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Intervertebral disc degeneration

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https://www.readbyqxmd.com/read/28634047/the-study-of-the-intervertebral-disc-microstructure-in-matured-rats-with-diffusion-kurtosis-imaging
#1
Li Li, Wenzhen Zhu, Weiwei Chen, Jicheng Fang, Jing Li
OBJECTIVES: The aim of this study was to use DKI to detect the microstructural change of the discs in matured normal rats. METHODS: Total 24 normal SD rats (12 males/12 females) underwent DWI/DKI and T2 sequences with a 3T MRI scanner to get the values of ADC, FA, MD, Da, Dr, MK, Ka and Kr. The discs were categorized using a five-grade degeneration grading system in the T2-images. The height of the discs and the parameters in DWI/DKI were measured to compare between the different grades and sexes...
June 17, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28632557/vertebral-end-plate-perforation-for-intervertebral-disc-height-preservation-after-single-level-lumbar-discectomy-a-randomized-controlled-trial
#2
Miha Vodičar, Robert Košak, Matevž Gorenšek, Robert Korez, Tomaž Vrtovec, Jadran Koder, Vane Antolič, Rok Vengust
STUDY DESIGN: Pilot single-centre, stratified, prospective, randomized, double-blinded, parallel-group, controlled study. OBJECTIVE: To determine whether vertebral end-plate perforation after lumbar discectomy causes annulus reparation and intervertebral disc volume restoration. To determine that after 6 months there would be no clinical differences between the control and study group. SUMMARY OF BACKGROUND DATA: Low back pain is the most common long-term complication after lumbar discectomy...
July 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28631843/age-related-spontaneous-lumbar-intervertebral-disc-degeneration-in-a-mouse-model
#3
Takashi Ohnishi, Hideki Sudo, Takeru Tsujimoto, Norimasa Iwasaki
The pathogenesis of intervertebral disc degeneration is unclear, but it is a major cause of several spinal diseases. Animal models have historically provided an appropriate benchmark for understanding the human spine. However, there is little information about when intervertebral disc degeneration begins in the mouse or regarding the relationship between magnetic resonance imaging and histological findings. The aim for this study was to obtain information about age-related spontaneous intervertebral disc degeneration in the mouse lumbar spine using magnetic resonance imaging and a histological score regarding when the intervertebral disc degeneration started and how rapidly it progressed, as well as how our histological score detected the degeneration...
June 20, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28620118/role-of-p38-mapk-pathway-in-the-effects-of-high-magnitude-compression-on-nucleus-pulposus-cell-senescence-in-a-disc-perfusion%C3%A2-culture
#4
Pei Li, Ruijie Zhang, Yuan Xu, Lei Song, Qiang Zhou
Nucleus pulposus (NP) cell senescence is a typical pathological feature within the degenerative intervertebral disc. As a potential inducing and aggregating factor of disc degeneration, mechanical overloading affects disc biology in multiple ways. This study was to investigate the NP cell senescence-associated phenotype under intermittent high compression in an ex vivo disc bioreactor culture, and the role of the p38-MAPK pathway in this regulatory process. Porcine discs were cultured in culture chambers of a self-developed mechanically active bioreactor and subjected to different magnitudes of dynamic compression (low-magnitude and high-magnitude: 0...
June 15, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28619001/icariin-attenuates-interleukin-1%C3%AE-induced-inflammatory-response-in-human-nucleus-pulposus-cells
#5
Wen-Bin Hua, Yu-Kun Zhang, Xing-Huo Wu, Liang Kang, Ji Tu, Kang-Cheng Zhao, Shuai Li, Kun Wang, Yu Song, Rong-Jin Luo, Zeng-Wu Shao, Cao Yang
BACKGROUND: Low back pain is a common problem, mainly caused by intervertebral disc degeneration (IDD). An important pathophysiological characteristic of IDD is the loss of homeostatic balance of the extracellular matrix metabolism. Interleukin-1β (IL-1β) is one of the inflammatory mediators stimulating the degradation of extracellular matrix in the nucleus pulposus (NP) and contributing to IDD pathogenesis. Icariin, which is isolated from Epimedium brevicornum, acts as an anti-inflammatory drug...
