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Yi D, Jin H, Lu WW, Zhang C, Xiao G, Tong L, Chen D. Deletion of Axin1 in aggrecan-expressing cells leads to growth plate cartilage defects in adult mice. Genes Dis 2024; 11:101147. [PMID: 38515941 PMCID: PMC10955195 DOI: 10.1016/j.gendis.2023.101147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/01/2023] [Accepted: 09/26/2023] [Indexed: 03/23/2024] Open
Affiliation(s)
- Dan Yi
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
| | - Hongting Jin
- The First College of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - William W. Lu
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
| | - Chunxiang Zhang
- Department of Cardiology, Basic Medicine Innovation Center for Cardiometabolic Diseases of Ministry of Education, Institute of Cardiovascular Research, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Guozhi Xiao
- School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Liping Tong
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
| | - Di Chen
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, China
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2
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Chen H, Wu T, Pan S, Zhang L, Zhao Y, Chen X, Sun Y, Lu WW, Zhou F. Finite element analysis of a new preoperative traction for cervical kyphosis: suspensory traction. Med Biol Eng Comput 2024:10.1007/s11517-024-03113-z. [PMID: 38709337 DOI: 10.1007/s11517-024-03113-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 04/26/2024] [Indexed: 05/07/2024]
Abstract
A finite element model of cervical kyphosis was established to analyze the stress of cervical spine under suspensory traction and to explore the mechanism and effect of it. A patient with typical cervical kyphosis (C2-C5) underwent CT scan imaging, and 3D slicer was used to reconstruct the C2 to T2 vertebral bodies. The reconstructed data was imported into Hypermesh 2020 and Abaqus 2017 for meshing and finite element analysis. The changes of the kyphotic angle and the von Mises stress on the annulus fibrosus of each intervertebral disc and ligaments were analyzed under suspensory traction conditions. With the increase of suspensory traction weight, the overall kyphosis of cervical spine showed a decreasing trend. The correction of kyphosis was mainly contributed by the change of kyphotic segments. The kyphotic angle of C2-C5 was corrected from 45° to 13° finally. In cervical intervertebral discs, the stress was concentrated to anterior and posterior part, except for C4-5. The stress of the anterior longitudinal ligament (ALL) decreased from the rostral to the caudal, and the high level von Mises stress of the kyphotic segments appeared at C2-C3, C3-C4, and C4-C5. The roles of the other ligaments were not obvious. The kyphotic angle was significantly reduced by the suspensory traction. Shear effect due to the high von Mises stress in the anterior and posterior parts of annulus fibrosus and the tension on the anterior longitudinal ligament play a role in the correction of cervical kyphosis.
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Affiliation(s)
- Hongyu Chen
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
| | - Tianchi Wu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, China
| | - Shengfa Pan
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
| | - Li Zhang
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
| | - Yanbin Zhao
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
| | - Xin Chen
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
| | - Yu Sun
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
| | - William W Lu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, Hong Kong SAR, China.
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, China.
| | - Feifei Zhou
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China.
- Engineering Research Center of Bone and Joint Precision Medicine, Beijing, China.
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China.
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Liu J, Huang X, Su H, Yu J, Nie X, Liu K, Qin W, Zhao Y, Su Y, Kuang X, Chen D, Lu WW, Chen Y, Hua Q. Tibial Cortex Transverse Transport Facilitates Severe Diabetic Foot Wound Healing via HIF-1α-Induced Angiogenesis. J Inflamm Res 2024; 17:2681-2696. [PMID: 38707956 PMCID: PMC11070162 DOI: 10.2147/jir.s456590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Accepted: 04/18/2024] [Indexed: 05/07/2024] Open
Abstract
Purpose Management of severe diabetic foot ulcers (DFUs) remains challenging. Tibial cortex transverse transport (TTT) facilitates healing and limb salvage in patients with recalcitrant DFUs. However, the underlying mechanism is largely unknown, necessitating the establishment of an animal model and mechanism exploration. Methods Severe DFUs were induced in rats, then assigned to TTT, sham, or control groups (n=16/group). The TTT group underwent a tibial corticotomy, with 6 days each of medial and lateral transport; the sham group had a corticotomy without transport. Ulcer healing was assessed through Laser Doppler, CT angiography, histology, and immunohistochemistry. Serum HIF-1α, PDGF-BB, SDF-1, and VEGF levels were measured by ELISA. Results The TTT group showed lower percentages of wound area, higher dermis thickness (all p < 0.001 expect for p = 0.001 for TTT vs Sham at day 6) and percentage of collagen content (all p < 0.001) than the other two groups. The TTT group had higher perfusion and vessel volume in the hindlimb (all p < 0.001). The number of CD31+ cells (all p < 0.001) and VEGFR2+ cells (at day 6, TTT vs Control, p = 0.001, TTT vs Sham, p = 0.006; at day 12, TTT vs Control, p = 0.003, TTT vs Sham, p = 0.01) were higher in the TTT group. The activity of HIF-1α, PDGF-BB, and SDF-1 was increased in the TTT group (all p < 0.001 except for SDF-1 at day 12, TTT vs Sham, p = 0.005). The TTT group had higher levels of HIF-1α, PDGF-BB, SDF-1, and VEGF in serum than the other groups (all p < 0.001). Conclusion TTT enhanced neovascularization and perfusion at the hindlimb and accelerated healing of the severe DFUs. The underlying mechanism is related to HIF-1α-induced angiogenesis.
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Affiliation(s)
- Jie Liu
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Xiajie Huang
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Hongjie Su
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Jie Yu
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Xinyu Nie
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Kaibing Liu
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Wencong Qin
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Yongxin Zhao
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Yongfeng Su
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Xiaocong Kuang
- Yulin Campus of Guangxi Medical University, Yulin, Guangxi, People’s Republic of China
| | - Di Chen
- Research Center for Computer-Aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, People’s Republic of China
| | - William W Lu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong
| | - Yan Chen
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Qikai Hua
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
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Chen Y, Zeng D, Wei G, Liao Z, Liang R, Huang X, Lu WW, Chen Y. Pyroptosis in Osteoarthritis: Molecular Mechanisms and Therapeutic Implications. J Inflamm Res 2024; 17:791-803. [PMID: 38348279 PMCID: PMC10860821 DOI: 10.2147/jir.s445573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/20/2024] [Indexed: 02/15/2024] Open
Abstract
Osteoarthritis (OA) is a chronic disease that causes pain and functional impairment by affecting joint tissue. Its global impact is noteworthy, causing significant economic losses and property damage. Despite extensive research, the underlying pathogenesis of OA remain an area of ongoing investigation. It has recently been discovered that the OA progression is significantly influenced by pyroptosis. Pyroptosis is a complex process that involves three pathways culminating in the assembly of Gasdermin-D (GSDMD)-N-terminal (GSDMD-NT) into pores through aggregation on the plasma membrane. The aggregation of GSDMD-NT proteins stimulates the release of inflammatory mediators, such as Interleukin-1β (IL-1β), Interleukin-18 (IL-18), and Matrix Metallopeptidase 13 (MMP13), ultimately leading to cellular lysis. The pyroptosis process in specific cells, including synovial macrophages, fibroblast-like synoviocytes (FLS), chondrocytes, and subchondral osteoblasts, contributs factor to the development of OA. Currently, the specific cells that undergo pyroptosis first are not yet fully understood, and it remains unknown whether pyroptosis in one cell can trigger the same process in other cells. Therefore, targeting pyroptosis could potentially offer a novel treatment approach for OA patients. We present a comprehensive analysis of the molecular mechanisms and key features of pyroptosis. We also outline the current research progress on various aspects, including synovial tissue, articular cartilage, extracellular matrix (ECM), and subchondral bone, with a focus on pyroptosis. The aim is to provide theoretical references for the effective management of OA.
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Affiliation(s)
- Yeping Chen
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Daofu Zeng
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Guizheng Wei
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Zhidong Liao
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co-Constructed by the Province and Ministry, Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Rongyuan Liang
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - Xiajie Huang
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co-Constructed by the Province and Ministry, Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
| | - William W Lu
- Department of Orthopedics and Traumatology, the University of Hong Kong, Hong Kong, People’s Republic of China
| | - Yan Chen
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co-Constructed by the Province and Ministry, Guangxi Medical University, Nanning, Guangxi, People’s Republic of China
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Feng J, Zhang Q, Pu F, Zhu Z, Lu K, Lu WW, Tong L, Yu H, Chen D. Signalling interaction between β-catenin and other signalling molecules during osteoarthritis development. Cell Prolif 2024:e13600. [PMID: 38199244 DOI: 10.1111/cpr.13600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/29/2023] [Accepted: 12/29/2023] [Indexed: 01/12/2024] Open
Abstract
Osteoarthritis (OA) is the most prevalent disorder of synovial joint affecting multiple joints. In the past decade, we have witnessed conceptual switch of OA pathogenesis from a 'wear and tear' disease to a disease affecting entire joint. Extensive studies have been conducted to understand the underlying mechanisms of OA using genetic mouse models and ex vivo joint tissues derived from individuals with OA. These studies revealed that multiple signalling pathways are involved in OA development, including the canonical Wnt/β-catenin signalling and its interaction with other signalling pathways, such as transforming growth factor β (TGF-β), bone morphogenic protein (BMP), Indian Hedgehog (Ihh), nuclear factor κB (NF-κB), fibroblast growth factor (FGF), and Notch. The identification of signalling interaction and underlying mechanisms are currently underway and the specific molecule(s) and key signalling pathway(s) playing a decisive role in OA development need to be evaluated. This review will focus on recent progresses in understanding of the critical role of Wnt/β-catenin signalling in OA pathogenesis and interaction of β-catenin with other pathways, such as TGF-β, BMP, Notch, Ihh, NF-κB, and FGF. Understanding of these novel insights into the interaction of β-catenin with other pathways and its integration into a complex gene regulatory network during OA development will help us identify the key signalling pathway of OA pathogenesis leading to the discovery of novel therapeutic strategies for OA intervention.
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Affiliation(s)
- Jing Feng
- Department of Orthopedics, Traditional Chinese and Western Medicine Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Department of Orthopedics, Wuhan No. 1 Hospital, Wuhan, Hubei, China
| | - Qing Zhang
- Department of Emergency, Renmin Hospital, Wuhan University, Wuhan, Hubei, China
| | - Feifei Pu
- Department of Orthopedics, Traditional Chinese and Western Medicine Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Department of Orthopedics, Wuhan No. 1 Hospital, Wuhan, Hubei, China
| | - Zhenglin Zhu
- Department of Orthopedic Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ke Lu
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Shenzhen, China
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - William W Lu
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Shenzhen, China
| | - Liping Tong
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Huan Yu
- Department of Orthopedics, Traditional Chinese and Western Medicine Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Department of Orthopedics, Wuhan No. 1 Hospital, Wuhan, Hubei, China
| | - Di Chen
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Shenzhen, China
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
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Wei G, Lu K, Umar M, Zhu Z, Lu WW, Speakman JR, Chen Y, Tong L, Chen D. Risk of metabolic abnormalities in osteoarthritis: a new perspective to understand its pathological mechanisms. Bone Res 2023; 11:63. [PMID: 38052778 PMCID: PMC10698167 DOI: 10.1038/s41413-023-00301-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/11/2023] [Accepted: 10/27/2023] [Indexed: 12/07/2023] Open
Abstract
Although aging has traditionally been viewed as the most important risk factor for osteoarthritis (OA), an increasing amount of epidemiological evidence has highlighted the association between metabolic abnormalities and OA, particularly in younger individuals. Metabolic abnormalities, such as obesity and type II diabetes, are strongly linked to OA, and they affect both weight-bearing and non-weight-bearing joints, thus suggesting that the pathogenesis of OA is more complicated than the mechanical stress induced by overweight. This review aims to explore the recent advances in research on the relationship between metabolic abnormalities and OA risk, including the impact of abnormal glucose and lipid metabolism, the potential pathogenesis and targeted therapeutic strategies.
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Affiliation(s)
- Guizheng Wei
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, China
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Ke Lu
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Muhammad Umar
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Zhenglin Zhu
- Department of Orthopedic Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - William W Lu
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - John R Speakman
- Center for Energy Metabolism and Reproduction, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Yan Chen
- Department of Bone and Joint Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, China.
| | - Liping Tong
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
| | - Di Chen
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
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Zeng D, Chen Y, Liao Z, Wei G, Huang X, Liang R, Lu WW, Yi D, Chen Y. Cartilage organoids and osteoarthritis research: a narrative review. Front Bioeng Biotechnol 2023; 11:1278692. [PMID: 38026876 PMCID: PMC10666186 DOI: 10.3389/fbioe.2023.1278692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023] Open
Abstract
Osteoarthritis (OA) is one of the most common degenerative joint diseases, significantly impacting individuals and society. With the acceleration of global aging, the incidence of OA is increasing. The pathogenesis of osteoarthritis is not fully understood, and there is no effective way to alleviate the progression of osteoarthritis. Therefore, it is necessary to develop new disease models and seek new treatments for OA. Cartilage organoids are three-dimensional tissue masses that can simulate organ structure and physiological function and play an important role in disease modeling, drug screening, and regenerative medicine. This review will briefly analyze the research progress of OA, focusing on the construction and current development of cartilage organoids, and then describe the application of cartilage organoids in OA modeling, drug screening, and regeneration and repair of cartilage and bone defects. Finally, some challenges and prospects in the development of cartilaginous organoids are discussed.
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Affiliation(s)
- Daofu Zeng
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co-Constructed by the Province and Ministry, Guangxi Medical University, Nanning, Guangxi, China
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Yeping Chen
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Zhidong Liao
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co-Constructed by the Province and Ministry, Guangxi Medical University, Nanning, Guangxi, China
| | - Guizheng Wei
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Xiajie Huang
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co-Constructed by the Province and Ministry, Guangxi Medical University, Nanning, Guangxi, China
| | - Rongyuan Liang
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - William W. Lu
- Department of Orthopedics and Traumatology, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Dan Yi
- Research Center for Computer-Aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Yan Chen
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co-Constructed by the Province and Ministry, Guangxi Medical University, Nanning, Guangxi, China
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
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8
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Lu K, Wang Q, Hao L, Wei G, Wang T, Lu WW, Xiao G, Tong L, Zhao X, Chen D. miR-204 ameliorates osteoarthritis pain by inhibiting SP1-LRP1 signaling and blocking neuro-cartilage interaction. Bioact Mater 2023; 26:425-436. [PMID: 36969105 PMCID: PMC10033455 DOI: 10.1016/j.bioactmat.2023.03.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 03/14/2023] [Accepted: 03/15/2023] [Indexed: 03/22/2023] Open
Abstract
Osteoarthritis (OA) is a painful degenerative joint disease and is the leading cause of chronic disability among elderly individuals. To improve the quality of life for patients with OA, the primary goal for OA treatment is to relieve the pain. During OA progression, nerve ingrowth was observed in synovial tissue and articular cartilage. These abnormal neonatal nerves act as nociceptors to detect OA pain signals. The molecular mechanisms for transmitting OA pain in the joint tissues to the central nerve system (CNS) is currently unknown. MicroRNA miR-204 has been demonstrated to maintain the homeostasis of joint tissues and have chondro-protective effect on OA pathogenesis. However, the role of miR-204 in OA pain has not been determined. In this study, we investigated interactions between chondrocytes and neural cells and evaluated the effect and mechanism of miR-204 delivered by exosome in the treatment of OA pain in an experimental OA mouse model. Our findings demonstrated that miR-204 could protect OA pain by inhibition of SP1- LDL Receptor Related Protein 1 (LRP1) signaling and blocking neuro-cartilage interaction in the joint. Our studies defined novel molecular targets for the treatment of OA pain.
