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Zhu D, Chen S, Sheng P, Wang Z, Li Y, Kang X. POSTN promotes nucleus pulposus cell senescence and extracellular matrix metabolism via activing Wnt/β-catenin and NF-κB signal pathway in intervertebral disc degeneration. Cell Signal 2024; 121:111277. [PMID: 38944256 DOI: 10.1016/j.cellsig.2024.111277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 06/06/2024] [Accepted: 06/25/2024] [Indexed: 07/01/2024]
Abstract
BACKGROUND Intervertebral disc (IVD) degeneration (IVDD) is a prevalent condition contributing to back pain and disability. Periostin (POSTN) has emerged as a potential molecular marker and therapeutic target in IVDD, prompting further investigation into its role and mechanisms. METHODS This study employs bioinformatics analysis combined with experimental validation to explore the role of POSTN in IVDD. Gene expression datasets from the GEO database were analyzed to identify genes associated with IVDD, and the effects of POSTN on rat nucleus pulposus (NP) cells senescence and extracellular matrix (ECM) metabolism were assessed both in vitro and in vivo. RESULTS Elevated POSTN expression was observed in degenerated discs from IVDD patients, correlating with disease severity. In vitro experiments demonstrated that POSTN promotes NP cells senescence and ECM metabolism in a dose- and time-dependent manner. In vivo studies confirmed that POSTN inhibition can ameliorate the progression of IVDD. Further mechanistic insights revealed that POSTN may exert its effects by activating the NF-κB and Wnt/β-catenin signaling pathways. CONCLUSION POSTN plays a significant role in the pathogenesis of IVDD, with its upregulated expression closely linked to NP cells senescence and ECM metabolism. Targeting POSTN could offer a novel therapeutic strategy for IVDD. Additionally, the study predicts small molecules that may inhibit POSTN expression, providing potential candidates for the development of new drug treatments.
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Affiliation(s)
- Daxue Zhu
- Lanzhou University Second Hospital, 82 Cuiyingmen, Lanzhou 730030, PR China; Orthopaedics Key Laboratory of Gansu Province, Lanzhou 730030, PR China
| | - Shijie Chen
- Lanzhou University Second Hospital, 82 Cuiyingmen, Lanzhou 730030, PR China; Orthopaedics Key Laboratory of Gansu Province, Lanzhou 730030, PR China
| | - Pan Sheng
- The 947th Hospital of the People's Liberation Army Ground Force of Xinjiang Uygur Autonomous Region, Kashgar, PR China
| | - Zhaoheng Wang
- Lanzhou University Second Hospital, 82 Cuiyingmen, Lanzhou 730030, PR China; Orthopaedics Key Laboratory of Gansu Province, Lanzhou 730030, PR China
| | - Yanhu Li
- Lanzhou University Second Hospital, 82 Cuiyingmen, Lanzhou 730030, PR China; Orthopaedics Key Laboratory of Gansu Province, Lanzhou 730030, PR China
| | - Xuewen Kang
- Lanzhou University Second Hospital, 82 Cuiyingmen, Lanzhou 730030, PR China; Orthopaedics Key Laboratory of Gansu Province, Lanzhou 730030, PR China.
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2
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Shen J, Lan Y, Ji Z, Liu H. Sirtuins in intervertebral disc degeneration: current understanding. Mol Med 2024; 30:44. [PMID: 38553713 PMCID: PMC10981339 DOI: 10.1186/s10020-024-00811-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 03/20/2024] [Indexed: 04/01/2024] Open
Abstract
BACKGROUND Intervertebral disc degeneration (IVDD) is one of the etiologic factors of degenerative spinal diseases, which can lead to a variety of pathological spinal conditions such as disc herniation, spinal stenosis, and scoliosis. IVDD is a leading cause of lower back pain, the prevalence of which increases with age. Recently, Sirtuins/SIRTs and their related activators have received attention for their activity in the treatment of IVDD. In this paper, a comprehensive systematic review of the literature on the role of SIRTs and their activators on IVDD in recent years is presented. The molecular pathways involved in the regulation of IVDD by SIRTs are summarized, and the effects of SIRTs on senescence, inflammatory responses, oxidative stress, and mitochondrial dysfunction in myeloid cells are discussed with a view to suggesting possible solutions for the current treatment of IVDD. PURPOSE This paper focuses on the molecular mechanisms by which SIRTs and their activators act on IVDD. METHODS A literature search was conducted in Pubmed and Web of Science databases over a 13-year period from 2011 to 2024 for the terms "SIRT", "Sirtuin", "IVDD", "IDD", "IVD", "NP", "Intervertebral disc degeneration", "Intervertebral disc" and "Nucleus pulposus". RESULTS According to the results, SIRTs and a large number of activators showed positive effects against IVDD.SIRTs modulate autophagy, myeloid apoptosis, oxidative stress and extracellular matrix degradation. In addition, they attenuate inflammatory factor-induced disc damage and maintain homeostasis during disc degeneration. Several clinical studies have reported the protective effects of some SIRTs activators (e.g., resveratrol, melatonin, honokiol, and 1,4-dihydropyridine) against IVDD. CONCLUSION The fact that SIRTs and their activators play a hundred different roles in IVDD helps to better understand their potential to develop further treatments for IVDD. NOVELTY This review summarizes current information on the mechanisms of action of SIRTs in IVDD and the challenges and limitations of translating their basic research into therapy.