June 15, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28615510/formation-function-and-exhaustion-of-notochordal-cytoplasmic-vacuoles-within-intervertebral-disc-current-understanding-and-speculation
#6
REVIEW
Feng Wang, Zeng-Xin Gao, Feng Cai, Arjun Sinkemani, Zhi-Yang Xie, Rui Shi, Ji-Nan Wei, Xiao-Tao Wu
Notochord nucleus pulposus cells are characteristic of containing abundant and giant cytoplasmic vacuoles. This review explores the embryonic formation, biological function, and postnatal exhaustion of notochord vacuoles, aiming to characterize the signal network transforming the vacuolated nucleus pulposus cells into the vacuole-less chondrocytic cells. Embryonically, the cytoplasmic vacuoles within vertebrate notochord originate from an evolutionarily conserved vacuolation process during neurulation, which may continue to provide mechanical and signal support in constructing a mammalian intervertebral disc...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28612187/enhancement-of-energy-production-of-the-intervertebral-disc-by-the-implantation-of-polyurethane-mass-transfer-devices
#7
Yu-Fu Wang, Howard B Levene, Weiyong Gu, C -Y Charles Huang
Insufficient nutrient supply has been suggested to be one of the etiologies for intervertebral disc (IVD) degeneration. We are investigating nutrient transport into the IVD as a potential treatment strategy for disc degeneration. Most cellular activities in the IVD (e.g., cell proliferation and extracellular matrix production) are mainly driven by adenosine-5'-triphosphate (ATP) which is the main energy currency. The objective of this study was to investigate the effect of increased mass transfer on ATP production in the IVD by the implantation of polyurethane (PU) mass transfer devices...
June 13, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28606605/cervical-and-thoracic-intervertebral-disc-hydration-increases-with-recumbency-a-study-in-101-healthy-volunteers
#8
Daniel L Belavy, Matthew Quittner, Yuan Ling, David Connell, Timo Rantalainen
BACKGROUND CONTEXT: Variation in water content and size of the lumbar intervertebral discs (IVDs) is known to occur due to recumbency and has been associated with lumbar IVD herniation risk through the impact of IVD hydration on tissue mechanical properties. It is not clear if similar changes in the cervical or thoracic IVDs occur with recumbency. PURPOSE: Determine whether increases in hydration of thoracic and cervical IVDs occur with short-duration recumbency...
June 9, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28603572/fibroblast-transplantation-results-to-the-degenerated-rabbit-lumbar-intervertebral-discs
#9
Ibrahim Halil Ural, Kerem Alptekin, Aysegul Ketenci, Seyhun Solakoglu, Hasan Alpak, Süleyman Özyalçın
BACKGROUND: Our study is an analysis of the histological and radiological changes in degenerated lumbar intervertebral discs, after transplantation of fibroblasts in rabbits. With that study we aimed to show the viability of the fibroblasts injected to the degenerated discs, and observe their potential for further studies. METHOD: The apoptosis of the cell is one of the factors at the disc degeneration process. Fibroblasts may act as mesenchymal stem cells at the tissue to which they are injected and they may replace the apoptotic cells...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28600230/cytokine-and-chemokine-profile-changes-in-patients-with-lower-segment-lumbar-degenerative-spondylolisthesis
#10
Juraj Sutovsky, Martin Benco, Martina Sutovska, Michaela Kocmalova, Lenka Pappova, Juraj Miklusica, Andrej Frano, Egon Kurca
BACKGROUND: Lumbar degenerative spondylolisthesis (DS) develops as a result of inflammatory and remodeling processes in facet joints (FJs). Several inflammatory cytokines are involved in the osteoarthritic and remodeling changes that occur and in low-back and/or radicular pain, the most prevalent clinical symptom of disease. This study improves knowledge related to the roles that 27 cytokines, chemokines and growth factors play in the pathophysiology of lumbar DS. MATERIAL AND METHODS: Cytokine levels were examined using capture sandwich immunoassay using the Bio-Plex(®) 200 System and the Bio-PlexTM Human Cytokine Standard 27-Plex, Group I (Bio-Rad, Hercules, California, USA) separately in intervertebral discs (IVDs) and FJ bone tissue...