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Affiliation(s)
- Ke Lu
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Shenzhen, 518055, China
| | - Qingyun Wang
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Shenzhen, 518055, China
| | - Liuzhi Hao
- Research Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Guizheng Wei
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Shenzhen, 518055, China
| | - Tingyu Wang
- Department of Pharmacy, Shanghai Ninth People's Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, 200011, China
| | - William W. Lu
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Shenzhen, 518055, China
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong 999077, China
| | - Guozhi Xiao
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Liping Tong
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Xiaoli Zhao
- Research Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Corresponding author.
| | - Di Chen
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Shenzhen, 518055, China
- Corresponding author. Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Shenzhen, 518055, China.
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Jia S, Yang J, Lau ADS, Chen F, Bu Y, Cai E, Wang H, Chieng HE, Sun T, Zhiyong Z, Ruan C, Lu WW, Chan JCH. Digital light processing-bioprinted poly-NAGA-GelMA-based hydrogel lenticule for precise refractive errors correction. Biofabrication 2023; 15. [PMID: 37019117 DOI: 10.1088/1758-5090/accaab] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 04/05/2023] [Indexed: 04/07/2023]
Abstract
Refractive disorder is the most prevalent cause of visual impairment worldwide. While treatment of refractive errors can bring improvement to quality of life and socio-economic benefits, there is a need for individualization, precision, convenience, and safety with the chosen method. Herein, we propose using pre-designed refractive lenticules based on poly-NAGA-GelMA (PNG) bio-inks photo-initiated by digital light processing (DLP)-bioprinting for correcting refractive errors. DLP-bioprinting allows PNG lenticules to have individualized physical dimensions with precision achievable to 10 micron (μm). Material characteristics of PNG lenticules in tests included optical and biomechanical stability, biomimetical swelling and hydrophilic capability, nutritional and visual functionality, supporting its suitability as stromal implants. Cytocompatibility distinguished by morphology and function of corneal epithelial, stromal, and endothelial cells on PNG lenticules suggested firm adhesion, over 90% viability, phenotypic maintenance instead of excessive keratocyte-myofibroblast transformation. In-vitro immune response analyzed by illumina RNA sequencing in human peripheral blood mononuclear cells indicated that PNG lenticules activated type-2 immunity, facilitating tissue regeneration and suppressing inflammation. In-vivo performance assessed using intrastromal keratoplasty (ISK) models in New Zealand white rabbits illustrated that implantation of PNG lenticules maintained stable optical pathway, induced controlled stromal bio-integration and regeneration, avoided complications such as stromal melt, interface scarring, etc., but exerted no adverse effects on the host. Postoperative follow-up examination on intraocular pressure, corneal sensitivity, and tear production remained unaffected by surgery up to 1-month post-implantation of PNG lenticules. DLP-bioprinted PNG lenticule is a bio-safe and functionally effective stromal implants with customizable physical dimensions, providing potential therapeutic strategies in correction of refractive errors.
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Affiliation(s)
- Shuo Jia
- Ophthalmology, The University of Hong Kong, No. 5 Sassoon Road, HKSAR, Hong Kong, 9990777, HONG KONG
| | - Jirong Yang
- Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, P.R.China, Shenzhen, Guangdong, 518055, CHINA
| | - Aaron Dzi-Shing Lau
- Department of Orthopedic and Traumatology, The University of Hong Kong Li Ka Shing Faculty of Medicine, No. 21 Sassoon Road, Hong Kong, 9990777, HONG KONG
| | - Fushun Chen
- Department of Ophthalmology, The University of Hong Kong Li Ka Shing Faculty of Medicine, No. 21 Sassoon Road, Hong Kong, HONG KONG
| | - Yashan Bu
- Department of Ophthalmology, The University of Hong Kong Li Ka Shing Faculty of Medicine, No. 5 Sassoon Road, Hong Kong, 9990777, HONG KONG
| | - Erlong Cai
- Suzhou Institute of Biomedical Engineering and Technology, No. 88, Keling Road, Hi-Tech City, High-tech Zone, Suzhou, Suzhou, Jiangsu, 215163, CHINA
| | - Huogang Wang
- Department of Ophthalmology, The University of Hong Kong Li Ka Shing Faculty of Medicine, No. 21 Sassoon Road, Hong Kong, 9990777, HONG KONG
| | - Herng-Ee Chieng
- Department of Orthopedic and Traumatology, The University of Hong Kong Li Ka Shing Faculty of Medicine, No. 21 Sassoon Road, Hong Kong, 9990777, HONG KONG
| | - Tianhao Sun
- Department of Orthopedic and Traumatology, The University of Hong Kong-Shenzhen Hospital, 1 Haiyuan 1 Rd, Futian District, Shenzhen, Guangdong Province, China, Shenzhen, 518053, CHINA
| | - Zhou Zhiyong
- Suzhou Institute of Biomedical Engineering and Technology, No. 88, Keling Road, Hi-Tech City, High-tech Zone, Suzhou, Suzhou, 215163, CHINA
| | - Changshun Ruan
- Center for Human Tissue and Organs Degeneration, Institute Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, P.R.China, Shenzhen, 518055, CHINA
| | - William W Lu
- Department of Orthopaedics and Traumatology, The University of Hong Kong Li Ka Shing Faculty of Medicine, L907, Lab block, 21 Sassoon Road, Pokfulam, Hong Kong, HONG KONG
| | - Jonathan Cheuk-Hung Chan
- Department of Ophthalmology, The University of Hong Kong Li Ka Shing Faculty of Medicine, No. 5 Sassoon Road, Hong Kong, 9990777, HONG KONG
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10
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Zhou CB, Lu WW, Zhang YZ, Liu WY, Chen YB, Qian YQ, Zhu LH. [Analysis of non-bacterial respiratory pathogens in children in Ningbo City from 2019 to 2021]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1751-1758. [PMID: 36536562 DOI: 10.3760/cma.j.cn112150-20220121-00080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Objective: To investigate the distribution characteristics of respiratory non-bacterial pathogens in children in Ningbo from 2019 to 2021. Methods: A retrospective analysis was performed on 23 733 children with respiratory tract infection who visited the department of pediatrics of Ningbo Women and Children's Hospital from July 2019 to December 2021. There were 13 509 males (56.92%) and 10 224 females (43.08%), with an age range of 1 day to 18 years old. There were 981 cases in the neonatal group (younger than 1 month old), 5 880 cases in the infant group (1 month to younger than 1 year old), 6 552 cases in the toddler group (1 to younger than 3 years old), 7 638 cases in the preschool group (3 to younger than 7 years old), and 2 682 cases in the school-age group (7 to 18 years old). Thirteen respiratory pathogens were detected by multiple polymerase chain reaction (PCR) based on capillary electrophoresis, and SPSS 23.0 software was used for statistical analysis of the results, the count data were expressed as percentages, and the χ2 test was used for comparison between groups. Results: Of the 23 733 specimens, 13 330 were positive for respiratory pathogens, with a total positive rate of 56.17%. The positive rates of human rhinovirus (HRV) 24.05% (5 707/23 733), human respiratory syncytial virus (HRSV) 10.45% (2 480/2 3733) and mycoplasma pneumoniae (Mp) 7.03% (1 668/23 733) were in the first three. The positive rates of pathogens in the male and female children were 57.47% (7 763/13 509) and 54.45% (5 567/10 224), respectively, and the difference was statistically significant (χ2=21.488, P<0.001). The positive rates in the neonatal group, infant group, toddler group, preschool group, and school-age group were 31.80% (312/981), 54.71% (3 217/5 880), 63.23% (4 143/6 552), 59.83% (4 570/7 638), 40.57% (1 088/2 682), respectively, and the difference among the groups was statistically significant (χ2=681.225, P<0.001). The single infection rate was 47.43% (11 256/23 733), the mixed infection rate of two or more pathogens was 8.74% (2 074/23 733), most of which were mixed infections of two pathogens. HRV, HADV, HCOV, Ch disseminated in the whole year. HRSV, HMPV, Boca, HPIV occurred mostly in fall and winter. The positive rates of FluA, FluB, Mp were at a low level after the corona virus disease 2019 (COVID-19) epidemic (2020 and 2021). The positive rates of FluA, H1N1, H3N2, FluB, HADV, Mp in 2020 were significantly lower than in 2019 (P<0.05). The positive rates of HPIV, HRV, HCOV, Ch in 2020 were significantly higher than in 2019 (P<0.05). The positive rates of FluA, H1N1, H3N2, HPIV, HCOV, Mp, Ch in 2021 were significantly lower than in 2020 (P<0.05). The positive rates of Boca, HMPV, HRSV in 2021 were significantly higher than in 2020 (P<0.05). Conclusion: From 2019 to 2021, the main non-bacterial respiratory pathogens of children in Ningbo City were Mp and HRV, and the detection rates of respiratory pathogens varied among different ages, seasons and genders.
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Affiliation(s)
- C B Zhou
- Department of Clinical Laboratory,Ningbo Women and Children's Hospital,Ningbo 315012, China
| | - W W Lu
- Department of Clinical Laboratory,Ningbo Women and Children's Hospital,Ningbo 315012, China
| | - Y Z Zhang
- Department of Clinical Laboratory,Ningbo Women and Children's Hospital,Ningbo 315012, China
| | - W Y Liu
- Department of Clinical Laboratory,Ningbo Women and Children's Hospital,Ningbo 315012, China
| | - Y B Chen
- Department of Clinical Laboratory,Ningbo Women and Children's Hospital,Ningbo 315012, China
| | - Y Q Qian
- Ningbo Health Gene Technologies Co., Ltd., Ningbo 315040, China
| | - L H Zhu
- Department of Pediatrics,Ningbo Women and Children's Hospital,Ningbo 315012, China
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11
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Niu Z, You Z, Lu WW, Wang Z, Wang C. Preparation and characterisation of tough and porous polyvinyl alcohol/POC membrane for biomedical applications. Biosurface and Biotribology 2022. [DOI: 10.1049/bsb2.12053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Zuoliang Niu
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology Sichuan University Chengdu China
| | - Ziying You
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology Sichuan University Chengdu China
| | - William W. Lu
- Department of Orthopaedics and Traumatology The University of Hong Kong Hong Kong China
| | - Zhenming Wang
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology Sichuan University Chengdu China
| | - Chenglin Wang
- State Key Laboratory of Oral Diseases West China Hospital of Stomatology Sichuan University Chengdu China
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12
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Wu T, Chen H, Sun Y, Xia T, Zhou F, Lu WW. Patient-specific numerical investigation of the correction of cervical kyphotic deformity based on a retrospective clinical case. Front Bioeng Biotechnol 2022; 10:950839. [PMID: 36159686 PMCID: PMC9500315 DOI: 10.3389/fbioe.2022.950839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/12/2022] [Indexed: 11/22/2022] Open
Abstract
Little research has been reported on evaluating the safety of the fixation construct in cervical kyphosis correction. In this study, we proposed a principal-strain criterion to evaluate the safety of the fixation construct and validated the modeling method against a retrospective case of anterior cervical discectomy fusion (ACDF). From C2 to T2 vertebra bodies, fixation instruments were reconstructed and positioned as per postoperative computed tomography (CT) scans. Head weight (HW) and various moments estimated from isometric strength data were imposed onto the C2. The postoperative stability of non-surgical segments, deformations surrounding the screw trajectories, and contact slipping on zygapophysial joints were analyzed. The model was validated against the reality that the patient had a good fusion and deformity correction. The ACDF restricted the range of motions (ROMs) of cervical segments and lent stability to vertebra fusion, no failure was found in the finite element (FE) model of cervical vertebrae. The deformation surrounding the screw trajectories were concentrated to the lateral sides of trajectories, recommending that the shape of the anterior cervical plate conforming to the curvature of the vertebra and screws fully inserted into vertebrae reduced the deformation concentration around the screw trajectories.
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Affiliation(s)
- Tianchi Wu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, China
| | - Hongyu Chen
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
| | - Yu Sun
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
| | - Tian Xia
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
| | - Feifei Zhou
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, Beijing, China
- Beijing Key Laboratory of Spinal Disease Research, Beijing, China
- *Correspondence: Feifei Zhou,
| | - William W. Lu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, China
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13
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Ma C, Zou D, Qi H, Li C, Zhang C, Yang K, Zhu F, Li W, Lu WW. A novel surgical planning system using an AI model to optimize planning of pedicle screw trajectories with highest bone mineral density and strongest pull-out force. Neurosurg Focus 2022; 52:E10. [DOI: 10.3171/2022.1.focus21721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 01/19/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE
The purpose of this study was to evaluate the ability of a novel artificial intelligence (AI) model in identifying optimized transpedicular screw trajectories with higher bone mineral density (BMD) as well as higher pull-out force (POF) in osteoporotic patients.
METHODS
An innovative pedicle screw trajectory planning system called Bone’s Trajectory was developed using a 3D graphic search and an AI-based finite element analysis model. The preoperative CT scans of 21 elderly osteoporotic patients were analyzed retrospectively. The AI model automatically calculated the number of alternative transpedicular trajectories, the trajectory BMD, and the estimated POF of L3–5. The highest BMD and highest POF of optimized trajectories were recorded and compared with AO standard trajectories.
RESULTS
The average patient age and average BMD of the vertebral bodies were 69.6 ± 7.8 years and 55.9 ± 17.1 mg/ml, respectively. On both sides of L3–5, the optimized trajectories showed significantly higher BMD and POF than the AO standard trajectories (p < 0.05). On average, the POF of optimized trajectory screws showed at least a 2.0-fold increase compared with AO trajectory screws.
CONCLUSIONS
The novel AI model performs well in enabling the selection of optimized transpedicular trajectories with higher BMD and POF than the AO standard trajectories.