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Affiliation(s)
- Jianlin Shen
- Department of Orthopaedics, Affiliated Hospital of Putian University, Putian, 351100, Fujian, China
- Central Laboratory, Affiliated Hospital of Putian University, Putian, 351100, Fujian, China
| | - Yujian Lan
- School of Integrated Traditional Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Ziyu Ji
- School of Integrated Traditional Chinese and Western Medicine, Southwest Medical University, Luzhou, 646000, Sichuan, China.
| | - Huan Liu
- Department of Orthopaedics, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, 646000, Sichuan, China.
- The Third People's Hospital of Longmatan District, Luzhou, 646000, Sichuan, China.
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3
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Lazaro-Pacheco D, Mohseni M, Rudd S, Cooper-White J, Holsgrove TP. The role of biomechanical factors in models of intervertebral disc degeneration across multiple length scales. APL Bioeng 2023; 7:021501. [PMID: 37180733 PMCID: PMC10168717 DOI: 10.1063/5.0137698] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 04/24/2023] [Indexed: 05/16/2023] Open
Abstract
Low back pain is the leading cause of disability, producing a substantial socio-economic burden on healthcare systems worldwide. Intervertebral disc (IVD) degeneration is a primary cause of lower back pain, and while regenerative therapies aimed at full functional recovery of the disc have been developed in recent years, no commercially available, approved devices or therapies for the regeneration of the IVD currently exist. In the development of these new approaches, numerous models for mechanical stimulation and preclinical assessment, including in vitro cell studies using microfluidics, ex vivo organ studies coupled with bioreactors and mechanical testing rigs, and in vivo testing in a variety of large and small animals, have emerged. These approaches have provided different capabilities, certainly improving the preclinical evaluation of these regenerative therapies, but challenges within the research environment, and compromises relating to non-representative mechanical stimulation and unrealistic test conditions, remain to be resolved. In this review, insights into the ideal characteristics of a disc model for the testing of IVD regenerative approaches are first assessed. Key learnings from in vivo, ex vivo, and in vitro IVD models under mechanical loading stimulation to date are presented alongside the merits and limitations of each model based on the physiological resemblance to the human IVD environment (biological and mechanical) as well as the possible feedback and output measurements for each approach. When moving from simplified in vitro models to ex vivo and in vivo approaches, the complexity increases resulting in less controllable models but providing a better representation of the physiological environment. Although cost, time, and ethical constraints are dependent on each approach, they escalate with the model complexity. These constraints are discussed and weighted as part of the characteristics of each model.
