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lumbar degeneration in humans

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https://www.readbyqxmd.com/read/29316495/vdr-and-gc-gene-polymorphisms-modulate-the-risk-of-lumbar-disc-degeneration-in-iran
#1
Sohail Mashayekhi, Alia Saberi, Zivar Salehi, Gelareh Biazar, Roghayeh Mehrdel
OBJECTIVE: Lumbar disc degeneration (LDD) occurs commonly in humans. Vitamin D metabolic and signaling pathway plays a significant role in intervertebral disc degeneration. The aim of this study was to evaluate the influence of the genetic polymorphism in the two key genes of 1,25-(OH)2-D3 pathway, VDR (vitamin D receptor) and GC (group-specific component), in LDD development. PATIENTS AND METHODS: Two single-nucleotide polymorphisms, VDR rs2228570 (FokI) and GC rs7041, were genotyped in 180 patients with LDD and 230 healthy individuals...
December 29, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29315127/tidemark-avulsions-are-a-predominant-form-of-endplate-irregularity
#2
Britta Berg-Johansen, Deeptee Jain, Ellen C Liebenberg, Aaron J Fields, Thomas M Link, Conor W O'Neill, Jeffrey C Lotz
STUDY DESIGN: Descriptive histologic and MRI study of human cadaveric spines. OBJECTIVE: To identify and characterize common endplate pathologies to form a histologic foundation for an etiology-based classification system. SUMMARY OF BACKGROUND DATA: Irregularities at the spinal disc-vertebra interface are associated with back pain and intervertebral disc herniation injuries. However, there is currently a lack of consensus regarding terminology for classification...
January 8, 2018: Spine
https://www.readbyqxmd.com/read/29259641/icariin-prevents-il-1%C3%AE-induced-apoptosis-in-human-nucleus-pulposus-via-the-pi3k-akt-pathway
#3
Xiangyu Deng, Wei Wu, Hang Liang, Donghua Huang, Doudou Jing, Dong Zheng, Zengwu Shao
Purpose: To explore the effect and possible mechanism of icariin, a prenylated flavonol glycoside derived from the Chinese herb Epimedium sagittatum that was applied to IL-1β pretreated human nucleus pulposus (NP) cells. Methods: Human NP cells were isolated from intervertebral discs of patients with scoliosis and lumbar spondylolisthesis. The cells were divided into five groups: A (blank control); B (20 ng/ml IL-1β); C (20 ng/ml IL-1β + 20 μM icariin); D (20 μM icariin + 20 ng/ml IL-1β + 25 μM LY294002); E (20 ng/ml IL-1β + 25 μM LY294002)...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29259166/inhibition-of-autophagy-delays-motoneuron-degeneration-and-extends-lifespan-in-a-mouse-model-of-spinal-muscular-atrophy
#4
Antonio Piras, Lorenzo Schiaffino, Marina Boido, Valeria Valsecchi, Michela Guglielmotto, Elena De Amicis, Julien Puyal, Ana Garcera, Elena Tamagno, Rosa M Soler, Alessandro Vercelli
Spinal muscular atrophy (SMA) is a recessive autosomal neuromuscular disease, due to homozygous mutations or deletions in the telomeric survival motoneuron gene 1 (SMN1). SMA is characterized by motor impairment, muscle atrophy, and premature death following motor neuron (MN) degeneration. Emerging evidence suggests that dysregulation of autophagy contributes to MN degeneration. We here investigated the role of autophagy in the SMNdelta7 mouse model of SMA II (intermediate form of the disease) which leads to motor impairment by postnatal day 5 (P5) and to death by P13...
December 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29221904/tensile-behaviour-of-individual-fibre-bundles-in-the-human-lumbar-anulus-fibrosus
#5
Diana T Pham, Joe G Shapter, John J Costi
Disc degeneration is a common medical affliction whose origins are not fully understood. An improved understanding of its underlying mechanisms could lead to the development of more effective treatments. The aim of this paper was to investigate the effect of (1) degeneration, (2) circumferential region and (3) strain rate on the microscale mechanical properties (toe region modulus, linear modulus, extensibility, phase angle) of individual fibre bundles in the anulus fibrosus lamellae of the human intervertebral disc...
