Medicine Laboratory, Lui Che Woo Institute of Innovative Medicine, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China.
- Key Laboratory for Regenerative Medicine, Ministry of Education, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China.
- The CUHK-ACC Space Medicine Centre on Health Maintenance of Musculoskeletal System, The Chinese University of Hong Kong Shenzhen Research Institute, Shenzhen, China.
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Xu L, Huang S, Hou Y, Liu Y, Ni M, Meng F, Wang K, Rui Y, Jiang X, Li G. Sox11‐modified mesenchymal stem cells (MSCs) accelerate bone fracture healing: Sox11 regulates differentiation and migration of MSCs. FASEB J 2015; 29:1143-1152. [DOI: 10.1096/fj.14-254169] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Affiliation(s)
- Liangliang Xu
- Department of Orthopaedics & TraumatologySchool of Biomedical Sciences and Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongPrince of Wales HospitalShatinHong KongPeople's Republic of China
- Stem Cell and Regeneration ThemeSchool of Biomedical Sciences and Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongPrince of Wales HospitalShatinHong KongPeople's Republic of China
| | - Shuo Huang
- Department of Orthopaedics & TraumatologySchool of Biomedical Sciences and Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongPrince of Wales HospitalShatinHong KongPeople's Republic of China
| | - Yonghui Hou
- Stem Cell and Regeneration ThemeSchool of Biomedical Sciences and Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongPrince of Wales HospitalShatinHong KongPeople's Republic of China
| | - Yang Liu
- Department of Orthopaedics & TraumatologySchool of Biomedical Sciences and Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongPrince of Wales HospitalShatinHong KongPeople's Republic of China
| | - Ming Ni
- Department of Orthopaedics & TraumatologySchool of Biomedical Sciences and Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongPrince of Wales HospitalShatinHong KongPeople's Republic of China
| | - Fanbiao Meng
- Department of Orthopaedics & TraumatologySchool of Biomedical Sciences and Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongPrince of Wales HospitalShatinHong KongPeople's Republic of China
| | - Kuixing Wang
- Department of Orthopaedics & TraumatologySchool of Biomedical Sciences and Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongPrince of Wales HospitalShatinHong KongPeople's Republic of China
| | - Yunfeng Rui
- Department of Orthopaedics & TraumatologySchool of Biomedical Sciences and Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongPrince of Wales HospitalShatinHong KongPeople's Republic of China
| | - Xiaohua Jiang
- Epithelial Cell Biology Research CenterThe Chinese University of Hong KongShatinHong KongPeople's Republic of China
- MOE Key Laboratory of Regenerative MedicineSchool of Biomedical SciencesThe Chinese University of Hong KongShatinHong KongPeople's Republic of China
- CUHK‐ACC Space Medicine Centre on Health Maintenance of Musculoskeletal SystemShenzhen Research InstituteThe Chinese University of Hong KongShenzhenPeople's Republic of China
| | - Gang Li
- Department of Orthopaedics & TraumatologySchool of Biomedical Sciences and Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongPrince of Wales HospitalShatinHong KongPeople's Republic of China
- Epithelial Cell Biology Research CenterThe Chinese University of Hong KongShatinHong KongPeople's Republic of China
- MOE Key Laboratory of Regenerative MedicineSchool of Biomedical SciencesThe Chinese University of Hong KongShatinHong KongPeople's Republic of China
- CUHK‐ACC Space Medicine Centre on Health Maintenance of Musculoskeletal SystemShenzhen Research InstituteThe Chinese University of Hong KongShenzhenPeople's Republic of China
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Vanderschueren D, Laurent MR, Claessens F, Gielen E, Lagerquist MK, Vandenput L, Börjesson AE, Ohlsson C. Sex steroid actions in male bone. Endocr Rev 2014; 35:906-60. [PMID: 25202834 PMCID: PMC4234776 DOI: 10.1210/er.2014-1024] [Citation(s) in RCA: 184] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Sex steroids are chief regulators of gender differences in the skeleton, and male gender is one of the strongest protective factors against osteoporotic fractures. This advantage in bone strength relies mainly on greater cortical bone expansion during pubertal peak bone mass acquisition and superior skeletal maintenance during aging. During both these phases, estrogens acting via estrogen receptor-α in osteoblast lineage cells are crucial for male cortical and trabecular bone, as evident from conditional genetic mouse models, epidemiological studies, rare genetic conditions, genome-wide meta-analyses, and recent interventional trials. Genetic mouse models have also demonstrated a direct role for androgens independent of aromatization on trabecular bone via the androgen receptor in osteoblasts and osteocytes, although the target cell for their key effects on periosteal bone formation remains elusive. Low serum estradiol predicts incident fractures, but the highest risk occurs in men with additionally low T and high SHBG. Still, the possible clinical utility of serum sex steroids for fracture prediction is unknown. It is likely that sex steroid actions on male bone metabolism rely also on extraskeletal mechanisms and cross talk with other signaling pathways. We propose that estrogens influence fracture risk in aging men via direct effects on bone, whereas androgens exert an additional antifracture effect mainly via extraskeletal parameters such as muscle mass and propensity to fall. Given the demographic trends of increased longevity and consequent rise of osteoporosis, an increased understanding of how sex steroids influence male bone health remains a high research priority.