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Affiliation(s)
- Daniela Lazaro-Pacheco
- Department of Engineering, University of Exeter, Harrison Building, Streatham Campus, North Park Road, Exeter EX4 4QF, United Kingdom
| | - Mina Mohseni
- School of Chemical Engineering, The University of Queensland, St. Lucia QLD 4072, Australia
| | - Samuel Rudd
- School of Chemical Engineering, The University of Queensland, St. Lucia QLD 4072, Australia
| | | | - Timothy Patrick Holsgrove
- Department of Engineering, University of Exeter, Harrison Building, Streatham Campus, North Park Road, Exeter EX4 4QF, United Kingdom
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4
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Li J, Chen Y, Wu H, Shan Z, Bei D, Gan K, Liu J, Zhang X, Chen B, Chen J, Zhao FD. Different responses of cervical intervertebral disc caused by low and high virulence bacterial infection: a comparative study in rats. Bioengineered 2022; 13:12446-12461. [PMID: 35587595 PMCID: PMC9275948 DOI: 10.1080/21655979.2022.2075305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The aims of this study were to investigate the outcomes of low- and high-virulence bacterial cervical intervertebral discs (IVDs) infection and its association with cervical IVDs degeneration in rats. A total of 75 clean grade male rats were used to establish the corresponding animal models of low and high virulent bacterial cervical disc infection via an anterior cervical approach, with injection of Propionibacterium acnes (P. acnes) and Staphylococcus epidermidis (S. epidermidis) with a 29 G needle to cervical IVDs. Specimens were collected for evaluation of Blood routine (Blood-RT), histological staining, and gene expression assays after a magnetic resonance imaging (MRI) scan. There were no statistical differences in all groups in white blood cells (WBC) at 2 and 6 weeks postoperatively (P = 0.136). The highest percentage of neutrophils was found in the S. epidermidis group at 2 weeks postoperatively (P = 0.043). MRI and histology showed that at 6 weeks postoperatively, the puncture group and P. acnes group had similar disc degeneration. In the S. epidermidis group, the disc and subchondral bone structure had been destroyed and bony fusion had occurred after the discitis. The upregulation of pro-inflammatory factor expression had the strongest effect of S. epidermidis on the early stage, while the upregulation in the puncture and P. acnes groups was more persistent. P. acnes infection of the cervical IVDs can lead to degenerative changes, whereas S. epidermidis infection leads to the manifestation of septic discitis. The correlation between P. acnes infection and cervical IVDs degeneration found in clinical studies was confirmed.
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Affiliation(s)
- Jie Li
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, China.,Department of Orthopaedic Surgery, Ningbo Medical Center Li Huili Hospital, Ningbo, Zhejiang, China
| | - Yilei Chen
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Hao Wu
- Department of Orthopaedics and Traumatology, the University of Hong Kong, Hong Kong, SAR, China
| | - Zhi Shan
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Dikai Bei
- Department of Orthopaedic Surgery, Ningbo Medical Center Li Huili Hospital, Ningbo, Zhejiang, China
| | - Kaifeng Gan
- Department of Orthopaedic Surgery, Ningbo Medical Center Li Huili Hospital, Ningbo, Zhejiang, China
| | - Junhui Liu
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Xuyang Zhang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Binhui Chen
- Department of Orthopaedic Surgery, Ningbo Medical Center Li Huili Hospital, Ningbo, Zhejiang, China
| | - Jian Chen
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Feng-Dong Zhao
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, Zhejiang, China
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5
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ISSLS Prize in Bioengineering Science 2022: low rate cyclic loading as a therapeutic strategy for intervertebral disc regeneration. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2022; 31:1088-1098. [PMID: 35524071 DOI: 10.1007/s00586-022-07239-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 03/29/2022] [Accepted: 04/19/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND The intervertebral disc degenerates with age and has a poor propensity for regeneration. Small molecule transport plays a key role in long-term degradation and repair. Convection (bulk flow), induced by low rate cyclic loading of the intervertebral disc, has been shown to increase transport of small molecules. However, the potential therapeutic benefit of low rate cyclic loading on degenerated discs has not been described. The purpose of this study was to determine if a sustained (daily) low rate cyclic loading regimen could slow, arrest, or reverse intervertebral disc degeneration in the rabbit lumbar spine. METHODS Fifty-six New Zealand white rabbits (>12 months old) were designated as either Control (no disc puncture), 8D (disc puncture followed by 8 weeks of degeneration), 16D (disc puncture followed by 16 weeks of degeneration), or Therapy (disc puncture followed by 8 weeks of degeneration and then 8 weeks of daily low rate cyclic loading). Specimens were evaluated by T2 mapping, Pfirrmann scale grading, nucleus volume, disc height index, disc morphology and structure, and proteoglycan content. RESULTS In every metric, mean values for the Therapy group fell between Controls and 8D animals. These results suggest that sustained low rate cyclic loading had a therapeutic effect on the already degenerated disc and the regimen promoted signs of regeneration. If these results translate clinically, this approach could fulfil a significant clinical need by providing a means of non-invasively treating intervertebral disc degeneration.