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Affiliation(s)
- Chi Ma
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Da Zou
- Orthopaedic Department and
- Beijing Key Laboratory of Spinal Disease Research, Peking University Third Hospital, Beijing
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Peking University Third Hospital, Beijing
| | - Huan Qi
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Chentian Li
- Department of Orthopaedics and Traumatology, Zhujiang Hospital, Southern Medical University, Guangzhou; and
| | - Cheng Zhang
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Kedi Yang
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Feng Zhu
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
- Department of Orthopaedics, The University of Hong Kong–Shenzhen Hospital, Shenzhen, China
| | - Weishi Li
- Orthopaedic Department and
- Beijing Key Laboratory of Spinal Disease Research, Peking University Third Hospital, Beijing
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Peking University Third Hospital, Beijing
| | - William W. Lu
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
- Department of Orthopaedics, The University of Hong Kong–Shenzhen Hospital, Shenzhen, China
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14
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Li F, Wu J, Li D, Hao L, Li Y, Yi D, Yeung KWK, Chen D, Lu WW, Pan H, Wong TM, Zhao X. Engineering stem cells to produce exosomes with enhanced bone regeneration effects: an alternative strategy for gene therapy. J Nanobiotechnology 2022; 20:135. [PMID: 35292020 PMCID: PMC8922796 DOI: 10.1186/s12951-022-01347-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 03/02/2022] [Indexed: 02/08/2023] Open
Abstract
Background Exosomes derived from stem cells have been widely studied for promoting regeneration and reconstruction of multiple tissues as “cell-free” therapies. However, the applications of exosomes have been hindered by limited sources and insufficient therapeutic potency. Results In this study, a stem cell-mediated gene therapy strategy is developed in which mediator mesenchymal stem cells are genetically engineered by bone morphogenetic protein-2 gene to produce exosomes (MSC-BMP2-Exo) with enhanced bone regeneration potency. This effect is attributed to the synergistic effect of the content derived from MSCs and the up-regulated BMP2 gene expression. The MSC-BMP2-Exo also present homing ability to the injured site. The toxic effect of genetical transfection vehicles is borne by mediator MSCs, while the produced exosomes exhibit excellent biocompatibility. In addition, by plasmid tracking, it is interesting to find a portion of plasmid DNA can be encapsulated by exosomes and delivered to recipient cells. Conclusions In this strategy, engineered MSCs function as cellular factories, which effectively produce exosomes with designed and enhanced therapeutic effects. The accelerating effect in bone healing and the good biocompatibility suggest the potential clinical application of this strategy. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-022-01347-3.
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Affiliation(s)
- Feiyang Li
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Jun Wu
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China.,Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, 999077, China
| | - Daiye Li
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China.,Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, 999077, China
| | - Liuzhi Hao
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yanqun Li
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Dan Yi
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Kelvin W K Yeung
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China.,Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, 999077, China
| | - Di Chen
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - William W Lu
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.,Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, 999077, China
| | - Haobo Pan
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Tak Man Wong
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, China. .,Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, 999077, China.
| | - Xiaoli Zhao
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China.
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15
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Sun T, Liu D, Wu J, Lu WW, Zhao X, Wong TM, Liu ZL. Decreased expression of miR-195 mediated by hypermethylation promotes osteosarcoma. Open Med (Wars) 2022; 17:441-452. [PMID: 35350838 PMCID: PMC8919822 DOI: 10.1515/med-2022-0441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 12/29/2021] [Accepted: 01/24/2022] [Indexed: 11/15/2022] Open
Abstract
Osteosarcoma (OS) is the most common type of primary malignant bone tumor. The early lung metastasis of osteosarcoma is one of the main factors of poor prognosis. Therefore, searching for new targets and new mechanisms of osteosarcoma metastasis is essential for the prevention and treatment of osteosarcoma. Our previous studies suggested that fatty acid synthase (FASN) was an oncogene and promoted osteosarcoma. In addition, it is reported that the expression of miR-195 was negatively correlated with osteosarcoma. Aberrant DNA methylation can reversely regulate the expression of miRNAs. However, whether miR-195 could target FASN in osteosarcoma and whether ectopic DNA methylation is the upstream regulatory mechanism of miR-195 in metastasis of osteosarcoma are not fully studied. The expressions were detected by qPCR and western blot, and methylation level was determined by methylation-specific PCR. Luciferase reporter assay, MTT, wound healing, and Transwell assay were used. We found that the expression of miR-195 was low in osteosarcoma. The methylation of miR-195 was high. miR-195 targeted and decreased the expression of FASN. In osteosarcoma, miR-195 inhibited cell proliferation, cell migration, and invasion. The methylation of miR-195 was related to decreased miR-195, it might promote osteosarcoma.
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Affiliation(s)
- Tianhao Sun
- Shenzhen Key Laboratory for Innovative Technology in Ortho-paedic Trauma, Guangdong Engineering Technology Research Center for Orthopaedic Trauma Repair, Department of Orthopaedics and Traumatology, The University of Hong Kong-Shenzhen Hospital , Shenzhen 518053 , China
- Research Center for Human Tissue and Organs Degeneration, Institute Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , China
| | - Dongning Liu
- Department of Spinal Surgery, Shenzhen Sixth People’s Hospital(Nanshan Hospital), Huazhong University of Science and Technology Union Shenzhen Hospital , Shenzhen , China
| | - Jun Wu
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, Guangdong Engineering Technology Research Center for Orthopaedic Trauma Repair, Department of Orthopaedics and Traumatology, The University of Hong Kong-Shenzhen Hospital , Shenzhen 518053 , China
| | - William W. Lu
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, Guangdong Engineering Technology Research Center for Orthopaedic Trauma Repair, Department of Orthopaedics and Traumatology, The University of Hong Kong-Shenzhen Hospital , Shenzhen 518053 , China
- Research Center for Human Tissue and Organs Degeneration, Institute Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , China
| | - Xiaoli Zhao
- Research Center for Human Tissue and Organs Degeneration, Institute Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , China
| | - Tak Man Wong
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, Guangdong Engineering Technology Research Center for Orthopaedic Trauma Repair, Department of Orthopaedics and Traumatology, The University of Hong Kong-Shenzhen Hospital , Shenzhen 518053 , China
| | - Zhi-Li Liu
- Institute of Spine and Spinal Cord, Department of Orthopedic Surgery, The First Affiliated Hospital of Nanchang University , Nanchang 330006 , China
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16
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Li C, Ma C, Zhuo X, Li L, Li B, Li S, Lu WW. Focal osteoporosis defect is associated with vertebral compression fracture prevalence in a bone mineral density-independent manner. JOR Spine 2022; 5:e1195. [PMID: 35386753 PMCID: PMC8966878 DOI: 10.1002/jsp2.1195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 12/19/2021] [Accepted: 02/07/2022] [Indexed: 11/13/2022] Open
Abstract
Introduction Focal osteoporosis defect has shown a high association with the bone fragility and osteoporotic fracture prevalence. However, no routine computed tomography (CT)‐based vertebral focal osteoporosis defect measurement and its association with vertebral compression fracture (VCF) were discussed yet. This study aimed to develop a routine CT‐based measurement method for focal osteoporosis defect quantification, and to assess its association with the VCF prevalence. Materials and Methods A total of 205 cases who underwent routine CT scanning, were retrospectively reviewed and enrolled into either the VCF or the control group. The focal bone mineral content loss (focal BMC loss), measured as the cumulated demineralization within bone void space, was proposed for focal osteoporosis defect quantification. Its scan‐rescan reproducibility and its correlation with trabecular bone mineral density (BMD) and apparent microarchitecture parameters were evaluated. The association between focal BMC loss and the prevalence of VCF was studied by logistic regression. Results The measurement of focal BMC loss showed high reproducibility (RMSSD = 0.011 mm, LSC = 0.030 mm, ICC = 0.97), and good correlation with focal bone volume fraction (r = 0.79, P < 0.001), trabecular bone separation (r = 0.76, P < 0.001), but poor correlation with trabecular BMD (r = 0.37, P < 0.001). The focal BMC loss was significantly higher in the fracture group than the control (1.03 ± 0.13 vs. 0.93 ± 0.11 mm; P < 0.001), and was associated with prevalent VCF (1.87, 95% CI = 1.31–2.65, P < 0.001) independent of trabecular BMD level. Discussion As a surrogate measure of focal osteoporosis defect, focal BMC Loss independently associated with the VCF prevalence. It suggests that focal osteoporosis defect is a common manifestation that positively contributed to compression fracture risk and can be quantified with routine CT using focal BMC Loss.
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Affiliation(s)
- Chentian Li
- Department of Orthopedics and Taumatology Zhujiang Hospital, Southern Medical University Guangzhou Guangdong China.,Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine The University of Hong Kong Hong Kong SAR China
| | - Chi Ma
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine The University of Hong Kong Hong Kong SAR China
| | - Xianglong Zhuo
- Department of Orthopaedics Liuzhou Worker's Hospital, Guangxi Medical University Liuzhou Guangxi China
| | - Li Li
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine The University of Hong Kong Hong Kong SAR China.,Department of Orthopaedics Liuzhou Worker's Hospital, Guangxi Medical University Liuzhou Guangxi China
| | - Bing Li
- Department of Orthopaedics Liuzhou Worker's Hospital, Guangxi Medical University Liuzhou Guangxi China
| | - Songjian Li
- Department of Orthopedics and Taumatology Zhujiang Hospital, Southern Medical University Guangzhou Guangdong China
| | - William W Lu
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine The University of Hong Kong Hong Kong SAR China.,SIAT & Shenzhen Institutes of Advanced Technology Chinese Academy of Science Shenzhen Guangdong China
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17
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Liu Y, Zhang L, Hu N, Shao J, Yang D, Ruan C, Huang S, Wang L, Lu WW, Zhang X, Yang F. An optogenetic approach for regulating human parathyroid hormone secretion. Nat Commun 2022; 13:771. [PMID: 35140213 PMCID: PMC8828854 DOI: 10.1038/s41467-022-28472-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Accepted: 01/25/2022] [Indexed: 02/08/2023] Open
Abstract
Parathyroid hormone (PTH) plays crucial role in maintaining calcium and phosphorus homeostasis. In the progression of secondary hyperparathyroidism (SHPT), expression of calcium-sensing receptors (CaSR) in the parathyroid gland decreases, which leads to persistent hypersecretion of PTH. How to precisely manipulate PTH secretion in parathyroid tissue and underlying molecular mechanism is not clear. Here, we establish an optogenetic approach that bypasses CaSR to inhibit PTH secretion in human hyperplastic parathyroid cells. We found that optogenetic stimulation elevates intracellular calcium, inhibits both PTH synthesis and secretion in human parathyroid cells. Long-term pulsatile PTH secretion induced by light stimulation prevented hyperplastic parathyroid tissue-induced bone loss by influencing the bone remodeling in mice. The effects are mediated by light stimulation of opsin expressing parathyroid cells and other type of cells in parathyroid tissue. Our study provides a strategy to regulate release of PTH and associated bone loss of SHPT through an optogenetic approach. Parathyroid hormone (PTH) plays a role in maintaining calcium and phosphorus homeostasis, and in secondary hyperparathyroidism excess PTH secretion contributes to bone loss. Here the authors report an optogenetic approach to inhibit PTH secretion in human hyperplastic parathyroid cells, and prevented hyperplastic parathyroid tissue-induced bone loss in mice.
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Affiliation(s)
- Yunhui Liu
- The Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Lu Zhang
- The Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China.,Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong SAR, China
| | - Nan Hu
- Department of Nephrology and Shenzhen Key Laboratory of Kidney Diseases, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, Shenzhen, China
| | - Jie Shao
- The Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Dazhi Yang
- Department of Orthopedics, Union Shenzhen Hospital, Huazhong University of Science and Technology, Shenzhen, China
| | - Changshun Ruan
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen, China
| | - Shishu Huang
- Department of Orthopaedic Surgery and Orthopaedic Research Center, West China Hospital of Sichuan University, Chengdu, China
| | - Liping Wang
- The Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China
| | - William W Lu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong SAR, China
| | - Xinzhou Zhang
- Department of Nephrology and Shenzhen Key Laboratory of Kidney Diseases, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, Shenzhen, China.
| | - Fan Yang
- The Brain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China. .,University of Chinese Academy of Sciences, Beijing, China.
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18
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Xu L, Ma F, Leung FKL, Qin C, Lu WW, Tang B. Chitosan-strontium chondroitin sulfate scaffolds for reconstruction of bone defects in aged rats. Carbohydr Polym 2021; 273:118532. [PMID: 34560945 DOI: 10.1016/j.carbpol.2021.118532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/14/2021] [Accepted: 07/30/2021] [Indexed: 12/20/2022]
Abstract
Bone defects caused by trauma have become increasingly common in aged populations. Clinically, because of the relatively decreased bone healing capacity compared with the youth adults, bone defect repair in the elderly remains challenging. The development of effective biomaterials targeted at bone defects in the elderly is a key component of bone-tissue engineering strategies. However, little attention has been paid to bone regeneration in the elderly. Here, we developed a new scaffold chitosan-Strontium chondroitin sulfate (CH-SrCS) and evaluated its effect on improving bone regeneration. We find that the CH-SrCS scaffold displayed positive effects on downregulation of inflammation and osteoclastogenesis related mRNA expressions while demonstrating a significant increase in the expression level of BMP2. Finally, we show that the bone defects healing effects as assessed using an aged rats' bone defects model. Ultimately, this work also provides insights into the design of effective biomaterials targeted at bone defects in the elderly.
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Affiliation(s)
- Lei Xu
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, PR China; Department of Orthopeadics and Traumatology, LKS Faculty of Medicine, the University of Hong Kong, HK SAR, PR China; Department of Orthopeadics and Traumatology, Guangdong Second Provincial General Hospital, Guangzhou 510317, PR China
| | - Fenbo Ma
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, PR China
| | - Frankie K L Leung
- Department of Orthopeadics and Traumatology, LKS Faculty of Medicine, the University of Hong Kong, HK SAR, PR China
| | - Chenghe Qin
- Department of Orthopeadics and Traumatology, Guangdong Second Provincial General Hospital, Guangzhou 510317, PR China.
| | - William W Lu
- Department of Orthopeadics and Traumatology, LKS Faculty of Medicine, the University of Hong Kong, HK SAR, PR China.
| | - Bin Tang
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, PR China; Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, PR China; Shenzhen Key Laboratory of Cell Microenvironment, PR China.
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19
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Chen G, Wang S, Long C, Wang Z, Chen X, Tang W, He X, Bao Z, Tan B, Lu WW, Li Z, Yang D, Xiao G, Peng S. PiRNA-63049 inhibits bone formation through Wnt/β-catenin signaling pathway. Int J Biol Sci 2021; 17:4409-4425. [PMID: 34803507 PMCID: PMC8579447 DOI: 10.7150/ijbs.64533] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Accepted: 10/13/2021] [Indexed: 12/16/2022] Open
Abstract
Bone remodeling is a dynamic process between bone formation mediated by osteoblasts and bone resorption mediated by osteoclasts. Disrupted bone remodeling is a key factor in postmenopausal osteoporosis, a metabolic disorder characterized by deteriorated bone microarchitecture and increased risk of fracture. Recent studies have shown that piwi-binding RNA (piRNA) is involved in the pathogenesis of certain diseases at the post-transcriptional level. Here, we analyzed piRNA-63049 (piR-63049), which may play an essential role in bone remodeling. The expression of piR-63049 significantly increased in both bone tissues and plasma of osteoporotic rats and postmenopausal osteoporotic patients. Overexpressing piR-63049 could inhibit the osteoblastogenesis of bone marrow stromal cells (BMSCs) while knocking down piR-63049 could promote the osteoblastogenesis of BMSCs through the Wnt2b/β-catenin signaling pathway. Moreover, knocking-down piR-63049 (piR-63049-antagonist) in vivo could attenuate the bone loss in ovariectomized rats by promoting bone formation. Taken together, the current study shows that piR-63049 inhibits bone formation through the Wnt2b/β-catenin signaling pathway. This novel piRNA may be a potential target to increase bone formation in bone loss disorders such as postmenopausal osteoporosis.