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Affiliation(s)
- Dirk Vanderschueren
- Clinical and Experimental Endocrinology (D.V.) and Gerontology and Geriatrics (M.R.L., E.G.), Department of Clinical and Experimental Medicine; Laboratory of Molecular Endocrinology, Department of Cellular and Molecular Medicine (M.R.L., F.C.); and Centre for Metabolic Bone Diseases (D.V., M.R.L., E.G.), KU Leuven, B-3000 Leuven, Belgium; and Center for Bone and Arthritis Research (M.K.L., L.V., A.E.B., C.O.), Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden
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22
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Wehrle E, Liedert A, Heilmann A, Wehner T, Bindl R, Fischer L, Haffner-Luntzer M, Jakob F, Schinke T, Amling M, Ignatius A. The impact of low-magnitude high-frequency vibration on fracture healing is profoundly influenced by the oestrogen status in mice. Dis Model Mech 2014; 8:93-104. [PMID: 25381012 PMCID: PMC4283653 DOI: 10.1242/dmm.018622] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Fracture healing is impaired in aged and osteoporotic individuals. Because adequate mechanical stimuli are able to increase bone formation, one therapeutical approach to treat poorly healing fractures could be the application of whole-body vibration, including low-magnitude high-frequency vibration (LMHFV). We investigated the effects of LMHFV on fracture healing in aged osteoporotic mice. Female C57BL/6NCrl mice (n=96) were either ovariectomised (OVX) or sham operated (non-OVX) at age 41 weeks. When aged to 49 weeks, all mice received a femur osteotomy that was stabilised using an external fixator. The mice received whole-body vibrations (20 minutes/day) with 0.3 G: peak-to-peak acceleration and a frequency of 45 Hz. After 10 and 21 days, the osteotomised femurs and intact bones (contra-lateral femurs, lumbar spine) were evaluated using bending-testing, micro-computed tomography (μCT), histology and gene expression analyses. LMHFV disturbed fracture healing in aged non-OVX mice, with significantly reduced flexural rigidity (-81%) and bone formation (-80%) in the callus. Gene expression analyses demonstrated increased oestrogen receptor β (ERβ, encoded by Esr2) and Sost expression in the callus of the vibrated animals, but decreased β-catenin, suggesting that ERβ might mediate these negative effects through inhibition of osteoanabolic Wnt/β-catenin signalling. In contrast, in OVX mice, LMHFV significantly improved callus properties, with increased flexural rigidity (+1398%) and bone formation (+637%), which could be abolished by subcutaneous oestrogen application (0.025 mg oestrogen administered in a 90-day-release pellet). On a molecular level, we found an upregulation of ERα in the callus of the vibrated OVX mice, whereas ERβ was unaffected, indicating that ERα might mediate the osteoanabolic response. Our results indicate a major role for oestrogen in the mechanostimulation of fracture healing and imply that LMHFV might only be safe and effective in confined target populations.
