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https://www.readbyqxmd.com/read/29053719/total-disc-replacement-using-tissue-engineered-intervertebral-discs-in-the-canine-cervical-spine
#1
Yu Moriguchi, Jorge Mojica-Santiago, Peter Grunert, Brenton Pennicooke, Connor Berlin, Thamina Khair, Rodrigo Navarro-Ramirez, Rodolfo J Ricart Arbona, Joseph Nguyen, Roger Härtl, Lawrence J Bonassar
The most common reason that adults in the United States see their physician is lower back or neck pain secondary to degenerative disc disease. To date, approaches to treat degenerative disc disease are confined to purely mechanical devices designed to either eliminate or enable flexibility of the diseased motion segment. Tissue engineered intervertebral discs (TE-IVDs) have been proposed as an alternative approach and have shown promise in replacing native IVD in the rodent tail spine. Here we demonstrate the efficacy of our TE-IVDs in the canine cervical spine...
2017: PloS One
https://www.readbyqxmd.com/read/29042967/a-case-control-study-on-the-treatment-of-protrusion-of-lumbar-intervertebral-disc-through-peld-and-med
#2
Hong-Pu Song, Hong-Feng Sheng, Wei-Xing Xu
We compared the clinical effects between the percutaneous endoscopic lumbar discectomy (PELD) and microendoscopic discectomy (MED) treatments for protrusion of lumbar intervertebral disc. We conducted a retrospective analysis on 60 patients who were diagnosed with single-segment protrusion of lumbar intervertebral disc during the period from January 2009 to June 2016. Patients were divided into two groups, the PELD and MED groups, which contained 30 cases each. We evaluated the operation results according to oswestry dysfunction index (ODI), visual analogue scale (VAS) and the improved MacNab standard...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29042769/bioabsorbable-self-retaining-pla-nano-sized-%C3%AE-tcp-cervical-spine-interbody-fusion-cage-in-goat-models-an-in-vivo-study
#3
Lu Cao, Qian Chen, Li-Bo Jiang, Xiao-Fan Yin, Chong Bian, Hui-Ren Wang, Yi-Qun Ma, Xiang-Qian Li, Xi-Lei Li, Jian Dong
STUDY DESIGN: This is an experimental animal study. OBJECTIVE: The objective of this study was to compare an anterior cervical discectomy and interbody fusion of a novel polylactide/nano-sized β-tricalcium phosphate (PLA/nβ-TCP) bioabsorbable self-retaining cervical fusion cage (BCFC) with an autologous bone graft and polyetheretherketone (PEEK) cages. BACKGROUND: Although PLA cervical cages have potential advantages compared with traditional materials, they are not currently routinely used in spine surgery because of undesirable effects such as the lack of osteoconductivity and osteolysis around the implant...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29042621/postnatal-development-of-the-murine-notochord-remnants-quantified-by-high-resolution-contrast-enhanced-microct
#4
Sameer Bhalla, Kevin H Lin, Simon Y Tang
The notochord gives rise to spinal segments during development, and it becomes embedded within the nucleus pulposus of the intervertebral disc (IVD) during maturation. The disruption of the notochord band has been observed with IVD degeneration. Since the mechanical competence of the IVD relies on its structural constituents, defining the structure of the notochord during aging is critical for investigations relating to IVD function and homeostasis. The assessment and imaging of the notochord has classically relied on histological techniques, which introduces sectioning artifacts during preparation and spatial biases...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29039595/caveolin%C3%A2-1-regulates-oxidative-stress%C3%A2-induced-senescence-in-nucleus-pulposus-cells-primarily-via-the-p53-p21-signaling-pathway-in%C3%A2-vitro
#5
Lei Ding, Qingmin Zeng, Jingping Wu, Defang Li, Houlei Wang, Wei Lu, Zengxin Jiang, Guoxiong Xu
Previous studies have indicated that cellular senescence is a critical underlying mechanism of intervertebral disc degeneration. However, the precise mechanism by which cellular senescence accelerates disc degeneration has not been fully elucidated. Caveolin‑1 has recently emerged as an important regulator of cellular senescence. Therefore, the aim of the present study was to investigate whether caveolin‑1 is involved in nucleus pulposus (NP) cellular senescence during oxidative stress. PCR was used to detect caveolin‑1 mRNA expression and protein expression was detected by western blotting...