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Affiliation(s)
- Gaoyang Chen
- Department of Spine Surgery, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen 518020, China.,The First Affiliated Hospital, Jinan University, Guangzhou 510630, China
| | - Shang Wang
- Department of Spine Surgery, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen 518020, China.,The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518055, China
| | - Canling Long
- Department of Spine Surgery, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen 518020, China.,The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhenmin Wang
- Department of Spine Surgery, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen 518020, China.,The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xin Chen
- Department of Spine Surgery, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen 518020, China.,The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wanze Tang
- The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xiaoqin He
- Department of Spine Surgery, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen 518020, China.,The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhiteng Bao
- Department of Spine Surgery, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen 518020, China.,The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518055, China
| | - Baoyu Tan
- Department of Spine Surgery, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen 518020, China.,The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518055, China
| | - William W Lu
- Department of Orthopaedic and Traumatology, The University of Hong Kong, Hong Kong, 999077 China
| | - Zhizhong Li
- The First Affiliated Hospital, Jinan University, Guangzhou 510630, China
| | - Dazhi Yang
- Department of Spine Surgery, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen 518020, China.,The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518055, China
| | - Guozhi Xiao
- School of Medicine, Southern University of Science and Technology, Guangdong, Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Shenzhen 518055, China
| | - Songlin Peng
- Department of Spine Surgery, the Second Clinical Medical College, Jinan University (Shenzhen People's Hospital), Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen 518020, China.,The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518055, China
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20
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Chen X, Tan B, Bao Z, Wang S, Tang R, Wang Z, Chen G, Chen S, Lu WW, Yang D, Peng S. Enhanced bone regeneration via spatiotemporal and controlled delivery of a genetically engineered BMP-2 in a composite Hydrogel. Biomaterials 2021; 277:121117. [PMID: 34517277 DOI: 10.1016/j.biomaterials.2021.121117] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 07/26/2021] [Accepted: 08/30/2021] [Indexed: 11/26/2022]
Abstract
Scaffolds functionalized with bone morphogenetic protein-2 (BMP-2) have shown great potential for bone regeneration. However, structural instability and the necessity for supra-physiological dose have thus far limited practical applications for BMP-2. Protein modification and site-specific covalent immobilization of BMP-2 to carrier materials might be optimal strategies to overcome these problems. Here, we report a broadly applicable strategy where the polyhistidine tag-T4 Lysozyme (His6-T4L) was genetically fused at the N-terminus of BMP-2 and used as a protein spacer, which on one hand enhanced protein solubility and stability, and on the other hand mediated site-specific covalent anchoring of BMP-2 upon binding to nickel-chelated nitrilotriacetic acid (Ni-NTA) microparticles (denoted as MPs-His6-T4L-BMP2) to further maximize its rescued activity. We also constructed a novel gelatin-based hydrogel that was crosslinked by transglutaminase (TG) and tannic acid (TA). This hydrogel, when incorporated with MPs-His6-T4L-BMP2, displayed excellent in-situ injectability, thermosensitivity, adhesiveness and improved mechanical properties. The effective loading mode led to a controlled and long-term sustained release of His6-T4L-BMP2, thereby resulting in enhancement of bone regeneration in a critical-sized bone defect. We believe that the protein modification strategy proposed here opens up new route not only for BMP-2 applications, but can be used to inform novel uses for other macromolecules.
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Affiliation(s)
- Xin Chen
- Department of Spine Surgery and Institute for Orthopaedic Research, Shenzhen People's Hospital, The First Affiliated Hospital of Southern University of Science and Technology, Jinan University Second College of Medicine, Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen, 518001, China
| | - Baoyu Tan
- Department of Spine Surgery and Institute for Orthopaedic Research, Shenzhen People's Hospital, The First Affiliated Hospital of Southern University of Science and Technology, Jinan University Second College of Medicine, Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen, 518001, China
| | - Zhiteng Bao
- Department of Spine Surgery and Institute for Orthopaedic Research, Shenzhen People's Hospital, The First Affiliated Hospital of Southern University of Science and Technology, Jinan University Second College of Medicine, Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen, 518001, China
| | - Shang Wang
- Department of Spine Surgery and Institute for Orthopaedic Research, Shenzhen People's Hospital, The First Affiliated Hospital of Southern University of Science and Technology, Jinan University Second College of Medicine, Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen, 518001, China
| | - Rongze Tang
- Department of Spine Surgery and Institute for Orthopaedic Research, Shenzhen People's Hospital, The First Affiliated Hospital of Southern University of Science and Technology, Jinan University Second College of Medicine, Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen, 518001, China
| | - Zhenmin Wang
- Department of Spine Surgery and Institute for Orthopaedic Research, Shenzhen People's Hospital, The First Affiliated Hospital of Southern University of Science and Technology, Jinan University Second College of Medicine, Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen, 518001, China
| | - Gaoyang Chen
- Department of Spine Surgery and Institute for Orthopaedic Research, Shenzhen People's Hospital, The First Affiliated Hospital of Southern University of Science and Technology, Jinan University Second College of Medicine, Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen, 518001, China
| | - Shuai Chen
- Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, China
| | - William W Lu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Dazhi Yang
- Department of Spine Surgery and Institute for Orthopaedic Research, Shenzhen People's Hospital, The First Affiliated Hospital of Southern University of Science and Technology, Jinan University Second College of Medicine, Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen, 518001, China.
| | - Songlin Peng
- Department of Spine Surgery and Institute for Orthopaedic Research, Shenzhen People's Hospital, The First Affiliated Hospital of Southern University of Science and Technology, Jinan University Second College of Medicine, Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen, 518001, China.
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21
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Feng B, Hu X, Lu WW, Wang Y, Ip WY. Are mindfulness treatments effective for pain in cancer patients? A systematic review and meta-analysis. Eur J Pain 2021; 26:61-76. [PMID: 34369040 DOI: 10.1002/ejp.1849] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/22/2021] [Accepted: 07/31/2021] [Indexed: 11/12/2022]
Abstract
BACKGROUND AND OBJECTIVE Mindfulness-based interventions (MBIs) have been recently applied in pain management and cancer care. However, inconsistencies exist concerning the effectiveness of MBIs on pain control among cancer patients. Therefore, this study aimed to examine the efficacy of MBIs on pain in cancer patients via a systematic review and meta-analysis of randomized controlled trials (RCTs). METHODS Databases (MEDLINE, PubMed, Embase, CINAHL, PsycINFO, Cochrane Central Register of Controlled Trials and ClinicalTrials.gov) were searched using key terms related to pain, cancer and mindfulness. The primary outcome was pain intensity. Standardized mean difference (SMD) of each outcome with 95% confidence interval (95% CI) was calculated. The quality of evidence was assessed by GRADE assessment. RESULTS Ten RCTs with 843 participants were included. Significant pooled effects of MBIs on pain intensity were found at both short-term (SMD = -0.19, 95% CI [-0.33 to -0.04]) and long-term (SMD = -0.20, 95% CI [-0.35 to -0.05]) follow-up, whereas no significance was observed for pain interference. In subgroup analyses, significant intervention effects were only seen in clinic-based MBIs compared to remote MBIs, and pooled effects of MBIs in attenuating pain were discovered relative to passive rather than active comparators. GRADE ratings showed moderate certainty of evidence in MBIs for pain intensity but low for pain interference. CONCLUSIONS The efficacy of MBIs in reducing pain intensity among cancer patients was revealed in this meta-analysis, albeit with a small effect size. Future research is warranted to optimize mindfulness treatment for pain control in cancer patients with high methodological quality and a large sample size. SIGNIFICANCE The effect of MBIs on pain in cancer patients was demonstrated in our analysis, albeit with small effect sizes. High-quality RCTs are needed to verify the efficacy of MBIs on cancer patients or survivors with pain complaints. Future trials should take into account the specific pain outcome measures (pain intensity or pain interference), the approach of intervention provision (clinic-based or remote MBI, group or individual practice), the duration and frequency of interventions and the comparators (passive or active control arms).
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Affiliation(s)
- Beibei Feng
- Department of Rehabilitation Medicine, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Department of Orthopaedics & Traumatology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Xiaoqian Hu
- School of Biomedical Sciences, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - William W Lu
- Department of Orthopaedics & Traumatology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Yuling Wang
- Department of Rehabilitation Medicine, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Wing-Yuk Ip
- Department of Orthopaedics & Traumatology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
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22
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Cui X, Huang C, Chen Z, Zhang M, Liu C, Su K, Wang J, Li L, Wang R, Li B, Chen D, Ruan C, Wang D, Lu WW, Pan H. Hyaluronic acid facilitates bone repair effects of calcium phosphate cement by accelerating osteogenic expression. Bioact Mater 2021; 6:3801-3811. [PMID: 33937587 PMCID: PMC8058907 DOI: 10.1016/j.bioactmat.2021.03.028] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/08/2021] [Accepted: 03/16/2021] [Indexed: 02/07/2023] Open
Abstract
Calcium phosphate cements (CPC) are widely anticipated to be an optimum bone repair substitute due to its satisfied biocompatibility and degradability, suitable to be used in minimally invasive treatment of bone defects. However the clinical application of CPC is still not satisfied by its poor cohesiveness and mechanical properties, in particular its osteoinductivity. Hyaluronic acid reinforced calcium phosphate cements (HA/CPC) showed extroadinary potential not only enhancing the compressive strength of the cements but also significantly increasing its osteoinductivity. In our study, the compressive strength of HA/CPC increased significantly when the cement was added 1% hyaluronic acid (denoted as 1-HA/CPC). In the meantime, hyaluronic acid obviously promoted ALP activity, osteogenic related protein and mRNA expression of hBMSCs (human bone marrow mesenchymal stem cells) in vitro, cement group of HA/CPC with 4% hyaluronic acid adding (denoted as 4-HA/CPC) showed optimal enhancement in hBMSCs differentiation. After being implanted in rat tibial defects, 4-HA/CPC group exhibited better bone repair ability and bone growth promoting factors, comparing to pure CPC and 1-HA/CPC groups. The underlying biological mechanism of this stimulation for HA/CPC may be on account of higher osteogenic promoting factors secretion and osteogenic genes expression with hyaluronic acid incorporation. These results indicate that hyaluronic acid is a highly anticipated additive to improve physicochemical properties and osteoinductivity performance of CPCs for minimally invasive healing of bone defects.
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Affiliation(s)
- Xu Cui
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Chengcheng Huang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Zhizhen Chen
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Meng Zhang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Chunyu Liu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Kun Su
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Jianyun Wang
- Shenzhen Healthemes Biotechnology Co. Ltd, Shenzhen, 518102, PR China
| | - Li Li
- Department of Orthopedics, Fourth Affiliated Hospital of Guangxi Medical University/Liu Zhou Worker, Liuzhou, 545005, PR China
| | - Renxian Wang
- Laboratory of Bone Tissue Engineering Beijing, Laboratory of Biomedical Materials, Beijing Research Institute of Orthopaedics and Traumatology, Beijing Jishuitan Hospital, Beijing, 100035, PR China
| | - Bing Li
- Department of Orthopedics, Fourth Affiliated Hospital of Guangxi Medical University/Liu Zhou Worker, Liuzhou, 545005, PR China
| | - Dafu Chen
- Laboratory of Bone Tissue Engineering Beijing, Laboratory of Biomedical Materials, Beijing Research Institute of Orthopaedics and Traumatology, Beijing Jishuitan Hospital, Beijing, 100035, PR China
| | - Changshun Ruan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Deping Wang
- Schools of Materials Science and Engineering, Tongji University, Shanghai, 201804, PR China
| | - William W Lu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China.,Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong SAR, PR China
| | - Haobo Pan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
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23
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Yang F, Liu Y, Chen S, Dai Z, Yang D, Gao D, Shao J, Wang Y, Wang T, Zhang Z, Zhang L, Lu WW, Li Y, Wang L. A GABAergic neural circuit in the ventromedial hypothalamus mediates chronic stress-induced bone loss. J Clin Invest 2021; 130:6539-6554. [PMID: 32910804 DOI: 10.1172/jci136105] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 08/26/2020] [Indexed: 12/25/2022] Open
Abstract
Homeostasis of bone metabolism is regulated by the central nervous system, and mood disorders such as anxiety are associated with bone metabolism abnormalities, yet our understanding of the central neural circuits regulating bone metabolism is limited. Here, we demonstrate that chronic stress in crewmembers resulted in decreased bone density and elevated anxiety in an isolated habitat mimicking a space station. We then used a mouse model to demonstrate that GABAergic neural circuitry in the ventromedial hypothalamus (VMH) mediates chronic stress-induced bone loss. We show that GABAergic inputs in the dorsomedial VMH arise from a specific group of somatostatin neurons in the posterior region of the bed nucleus of the stria terminalis, which is indispensable for stress-induced bone loss and is able to trigger bone loss in the absence of stressors. In addition, the sympathetic system and glutamatergic neurons in the nucleus tractus solitarius were employed to regulate stress-induced bone loss. Our study has therefore identified the central neural mechanism by which chronic stress-induced mood disorders, such as anxiety, influence bone metabolism.
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Affiliation(s)
- Fan Yang
- Brain Cognition and Brain Disease Institute, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences (CAS).,CAS Key Laboratory of Brain Connectome and Manipulation.,Guangdong Provincial Key Laboratory of Brain Connectome and Behavior.,Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yunhui Liu
- Brain Cognition and Brain Disease Institute, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences (CAS).,CAS Key Laboratory of Brain Connectome and Manipulation.,Guangdong Provincial Key Laboratory of Brain Connectome and Behavior.,Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Shanping Chen
- Brain Cognition and Brain Disease Institute, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences (CAS).,CAS Key Laboratory of Brain Connectome and Manipulation.,Guangdong Provincial Key Laboratory of Brain Connectome and Behavior.,Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Zhongquan Dai
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing, China
| | - Dazhi Yang
- Department of Orthopedics, Union Shenzhen Hospital, Huazhong University of Science and Technology, Shenzhen, China
| | - Dashuang Gao
- Brain Cognition and Brain Disease Institute, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences (CAS).,CAS Key Laboratory of Brain Connectome and Manipulation.,Guangdong Provincial Key Laboratory of Brain Connectome and Behavior.,Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Jie Shao
- Brain Cognition and Brain Disease Institute, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences (CAS).,CAS Key Laboratory of Brain Connectome and Manipulation.,Guangdong Provincial Key Laboratory of Brain Connectome and Behavior.,Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yuyao Wang
- Brain Cognition and Brain Disease Institute, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences (CAS).,CAS Key Laboratory of Brain Connectome and Manipulation.,Guangdong Provincial Key Laboratory of Brain Connectome and Behavior.,Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China
| | - Ting Wang
- Brain Cognition and Brain Disease Institute, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences (CAS).,CAS Key Laboratory of Brain Connectome and Manipulation.,Guangdong Provincial Key Laboratory of Brain Connectome and Behavior.,Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China
| | - Zhijian Zhang
- Center for Brain Science, Key Laboratory of Magnetic Resonance in Biological Systems and State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, CAS, Wuhan, China.,Center for Excellence in Brain Science and Intelligence Technology, CAS, Shanghai, China
| | - Lu Zhang
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, China
| | - William W Lu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, China
| | - Yinghui Li
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing, China
| | - Liping Wang
- Brain Cognition and Brain Disease Institute, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences (CAS).,CAS Key Laboratory of Brain Connectome and Manipulation.,Guangdong Provincial Key Laboratory of Brain Connectome and Behavior.,Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China.,University of Chinese Academy of Sciences, Beijing, China
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24
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Abstract
AIMS To draw a comparison of the pullout strengths of buttress thread, barb thread, and reverse buttress thread bone screws. METHODS Buttress thread, barb thread, and reverse buttress thread bone screws were inserted into synthetic cancellous bone blocks. Five screw-block constructs per group were tested to failure in an axial pullout test. The pullout strengths were calculated and compared. A finite element analysis (FEA) was performed to explore the underlying failure mechanisms. FEA models of the three different screw-bone constructs were developed. A pullout force of 250 N was applied to the screw head with a fixed bone model. The compressive and tensile strain contours of the midsagittal plane of the three bone models were plotted and compared. RESULTS The barb thread demonstrated the lowest pullout strength (mean 176.16 N (SD 3.10)) among the three thread types. It formed a considerably larger region with high tensile strains and a slightly smaller region with high compressive strains within the surrounding bone structure. The reverse buttress thread demonstrated the highest pullout strength (mean 254.69 N (SD 4.15)) among the three types of thread. It formed a considerably larger region with high compressive strains and a slightly smaller region with high tensile strains within the surrounding bone structure. CONCLUSION Bone screws with a reverse buttress thread design will significantly increase the pullout strength. Cite this article: Bone Joint Res 2021;10(2):105-112.