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Yang X, Wei X, Yu K, Wan C, Wang Y, Huang S, Sun Q, Huang J. Identification of myocardial fibrosis by ATR-FTIR spectroscopy combined with chemometrics. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 264:120238. [PMID: 34384995 DOI: 10.1016/j.saa.2021.120238] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 05/12/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
Different degrees of myocardial fibrosis can often be observed in sudden cardiac death cases, so that the identification of myocardial fibrosis is an important step in forensics to identify cardiac death. Previous methods are restricted by complex algorithms, high cost, low sensitivity and high requirements. Attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy is an efficient and rapid method to identify tissue types, which has been used increasingly in forensics. This study aims to identify novel biophysical biomarkers of myocardial fibrosis and establish a prediction model by using ATR-FTIR analysis combined with chemometrics. A total of 129 tissue blocks taken from human hearts were cut into slices, and then ATR-FTIR spectroscopy and hematoxylin and eosin (HE) staining were performed. By using HE staining, the samples were divided into the experimental group (with myocardial fibrosis) and the control group (without myocardial fibrosis). The chemometrics classification results showed that the sensitivity and specificity of the training dataset were 0.91 and 1.0 respectively, and the sensitivity and specificity of the predictive dataset were 0.862 and 0.900. This study demonstrated that ATR-FTIR spectroscopy combined with chemometrics is a novel method for identifying myocardial fibrosis.
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Affiliation(s)
- Xiaorong Yang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, 550025, PR China
| | - Xin Wei
- College of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, PR China
| | - Kai Yu
- College of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, PR China
| | - Changwu Wan
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, 550025, PR China
| | - Yuanhe Wang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, 550025, PR China
| | - Shimei Huang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, 550025, PR China
| | - Qinru Sun
- College of Medicine & Forensics, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi 710061, PR China.
| | - Jiang Huang
- Department of Forensic Medicine, Guizhou Medical University, Guiyang, Guizhou, 550025, PR China.
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7
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Peng Y, Lin H, Tian S, Liu S, Li J, Lv X, Chen S, Zhao L, Pu F, Chen X, Shu H, Qing X, Shao Z. Glucagon-like peptide-1 receptor activation maintains extracellular matrix integrity by inhibiting the activity of mitogen-activated protein kinases and activator protein-1. Free Radic Biol Med 2021; 177:247-259. [PMID: 34737144 DOI: 10.1016/j.freeradbiomed.2021.10.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/04/2021] [Accepted: 10/27/2021] [Indexed: 12/25/2022]
Abstract
Disruption of the intervertebral disc extracellular matrix (ECM) is a hallmark of intervertebral disc degeneration (IDD), which is largely attributed to excessive oxidative stress. However, there is a lack of clinically feasible approaches to promote the reconstruction of the disc ECM. Glucagon-like peptide-1 (GLP-1), a safe polypeptide hormone adopted to treat type 2 diabetes mellitus, has shown great potential for relieving oxidative stress-related damage. To our knowledge, this is the first study to reveal that exenatide, a GLP-1 receptor (GLP-1R) agonist, can upregulate disc ECM synthesis and attenuate oxidative stress-induced ECM degradation and IDD. Mechanistically, we found that exenatide inhibited the activation of mitogen-activated protein kinases (MAPK) signaling pathway and the formation of BATF/JUNs heterodimers (an index of activator protein-1 (AP-1) activity). The restoration of MAPK signaling activation reversed the protective effects of exenatide and enhanced downstream BATF/JUNs binding. BATF overexpression was also found to aggravate disc ECM damage, even in the presence of exenatide. In summary, exenatide is an effective agent that regulates ECM anabolic balance and restores disc degeneration by inhibiting MAPK activation and its downstream AP-1 activity. The present study provides a therapeutic rationale for activating the GLP-1 receptor against IDD and establishes the important role of AP-1 activity in the pathogenesis of IDD.