October 13, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29039507/effect-of-the-adenovirus%C3%A2-mediated-wip1-gene-on-lumbar-intervertebral-disc-degeneration-in-a-rabbit-model
#6
Yuan Wang, Yong Yang, Jing-Chuan Sun, Qin-Jie Kong, Hai-Bo Wang, Jian-Gang Shi
The present study aimed to investigate the effect of the adenovirus‑mediated wild‑type p53‑induced protein phosphatase 1 (Wip1) gene on lumbar disc degeneration (LDD) in a rabbit model. Adult New Zealand white rabbits were used as experimental subjects. The rabbits were divided into LDD groups (groups A‑C of rabbit models of LDD) and control groups (groups D‑F of normal rabbits). The animals in groups A and D were injected with the Wip1 gene vector, those in groups B and E were injected with an empty vector, and those in groups C and F were injected with phosphate‑buffered saline...
October 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29039500/gene-expression-profile-identifies-potential-biomarkers-for-human-intervertebral-disc-degeneration
#7
Wei Guo, Bin Zhang, Yan Li, Hui-Quan Duan, Chao Sun, Yun-Qiang Xu, Shi-Qing Feng
The present study aimed to reveal the potential genes associated with the pathogenesis of intervertebral disc degeneration (IDD) by analyzing microarray data using bioinformatics. Gene expression profiles of two regions of the intervertebral disc were compared between patients with IDD and controls. GSE70362 containing two groups of gene expression profiles, 16 nucleus pulposus (NP) samples from patients with IDD and 8 from controls, and 16 annulus fibrosus (AF) samples from patients with IDD and 8 from controls, was downloaded from the Gene Expression Omnibus database...
October 9, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29038477/long-non-coding-hcg18-promotes-intervertebral-disc-degeneration-by-sponging-mir-146a-5p-and-regulating-traf6-expression
#8
Yanhai Xi, Tingwang Jiang, Weiheng Wang, Jiangming Yu, Yang Wang, Xueming Wu, Yunfei He
Intervertebral disc degeneration (IDD) is associated with the deterioration of nucleus pulposus (NP) cells due to hypertrophic differentiation and calcification. Emerging studies have shown that long noncoding RNAs (lncRNAs) play critical roles in the development of IDD. Using bioinformatics prediction, we hereby sought to identify the lncRNAs that regulate the expression of microRNA-146a-5p (miR-146a-5p), an IDD-related inflammatory factor. Our study demonstrated that lncRNA HCG18 acted as an endogenous sponge to down-regulate miR-146a-5p expression in the NP cells by directly binding to miR-146a-5p...
October 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29032381/analysis-of-correlation-between-vertebral-endplate-change-and-lumbar-disc-degeneration
#9
Long Xiao, Chunlin Ni, Jiandong Shi, Zhirong Wang, Suchun Wang, Jianwei Zhang, Aiqing Lu
BACKGROUND To evaluate the correlation between vertebral endplate change and the level of lumbar disc degeneration via magnetic resonance imaging (MRI). MATERIAL AND METHODS A total of 345 patients who were recruited from our hospital from May 2012 to May 2016 were evaluated for the presence of intervertebral disc degeneration or herniation. The degree of degeneration was assessed according to Pfirrmann grade. Vertebral endplate change was evaluated based on the endplate concave angle (ECA), and Modic change on sagittal MRI...
October 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29031872/accumulation-and-localization-of-macrophage-phenotypes-with-human-intervertebral-disc-degeneration
#10
Kenneth R Nakazawa, Benjamin A Walter, Damien M Laudier, Divya Krishnamoorthy, Grace E Mosley, Kara L Spiller, James C Iatridis
BACKGROUND CONTEXT: Chronic inflammation is an important component of intervertebral disc (IVD) degeneration, but there is limited knowledge about the identity and source of inflammatory cells involved with the degenerative processes. Macrophages can exhibit multiple phenotypes and are known inflammatory regulators in many tissues, but their phenotypes have not been characterized in IVD degeneration. PURPOSE: To characterize accumulation and localization of macrophages in IVD degeneration...