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Affiliation(s)
- Xiaoreng Feng
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.,Department of Orthopaedics & Traumatology, Yangjiang People's Hospital, Yangjiang, China
| | - Weichen Qi
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Christian X Fang
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - William W Lu
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Frankie K L Leung
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Bin Chen
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
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25
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Cui X, Zhang Y, Wang J, Huang C, Wang Y, Yang H, Liu W, Wang T, Wang D, Wang G, Ruan C, Chen D, Lu WW, Huang W, Rahaman MN, Pan H. Corrigendum to "Strontium modulates osteogenic activity of bone cement composed of bioactive borosilicate glass particles by activating Wnt/β-catenin signaling pathway" [Bioact. Mater. 5 (2020) 334-347]. Bioact Mater 2021; 6:2643-2645. [PMID: 34027241 DOI: 10.1016/j.bioactmat.2020.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
[This corrects the article DOI: 10.1016/j.bioactmat.2020.02.016.].
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Affiliation(s)
- Xu Cui
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China.,Schools of Materials Science and Engineering, Tongji University, Shanghai, 201804, PR China
| | - Yadong Zhang
- Department of Orthopaedics, Shanghai Fengxian Central Hospital, South Campus of the Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, 201499, PR China.,Department of Orthopaedics, Fengxian Central Hospital Affiliated to Southern Medical University, Shanghai, 201499, PR China
| | - Jianyun Wang
- Shenzhen Healthemes Biotechnology Co.Ltd, Shenzhen, 518102, PR China
| | - Chengcheng Huang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Yudong Wang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Hongsheng Yang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Wenlong Liu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Ting Wang
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, Department of Orthopaedics, The University of Hong Kong-Shenzhen Hospital, University of Hong Kong, Shenzhen, 518053, PR China
| | - Deping Wang
- Schools of Materials Science and Engineering, Tongji University, Shanghai, 201804, PR China
| | - Guocheng Wang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Changshun Ruan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Dafu Chen
- Laboratory of Bone Tissue Engineering Beijing, Laboratory of Biomedical Materials, Beijing Research Institute of Orthopaedics and Traumatology, Beijing Jishuitan Hospital, Beijing, 100035, PR China
| | - William W Lu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China.,Department of Orthopaedics and Traumatology, The University of Hong Kong, Room 907, Lab Block, 21 Sassoon Road, Hong Kong, China
| | - Wenhai Huang
- Schools of Materials Science and Engineering, Tongji University, Shanghai, 201804, PR China
| | - Mohamed N Rahaman
- Department of Materials Science and Engineering, Missouri University of Science and Technology, MO, 65409-0340, USA
| | - Haobo Pan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
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26
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Li Y, Yue J, Liu Y, Wu J, Guan M, Chen D, Pan H, Zhao X, Lu WW. Strontium regulates stem cell fate during osteogenic differentiation through asymmetric cell division. Acta Biomater 2021; 119:432-443. [PMID: 33148429 DOI: 10.1016/j.actbio.2020.10.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 10/13/2020] [Accepted: 10/20/2020] [Indexed: 12/19/2022]
Abstract
Strontium, a popular osteogenic component, has been incorporated into various types of orthopaedic biomaterials to enhance bone regeneration. Strontium performs dual effects in promoting bone formation and inhibiting bone resorption. Previous studies have focused on the effects of strontium ions (Sr2+) in regulating stem cell behavior to initiate regenerative capacity. However, its mechanisms for regulating the fate and homeostasis of stem cells have not been fully elucidated. In this study, the promotive effect of Sr2+ on the osteogenic differentiation of mesenchymal stem cells was confirmed both in vitro and in vivo. Interestingly, in response to Sr2+ treatment, stem cells performed asymmetric cell division to balance stemness maintenance and osteogenic differentiation. In initiating osteogenic differentiation, Sr2+ maintained more cells in the cell cycle by upregulating the population of S and G2/M phase cells, and this increase in the cell population contributed to enhanced osteogenic differentiation. The divided cells with different cell fates were observed, with one daughter cell maintained stemness, while the other committed to osteogenic lineage. Further investigation revealed that Sr2+ activated noncanonical Wnt signaling to regulate the expression and distribution of the Par complex, thus regulating cell division. As a result, the daughter cells committed to different cell fates due to the discriminately activation of osteogenic transcription factors caused by asymmetrically distributed Par3 and aPKC. The results of this study could facilitate the design of biomaterials for bone regeneration by providing a better understanding of cell fate determination regulated by strontium.
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27
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Sun ZZ, Huang XX, Lin N, Lu WW, Guo HY. [Dihydromyricin alleviates doxorubicin-induced myocardial injury by inhibiting NLRP3 inflammasome in rats]. Zhonghua Bing Li Xue Za Zhi 2020; 49:1046-1051. [PMID: 32992421 DOI: 10.3760/cma.j.cn112151-20200108-00020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Objective: To investigate the protective effect of dihydromyricetin (DHM) on doxorubicin (DOX)-induced myocardial injury and its mechanism. Methods: Twenty-four healthy male SD rats were divided into 4 groups: control group, DOX group, DOX+DHM100 group and DOX+DHM200 group. Echocardiography was used to measure cardiac function. At the end of the 6th week, the rats were anesthetized and sacrificed, and the pathological changes of the cardiac tissues were observed by HE staining, Masson staining and WGA staining. Cardiomyocyte apoptosis was observed by TUNEL staining, and protein levels of NLRP3, caspase-1, IL-1β, bax and bcl-2 were detected by Western blot and immunohistochemistry. Results: Compared with the control group, the left ventricular ejection fraction and left ventricular fractional shortening decreased significantly in DOX group, while left ventricular internal dimension at systole and left ventricular internal dimension at diastole increased. In DOX+DHM group, both left ventricular ejection fraction and left ventricular fractional shortening increased, while left ventricular internal dimension at systole and left ventricular internal dimension at diastole decreased (P<0.05). Furthermore, DOX group showed significant myocardial injury histologically, while DOX+DHM group significantly inhibited DOX-induced myocardial injury in rats. Meanwhile, cardiomyocyte hypertrophy was found in the DOX group, while the cardiomyocyte hypertrophy was notably inhibited in the DOX+DHM group. Compared with the control group, the apoptotic rates of cardiomyocytes and the levels of bax/bcl-2 ratio were significantly increased in DOX group, which were significantly alleviated in the DOX+DHM group (P<0.05). In addition, the levels of NLRP3, caspase-1 and IL-1β were increased as compared with control group, while the levels of the above indicators were remarkably reversed in DOX+DHM group as compared with DOX group (P<0.05). Conclusion: DHM alleviates DOX-induced myocardial injury in rats by inhibiting NLRP3 inflammasome and reducing cardiomyocyte apoptosis.
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Affiliation(s)
- Z Z Sun
- Department of Cardiology, the First Clinical Medical College, Wenzhou Medical University, Wenzhou 325025, Zhejiang Province, China
| | - X X Huang
- Department of Cardiology, Zhejiang University School of Medicine, Hangzhou 310020, China
| | - N Lin
- Department of Cardiology, the Second Clinical Medical College, Zhejiang Chinese Medicine University, Hangzhou 310053, China
| | - W W Lu
- Department of Cardiology, Zhejiang University School of Medicine, Hangzhou 310020, China
| | - H Y Guo
- Department of Cardiology, the First Clinical Medical College, Wenzhou Medical University, Wenzhou 325025, Zhejiang Province, China
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28
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Yang M, Liu Q, Huang T, Tan W, Qu L, Chen T, Pan H, Chen L, Liu J, Wong CW, Lu WW, Guan M. Dysfunction of estrogen-related receptor alpha-dependent hepatic VLDL secretion contributes to sex disparity in NAFLD/NASH development. Theranostics 2020; 10:10874-10891. [PMID: 33042259 PMCID: PMC7532682 DOI: 10.7150/thno.47037] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 08/04/2020] [Indexed: 12/12/2022] Open
Abstract
Rationale: Men and postmenopausal women are more prone to developing non-alcoholic fatty liver disease/steatohepatitis (NAFLD/NASH) than premenopausal women. However, the pathological links and underlying mechanisms of this disparity are still elusive. The sex-difference in hepatic very low-density lipoprotein (VLDL) assembly and secretion may contribute to NAFLD development. Estrogen-related receptor alpha (ERRα) is a key regulator of several metabolic processes. We hypothesized that ERRα plays a role contributing to the sex-difference in hepatic VLDL assembly and secretion. Methods: VLDL secretion and essential genes governing said process were assessed in male and female mice. Liver-specific ERRα-deficient (ERRαLKO) mice were generated to assess the rate of hepatic VLDL secretion and alteration in target gene expression. Overexpression of either microsomal triglyceride transfer protein (Mttp) or phospholipase A2 G12B (Pla2g12b) by adenovirus was performed to test if the fatty liver phenotype in male ERRαLKO mice was due to defects in hepatic VLDL secretion. Female ERRαLKO mice were put on a diet high in saturated fat, fructose and cholesterol (HFHC) to promote NASH development. Wild type female mice were either ovariectomized or treated with tamoxifen to induce a state of estrogen deficiency or disruption in estrogen signaling. Adenovirus was used to overexpress ERRα in these mice to test if ERRα was sufficient to rescue the suppressed VLDL secretion due to estrogen dysfunction. Finally, wild type male mice on a high-fat diet (HFD) were treated with an ERRα inverse agonist to assess if suppressing ERRα activity pharmacologically would lead to fatty liver development. Results: ERRα is an indispensable mediator modulating hepatic triglyceride-rich very low-density lipoprotein (VLDL-TG) assembly and secretion through coordinately controlling target genes apolipoprotein B (Apob), Mttp and Pla2g12b in a sex-different manner. Hepatic VLDL-TG secretion is blunted in ERRαLKO mice, leading to hepatosteatosis which exacerbates endoplasmic reticulum stress and inflammation paving ways for NASH development. Importantly, ERRα acts downstream of estrogen/ERα signaling in contributing to the sex-difference in hepatic VLDL secretion effecting hepatic lipid homeostasis. Conclusions: Our results highlight ERRα as a key mediator which contributes to the sex disparity in NAFLD development, suggesting that selectively restoring ERRα activity in the liver may be a novel strategy for treating NAFLD/NASH.
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Affiliation(s)
- Meng Yang
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qingli Liu
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
| | - Tongling Huang
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
| | - Wenjuan Tan
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong, China
| | - Linbing Qu
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, Guangdong, China
| | - Tianke Chen
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
| | - Haobo Pan
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
| | - Ling Chen
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, Guangdong, China
| | - Jinsong Liu
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, Guangdong, China
| | - Chi-Wai Wong
- NeuMed Pharmaceuticals Limited, Yuen Long, Hong Kong, China
| | - William W. Lu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, China
| | - Min Guan
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China
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29
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Cui X, Zhang Y, Wang J, Huang C, Wang Y, Yang H, Liu W, Wang T, Wang D, Wang G, Ruan C, Chen D, Lu WW, Huang W, Rahaman MN, Pan H. Strontium modulates osteogenic activity of bone cement composed of bioactive borosilicate glass particles by activating Wnt/β-catenin signaling pathway. Bioact Mater 2020; 5:334-347. [PMID: 32206735 PMCID: PMC7078288 DOI: 10.1016/j.bioactmat.2020.02.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 02/24/2020] [Accepted: 02/26/2020] [Indexed: 01/06/2023] Open
Abstract
There is a need for synthetic grafts to reconstruct large bone defects using minimal invasive surgery. Our previous study showed that incorporation of Sr into bioactive borate glass cement enhanced the osteogenic capacity in vivo. However, the amount of Sr in the cement to provide an optimal combination of physicochemical properties and capacity to stimulate bone regeneration and the underlying molecular mechanism of this stimulation is yet to be determined. In this study, bone cements composed of bioactive borosilicate glass particles substituted with varying amounts of Sr (0 mol% to 12 mol% SrO) were created and evaluated in vitro and in vivo. The setting time of the cement increased with Sr substitution of the glass. Upon immersion in PBS, the cement degraded and converted more slowly to HA (hydroxyapatite) with increasing Sr substitution. The released Sr2+ modulated the proliferation, differentiation, and mineralization of hBMSCs (human bone marrow mesenchymal stem cells) in vitro. Osteogenic characteristics were optimally enhanced with cement (designated BG6Sr) composed of particles substituted with 6mol% SrO. When implanted in rabbit femoral condyle defects, BG6Sr cement supported better peri-implant bone formation and bone-implant contact, comparing to cements substituted with 0mol% or 9mol% SrO. The underlying mechanism is involved in the activation of Wnt/β-catenin signaling pathway in osteogenic differentiation of hBMSCs. These results indicate that BG6Sr cement has a promising combination of physicochemical properties and biological performance for minimally invasive healing of bone defects. A bone cement composed of Sr-substituted bioactive glass was developed. Sr can modulate the physicochemical properties of bone cements. Sr can enhance the osteogenic capacity of bone cements. Wnt/β-catenin pathway is involved in osteogenesis of the bone cements.