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Affiliation(s)
- Yizhong Peng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hui Lin
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Shuo Tian
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Sheng Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jinye Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiao Lv
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Songfeng Chen
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou City, 450052, China
| | - Lei Zhao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Feifei Pu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xi Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Hongyang Shu
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430000, China; Hubei Key Laboratory of Genetics and Molecular Mechanism of Cardiologic Disorders, Huazhong University of Science and Technology, Wuhan, 430000, China
| | - Xiangcheng Qing
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Zengwu Shao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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8
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Zhu D, Zhou W, Wang Z, Wang Y, Liu M, Zhang G, Guo X, Kang X. Periostin: An Emerging Molecule With a Potential Role in Spinal Degenerative Diseases. Front Med (Lausanne) 2021; 8:694800. [PMID: 34513869 PMCID: PMC8430223 DOI: 10.3389/fmed.2021.694800] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/23/2021] [Indexed: 12/22/2022] Open
Abstract
Periostin, an extracellular matrix protein, is widely expressed in a variety of tissues and cells. It has many biological functions and is related to many diseases: for example, it promotes cell proliferation and differentiation in osteoblasts, which are closely related to osteoporosis, and mediates cell senescence and apoptosis in chondrocytes, which are involved in osteoarthritis. Furthermore, it also plays an important role in mediating inflammation and reconstruction during bronchial asthma, as well as in promoting bone development, reconstruction, repair, and strength. Therefore, periostin has been explored as a potential biomarker for various diseases. Recently, periostin has also been found to be expressed in intervertebral disc cells as a component of the intervertebral extracellular matrix, and to play a crucial role in the maintenance and degeneration of intervertebral discs. This article reviews the biological role of periostin in bone marrow-derived mesenchymal stem cells, osteoblasts, osteoclasts, chondrocytes, and annulus fibrosus and nucleus pulposus cells, which are closely related to spinal degenerative diseases. The study of its pathophysiological effects is of great significance for the diagnosis and treatment of spinal degeneration, although additional studies are needed.
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Affiliation(s)
- Daxue Zhu
- Lanzhou University Second Hospital, Lanzhou, China.,Orthopaedics Key Laboratory of Gansu Province, Lanzhou, China
| | - Wupin Zhou
- The 947th Army Hospital of the Chinese PLA, Kashgar, China
| | - Zhen Wang
- People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, China
| | - Yidian Wang
- Lanzhou University Second Hospital, Lanzhou, China.,Orthopaedics Key Laboratory of Gansu Province, Lanzhou, China
| | - Mingqiang Liu
- Lanzhou University Second Hospital, Lanzhou, China.,Orthopaedics Key Laboratory of Gansu Province, Lanzhou, China
| | - Guangzhi Zhang
- Lanzhou University Second Hospital, Lanzhou, China.,Orthopaedics Key Laboratory of Gansu Province, Lanzhou, China
| | - Xudong Guo
- Lanzhou University Second Hospital, Lanzhou, China.,Orthopaedics Key Laboratory of Gansu Province, Lanzhou, China
| | - Xuewen Kang
- Lanzhou University Second Hospital, Lanzhou, China.,Orthopaedics Key Laboratory of Gansu Province, Lanzhou, China
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9
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Rasoulian A, Vakili-Tahami F, Smit TH. Linear and Nonlinear Biphasic Mechanical Properties of Goat IVDs Under Different Swelling Conditions in Confined Compression. Ann Biomed Eng 2021; 49:3296-3309. [PMID: 34480262 DOI: 10.1007/s10439-021-02856-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 08/18/2021] [Indexed: 11/25/2022]
Abstract
To define technical specifications for artificial substitutes, it is necessary to model their mechanical behaviour. Here we studied the linear and nonlinear biphasic models for Nucleus Pulposus (NP) and Annulus Fibrosus (AF). The associated material parameters were obtained using confined compression stress relaxation tests on goat intervertebral disc (IVD) samples. The first parameter, aggregate modulus HA0, which essentially describes load-bearing capacity of the solid phase, was larger for AF (HA0 = 0.53 ± 0.06 MPa) than for NP (HA0 = 0.26 ± 0.04 MPa). For hydraulic permeability, which quantifies the ability to transmit interstitial fluid, it was the opposite (k0 = (0.20 ± 0.07) × 10-15 m4/Ns for AF and k0 = (0.67 ± 0.08)×10-15 m4/Ns for NP). The values of nonlinearity coefficients, nonlinear stiffening coefficient β and non-dimensional nonlinear permeability coefficient M, reflected that these tissues had nonlinear elastic behaviour and permeability. Also, investigating the effect of swelling conditions in sample preparation showed that for both AF and NP, confined-swollen samples had higher aggregate modulus and lower permeability values compared to the free-swollen ones. The quantitative description of the nonlinear properties of AF and NP provided a better understanding of IVD behaviour as well as technical specifications for their artificial substitutes.