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Affiliation(s)
- Esther Wehrle
- Institute of Orthopedic Research and Biomechanics, Center of Musculoskeletal Research, University of Ulm, 89081 Ulm, Germany
| | - Astrid Liedert
- Institute of Orthopedic Research and Biomechanics, Center of Musculoskeletal Research, University of Ulm, 89081 Ulm, Germany
| | - Aline Heilmann
- Institute of Orthopedic Research and Biomechanics, Center of Musculoskeletal Research, University of Ulm, 89081 Ulm, Germany
| | - Tim Wehner
- Institute of Orthopedic Research and Biomechanics, Center of Musculoskeletal Research, University of Ulm, 89081 Ulm, Germany
| | - Ronny Bindl
- Institute of Orthopedic Research and Biomechanics, Center of Musculoskeletal Research, University of Ulm, 89081 Ulm, Germany
| | - Lena Fischer
- Institute of Orthopedic Research and Biomechanics, Center of Musculoskeletal Research, University of Ulm, 89081 Ulm, Germany
| | - Melanie Haffner-Luntzer
- Institute of Orthopedic Research and Biomechanics, Center of Musculoskeletal Research, University of Ulm, 89081 Ulm, Germany
| | - Franz Jakob
- Orthopedic Center for Musculoskeletal Research, Orthopedic Department, University of Würzburg, 97074 Würzburg, Germany
| | - Thorsten Schinke
- Institute of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Michael Amling
- Institute of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Anita Ignatius
- Institute of Orthopedic Research and Biomechanics, Center of Musculoskeletal Research, University of Ulm, 89081 Ulm, Germany.
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Callus formation is related to the expression ratios of estrogen receptors-alpha and -beta in ovariectomy-induced osteoporotic fracture healing. Arch Orthop Trauma Surg 2014; 134:1405-16. [PMID: 25085540 DOI: 10.1007/s00402-014-2070-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Indexed: 02/09/2023]
Abstract
INTRODUCTION This study characterizes ovariectomized (OVX)-induced osteoporotic fracture healing with focus on estrogen receptors (ERs). Callus formation plays a critical role in fracture healing, and ERs are well-known mechanosensors in osteogenic pathways. It was hypothesized that callus formation was related to and partially determined by the difference in expression patterns of ERs in both normal and OVX-induced osteoporotic fractures. METHODS Closed femoral fracture in SHAM and ovariectomized rats were used in this study. Weekly callus width (CW) and area (CA), endpoint mechanical properties, gene expressions of Col-1, BMP-2, ER-α, ER-β and ER-α:ER-β ratios (ER-ratios), and correlations were assessed at 2, 4 and 8 weeks post-fracture. RESULTS CW and CA results confirmed that OVX-induced osteoporotic fracture was delayed at 2-4 weeks with impaired endpoint mechanical properties. Gene expressions of ER-α and ER-β were higher in the SHAM group at week 2 (p < 0.05) and later lowered at week 8; whereas the OVX group showed an opposing trend. Moderate correlation existed between ER-α and BMP-2 (0.545, p = 0.003), and ER-ratio and BMP-2 (0.601, p = 0.001), and BMP-2 to CW and CA (r = 0.709, p = 0.000 and r = 0.588, p = 0.001, respectively). ER-α and ER-β proteins expressions were confirmed by immunohistochemistry at the fracture callus in reparative progenitor cells, osteoblasts- and osteoclasts-like cells. CONCLUSION We conclude that the delayed healing rate and impaired callus quality in OVX-induced osteoporotic fracture is related to the delayed expression of ERs. A high ER-α:ER-β ratio favors callus formation.
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Suen PK, He YX, Chow DHK, Huang L, Li C, Ke HZ, Ominsky MS, Qin L. Sclerostin monoclonal antibody enhanced bone fracture healing in an open osteotomy model in rats. J Orthop Res 2014; 32:997-1005. [PMID: 24782158 DOI: 10.1002/jor.22636] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 03/04/2014] [Indexed: 02/04/2023]
Abstract
Sclerostin is a negative regulator of bone formation. Sclerostin monoclonal antibody (Scl-Ab) treatment promoted bone healing in various animal models. To further evaluate the healing efficiency of Scl-Ab in osteotomy healing, we investigated the time course effects of systemic administration of Scl-Ab on fracture repair in rat femoral osteotomy model. A total of 120 six-month-old male SD rats were subjected to transverse osteotomy at the right femur mid-shaft. Rats were treated with vehicle or Scl-Ab treatment for 3, 6, or 9 weeks. Fracture healing was evaluated by radiography, micro-CT, micro-CT based angiography, 4-point bending mechanical test and histological assessment. Scl-Ab treatment resulted in significantly higher total mineralized callus volume fraction, BMD and enhanced neovascularization. Histologically, Scl-Ab treatment resulted in a significant reduction in fracture callus cartilage at week 6 and increase in bone volume at week 9, associated with a greater proportion of newly formed bone area at week 6 and 9 by fluorescence microscopy. Mechanical testing showed significantly higher ultimate load in Scl-Ab treatment group at week 6 and 9. This study has demonstrated that Scl-Ab treatment enhanced bone healing in a rat femoral osteotomy model, as reflected in increased bone formation, bone mass and bone strength.