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Affiliation(s)
- Xu Cui
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China.,Schools of Materials Science and Engineering, Tongji University, Shanghai, 201804, PR China
| | - Yadong Zhang
- Department of Orthopaedics, Shanghai Fengxian Central Hospital, South Campus of the Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, 201499, PR China.,Department of Orthopaedics, Fengxian Central Hospital Affiliated to Southern Medical University, Shanghai, 201499, PR China
| | - Jianyun Wang
- Shenzhen Healthemes Biotechnology Co.Ltd, Shenzhen, 518102, PR China
| | - Chengcheng Huang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Yudong Wang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Hongsheng Yang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Wenlong Liu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Ting Wang
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, Department of Orthopaedics, The University of Hong Kong-Shenzhen Hospital, University of Hong Kong, Shenzhen, 518053, PR China
| | - Deping Wang
- Schools of Materials Science and Engineering, Tongji University, Shanghai, 201804, PR China
| | - Guocheng Wang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Changshun Ruan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
| | - Dafu Chen
- Laboratory of Bone Tissue Engineering Beijing, Laboratory of Biomedical Materials, Beijing Research Institute of Orthopaedics and Traumatology, Beijing Jishuitan Hospital, Beijing, 100035, PR China
| | - William W Lu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China.,Department of Orthopaedics and Traumatology, The University of Hong Kong, Room 907, Lab Block, 21 Sassoon Road, Hong Kong SAR, PR China
| | - Wenhai Huang
- Schools of Materials Science and Engineering, Tongji University, Shanghai, 201804, PR China
| | - Mohamed N Rahaman
- Department of Materials Science and Engineering, Missouri University of Science and Technology, MO, 65409-0340, USA
| | - Haobo Pan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518055, PR China
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30
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Zhang J, Lu WW, Meng LP. [miR-449a induces phenotypic transformation of vascular smooth muscle cells by targeting KLF4]. Zhonghua Bing Li Xue Za Zhi 2020; 49:180-182. [PMID: 32074734 DOI: 10.3760/cma.j.issn.0529-5807.2020.02.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J Zhang
- Department of Cardiology, Shaoxing People's Hospital, Shaoxing Hospital of Zhejiang University, Zhejiang Province, Shaoxing 312000, China
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31
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Wang Z, Zhao J, Tang W, Hu L, Chen X, Su Y, Zou C, Wang J, Lu WW, Zhen W, Zhang R, Yang D, Peng S. Multifunctional Nanoengineered Hydrogels Consisting of Black Phosphorus Nanosheets Upregulate Bone Formation. Small 2019; 15:e1901560. [PMID: 31423735 DOI: 10.1002/smll.201901560] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 08/01/2019] [Indexed: 05/16/2023]
Abstract
Tissue-engineered hydrogels have received extensive attention as their mechanical properties, chemical compositions, and biological signals can be dynamically modified for mimicking extracellular matrices (ECM). Herein, the synthesis of novel double network (DN) hydrogels with tunable mechanical properties using combinatorial screening methods is reported. Furthermore, nanoengineered (NE) hydrogels are constructed by addition of ultrathin 2D black phosphorus (BP) nanosheets to the DN hydrogels with multiple functions for mimicking the ECM microenvironment to induce tissue regeneration. Notably, it is found that the BP nanosheets exhibit intrinsic properties for induced CaP crystal particle formation and therefore improve the mineralization ability of NE hydrogels. Finally, in vitro and in vivo data demonstrate that the BP nanosheets, mineralized CaP crystal nanoparticles, and excellent mechanical properties provide a favorable ECM microenvironment to mediate greater osteogenic cell differentiation and bone regeneration. Consequently, the combination of bioactive chemical materials and excellent mechanical stimuli of NE hydrogels inspire novel engineering strategies for bone-tissue regeneration.
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Affiliation(s)
- Zhenming Wang
- Department of Spine Surgery and Institute for Orthopaedic Research, The 2nd Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen, 518020, China
- Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou, 510632, China
| | - Jin Zhao
- Department of Spine Surgery and Institute for Orthopaedic Research, The 2nd Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen, 518020, China
| | - Wanze Tang
- Department of Spine Surgery and Institute for Orthopaedic Research, The 2nd Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen, 518020, China
| | - Liqiu Hu
- Department of Spine Surgery and Institute for Orthopaedic Research, The 2nd Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen, 518020, China
| | - Xin Chen
- Department of Spine Surgery and Institute for Orthopaedic Research, The 2nd Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen, 518020, China
| | - Yiping Su
- School of Environment Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chang Zou
- The Shenzhen Public Service Platform on Tumor Precision Medicine and Molecular Diagnosis, Shenzhen, 519020, China
| | - Jianhong Wang
- The Shenzhen Public Service Platform on Tumor Precision Medicine and Molecular Diagnosis, Shenzhen, 519020, China
| | - William W Lu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, 999077, China
| | - Wanxin Zhen
- Department of Spine Surgery and Institute for Orthopaedic Research, The 2nd Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen, 518020, China
| | - Ronghua Zhang
- Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou, 510632, China
- College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Dazhi Yang
- Department of Spine Surgery and Institute for Orthopaedic Research, The 2nd Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen, 518020, China
| | - Songlin Peng
- Department of Spine Surgery and Institute for Orthopaedic Research, The 2nd Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen, 518020, China
- The Shenzhen Public Service Platform on Tumor Precision Medicine and Molecular Diagnosis, Shenzhen, 519020, China
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32
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Feng X, Lin G, Fang CX, Lu WW, Chen B, Leung FKL. Bone resorption triggered by high radial stress: The mechanism of screw loosening in plate fixation of long bone fractures. J Orthop Res 2019; 37:1498-1507. [PMID: 30908687 DOI: 10.1002/jor.24286] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 03/08/2019] [Indexed: 02/04/2023]
Abstract
Screw loosening is a common complication in plate fixation. However, the underlying mechanism is unclear. This study investigated screw loosening mechanisms by finite element analysis (FEA) simulation and clinical X-ray feature analysis. Two FEA models incorporated bone heterogeneity and orthotropy, representing fracture fixation using dynamic compression plate (DCP) and locking compression plate (LCP), were developed. These models were used to examine the volume of bone exceeding a certain stress value around each screw under physiologically-relevant loading conditions. These damaged bone was then separated and compared by the axial stress and radial stress of each screw. In addition, features of patients' X-ray images showing screw loosening were analyzed to validate the loosening features simulated by the models. The FEA study showed that more damaged bone was found at the central two screws which gradually decreased toward the two end screws in all groups. More bone was damaged by the radial stress of each screw than by the axial stress. The radiological analysis of screw loosening showed that bone loss occurred at the screw closest to the fracture line first then subsequent bone loss at the screws further away from the fracture line occurred. This study found that the two screws nearest to the fracture line are more vulnerable to loosening. The radial stress of the screw plays a larger role in screw loosening than the axial stress. Bone resorption triggered by the high radial stress of screws is indicated as the mechanism of screw loosening in the diaphyseal plate fixation. © 2019 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:1498-1507, 2019.
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Affiliation(s)
- Xiaoreng Feng
- Department of Orthopaedics and Traumatology, Queen Mary Hospital, the University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Guanghu Lin
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Christian X Fang
- Department of Orthopaedics and Traumatology, Queen Mary Hospital, the University of Hong Kong, Pok Fu Lam, Hong Kong
| | - William W Lu
- Department of Orthopaedics and Traumatology, Queen Mary Hospital, the University of Hong Kong, Pok Fu Lam, Hong Kong
| | - Bin Chen
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Frankie K L Leung
- Department of Orthopaedics and Traumatology, Queen Mary Hospital, the University of Hong Kong, Pok Fu Lam, Hong Kong.,Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518000, China
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Sun T, Zhong X, Song H, Liu J, Li J, Leung F, Lu WW, Liu ZL. Anoikis resistant mediated by FASN promoted growth and metastasis of osteosarcoma. Cell Death Dis 2019; 10:298. [PMID: 30931932 PMCID: PMC6443797 DOI: 10.1038/s41419-019-1532-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/04/2019] [Accepted: 03/06/2019] [Indexed: 12/12/2022]
Abstract
The pulmonary metastasis of osteosarcoma (OS) occurs commonly, which resulted from anoikis resistant (AR) of tumor cells as reported by previous studies, but the exact roles of AR in osteosarcoma were not fully studied. Our previous investigations showed fatty acid synthase (FASN) was relating to clinical features of patients with OS. In this study, we aim to explore the functions of FASN in the AR OS cells in vitro and in vivo and study the downstream effectors of FASN. In the present study, we used our established cell model to study the AR. We revealed that AR promoted cell proliferation and migration as determined by colony formation assay and transwell assay. In addition, AR assisted tumor growth in vivo. In the AR cells, the expression of FASN was higher. Thus, we constructed lentiviruses to silence or overexpress FASN in four cell lines to study functions of FASN. Silence of FASN reduced cell colonies and migration while overexpression of FASN increased colonies and migration in suspended cells. Loss of functions of FASN induced cell apoptosis in suspended OS cells while gain of function of FASN suppressed apoptosis as determined by flow cytometry. We found the levels of p-ERK1/2 and Bcl-xL declined when FASN was silenced while they increased when FASN was overexpressed. In addition, results showed that the levels of FASN and its potential related molecules (p-ERK1/2 and Bcl-xL) increased in 143B-AR and MG-63-AR cells. In vivo study showed that inhibition of FASN decreased pulmonary metastasis of OS. In conclusion, we showed that anoikis resistant and FASN as two interactional factors facilitated the progress of osteosarcoma.
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Affiliation(s)
- Tianhao Sun
- Department of Orthopedic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China.,Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Xing Zhong
- Department of Orthopedic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China.,Division of Chemotherapy, Jiangxi Cancer Hospital, Nanchang, Jiangxi Province, China
| | - Honghai Song
- Department of Orthopedic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Jiaming Liu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Jingao Li
- Division of Chemotherapy, Jiangxi Cancer Hospital, Nanchang, Jiangxi Province, China
| | - Frankie Leung
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
| | - William W Lu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China. .,Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518000, China.
| | - Zhi-Li Liu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China.
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Liu W, Dan X, Lu WW, Zhao X, Ruan C, Wang T, Cui X, Zhai X, Ma Y, Wang D, Huang W, Pan H. Spatial Distribution of Biomaterial Microenvironment pH and Its Modulatory Effect on Osteoclasts at the Early Stage of Bone Defect Regeneration. ACS Appl Mater Interfaces 2019; 11:9557-9572. [PMID: 30720276 DOI: 10.1021/acsami.8b20580] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
It is generally accepted that biodegradable materials greatly influence the nearby microenvironment where cells reside; however, the range of interfacial properties has seldom been discussed due to technical bottlenecks. This study aims to depict biomaterial microenvironment boundaries by correlating interfacial H+ distribution with surrounding cell behaviors. Using a disuse-related osteoporotic mouse model, we confirmed that the abnormal activated osteoclasts could be suppressed under relatively alkaline conditions. The differentiation and apatite-resorption capability of osteoclasts were "switched off" when cultured in titrated material extracts with pH values higher than 7.8. To generate a localized alkaline microenvironment, a series of borosilicates were fabricated and their interfacial H+ distributions were monitored spatiotemporally by employing noninvasive microtest technology. By correlating interfacial H+ distribution with osteoclast "switch on/off" behavior, the microenvironment boundary of the tested material was found to be 400 ± 50 μm, which is broader than the generally accepted value, 300 μm. Furthermore, osteoporotic mice implanted with materials with higher interfacial pH values and boarder effective ranges had lower osteoclast activities and a thicker new bone. To conclude, effective proton microenvironment boundaries of degradable biomaterials were depicted and a weak alkaline microenvironment was shown to promote regeneration of osteoporotic bones possibly by suppressing abnormal activated osteoclasts.
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Affiliation(s)
- Wenlong Liu
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , China
| | - Xiuli Dan
- School of Biomedical Sciences, Faculty of Medicine , The Chinese University of Hong Kong , 999077 Hong Kong , China
| | - William W Lu
- Department of Orthopaedics and Traumatology, Faculty of Medicine , The University of Hong Kong , 999077 Hong Kong , China
| | - Xiaoli Zhao
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , China
| | - Changshun Ruan
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , China
| | - Ting Wang
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, Department of Orthopaedics , The University of Hong Kong-Shenzhen Hospital, University of Hong Kong , Shenzhen 518053 , China
| | - Xu Cui
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , China
| | - Xinyun Zhai
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , China
- Department of Orthopaedics and Traumatology, Faculty of Medicine , The University of Hong Kong , 999077 Hong Kong , China
| | - Yufei Ma
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , China
| | - Deping Wang
- Institute of Bioengineering and Information Technology Materials, School of Materials Science and Engineering , Tongji University , Shanghai 200092 , China
| | - Wenhai Huang
- Institute of Bioengineering and Information Technology Materials, School of Materials Science and Engineering , Tongji University , Shanghai 200092 , China
| | - Haobo Pan
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , China
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35
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Chen Q, Zheng C, Li Y, Bian S, Pan H, Zhao X, Lu WW. Bone Targeted Delivery of SDF-1 via Alendronate Functionalized Nanoparticles in Guiding Stem Cell Migration. ACS Appl Mater Interfaces 2018; 10:23700-23710. [PMID: 29939711 DOI: 10.1021/acsami.8b08606] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Stem cells are well-known for their great capacity for tissue regeneration. This provides a promising source for cell-based therapies in treating various bone degenerative disorders. However, the major hurdles for their application in transplantation are the poor bone marrow homing and engraftment efficiencies. Stromal cell-derived factor 1 (SDF-1) has been identified as a major stem cell homing factor. With the aims of bone targeted SDF-1 delivery and regulating MSCs migration, alendronate modified liposomal nanoparticles (Aln-Lipo) carrying SDF-1 gene were developed in this study. Alendronate modification significantly increased the mineral binding affinity of liposomes, and facilitated the gene delivery to osteoblastic cells. Up-regulated SDF-1 expression in osteoblasts triggered MSCs migration. Systemic infusion of Aln-Lipo-SDF-1 with fluorescence labeling in mice showed the accumulation in osseous tissue by biophotonic imaging. Corresponding to the delivered SDF-1, the transplanted GFP+ MSCs were attracted to bone marrow and contributed to bone regeneration. This study may provide a useful technique in regulating stem cell migration.
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Affiliation(s)
- Qingchang Chen
- Research Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , 518055 , PR China
| | - Chuping Zheng
- Research Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , 518055 , PR China
- School of Pharmaceutical Science , Guangzhou Medical University , Guangzhou , Guangdong , 511436 , PR China
| | - Yanqun Li
- Research Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , 518055 , PR China
| | - Shaoquan Bian
- Research Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , 518055 , PR China
| | - Haobo Pan
- Research Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , 518055 , PR China
| | - Xiaoli Zhao
- Research Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen , 518055 , PR China
| | - William W Lu
- Department of Orthopaedic and Traumatology , The University of Hong Kong , 21 Sassoon Rd. , Pokfulam , 999077 , Hong Kong, PR China
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36
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Kulper SA, Fang CX, Ren X, Guo M, Sze KY, Leung FKL, Lu WW. Development and initial validation of a novel smoothed-particle hydrodynamics-based simulation model of trabecular bone penetration by metallic implants. J Orthop Res 2018; 36:1114-1123. [PMID: 28906014 DOI: 10.1002/jor.23734] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 08/31/2017] [Indexed: 02/04/2023]
Abstract
A novel computational model of implant migration in trabecular bone was developed using smoothed-particle hydrodynamics (SPH), and an initial validation was performed via correlation with experimental data. Six fresh-frozen human cadaveric specimens measuring 10 × 10 × 20 mm were extracted from the proximal femurs of female donors (mean age of 82 years, range 75-90, BV/TV ratios between 17.88% and 30.49%). These specimens were then penetrated under axial loading to a depth of 10 mm with 5 mm diameter cylindrical indenters bearing either flat or sharp/conical tip designs similar to blunt and self-tapping cancellous screws, assigned in a random manner. SPH models were constructed based on microCT scans (17.33 µm) of the cadaveric specimens. Two initial specimens were used for calibration of material model parameters. The remaining four specimens were then simulated in silico using identical material model parameters. Peak forces varied between 92.0 and 365.0 N in the experiments, and 115.5-352.2 N in the SPH simulations. The concordance correlation coefficient between experimental and simulated pairs was 0.888, with a 95%CI of 0.8832-0.8926, a Pearson ρ (precision) value of 0.9396, and a bias correction factor Cb (accuracy) value of 0.945. Patterns of bone compaction were qualitatively similar; both experimental and simulated flat-tipped indenters produced dense regions of compacted material adjacent to the advancing face of the indenter, while sharp-tipped indenters deposited compacted material along their peripheries. Simulations based on SPH can produce accurate predictions of trabecular bone penetration that are useful for characterizing implant performance under high-strain loading conditions. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:1114-1123, 2018.