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Affiliation(s)
- Akbar Rasoulian
- Department of Mechanical Engineering, University of Tabriz, 29 Bahman Blvd., 5166616471, Tabriz, Iran.,Department of Orthopedic Surgery, Amsterdam Movement Sciences, Amsterdam UMC, University of Amsterdam, De Boelelaan 1117, Amsterdam, 1081 HV, The Netherlands
| | - Farid Vakili-Tahami
- Department of Mechanical Engineering, University of Tabriz, 29 Bahman Blvd., 5166616471, Tabriz, Iran.
| | - Theodoor H Smit
- Department of Orthopedic Surgery, Amsterdam Movement Sciences, Amsterdam UMC, University of Amsterdam, De Boelelaan 1117, Amsterdam, 1081 HV, The Netherlands.,Department of Medical Biology, Amsterdam Movement Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, Amsterdam, 1085 AZ, The Netherlands
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10
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Levillain A, Ahmed S, Kaimaki DM, Schuler S, Barros S, Labonte D, Iatridis J, Nowlan N. Prenatal muscle forces are necessary for vertebral segmentation and disc structure, but not for notochord involution in mice. Eur Cell Mater 2021; 41:558-575. [PMID: 34021906 PMCID: PMC8268087 DOI: 10.22203/ecm.v041a36] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Embryonic muscle forces are necessary for normal vertebral development and spinal curvature, but their involvement in intervertebral disc (IVD) development remains unclear. The aim of the current study was to determine how muscle contractions affect (1) notochord involution and vertebral segmentation, and (2) IVD development including the mechanical properties and morphology, as well as collagen fibre alignment in the annulus fibrosus. Muscular dysgenesis (mdg) mice were harvested at three prenatal stages: at Theiler Stage (TS)22 when notochord involution starts, at TS24 when involution is complete, and at TS27 when the IVD is formed. Vertebral and IVD development were characterised using histology, immunofluorescence, and indentation testing. The results revealed that notochord involution and vertebral segmentation occurred independently of muscle contractions between TS22 and TS24. However, in the absence of muscle contractions, we found vertebral fusion in the cervical region at TS27, along with (i) a displacement of the nucleus pulposus towards the dorsal side, (ii) a disruption of the structural arrangement of collagen in the annulus fibrosus, and (iii) an increase in viscous behaviour of the annulus fibrosus. These findings emphasise the important role of mechanical forces during IVD development, and demonstrate a critical role of muscle loading during development to enable proper annulus fibrosus formation. They further suggest a need for mechanical loading in the creation of fibre-reinforced tissue engineering replacement IVDs as a therapy for IVD degeneration.
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Affiliation(s)
- A. Levillain
- Department of Bioengineering, Imperial College London, London, UK,Université de Lyon, Université Claude Bernard Lyon 1, INSERM, LYOS UMR 1033, Lyon, France
| | - S. Ahmed
- Department of Bioengineering, Imperial College London, London, UK
| | - D-M. Kaimaki
- Department of Bioengineering, Imperial College London, London, UK
| | - S. Schuler
- Department of Bioengineering, Imperial College London, London, UK
| | - S. Barros
- Department of Bioengineering, Imperial College London, London, UK
| | - D. Labonte
- Department of Bioengineering, Imperial College London, London, UK
| | - J.C. Iatridis
- Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - N.C. Nowlan
- Department of Bioengineering, Imperial College London, London, UK,School of Mechanical and Materials Engineering, University College Dublin, Dublin, Ireland,UCD Conway Institute, University College Dublin, Dublin, Ireland,Address for correspondence: Niamh C. Nowlan, Department of Bioengineering, Imperial College London, London SW72AZ, UK. Telephone number: +44 2075945189
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Age-dependent microstructural changes of the intervertebral disc: a validation of proteoglycan-sensitive spectral CT. Eur Radiol 2021; 31:9390-9398. [PMID: 33993329 PMCID: PMC8589800 DOI: 10.1007/s00330-021-08028-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 03/23/2021] [Accepted: 04/29/2021] [Indexed: 11/27/2022]
Abstract
Objective To analyze the two major components of the intervertebral disc (IVD) in an ex vivo phantom, as well as age-related changes in patients. Methods Collagen and chondroitin sulfate were imaged at different concentrations in agar solution. Age-related changes in disc density were retrospectively analyzed in normal-appearing discs in dual-energy computed tomography (DECT) images from a patient cohort with various spinal pathologies (n = 136). All computed tomography (CT) scans were acquired using single-source DECT at 80 and 135 kVp with automatic exposure calculation. In 136 patients, the attenuation of normal-appearing discs on collagen/chondroitin maps (cMaps) correlated with the patients’ age with Pearson’s r using standardized regions of interest in the anterior anulus fibrosus (AAF) and nucleus pulposus (NP). Results DECT collagen mapping revealed concentration-dependent Hounsfield units (HU) of IVD components. For collagen, we found Pearson’s r = 0.9610 (95% CI 0.6789–0.9959), p = 0.0023 at 120 kVe, and r = 0.8824 (95% CI 0.2495–0.9871), p = 0.0199 in cMap. For chondroitin sulfate, Pearson’s r was 0.9583 (95% CI 0.6603–0.9956), p = 0.0026 at 120 kVp, and r = 0.9646 (95% CI 0.7044–0.9963), p = 0.0019 in cMap. Analysis of normal-appearing IVDs revealed an inverse correlation of density with age in the AAF: Pearson’s r = − 0.2294 at 135 kVp (95% CI − 0.4012 to − 0.04203; p=0.0141) and r = − 0.09341 in cMap (95% CI − 0.2777 to 0.09754; p = 0.0003). In the NP, age and density did not correlate significantly at 135 kVp (p = 0.9228) and in cMap (p = 0.3229). Conclusions DECT-based collagen mapping allows microstructural analysis of the two main intervertebral disc components—collagen and chondroitin sulfate. IVD density declines with age, presumably due to a reduction in collagen and chondroitin sulfate content. Age-related alterations of disc microstructure appear most pronounced in the AAF. Key Points • DECT-based collagen mapping allows precise analysis of the two main intervertebral disc components—collagen and chondroitin sulfate. • Intervertebral disc (IVD) density declines with age, presumably due to a reduction in collagen and chondroitin sulfate content. • Age-related alterations of disc microstructure are most pronounced in the anterior anulus fibrosus (AAF). Supplementary Information The online version contains supplementary material available at 10.1007/s00330-021-08028-z.
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Shi K, Huang Y, Huang L, Wang J, Wang Y, Feng G, Liu L, Song Y. [Research progress of hydrogel used for regeneration of nucleus pulposus in intervertebral disc degeneration]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2020; 34:275-284. [PMID: 32174070 DOI: 10.7507/1002-1892.201907092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective To summarize the research progress of hydrogels for the regeneration and repair of degenerative intervertebral disc and to investigate the potential of hydrogels in clinical application. Methods The related literature about the role of hydrogels in intervertebral disc degeneration especially for nucleus pulposus was reviewed and analyzed. Results Hydrogels share similar properties with nucleus pulposus, and it plays an important role in the regeneration and repair of degenerative intervertebral disc, which can be mainly applied in nucleus pulposus prosthesis, hydrogel-based cell therapy, non-cellular therapy, and tissue engineering repair. Conclusion Hydrogels are widely used in the regeneration and repair of intervertebral disc, which provides a potential treatment for intervertebral disc degeneration.
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Affiliation(s)
- Kun Shi
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Yong Huang
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Leizhen Huang
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Jingcheng Wang
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Yuhan Wang
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Ganjun Feng
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Limin Liu
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
| | - Yueming Song
- Departmen of Orthopedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P.R.China
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Shi J, Zhou X, Wang Z, Kurra S, Niu J, Yang H. Increased lactic acid content associated with extracellular matrix depletion in a porcine disc degeneration induced by superficial annular lesion. BMC Musculoskelet Disord 2019; 20:551. [PMID: 31747924 PMCID: PMC6868808 DOI: 10.1186/s12891-019-2937-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 11/08/2019] [Indexed: 01/08/2023] Open
Abstract
Background Degenerative intervertebral disc (IVD) disease can cause lower back pain. However, the change of lactic acid content during disc degeneration process still unclear. The objective of this study was to investigate whether the change of the content of lactic acid is associated with depletion of degenerative intervertebral disc extracellular matrix. Methods A total of 18 miniature pigs were equally divided into annular lesion surgery (AL) and sham group. The lateral superficial annulus fibrosus (AF) of T12-L4 discs in AL group were penetrated by 3.5 mm trepan with the depth of 3 mm, the same IVD were only exposed without any injury in the sham group. At 4, 8 and 12 weeks after surgery, the degree of intervertebral disc degeneration was evaluated by magnetic resonance, histological and biochemical analysis. Results No obvious degeneration was found in sham group. However, disc degeneration was found and gradually worsened in AL group after surgery. Histological analysis showed that the AF was rupture and disorder, the number of cells in nucleus pulposus (NP) was decreased in AL group. Compared with the sham group, the extent of type II collagen (Col-II) and aggrecan in NP tissue was dramatically decreased in AL group, consistent with the results of Col -II immunohistochemistry staining and quantitative reverse transcription polymerase chain reaction (qRT-PCR). Besides, the gene expression of matrix metallopeptidase 3 and 13 also continuous increased in AL group. The amount of lactic acid and nerve growth factor in NP tissue was gradually increased after operation in AL group. Conclusions The content of lactic acid gradually increased after annular lesion, associated with the damage of AF structural and the decrease of Col -II and aggrecan in NP tissue, which leading to the disc degeneration. Depletion of extracellular matrix is consistent with lactic acid accumulation inside of IVD.