November 28, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29204735/inflammaging-in-cervical-and-lumbar-degenerated-intervertebral-discs-analysis-of-proinflammatory-cytokine-and-trp-channel-expression
#6
Aleksandra Sadowska, Ermioni Touli, Wolfgang Hitzl, Helen Greutert, Stephen J Ferguson, Karin Wuertz-Kozak, Oliver N Hausmann
PURPOSE: To investigate and compare the occurrence of inflammatory processes in the sites of disc degeneration in the lumbar and cervical spine by a gene array and subsequent qPCR and to investigate the mechanistic involvement of transient receptor potential channels TRPC6 and TRPV4. METHODS: The gene expression of inflammatory cytokines and TRP channels was measured in human disc samples obtained from patients undergoing discectomy at the cervical (n = 24) or lumbar (n = 27) spine for degenerative disc disease (DDD) and disc herniation (DH) and analyzed for differences with regard to spinal level, IVD degeneration grade, Modic grade, age, sex, disc region and surgical extent...
December 4, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29202297/finite-element-investigation-of-the-effect-of-nucleus-removal-on-vibration-characteristics-of-the-lumbar-spine-under-a-compressive-follower-preload
#7
Wei Fan, Li-Xin Guo
Previous studies have reported the effect of removing the nucleus on biomechanical responses of the human spine to static loadings. However, few studies have dealt with the whole-body vibration condition. The purpose of this study was to investigate the effect of a single-level (L4-L5) nucleus removal on vibration characteristics of the whole lumbar spine in the presence of a physiologic compressive preload, and also to evaluate the preload effect on the vibration characteristics. A 3-D non-linear finite element model of the lumbar spine (L1 to sacrum) subjected to the physiologic conditions of a compressive follower preload was developed and validated...
November 26, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29099857/knockout-of-apolipoprotein-e-in-rabbit-promotes-premature-intervertebral-disc-degeneration-a-new-in-vivo-model-for-therapeutic-approaches-of-spinal-disc-disorders
#8
Anja Beierfuß, Hermann Dietrich, Christian Kremser, Monika Hunjadi, Andreas Ritsch, Thomas Rülicke, Claudius Thomé, Demissew Shenegelegn Mern
Intervertebral disc (IVD) degeneration that accelerates the loss of disc structural and functional integrities is recognized as one of the major factors of chronic back pain. Cardiovascular risk factors, such as deficits of apolipoproteins that elevate the levels of cholesterol and triglycerides, are considered critical for the progress of atherosclerosis; notably in the abdominal aorta and its lumbar branching arteries that supply lumbar vertebrae and IVDs. Obstruction of the lumbar arteries by atherosclerosis is presumed to promote lumbar disc degeneration and low back pain...
2017: PloS One
https://www.readbyqxmd.com/read/29063365/intervertebral-disc-degeneration-an-experimental-and-numerical-study-using-a-rabbit-model
#9
Andrea Calvo-Echenique, José Cegoñino, Laura Correa-Martín, Luciano Bances, Amaya Pérez-Del Palomar
Animal models have been extensively used for the study of degenerative diseases and evaluation of new therapies to stop or even reverse the disease progression. The aim of this study is to reproduce lumbar intervertebral disc degeneration in a rabbit model by performing a percutaneous annular puncture at L4L5 level. The effect of this damage on the spine behaviour was analysed combining three different techniques: imaging processing, mechanical testing and computational modelling. Twenty New Zealand white rabbits were divided into control and experimental groups and followed up during 6 months...
October 23, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29016437/a-mouse-intervertebral-disc-degeneration-model-by-surgically-induced-instability
#10
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/28984733/cartilage-endplate-thickness-variation-measured-by-ultrashort-echo-time-mri-is-associated-with-adjacent-disc-degeneration
#11
Britta Berg-Johansen, Misung Han, Aaron J Fields, Ellen C Liebenberg, Brandon J Lim, Peder Ez Larson, Cigdem Gunduz-Demir, Galateia J Kazakia, Roland Krug, Jeffrey C Lotz
STUDY DESIGN: A magnetic resonance imaging study of human cadaver spines. OBJECTIVE: To investigate associations between cartilage endplate (CEP) thickness and disc degeneration. SUMMARY OF BACKGROUND DATA: Damage to the CEP is associated with spinal injury and back pain. However, CEP morphology and its association with disc degeneration have not been well characterized. METHODS: Ten lumbar motion segments with varying degrees of disc degeneration were harvested from six cadaveric spines and scanned with MRI in the sagittal plane using a T2-weighted 2D sequence, a 3D ultrashort echo-time (UTE) imaging sequence, and a 3D T1ρ mapping sequence...