October 11, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29028103/expressions-of-il-1%C3%AE-and-mmp-9-in-degenerated-lumbar-disc-tissues-and-their-clinical-significance
#11
P-B Li, W-J Tang, K Wang, K Zou, B Che
OBJECTIVE: To observe the expression levels of interleukin-1α (IL-1α) and matrix metalloproteinase-9 (MMP-9) in degenerated lumbar disc tissues and to investigate their clinical significance. PATIENTS AND METHODS: Fifty patients with lumbar disc degeneration received the operative treatment were divided into three groups according to the magnetic resonance imaging (MRI) results: protrusion group, extrusion group, and free group. The degenerated intervertebral disc tissues were taken, and the normal intervertebral disc tissues of 20 patients received the operative treatment due to lumbar bursting fracture, and were selected as the control group...
September 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29022686/level-of-education-as-a-risk-factor-for-extensive-prevalence-of-cervical-intervertebral-disc-degenerative-changes-and-chronic-neck-pain
#12
Vedran Markotić, Damir Zubac, Miro Miljko, Goran Šimić, Amra Zalihić, Gojko Bogdan, Dorijan Radančević, Ana Dugandžić Šimić, Josip Mašković
OBJECTIVE: The aim of this study was to document the prevalence of degenerative intervertebral disc changes in the patients who previously reported symptoms of neck pain and to determine the influence of education level on degenerative intervertebral disc changes and subsequent chronic neck pain. METHODS: One hundred and twelve patients were randomly selected from the University Hospital in Mostar, Bosna and Herzegovina, (aged 48.5±12.7 years) and submitted to magnetic resonance imaging (MRI) of the cervical spine...
September 2017: Central European Journal of Public Health
https://www.readbyqxmd.com/read/29019878/a-comparison-of-anterior-cervical-discectomy-and-fusion-combined-with-cervical-disc-arthroplasty-and-cervical-disc-arthroplasty-for-the-treatment-of-skip-level-cervical-degenerative-disc-disease-a-retrospective-study
#13
COMPARATIVE STUDY
Ting-Kui Wu, Bei-Yu Wang, Ming-Dan Deng, Ying Hong, Xin Rong, Hua Chen, Yang Meng, Hao Liu
Anterior cervical discectomy and fusion (ACDF) has been widely performed for the treatment of multilevel cervical degenerative disc disease (CDDD). In recent decades, cervical disc arthroplasty (CDA) and hybrid surgery (HS) have been developed to overcome the shortcomings of ACDF. Controversy still remains with regard to the optimal surgical procedure for skip-level CDDD.A total of 55 patients who received surgical treatment for skip-level CDDD in our department were reviewed. The patients were divided into the HS group (n = 29) and the CDA group (n = 26)...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29019804/quantification-of-propionic-acid-in-the-bovine-spinal-disk-after-infection-of-the-tissue-with-p-acnes-bacteria
#14
Sergey Magnitsky, Stefan Dudli, Xinyan Tang, Jaskanwaljeet Kaur, Joycelyn Diaz, Steve Miller, Jeffrey C Lotz
STUDY DESIGN: Research OBJECTIVE.: The goal of this study was to investigate whether P. acnes infection of the intervertebral disc can be detected noninvasively by NMR spectroscopy. SUMMARY OF BACKGROUND DATA: Microbiological studies of surgical samples suggest that a significant subpopulation of back pain patients may have occult disc infection with P. acnes bacteria. This hypothesis is further supported by a double-blind clinical trial showing that back pain patients with Modic type 1 changes may respond to antibiotic treatment...
October 10, 2017: Spine
https://www.readbyqxmd.com/read/29019591/x-ray-dynamic-observation-of-cervical-degenerative-disease-induced-by-unbalanced-dynamic-and-static-forces-in-rats-1
#15
Hua Xie, Yongjing Huang, Luming Nong, Nanwei Xu, Gongming Gao, Dong Zhou
PURPOSE: To investigate dynamically the X-ray appearance of cervical degenerative disease induced by unbalanced dynamic and static forces in rats. METHODS: A total of 60 Sprague Dawley rats were randomized into test (n=45) and control (n=15) groups, which were randomly subdivided into the one-, three- and six-month post-operative groups. The test group included 10, 15 and 20 rats at the respective corresponding post-operative stage and the control group included five rats at each time-point...