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Affiliation(s)
- Jinhui Shi
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Xichao Zhou
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Zhen Wang
- Department of Orthopedics, Suzhou Hospital of Traditional Chinese Medicine, 889 Wuzhongxi Road, Suzhou, 215000, Jiangsu, China
| | - Swamy Kurra
- Department of Orthopedic Surgery, SUNY Upstate Medical University, 720 E. Adams St, Syracuse, NY, 13210, USA
| | - Junjie Niu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China
| | - Huilin Yang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, China.
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Bezci SE, Werbner B, Zhou M, Malollari KG, Dorlhiac G, Carraro C, Streets A, O'Connell GD. Radial variation in biochemical composition of the bovine caudal intervertebral disc. JOR Spine 2019; 2:e1065. [PMID: 31572982 PMCID: PMC6764789 DOI: 10.1002/jsp2.1065] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 07/19/2019] [Accepted: 08/02/2019] [Indexed: 12/18/2022] Open
Abstract
Bovine caudal discs have been widely used in spine research due to their increased availability, large size, and mechanical and biochemical properties that are comparable to healthy human discs. However, despite their extensive use, the radial variations in bovine disc composition have not yet been rigorously quantified with high spatial resolution. Previous studies were limited to qualitative analyses or provided limited spatial resolution in biochemical properties. Thus, the main objective of this study was to provide quantitative measurements of biochemical composition with higher spatial resolution than previous studies that employed traditional biochemical techniques. Specifically, traditional biochemical analyses were used to measure water, sulfated glycosaminoglycan, collagen, and DNA contents. Gravimetric water content was compared to data obtained through Raman spectroscopy and differential scanning calorimetry. Additionally, spatial distribution of lipids in the disc's collagen network was visualized and quantified, for the first time, using multi-modal second harmonic generation (SHG) and Coherent anti-Stokes Raman (CARS) microscopy. Some heterogeneity was observed in the nucleus pulposus, where the water content and water-to-protein ratio of the inner nucleus were greater than the outer nucleus. In contrast, the bovine annulus fibrosus exhibited a more heterogeneous distribution of biochemical properties. Comparable results between orthohydroxyproline assay and SHG imaging highlight the potential benefit of using SHG microscopy as a less destructive method for measuring collagen content, particularly when relative changes are of interest. CARS images showed that lipid deposits were distributed equally throughout the disc and appeared either as individual droplets or as clusters of small droplets. In conclusion, this study provided a more comprehensive assessment of spatial variations in biochemical composition of the bovine caudal disc.
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Affiliation(s)
- Semih E. Bezci
- Department of Mechanical EngineeringUniversity of CaliforniaBerkeleyCalifornia
| | - Benjamin Werbner
- Department of Mechanical EngineeringUniversity of CaliforniaBerkeleyCalifornia
| | - Minhao Zhou
- Department of Mechanical EngineeringUniversity of CaliforniaBerkeleyCalifornia
| | | | - Gabriel Dorlhiac
- Berkeley Biophysics ProgramUniversity of CaliforniaBerkeleyCalifornia
| | - Carlo Carraro
- Department of Chemical and Biomolecular EngineeringUniversity of CaliforniaBerkeleyCalifornia
| | - Aaron Streets
- Berkeley Biophysics ProgramUniversity of CaliforniaBerkeleyCalifornia
- Department of BioengineeringUniversity of CaliforniaBerkeleyCalifornia
- Chan‐Zuckerberg BiohubSan FranciscoCalifornia
| | - Grace D. O'Connell
- Department of Mechanical EngineeringUniversity of CaliforniaBerkeleyCalifornia
- Department of Orthopaedic SurgeryUniversity of CaliforniaSan FranciscoCalifornia
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