October 3, 2017: Spine
https://www.readbyqxmd.com/read/28944851/microrna%C3%A2-96-regulates-the-proliferation-of-nucleus-pulposus-cells-by-targeting-arid2-akt-signaling
#12
Bo Tao, Jiaoyu Yi, Changzhao Huang, Wang Xu, Chao Qin, Lei Chen, Jincai Chen, Yan Gao, Ruiying Wang
The aberrant proliferation of nucleus pulposus (NP) cells has been reported to be implicated in the pathogenesis of intervertebral disc degeneration (IDD). Previous studies have demonstrated that microRNAs (miRNAs), which are a group of small noncoding RNAs, are critical regulators of cell proliferation in various pathologies. However, the role of miRNA‑96 (miR‑96) in the proliferation of NP cells remains to be determined. In the present study, reverse transcription‑quantitative polymerase chain reaction was used to investigate the expression of miR‑96 in NP tissues from patients with IDD and healthy tissues from patients with traumatic lumbar fracture as the control...
November 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28938891/treatment-of-lumbar-degenerative-disc-disease-associated-radicular-pain-with-culture-expanded-autologous-mesenchymal-stem-cells-a-pilot-study-on-safety-and-efficacy
#13
Christopher Centeno, Jason Markle, Ehren Dodson, Ian Stemper, Christopher J Williams, Matthew Hyzy, Thomas Ichim, Michael Freeman
BACKGROUND: Degenerative disc disease (DDD) is a common cause of lower back pain with radicular symptoms and has a significant socioeconomic impact given the associated disability. Limited effective conservative therapeutic options result in many turning to surgical alternatives for management, which vary in the rate of success and also carry an increased risk of morbidity and mortality associated with the procedures. Several animal based studies and a few human pilot studies have demonstrated safety and suggest efficacy in the treatment of DDD with mesenchymal stem cells (MSCs)...
September 22, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28900744/structural-vertebral-endplate-nomenclature-and-etiology-a-study-by-the-issls-spinal-phenotype-focus-group
#14
Uruj Zehra, Cora Bow, Jeffrey C Lotz, Frances M K Williams, S Rajasekaran, Jaro Karppinen, Keith D K Luk, Michele C Battiê, Dino Samartzis
PURPOSE: Vertebral endplate abnormalities may be associated with disc degeneration and, perhaps, pain generation. However, consensus definitions for endplate findings on spine MRI do not exist, posing a challenge to compare findings between studies and ethnic groups. The following survey was created to characterize the variability among the global spine community regarding endplate structural findings with respect to nomenclature and etiology. METHODS: A working group within the International Society for the Study of the Lumbar Spine (ISSLS) Spinal Phenotype Focus Group was established to assess the endplate phenotype...
September 12, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28870349/effect-of-axial-vertical-vibration-on-degeneration-of-lumbar-intervertebral-discs-in-modified-bipedal-rats-an-in-vivo-study
#15
Xiao Liang, Hao Shen, Wei-Dong Shi, Shan Ren, Wei Jiang, Hao Liu, Peng Yang, Zhi-Yong Sun, Jun Lin, Hui-Lin Yang
OBJECTIVE: To assess the effects of axial vibrations on gene expression and lumbar intervertebral disc degeneration in vivo. METHODS: A modified bipedal rat model was established using a brachial plexus rhizotomy approach to imitate human upright posture. The experimental animals were randomly divided into three groups: control, vertical vibration, and whole-body vibration. Gene expression in degeneration of the intervertebral discs was assessed by reverse transcription-quantitative polymerase chain reaction...