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Affiliation(s)
- Sloan A Kulper
- LKS Faculty of Medicine, Department of Orthopaedics & Traumatology, The University of Hong Kong, China
| | - Christian X Fang
- LKS Faculty of Medicine, Department of Orthopaedics & Traumatology, The University of Hong Kong, China
| | - Xiaodan Ren
- School of Civil Engineering, Tongji University, Shanghai, China
| | - Margaret Guo
- School of Medicine, Stanford University, Menlo Park, California
| | - Kam Y Sze
- Faculty of Engineering, Department of Mechanical Engineering, The University of Hong Kong, China
| | - Frankie K L Leung
- LKS Faculty of Medicine, Department of Orthopaedics & Traumatology, The University of Hong Kong, China
| | - William W Lu
- LKS Faculty of Medicine, Department of Orthopaedics & Traumatology, The University of Hong Kong, China
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37
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Chen Y, Hu Y, Yu YE, Zhang X, Watts T, Zhou B, Wang J, Wang T, Zhao W, Chiu KY, Leung FK, Cao X, Macaulay W, Nishiyama KK, Shane E, Lu WW, Guo XE. Subchondral Trabecular Rod Loss and Plate Thickening in the Development of Osteoarthritis. J Bone Miner Res 2018; 33:316-327. [PMID: 29044705 DOI: 10.1002/jbmr.3313] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Revised: 10/10/2017] [Accepted: 10/14/2017] [Indexed: 12/21/2022]
Abstract
Developing effective treatment for osteoarthritis (OA), a prevalent and disabling disease, has remained a challenge, primarily because of limited understanding of its pathogenesis and late diagnosis. In the subchondral bone, rapid bone loss after traumatic injuries and bone sclerosis at the advanced stage of OA are well-recognized hallmarks of the disease. Recent studies have further demonstrated the crucial contribution of subchondral bone in the development of OA. However, the microstructural basis of these bone changes has not been examined thoroughly, and the paradox of how abnormal resorption can eventually lead to bone sclerosis remains unanswered. By applying a novel microstructural analysis technique, individual trabecula segmentation (ITS), to micro-computed tomography (μCT) images of human OA knees, we have identified a drastic loss of rod-like trabeculae and thickening of plate-like trabeculae that persisted in all regions of the tibial plateau, underneath both severely damaged and still intact cartilage. The simultaneous reduction in trabecular rods and thickening of trabecular plates provide important insights to the dynamic and paradoxical subchondral bone changes observed in OA. Furthermore, using an established guinea pig model of spontaneous OA, we discovered similar trabecular rod loss and plate thickening that preceded cartilage degradation. Thus, our study suggests that rod-and-plate microstructural changes in the subchondral trabecular bone may play an important role in the development of OA and that advanced microstructural analysis techniques such as ITS are necessary in detecting these early but subtle changes. With emerging high-resolution skeletal imaging modalities such as the high-resolution peripheral quantitative computed tomography (HR-pQCT), trabecular rod loss identified by ITS could potentially be used as a marker in assessing the progression of OA in future longitudinal studies or clinical diagnosis. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Yan Chen
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA.,Department of Orthopedics and Traumatology, The University of Hong Kong, Hong Kong.,Department of Bone and Joint Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Yizhong Hu
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Y Eric Yu
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Xingjian Zhang
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Tezita Watts
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Bin Zhou
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Ji Wang
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Ting Wang
- Department of Orthopedics and Traumatology, The University of Hong Kong, Hong Kong
| | - Weiwei Zhao
- Department of Orthopedics and Traumatology, The University of Hong Kong, Hong Kong
| | - Kwong Yuen Chiu
- Department of Orthopedics and Traumatology, The University of Hong Kong, Hong Kong
| | - Frankie Kl Leung
- Department of Orthopedics and Traumatology, The University of Hong Kong, Hong Kong
| | - Xu Cao
- Department of Orthopedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - William Macaulay
- Department of Orthopedic Surgery, New York University Langone/Hospital for Joint Diseases, New York, NY, USA
| | - Kyle K Nishiyama
- Division of Endocrinology, Department of Medicine, Columbia University, New York, NY, USA
| | - Elizabeth Shane
- Division of Endocrinology, Department of Medicine, Columbia University, New York, NY, USA
| | - William W Lu
- Department of Orthopedics and Traumatology, The University of Hong Kong, Hong Kong
| | - X Edward Guo
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
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38
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Huang YC, Xiao J, Leung VY, Lu WW, Hu Y, Luk KDK. Lumbar intervertebral disc allograft transplantation: the revascularisation pattern. Eur Spine J 2017; 27:728-736. [DOI: 10.1007/s00586-017-5419-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 10/24/2017] [Accepted: 11/30/2017] [Indexed: 12/31/2022]
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39
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Chen Y, Huang YC, Yan CH, Chiu KY, Wei Q, Zhao J, Guo XE, Leung F, Lu WW. Abnormal subchondral bone remodeling and its association with articular cartilage degradation in knees of type 2 diabetes patients. Bone Res 2017; 5:17034. [PMID: 29134132 PMCID: PMC5674679 DOI: 10.1038/boneres.2017.34] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 03/28/2017] [Accepted: 04/10/2017] [Indexed: 12/30/2022] Open
Abstract
Type 2 diabetes (T2D) is associated with systemic abnormal bone remodeling and bone loss. Meanwhile, abnormal subchondral bone remodeling induces cartilage degradation, resulting in osteoarthritis (OA). Accordingly, we investigated alterations in subchondral bone remodeling, microstructure and strength in knees from T2D patients and their association with cartilage degradation. Tibial plateaus were collected from knee OA patients undergoing total knee arthroplasty and divided into non-diabetic (n=70) and diabetes (n=51) groups. Tibial plateaus were also collected from cadaver donors (n=20) and used as controls. Subchondral bone microstructure was assessed using micro-computed tomography. Bone strength was evaluated by micro-finite-element analysis. Cartilage degradation was estimated using histology. The expression of tartrate-resistant acidic phosphatase (TRAP), osterix, and osteocalcin were calculated using immunohistochemistry. Osteoarthritis Research Society International (OARSI) scores of lateral tibial plateau did not differ between non-diabetic and diabetes groups, while higher OARSI scores on medial side were detected in diabetes group. Lower bone volume fraction and trabecular number and higher structure model index were found on both sides in diabetes group. These microstructural alterations translated into lower elastic modulus in diabetes group. Moreover, diabetes group had a larger number of TRAP+ osteoclasts and lower number of Osterix+ osteoprogenitors and Osteocalcin+ osteoblasts. T2D knees are characterized by abnormal subchondral bone remodeling and microstructural and mechanical impairments, which were associated with exacerbated cartilage degradation. In regions with intact cartilage the underlying bone still had abnormal remodeling in diabetes group, suggesting that abnormal bone remodeling may contribute to the early pathogenesis of T2D-associated knee OA.
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Affiliation(s)
- Yan Chen
- Department of Bone and Joint Surgery, The First Affiliated Hospital, Guangxi Medical University, China.,Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong
| | - Yong-Can Huang
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong.,Shenzhen Engineering Laboratory of Orthopaedic Regenerative Technologies, Orthopaedic Research Center, Peking University Shenzhen Hospital, Shenzhen, China
| | - Chun Hoi Yan
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong
| | - Kwong Yuen Chiu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong
| | - Qingjun Wei
- Department of Bone and Joint Surgery, The First Affiliated Hospital, Guangxi Medical University, China
| | - Jingmin Zhao
- Department of Bone and Joint Surgery, The First Affiliated Hospital, Guangxi Medical University, China
| | - X Edward Guo
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Frankie Leung
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong
| | - William W Lu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong
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40
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Sun T, Cheung KSC, Liu ZL, Leung F, Lu WW. Matrix metallopeptidase 9 targeted by hsa-miR-494 promotes silybin-inhibited osteosarcoma. Mol Carcinog 2017; 57:262-271. [DOI: 10.1002/mc.22753] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 10/09/2017] [Accepted: 10/23/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Tianhao Sun
- Li Ka Shing Faculty of Medicine; Department of Orthopaedics and Traumatology; The University of Hong Kong; Hong Kong SAR China
| | - Kelvin S. C. Cheung
- Li Ka Shing Faculty of Medicine; Department of Orthopaedics and Traumatology; The University of Hong Kong; Hong Kong SAR China
| | - Zhi-Li Liu
- Department of Orthopedic Surgery; The First Affiliated Hospital of Nanchang University; Nanchang China
| | - Frankie Leung
- Li Ka Shing Faculty of Medicine; Department of Orthopaedics and Traumatology; The University of Hong Kong; Hong Kong SAR China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma; Department of Orthopaedics and Traumatology; The University of Hong Kong-Shenzhen Hospital; Shenzhen China
| | - William W. Lu
- Li Ka Shing Faculty of Medicine; Department of Orthopaedics and Traumatology; The University of Hong Kong; Hong Kong SAR China
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41
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Wang Y, He HY, Li HH, Lu WW, Guo TT, Kong J. The global regulator CodY responds to oxidative stress by the regulation of glutathione biosynthesis in Streptococcus thermophilus. J Dairy Sci 2017; 100:8768-8775. [PMID: 28843694 DOI: 10.3168/jds.2017-13007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 06/17/2017] [Indexed: 11/19/2022]
Abstract
CodYst is a global transcriptional regulator that modulates the metabolic network in Streptococcus thermophilus ST2017. In this study, experimental data showed that the cell survival of the codYst defective mutant obviously declined at the presence of 10 mM H2O2, suggesting CodYst was involved in response to the oxidative stress. To investigate this phenomenon, transcriptome analysis and real time-quantitative PCR were performed and the results indicated that the transcriptional level of a bifunctional glutathione synthetase gene (gshF) was downregulated by about 3-fold in the codYst defective mutant, along with a decrease by 20% of the glutathione yield compared with the wild-type in minimal chemical defined medium, whereas half of the viable cells remained after H2O2 challenge. In vitro gel shift assays showed that the purified CodYst could bind to the promoter region of gshF, with a conserved CodYst box, confirming the regulation of CodYst on the gshF gene. To our knowledge, this is first report of CodYst in response to oxidative stress mediated by the regulation of gshF in S. thermophilus.
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Affiliation(s)
- Y Wang
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100, P. R. China
| | - H Y He
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100, P. R. China
| | - H H Li
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100, P. R. China
| | - W W Lu
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100, P. R. China
| | - T T Guo
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100, P. R. China
| | - J Kong
- State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100, P. R. China.
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42
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Ji LB, Lu ZH, Yao HH, Cao Y, Lu WW, Qian WX, Wang XM, Hu CH. [Application study of qualitatively diagnosing prostate cancer using ultrahigh b-value DWI]. Zhonghua Yi Xue Za Zhi 2017; 97:2107-2110. [PMID: 28763884 DOI: 10.3760/cma.j.issn.0376-2491.2017.27.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: To explore the value of ultrahigh b-value DWI in diagnosis of prostate cancer. Methods: From October 2015 to October 2016, a total of 84 cases from Affiliated Changshu Hospital of Soochow University(39 cases of prostate cancer with a total of 57 lesions, 45 cases of benign prostate hyperplasia) were examined with T(2)WI, high b-value DWI (b=1 000 s/mm(2)) and ultrahigh b-value DWI (b=2 000 s/mm(2)) .Three image sets were rated respectively based on PI-RADS V2 by two radiologists and the scores were compared with biopsy results.The differences of the area under the ROC curve (AUC) among the three groups of each observer were compared by Z test. Results: The difference of AUC between ultrahigh b-value DWI and T(2)WI in the diagnosis of peripheral and transitional zone cancer was statistically significant between the two observers (P=0.009 9, 0.008 2, 0.010 8 and 0.004 5 respectively), and there was no significant difference of AUC between ultrahigh b-value DWI and high b-value DWI in the diagnosis of peripheral and transitional zone cancer.The inter-reader agreement was found to be perfect for all lesions, peripheral zone lesions and transition zone lesions at ultrahigh b-value DWI (kappa values were 0.738, 0.709 and 0.768 respectively). Conclusion: The diagnostic performance of ultrahigh b-value DWI is superior to high b-value DWI and T(2)WI in both peripheral zone and transition zone cancers.
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Affiliation(s)
- L B Ji
- Medical Imaging Center, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
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43
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Cui X, Huang C, Zhang M, Ruan C, Peng S, Li L, Liu W, Wang T, Li B, Huang W, Rahaman MN, Lu WW, Pan H. Enhanced osteointegration of poly(methylmethacrylate) bone cements by incorporating strontium-containing borate bioactive glass. J R Soc Interface 2017; 14:20161057. [PMID: 28615491 PMCID: PMC5493788 DOI: 10.1098/rsif.2016.1057] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 05/23/2017] [Indexed: 11/12/2022] Open
Abstract
Although poly(methylmethacrylate) (PMMA) cements are widely used in orthopaedics, they have numerous drawbacks. This study aimed to improve their bioactivity and osseointegration by incorporating strontium-containing borate bioactive glass (SrBG) as the reinforcement phase and bioactive filler of PMMA cement. The prepared SrBG/PMMA composite cements showed significantly decreased polymerization temperature when compared with PMMA and retained properties of appropriate setting time and high mechanical strength. The bioactivity of SrBG/PMMA composite cements was confirmed in vitro, evidenced by ion release (Ca, P, B and Sr) from SrBG particles. The cellular responses of MC3T3-E1 cells in vitro demonstrated that SrBG incorporation could promote adhesion, migration, proliferation and collagen secretion of cells. Furthermore, our in vivo investigation revealed that SrBG/PMMA composite cements presented better osseointegration than PMMA bone cement. SrBG in the composite cement could stimulate new-bone formation around the interface between the composite cement and host bone at eight and 12 weeks post-implantation, whereas PMMA bone cement only stimulated development of an intervening connective tissue layer. Consequently, the SrBG/PMMA composite cement may be a better alternative to PMMA cement in clinical applications and has promising orthopaedic applications by minimal invasive surgery.