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Affiliation(s)
- Pui Kit Suen
- Department of Orthopaedics and Traumatology, Lui Che Woo Institute of Innovation Medicine, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
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Spiro AS, Khadem S, Jeschke A, Marshall RP, Pogoda P, Ignatius A, Amling M, Beil FT. The SERM raloxifene improves diaphyseal fracture healing in mice. J Bone Miner Metab 2013; 31:629-36. [PMID: 23546819 DOI: 10.1007/s00774-013-0461-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Accepted: 03/14/2013] [Indexed: 11/26/2022]
Abstract
Although several studies reported that raloxifene treatment improves postmenopausal osteoporotic bone structure and reduces fracture risk, only a few animal and no human studies have examined its effects on the fracture healing process. Thus the aim of the present study was to determine, whether systemic application of the selective estrogen receptor modulator raloxifene promotes fracture healing compared to untreated control-, estrogen-deficient-, as well as estrogen-treated mice using a standardized femoral osteotomy model (n = 60 mice). Ten days after surgery, contact radiography and undecalcified histomorphometric analysis revealed that raloxifene administration significantly improved the early stage of fracture healing compared to all other groups. At day 20, raloxifene and estrogen treatment led to a significant increase in callus mineralization and trabecular thickness compared to control mice. μCT analyses revealed no evidence of complete bony bridging of the fracture site in any control-, nor estrogen-deficient mouse after 20 days, while all femoral fractures in the raloxifene and estrogen group already healed adequately at this time. These data indicate that raloxifene treatment significantly improves all phases of fracture healing at least in mice. Therefore, raloxifene could be a possible pharmaceutical to enhance fracture healing in women, without the known side effects of estrogen.
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Affiliation(s)
- Alexander S Spiro
- Department of Trauma, Hand, and Reconstructive Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Kamiya Y, Chen J, Xu M, Utreja A, Choi T, Drissi H, Wadhwa S. Increased mandibular condylar growth in mice with estrogen receptor beta deficiency. J Bone Miner Res 2013; 28. [PMID: 23197372 PMCID: PMC3601565 DOI: 10.1002/jbmr.1835] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Temporomandibular joint (TMJ) disorders predominantly afflict women of childbearing age, suggesting a role for female hormones in the disease process. In long bones, estrogen acting via estrogen receptor beta (ERβ) inhibits axial skeletal growth in female mice. However, the role of ERβ in the mandibular condyle is largely unknown. We hypothesize that female ERβ-deficient mice will have increased mandibular condylar growth compared to wild-type (WT) female mice. This study examined female 7-day-old, 49-day-old, and 120-day-old WT and ERβ knockout (KO) mice. There was a significant increase in mandibular condylar cartilage thickness as a result of an increased number of cells, in the 49-day-old and 120-day-old female ERβ KO compared with WT controls. Analysis in 49-day-old female ERβ KO mice revealed a significant increase in collagen type X, parathyroid hormone-related protein (Pthrp), and osteoprotegerin gene expression and a significant decrease in receptor activator for nuclear factor κ B ligand (Rankl) and Indian hedgehog (Ihh) gene expression, compared with WT controls. Subchondral bone analysis revealed a significant increase in total condylar volume and a decrease in the number of osteoclasts in the 49-day-old ERβ KO compared with WT female mice. There was no difference in cell proliferation in condylar cartilage between the genotypes. However, there were differences in the expression of proteins that regulate the cell cycle; we found a decrease in the expression of Tieg1 and p57 in the mandibular condylar cartilage from ERβ KO mice compared with WT mice. Taken together, our results suggest that ERβ deficiency increases condylar growth in female mice by inhibiting the turnover of fibrocartilage.
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Affiliation(s)
- Yosuke Kamiya
- Division of Orthodontics, Columbia University College of Dental Medicine, New York, NY 10032, USA
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