September 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/29017495/treatment-of-thoracic-or-lumbar-burst-fractures-with-balloon-assisted-endplate-reduction-using-tricalcium-phosphate-cement-histological-and-radiological-evaluation
#16
Joep Kitzen, Martijn G M Schotanus, Herbert S W Plasschaert, Frans-Jan H Hulsmans, Pieter B J Tilman
BACKGROUND: Short-segment pedicle-screw instrumentation is frequently used to stabilize thoracolumbar burst fractures. A recognized disadvantage of this procedure is recurrent kyphosis from intervertebral disc creep into the fractured central endplate. Balloon Assisted Endplate Reduction (BAER) using Tricalcium Phosphate bone cement (TCP) enables elevation of the centrally depressed endplate. Our objective was to evaluate the bone-tissue response to TCP and to analyse whether BAER using TCP can prevent recurrent kyphosis after removal of the instrumentation...
October 10, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29017300/long-term-clinical-and-radiological-outcomes-after-central-decompressive-laminoplasty-for-lumbar-spinal-stenosis
#17
Jun-Hwan Kim, Young-Joon Kwon
OBJECTIVE: There are many technical modifications of decompressive lumbar laminectomy. The purpose of this study was to report long-term clinical and radiological outcomes of central decompressive laminoplasty (CDL), the corresponding author's own modification of lumbar laminectomy for lumbar spinal stenosis (LSS). METHODS: Among 100 patients who underwent CDL by a single surgeon between December 2010 and March 2014, 68 patients were included in this study. Mean follow-up time was 37...
September 2017: Korean Journal of Spine
https://www.readbyqxmd.com/read/29016437/a-mouse-intervertebral-disc-degeneration-model-by-surgically-induced-instability
#18
Takeshi Oichi, Yuki Taniguchi, Kazuhito Soma, Song Ho Chang, Fumiko Yano, Sakae Tanaka, Taku Saito
STUDY DESIGN: Experimental study to develop a mouse model of lumbar intervertebral disc degeneration (IDD). OBJECTIVE: The aim of this study was to develop a mouse lumbar IDD model using surgically-induced instability and to compare the findings of this model to those in human IDD. SUMMARY OF BACKGROUND DATA: Previously, various kinds of inducers have been used to reproduce IDD in experimental animals; however, there is yet no standard mouse lumbar IDD model without direct injury to intervertebral disc...
October 9, 2017: Spine
https://www.readbyqxmd.com/read/28994450/the-role-of-transient-receptor-potential-channels-in-joint-diseases
#19
O Krupkova, J Zvick, K Wuertz-Kozak
Transient receptor potential channels (TRP channels) are cation selective transmembrane receptors with diverse structures, activation mechanisms and physiological functions. TRP channels act as cellular sensors for a plethora of stimuli, including temperature, membrane voltage, oxidative stress, mechanical stimuli, pH and endogenous, as well as, exogenous ligands, thereby illustrating their versatility. As such, TRP channels regulate various functions in both excitable and non-excitable cells, mainly by mediating Ca2+ homeostasis...
October 10, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/28993894/the-association-of-lumbar-intervertebral-disc-calcification-on-plain-radiographs-with-the-ute-disc-sign-on-mri
#20
Uruj Zehra, Cora Bow, Jason Pui Yin Cheung, Henry Pang, William Lu, Dino Samartzis
PURPOSE: The pathogenesis and the clinical impact of disc calcification are not well known. Utilizing ultra-short time-to-echo (UTE) magnetic resonance imaging, the UTE Disc Sign (UDS) (i.e., hypo/hyper-intense disc band) was developed and found to be more significantly related to pain and disability than the conventional T2-weighted (T2W) MRI. It has been hypothesized that the UDS may represent mineralized deposits in the disc. The following study addressed the relationship between disc calcification on plain radiographs to that of the UDS on MRI...
October 9, 2017: European Spine Journal
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