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Affiliation(s)
- Xu Cui
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Chengcheng Huang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Meng Zhang
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Changshun Ruan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Songlin Peng
- Department of Spine Surgery, Shenzhen People's Hospital, Jinan University School of Medicine, Shenzhen 518020, People's Republic of China
| | - Li Li
- The Fourth Affiliated Hospital of Guangxi Medical University/Liu Zhou Worker's Hospital, Liuzhou 545005, People's Republic of China
| | - Wenlong Liu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
| | - Ting Wang
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, Department of Orthopaedics, The University of Hong Kong-Shenzhen Hospital, University of Hong Kong, Shenzhen, People's Republic of China
| | - Bing Li
- The Fourth Affiliated Hospital of Guangxi Medical University/Liu Zhou Worker's Hospital, Liuzhou 545005, People's Republic of China
| | - Wenhai Huang
- Institute of Bioengineering and Information Technology Materials, Tongji University, Shanghai 200092, People's Republic of China
| | - Mohamed N Rahaman
- Department of Materials Science and Engineering, Center for Biomedical Science and Engineering, Missouri University of Science and Technology, Rolla, MO 65409-0340, USA
| | - William W Lu
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Room 907, Lab Block, 21 Sassoon Road, Hong Kong SAR, People's Republic of China
| | - Haobo Pan
- Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, People's Republic of China
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Yang H, Chen L, Zheng Z, Yin G, Lu WW, Wang G, Zhu X, Geng D, Zhou J, Meng B, Mao H, Liu T, Niu J, Tang T, Zou J. Therapeutic effects analysis of percutaneous kyphoplasty for osteoporotic vertebral compression fractures: A multicentre study. J Orthop Translat 2017; 11:73-77. [PMID: 29662771 PMCID: PMC5866398 DOI: 10.1016/j.jot.2017.04.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Revised: 04/23/2017] [Accepted: 04/24/2017] [Indexed: 11/16/2022] Open
Abstract
Background Percutaneous kyphoplasty (PKP), a minimally invasive treatment, has been widely used for osteoporotic vertebral compression fractures (OVCFs). Objective To retrospectively analyse the therapeutic effects of PKP using a series of key techniques in a multicentre study. Methods From May 2000 to December 2016, PKP was performed using a series of key techniques (puncture, reduction, and perfusion techniques) for the treatment of 4532 OVCF patients. The pain visual analog scale (VAS) and the Oswestry Disability Index (ODI) questionnaire prior to the operation, at postoperative Day 2, and at the last follow-up were analysed by paired t-test analysis. The leakage of bone cement was evaluated by postoperative radiography and/or computed tomography. Four-year survival was calculated at the last follow-up. Results The average follow-up was 63 months (1–116 months). The VAS score decreased from 8.9 (preoperative) to 2.3 (2 days postoperative) to 1.9 (last follow-up). The ODI score of the patients decreased from 86.7 (preoperative) to 31.6 (2 days postoperative) to 25.3 (last follow-up). Both VAS score and ODI score improved significantly. The bone cement leakage rate was 3.5%, with no clinical symptoms. The 4-year survival rate was 77.5%. Conclusion This study suggests that PKP with key techniques would be an effective technique to treat OVCF with less risk and better therapeutic effect. Such diagnostic methods and surgical techniques lead to the development and progress of treatment for OVCF. The translational potential of this article: PKP with key techniques would be an effective technique to treat and lead to the development and progress of treatment for OVCF.
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Affiliation(s)
- Huilin Yang
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Liang Chen
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Zhaomin Zheng
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Guoyong Yin
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - William W Lu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, China
| | - Genlin Wang
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Xuesong Zhu
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Dechun Geng
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Jun Zhou
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Bin Meng
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Haiqing Mao
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Tao Liu
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Junjie Niu
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Tiansi Tang
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Jun Zou
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
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Sun T, Li CT, Xiong L, Ning Z, Leung F, Peng S, Lu WW. miR-375-3p negatively regulates osteogenesis by targeting and decreasing the expression levels of LRP5 and β-catenin. PLoS One 2017; 12:e0171281. [PMID: 28158288 PMCID: PMC5291413 DOI: 10.1371/journal.pone.0171281] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Accepted: 01/18/2017] [Indexed: 12/18/2022] Open
Abstract
Wnt signaling pathways are essential for bone formation. Previous studies showed that Wnt signaling pathways were regulated by miR-375. Thus, we aim to explore whether miR-375 could affect osteogenesis. In the present study, we investigated the roles of miR-375 and its downstream targets. Firstly, we revealed that miR-375-3p negatively modulated osteogenesis by suppressing positive regulators of osteogenesis and promoting negative regulators of osteogenesis. In addition, the results of TUNEL cell apoptosis assay showed that miR-375-3p induced MC3T3-E1 cell apoptosis. Secondly, miR-375-3p targeted low-density lipoprotein receptor-related protein 5 (LRP5), a co-receptor of the Wnt signaling pathways, and β-catenin as determined by luciferase activity assay, and it decreased the expression levels of LRP5 and β-catenin. Thirdly, the decline of protein levels of β-catenin was determined by immunocytochemistry and immunofluorescence. Finally, silence of LRP5 in osteoblast precursor cells resulted in diminished cell viability and cell proliferation as detected by WST-1-based colorimetric assay. Additionally, all the parameters including the relative bone volume from μCT measurement suggested that LRP5 knockout in mice resulted in a looser and worse-connected trabeculae. The mRNA levels of important negative modulators relating to osteogenesis increased after the functions of LRP5 were blocked in mice. Last but not least, the expression levels of LRP5 increased during the osteogenesis of MC3T3-E1, while the levels of β-catenin decreased in bone tissues from osteoporotic patients with vertebral compression fractures. In conclusion, we revealed miR-375-3p negatively regulated osteogenesis by targeting LRP5 and β-catenin. In addition, loss of functions of LRP5 damaged bone formation in vivo. Clinically, miR-375-3p and its targets might be used as diagnostic biomarkers for osteoporosis and might be also as novel therapeutic agents in osteoporosis treatment. The relevant products of miR-375-3p might be developed into molecular drugs in the future. These molecules could be used in translational medicine.
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Affiliation(s)
- Tianhao Sun
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
- Department of Spine Surgery, Shenzhen People's Hospital, Jinan University Second College of Medicine, Shenzhen, China
| | - Chen-Tian Li
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Lifeng Xiong
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Ziyu Ning
- Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Frankie Leung
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Songlin Peng
- Department of Spine Surgery, Shenzhen People's Hospital, Jinan University Second College of Medicine, Shenzhen, China
| | - William W. Lu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
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Huang T, Liu R, Fu X, Yao D, Yang M, Liu Q, Lu WW, Wu C, Guan M. Aging Reduces an ERRalpha-Directed Mitochondrial Glutaminase Expression Suppressing Glutamine Anaplerosis and Osteogenic Differentiation of Mesenchymal Stem Cells. Stem Cells 2017; 35:411-424. [PMID: 27501743 DOI: 10.1002/stem.2470] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 07/07/2016] [Accepted: 07/25/2016] [Indexed: 12/19/2022]
Abstract
Aging deteriorates osteogenic capacity of mesenchymal stem/stromal cells (MSCs), contributing to imbalanced bone remodeling and osteoporosis. Glutaminase (Gls) catabolizes glutamine into glutamate at the first step of mitochondrial glutamine (Gln)-dependent anaplerosis which is essential for MSCs upon osteogenic differentiation. Estrogen-related receptor α (ERRα) regulates genes required for mitochondrial function. Here, we found that ERRα and Gls are upregulated by osteogenic induction in human MSCs (hMSCs). In contrast, osteogenic differentiation capacity and glutamine consumption of MSCs, as well as ERRα, Gls and osteogenic marker genes are significantly reduced with age. We demonstrated that ERRα binds to response elements on Gls promoter and affects glutamine anaplerosis through transcriptional induction of Gls. Conversely, mTOR inhibitor rapamycin, ERRα inverse agonist compound 29 or Gls inhibitor BPTES leads to reduced Gln anaplerosis and deteriorated osteogenic differentiation of hMSCs. Importantly, overexpression of ERRα or Gls restored impairment by these inhibitors. Finally, we proved that compensated ERRα or Gls expression indeed potentiated Gln anaplerosis and osteogenic capability of elderly mice MSCs in vitro. Together, we establish that Gls is a novel ERRα target gene and ERRα/Gls signaling pathway plays an important role in osteogenic differentiation of MSCs, providing new sights into novel regenerative therapeutics development. Our findings suggest that restoring age-related mitochondrial Gln-dependent anaplerosis may be beneficial for degenerative bone disorders such as osteoporosis. Stem Cells 2017;35:411-424.
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Affiliation(s)
- Tongling Huang
- National Engineering Research Center of Genetic Medicine, Institute of Biomedicine, Jinan University, Guangzhou, Guangdong, China
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
| | - Renzhong Liu
- National Engineering Research Center of Genetic Medicine, Institute of Biomedicine, Jinan University, Guangzhou, Guangdong, China
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
| | - Xuekun Fu
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
| | - Dongsheng Yao
- National Engineering Research Center of Genetic Medicine, Institute of Biomedicine, Jinan University, Guangzhou, Guangdong, China
| | - Meng Yang
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
| | - Qingli Liu
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
| | - William W Lu
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong, China
| | - Chuanyue Wu
- Department of Biology and Shenzhen Key Laboratory of Cell Microenvironment, South University of Science and Technology of China, Shenzhen, China
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Min Guan
- Center for Human Tissues and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, China
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Chen Q, Liu Y, Wang T, Wu J, Zhai X, Li Y, Lu WW, Pan H, Zhao X. Chitosan–PVA monodisperse millimeter-sized spheres prepared by electrospraying reduce the thromboembolic risk in hemorrhage control. J Mater Chem B 2017; 5:3686-3696. [DOI: 10.1039/c7tb00032d] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chitosan–PVA monodisperse millimeter-sized spheres are efficient in hemorrhage control and also reduce the risk of thromboembolic complication.
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Affiliation(s)
- Qingchang Chen
- Research Center for Human Tissues and Organs Degeneration
- Institute of Biomedicine and Biotechnology
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen
| | - Yuan Liu
- Research Center for Human Tissues and Organs Degeneration
- Institute of Biomedicine and Biotechnology
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen
| | - Ting Wang
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma
- The University of Hong Kong-Shenzhen Hospital
- Shenzhen
- P. R. China
| | - Jun Wu
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma
- The University of Hong Kong-Shenzhen Hospital
- Shenzhen
- P. R. China
| | - Xinyun Zhai
- Research Center for Human Tissues and Organs Degeneration
- Institute of Biomedicine and Biotechnology
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen
| | - Yanqun Li
- Research Center for Human Tissues and Organs Degeneration
- Institute of Biomedicine and Biotechnology
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen
| | - William W. Lu
- Department of Orthopaedic and Traumatology
- The University of Hong Kong
- Pokfulam
- P. R. China
| | - Haobo Pan
- Research Center for Human Tissues and Organs Degeneration
- Institute of Biomedicine and Biotechnology
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen
| | - Xiaoli Zhao
- Research Center for Human Tissues and Organs Degeneration
- Institute of Biomedicine and Biotechnology
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
- Shenzhen
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Liu W, Wang T, Zhao X, Dan X, Lu WW, Pan H. Akermanite used as an alkaline biodegradable implants for the treatment of osteoporotic bone defect. Bioact Mater 2016; 1:151-159. [PMID: 29744404 PMCID: PMC5883956 DOI: 10.1016/j.bioactmat.2016.11.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Revised: 11/16/2016] [Accepted: 11/16/2016] [Indexed: 12/24/2022] Open
Abstract
In osteoporosis scenario, tissue response to implants is greatly impaired by the deteriorated bone regeneration microenvironment. In the present study, a Mg-containing akermanite (Ak) ceramic was employed for the treatment of osteoporotic bone defect, based on the hypothesis that both beneficial ions (e.g. Mg2+ect.) released by the implants and the weak alkaline microenvironment pH (μe-pH) it created may play distinct roles in recovering the abnormal bone regeneration by stimulating osteoblastic anabolic effects. The performance of Ak, β-tricalcium phosphate (β-TCP) and Hardystone (Har) in healing a 3 mm bone defect on the ovariectomized (OVX) osteoporotic rat model was evaluated. Our results indicated that, there's more new bone formed in Ak group than in β-TCP or Har group at week 9. The initial μe-pHs of Ak were significantly higher than that of the β-TCP and Blank group, and this weak alkaline condition was maintained till at least 9 weeks post-surgery. Increased osteoblastic activity which was indicated by higher osteoid secretion was observed in Ak group at week 4 to week 9. An intermediate layer which was rich in phosphorus minerals and bound directly to the new forming bone was developed on the surface of Ak. In a summary, our study demonstrates that Ak exhibits a superior bone regenerative performance under osteoporosis condition, and might be a promising candidate for the treatment of osteoporotic bone defect and fracture.
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Affiliation(s)
- Wenlong Liu
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Ting Wang
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, Department of Orthopaedics, The University of Hong Kong-Shenzhen Hospital, University of Hong Kong, Shenzhen, China
| | - Xiaoli Zhao
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Xiuli Dan
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - William W. Lu
- Department of Orthopaedics and Traumatology, Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Haobo Pan
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
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49
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Liu W, Dan X, Wang T, Lu WW, Pan H. A Bone–Implant Interaction Mouse Model for Evaluating Molecular Mechanism of Biomaterials/Bone Interaction. Tissue Eng Part C Methods 2016; 22:1018-1027. [DOI: 10.1089/ten.tec.2016.0250] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- Wenlong Liu
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- Department of Orthopedics and Traumatology, Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Xiuli Dan
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Ting Wang
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- Shenzhen Key Laboratory for Innovative Technology in Orthopedic Trauma, Department of Orthopedics and Traumatology, The University of Hong Kong-Shenzhen Hospital, University of Hong Kong, Shenzhen, China
| | - William W. Lu
- Department of Orthopedics and Traumatology, Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Haobo Pan
- Research Center for Human Tissue and Organs Degeneration, Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
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Huang YC, Xiao J, Leung WY, Lu WW, Hu Y, Luk KD. The dorsal skinfold chamber: A versatile tool for preclinical research in tissue engineering and regenerative medicine. Eur Cell Mater 2016; 32:216-227. [PMID: 27759878 DOI: 10.22203/ecm.v032a14] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Previous human study suggested that fresh-frozen intervertebral disc allograft transplantation can relieve neurological symptoms and restore segmental kinematics. Before wide clinical application, research into the pathophysiology of the postoperative disc allograft is needed. One important question that remains to be answered in disc allografting is the healing process of the host-graft interface and the subsequent change of the endplates. With the goat model for lumbar disc allografting, histology, micro-computed tomography analysis, scanning electron microscopy and energy-dispersive X-ray spectroscopy mapping were applied to evaluate the healing of the host-graft interfaces, the remodelling of subchondral bone, and the changes of the bony and cartilaginous endplates after transplantation. It was found that healing of the host-graft interfaces started at 1.5 months and was completed at 6 months by natural remodelling. This bony remodelling was also noted in the subchondral bone area after 6 months. The bony endplate was well preserved initially, but was gradually replaced by trabecular bone afterwards; on the other hand, the cartilaginous endplate became atrophic at 6 months and nearly disappeared at the final follow-up. Collectively, after intervertebral disc allograft transplantation, bony healing and remodelling were seen which ensured the stability and mobility of the disc-transplanted segment, but the integrity of bony and cartilaginous endplates was gradually lost and nearly disappeared finally.
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Affiliation(s)
- Y-C Huang
- Department of Orthopaedics and Traumatology, The University of Hong Kong, 5/F Professor Block, Queen Mary Hospital, Pokfulam, Hong Kong SAR,
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