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Byron J Schneider, Zachary McCormick, David O'Brien, Michael Bunch, Clark C Smith
No abstract text is available yet for this article.
March 14, 2018: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
Robert Foerster, B C John Cho, Daniel K Fahim, Peter C Gerszten, John C Flickinger, Inga S Grills, Maha S Jawad, C Ronald Kersh, Daniel Létourneau, Frederick Mantel, Arjun Sahgal, John H Shin, Brian A Winey, Matthias Guckenberger
BACKGROUND: Stereotactic body radiotherapy (SBRT) of the spine provides superior tumor control, but vertebral compression fractures are increased and the pathophysiological process underneath is not well understood. Data on histopathological changes, particularly after salvage SBRT (sSBRT) following conventional irradiation, are scarce. OBJECTIVE: To investigate surgical specimens after sSBRT and primary SBRT (pSBRT) regarding histopathological changes. METHODS: We assessed 704 patients treated with spine SBRT 2006 to 2012...
March 14, 2018: Neurosurgery
Hannah M Carl, A Karim Ahmed, Nancy Abu-Bonsrah, Rafael De la Garza Ramos, Eric W Sankey, Zachary Pennington, Ali Bydon, Timothy F Witham, Jean-Paul Wolinsky, Ziya L Gokaslan, Justin M Sacks, C Rory Goodwin, Daniel M Sciubba
OBJECTIVE Resection of metastatic spine tumors can improve patients' quality of life by addressing pain or neurological compromise. However, resections are often complicated by wound dehiscence, infection, instrumentation failures, and the need for reoperation. Moreover, when reoperations are needed, the most common indication is surgical site infection and wound breakdown. In turn, wound reoperations increase morbidity as well as the length and cost of hospitalization. The aim of this study was to examine perioperative risk factors associated with increased rate of wound reoperations after metastatic spine tumor resection...
March 16, 2018: Journal of Neurosurgery. Spine
Manisha B Walunj, Arun A Tanpure, Seergazhi G Srivatsan
Pd-catalyzed C-C bond formation, an important vertebra in the spine of synthetic chemistry, is emerging as a valuable chemoselective transformation for post-synthetic functionalization of biomacromolecules. While methods are available for labeling protein and DNA, development of an analogous procedure to label RNA by cross-coupling reactions remains a major challenge. Herein, we describe a new Pd-mediated RNA oligonucleotide (ON) labeling method that involves post-transcriptional functionalization of iodouridine-labeled RNA transcripts by using Suzuki-Miyaura cross-coupling reaction...
March 13, 2018: Nucleic Acids Research
Meng Wu, Mengya Chen, Yubo Ma, Jiajia Yang, Renfang Han, Yaping Yuan, Xingxing Hu, Mengmeng Wang, Xu Zhang, Shengqian Xu, Rui Liu, Guangming Jiang, Jianhua Xu, Zongwen Shuai, Yanfeng Zou, Guixia Pan, Faming Pan
BACKGROUND: Current findings regarding serum Dickkopf-1 (DKK-1) concentration in ankylosing spondylitis (AS) have proven inconsistent. This meta-analysis was performed to provide a better understanding of serum DKK-1 and AS. METHODS: Online electronic databases were used to retrieve all relevant articles published before November 2017. The pooled standardized mean difference (SMD) with 95% confidence interval (CI) was calculated by the random-effect model. RESULTS: 23 studies, containing 1348 AS patients and 909 healthy controls, were included in this meta-analysis...
March 12, 2018: Clinica Chimica Acta; International Journal of Clinical Chemistry
Nicolien A Van Vliet, Raymond Noordam, Jan B Van Klinken, Rudi G J Westendorp, J H Duncan Bassett, Graham R Williams, Diana Van Heemst
With population aging, prevalence of low bone mineral density (BMD) and associated fracture risk are increased. To determine whether low circulating thyroid stimulating hormone (TSH) levels within the normal range are causally related to BMD, we conducted a two-sample Mendelian randomization (MR) study. Furthermore, we tested whether common genetic variants in the TSH receptor (TSHR) gene and genetic variants influencing expression of TSHR (eQTLs) are associated with BMD. For both analyses, we used summary-level data of genome-wide association studies (GWAS) investigating BMD of the femoral neck (N = 32,735) and the lumbar spine (N = 28,498) in cohorts of European ancestry from the Genetic Factors of Osteoporosis (GEFOS) Consortium...
March 15, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
Sarah H Peterson, Joshua T Ackerman, Collin A Eagles-Smith, Mark P Herzog, C Alex Hartman
Predators sample the available prey community when foraging; thus, changes in the environment may be reflected by changes in predator diet and foraging preferences. We examined Forster's tern (Sterna forsteri) prey species over an 11-year period by sampling approximately 10,000 prey fish returned to 17 breeding colonies in south San Francisco Bay, California. We compared the species composition among repeatedly-sampled colonies (≥ 4 years), using both relative species abundance and the composition of total dry mass by species...
2018: PloS One
D Burkard, T Beckett, E Kourtjian, C Messingschlager, R Sipahi, M Padley, J Stubbart
Teriparatide is an anabolic therapy used to treat patients with osteoporosis and is only approved for 2 years of treatment. This is the first study to look at two common osteoporosis drugs in maintaining its beneficial effects: denosumab and zoledronic acid. Denosumab treatment was associated with the greatest increase in bone mineral density (BMD) at the femoral neck and lumbar spine, an amount that was statistically greater than no treatment and zoledronic acid treatment. INTRODUCTION: Teriparatide, a hallmark treatment for osteoporosis, has been shown to increase BMD and bone turnover...