June 6, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28594131/optimization-of-puncture-injury-to-rat-caudal-disc-for-mimicking-early-degeneration-of-intervertebral-disc
#11
Ming-Hsiao Hu, Kai-Chiang Yang, Yeong-Jang Chen, Yuan-Hui Sun, Feng-Huei Lin, Shu-Hua Yang
The caudal discs of rats have been proposed as a puncture model in which intervertebral disc (IVD) degeneration can be induced and novel therapies can be tested. For biological repair, treatments for ongoing IVD degeneration are ideally administered during the earlier stages. The purpose of this study was to elucidate the optimal puncture needle size for creating a model that mimicked the earlier stages of IVD degeneration. According to the disc height index, histologic score and MRI grading, a puncture needle sized 21G or larger induced rapid degenerative processes in rat caudal discs during the initial 2-4 weeks...
June 8, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28590060/structure-function-relationships-at-the-human-spinal-disc-vertebra-interface
#12
Britta Berg-Johansen, Aaron J Fields, Ellen C Liebenberg, Alfred Li, Jeffrey C Lotz
Damage at the intervertebral disc-vertebra interface associates with back pain and disc herniation. However, the structural and biomechanical properties of the disc-vertebra interface remain underexplored. We sought to measure mechanical properties and failure mechanisms, quantify architectural features, and assess structure-function relationships at this vulnerable location. Vertebra-disc-vertebra specimens from human cadaver thoracic spines were scanned with micro-computed tomography (μCT), surface speckle-coated, and loaded to failure in uniaxial tension...
June 7, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28588682/comparison-of-biological-characteristics-of-nucleus-pulposus-mesenchymal-stem-cells-derived-from-non-degenerative-and-degenerative-human-nucleus-pulposus
#13
Zhiwei Jia, Pushan Yang, Yaohong Wu, Yong Tang, Yachao Zhao, Jianhong Wu, Deli Wang, Qing He, Dike Ruan
Cell therapy using mesenchymal stem cells provides a promising approach for the treatment of intervertebral disc degeneration (IDD). In recent years, human nucleus pulposus mesenchymal stem cells (NPMSCs) have been identified in nucleus pulposus tissue and displayed great potential for the regeneration of IDD. However, biological differences between non-degenerative and degenerative nucleus pulposus-derived NPMSCs have remained to be defined. The aim of the present study was to compare the biological characteristics of human NPMSCs derived from non-degenerative and degenerative nucleus pulposus...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28587986/angle-ply-biomaterial-scaffold-for-annulus-fibrosus-repair-replicates-native-tissue-mechanical-properties-restores-spinal-kinematics-and-supports-cell-viability
#14
Ryan Borem, Allison Madeline, Joshua Walters, Henry Mayo, Sanjitpal Gill, Jeremy Mercuri
Annulus fibrosus (AF) damage commonly occurs due to intervertebral disc (IVD) degeneration/herniation. The dynamic mechanical role of the AF is essential for proper IVD function and thus it is imperative that biomaterials developed to repair the AF withstand the mechanical rigors of the native tissue. Furthermore, these biomaterials must resist accelerated degradation within the proteolytic environment of degenerate IVDs while supporting integration with host tissue. We have previously reported a novel approach for developing collagen-based, multi-laminate AF repair patches (AFRPs) that mimic the angle-ply architecture and basic tensile properties of the human AF...
June 3, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28586059/identification-of-critical-genes-in-nucleus-pulposus-cells-isolated-from-degenerated-intervertebral-discs-using-bioinformatics-analysis
#15
Zhuangchen Zhu, Guang Chen, Wei Jiao, Defeng Wang, Yan Cao, Qingfu Zhang, Junqin Wang
Intervertebral disc (IVD) degeneration is a pathological process, which may lead to lower back pain. The present study aimed to investigate the pathogenesis of IVD degeneration. GSE42611 was downloaded from Gene Expression Omnibus, including 4 nucleus pulposus samples isolated from degenerated IVDs and 4 nucleus pulposus samples separated from normal IVDs. The differentially expressed genes (DEGs) between the degenerated and normal samples were screened using the limma package in R. Functional and pathway enrichment analyses were conducted separately for the upregulated and downregulated genes, using Database for Annotation, Visualization and Integrated Discovery software...