July 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28819598/two-staged-bilateral-femoral-alignment-osteotomy-with-concomitant-total-knee-arthroplasty-in-an-achondroplasia-patient-a-case-report
#16
Sebastian G Walter, Tobias Schwering, Stefan Preiss
INTRODUCTION: Achondroplasia is the most common form of dwarfism in humans and is orthopedically characterized by shortened extremities and an exaggerated lumbar lordosis. The surgical challenges are maintenance of axial alignment during limb lengthening as well as joint preservation and alignment restoration. CASE REPORT: We present a 46-year-old female suffering from achondroplasia with severe pain in both knees. Severe varus deformities of both femurs and degeneration of both knee joints became apparent on clinical and radiological examination...
March 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28799804/morphologic-features-of-spontaneous-annular-tears-and-disc-degeneration-in-the-aging-sand-rat-psammomys-obesus-obesus
#17
H E Gruber, E N Hanley
The sand rat, a member of the gerbil family, is a valuable small animal model in which intervertebral disc degeneration occurs spontaneously as the animal ages. Radiographic features of cervical and lumbar degeneration resemble those in human spines. We conducted a retrospective analysis of spines of 140 animals 3-41 months old focusing specifically on the presence of annular tears that are not visible by radiography and have not been described previously in the sand rat disc. During degeneration of the nucleus pulposus, notochordal cell death occurs and granular material, which stains with Alcian blue for proteoglycans, accumulates...
August 11, 2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/28767621/the-ute-disc-sign-on-mri-a-novel-imaging-biomarker-associated-with-degenerative-spine-changes-low-back-pain-and-disability
#18
Henry Pang, Cora Bow, Jason Pui Yin Cheung, Uruj Zehra, Arijitt Borthakur, Jaro Karppinen, Nozomu Inoue, Hai-Qiang Wang, Keith D K Luk, Kenneth M C Cheung, Dino Samartzis
STUDY DESIGN: Cross-sectional. OBJECTIVE: To assess the distribution of the ultra-short time-to-echo (UTE) Disc Sign (UDS).and its association with disc degeneration, other MRI phenotypes, pain and disability profiles. SUMMARY OF BACKGROUND DATA: Disc degeneration has been conventionally assessed by T2-weighted (T2W) signal intensity on MRI; however, its clinical utility has been questionable. UTE MRI assesses short T2 components. The authors have identified a new imaging biomarker on UTE - the UDS...
August 1, 2017: Spine
https://www.readbyqxmd.com/read/28756222/role-of-lncrna-tug1-in-intervertebral-disc-degeneration-and-nucleus-pulposus-cells-via-regulating-wnt-%C3%AE-catenin-signaling-pathway
#19
Jiang Chen, Yu-Song Jia, Gen-Zhe Liu, Qi Sun, Fan Zhang, Sheng Ma, Yong-Jun Wang
OBJECTIVE: To investigate the role of TUG1 in intervertebral disc degeneration (IDD) and human nucleus pulposus cells (NPCs) via regulating Wnt/β-catenin pathway. METHODS: The study collected nucleus pulposus (NP) tissue samples from 30 patients with lumbar disc herniation (LDH) (Case group) and 18 patients with lumbar spine trauma (Control group). NPCs induced by TNF-α in vitro were divided into Blank, Vector, TUG1, TUG1-siRNA, XAV-939, TUG1 + XAV-939 groups...
September 23, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28687401/pathophysiological-role-of-prostaglandin-e2-induced-up-regulation-of-the-ep2-receptor-in-motor-neuron-like-nsc-34-cells-and-lumbar-motor-neurons-in-als-model-mice
#20
Yasuhiro Kosuge, Hiroko Miyagishi, Yuki Yoneoka, Keiko Yoneda, Hiroshi Nango, Kumiko Ishige, Yoshihisa Ito
Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease characterized by selective degeneration of motor neurons. The primary triggers for motor neuronal death are still unknown, but inflammation is considered to be an important factor contributing to the pathophysiology of ALS both clinically and in ALS models. Prostaglandin E2 (PGE2) and its corresponding four E-prostanoid receptors play a pivotal role in the degeneration of motor neurons in human and transgenic models of ALS. It has also been shown that PGE2-EP2 signaling in glial cells (astrocytes or microglia) promotes motor neuronal death in G93A mice...
July 4, 2017: Neurochemistry International
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