July 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28583105/characteristics-and-potentials-of-stem-cells-derived-from-human-degenerated-nucleus-pulposus-potential-for-regeneration-of-the-intervertebral-disc
#16
Xiao-Chuan Li, Yong Tang, Jian-Hong Wu, Pu-Shan Yang, De-Li Wang, Di-Ke Ruan
BACKGROUND: Eliminating the symptoms during treatment of intervertebral disc degeneration (IVDD) is only a temporary solution that does not cure the underlying cause. A biological method to treat this disorder may be possible by the newly discovered nucleus pulposus derived stem cells (NPDCs). However, the uncertain characteristics and potential of NPDCs calls for a comprehensive study. METHODS: In the present study, nucleus pulposus samples were obtained from 5 patients with IVDD undergoing discectomy procedure and NPDCs were harvested using fluorescence activated cell sorting (FACS) by the co-expression of GD2(+) and Tie2(+)...
June 5, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28582905/a-comparative-study-on-the-mechanical-behavior-of-intervertebral-disc-using-hyperelastic-finite-element-model
#17
Feng Xie, Honghai Zhou, Wenju Zhao, Lixin Huang
BACKGROUND: Lumbar disc herniation may result in excruciating pain due to it being one of the most common diseases related to changes of intervertebral disc (IVD). In order to find a better clinical treatment and prevention scheme for relieving the pain caused by spine degeneration, the mechanical behavior analysis of IVD must be studied. OBJECTIVE: A finite element method (FEM) is used in this study to analyze the mechanical behaviors of healthy and herniated IVD...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28580566/animal-models-for-disc-degeneration-an-update
#18
REVIEW
Li Jin, Gary Balian, Xudong Joshua Li
Intervertebral disc degeneration is considered a major cause of back pain that places a heavy burden on society, both because of its effect on the physiology of individuals and its consequences on the world economy. During the past few decades, research findings in the pre-clinical setting have led to a significant increase in the understanding of intervertebral disc degeneration, although many aspects of the disease remain unclear. The goal of this review is to summarize existing animal models for disc degeneration studies and the difficulties that are associated with the use of such models...
June 5, 2017: Histology and Histopathology
https://www.readbyqxmd.com/read/28579261/are-axial-intervertebral-disc-biomechanics-determined-by-osmosis
#19
Pieter-Paul A Vergroesen, Kaj S Emanuel, Mirte Peeters, Idsart Kingma, Theodoor H Smit
The intervertebral disc faces high compressive forces during daily activities. Axial compression induces creeping fluid loss and reduction in disc height. With degeneration, disc fluids and height are progressively lost, altering biomechanics. It is assumed that this reduction of fluids is caused by a decline of osmolality within the disc due to proteoglycan depletion. Here we investigate the isolated effect of a reduction in osmosis on the biomechanical properties of the intervertebral disc. Continuous diurnal loading was applied to healthy caprine intervertebral discs in a loaded disc culture system for a total of 6days...
May 8, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28576140/rank-rankl-opg-system-in-the-intervertebral-disc
#20
Norihiko Takegami, Koji Akeda, Junichi Yamada, Tomohiko Sano, Koichiro Murata, Jenny Huang, Koichi Masuda, Akihiro Sudo
BACKGROUND: The receptor activator of NF-κB ligand (RANKL), a member of the TNF ligand superfamily, is known to regulate bone metabolism. The expression of each component of the RANK/RANKL/osteoprotegerin (OPG) system in the intervertebral disc (IVD) has not been examined in detail. The purposes of this study were to examine the expression of the RANK/RANKL/OPG system and to evaluate the function of RANKL in the matrix metabolism of the rat IVD. METHODS: Sprague-Dawley, 12-week-old, male rats were used in this study...
June 2, 2017: Arthritis Research & Therapy
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