March 14, 2018: Osteoporosis International
Xiaoming Liu, Fumin Pan, Zhaoyu Ba, Shanjin Wang, Desheng Wu
BACKGROUND: Diabetes mellitus (DM) and low back pain which is mainly caused by degeneration of the intervertebral discs (IVDs) both are major public health problem worldwide. The present study was designed to investigate the association between type 2 diabetes mellitus (T2D) and severity of lumbar disc degeneration (LDD). METHODS: We retrospectively reviewed patients with low back pain visiting our spine clinic in 2014. Low back pain patients all have the lumbar MRI imaging and no previous treatment...
March 14, 2018: Journal of Orthopaedic Surgery and Research
Nitin Agarwal, Georgios A Zenonos, Prateek Agarwal, Frank J Walch, Eileen Roach, Sandra J Stokes, Robert M Friedlander, Peter C Gerszten
BACKGROUND: Pharmacological prophylaxis for venous thromboembolism (VTE) in the neurosurgical population is still a matter of debate, as the risk-to-benefit ratio is not well defined. OBJECTIVE: To further evaluate the risk-to-benefit ratio of VTE prophylaxis (VTEP) for all neurosurgical procedures. METHODS: A prospective evaluation was performed after the initiation of a VTEP protocol for 11 436 patients undergoing neurosurgical procedures over 24 mo...
March 9, 2018: Neurosurgery
Micheal Raad, Amit Jain, Brian J Neuman, Hamid Hassanzadeh, Munish C Gupta, Douglas C Burton, Gregory M Mundis, Virginie Lafage, Eric O Klineberg, Richard A Hostin, Christopher P Ames, Shay Bess, Daniel M Sciubba, Khaled M Kebaish
STUDY DESIGN: Retrospective analysis of prospective registry OBJECTIVE.: To investigate associations of preoperative narcotic use with outcomes after adult spinal deformity (ASD) surgery. SUMMARY OF BACKGROUND DATA: We hypothesized that preoperative narcotic use would predict longer hospital stays, greater postoperative narcotic use, and greater disability 2 years after ASD surgery. METHODS: A multicenter database of surgical ASD patients was analyzed retrospectively for patients with self-reported data on preoperative narcotic use...
March 13, 2018: Spine
Helle Km Bergholdt, Morten K Larsen, Anette Varbo, Børge G Nordestgaard, Christina Ellervik
BACKGROUND: Whether a causal relationship exists between milk intake and reduced risk of fractures is unclear. OBJECTIVES: We tested the hypothesis that genetically determined milk intake reduces the risk of fractures and increases bone mineral density(BMD). METHODS: We investigated the association between milk intake, LCT-13910 C/T (rs4988235) which is associated with lactase persistence (TT/TC) in Northern Europeans, and hip fractures in three Danish prospective studies(N=97,811,age ≥20 years)...
March 14, 2018: Journal of Internal Medicine
X Sun, L Xu, Z H Chen, X Chen, C Z Du, S Li, Z Liu, B P Qian, B Wang, Z Z Zhu, Y Qiu
Objective: To evaluate the correction result of traditional dual growing rods on apical vertebral rotation. Methods: This study recruited 19 early-onset scoliosis patients (6 boys and 13 girls) who had received traditional dual growing rods treatment at Department of Spine Surgery, Nanjing Drum Tower Hospital from January 2009 to July 2015. The age at initial surgery was (5.7±1.7)years(range, 3 to 9 years). Measurements of primary curve magnitude, height of T(1)-S(1), apical vertebral translation(AVR), apical vertebral body-rib ratio, apical vertebral rotation, thoracic rotation and rib hump were compared between pre-operatively, post-operatively, and at latest follow-up, through a paired- t test...
March 1, 2018: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
Satomi Shiraishi, Michael P Grams, Luis E Fong de Los Santos
PURPOSE: To demonstrate an objective quality control framework for the image review process. METHODS AND MATERIALS: 927 cone-beam computed tomography (CBCT) registrations were retrospectively analyzed for 33 bilateral head and neck cancer patients who received definitive radiotherapy. Two registration tracking volumes (RTVs) - cervical spine (C-spine) and mandible - were defined, within which a similarity metric was calculated and used as a registration quality tracking metric over the course of treatment...
March 12, 2018: Medical Physics
Daniel Novick, Raina Wallace, Jody C DiGiacomo, Anand Kumar, Steven Lev, L D George Angus
BACKGROUND: The newest CT scanners provide resolution comparable to MRIs leading many to question when and whether cervical spine MRIs are warranted. METHODS: An 8 year retrospective review identified 241 patients who underwent CT scan and MRI of the cervical spine. The initial clinical examination, cervical spine CT scan, and cervical spine MRI were compared to identify cervical spine injuries that would have been missed had the MRI not been performed. RESULTS: The CT scans were normal in 153 patients, and abnormal in 88...
March 6, 2018: American Journal of Surgery
Michael J Moses, Jared C Tishelman, Saqib Hasan, Peter L Zhou, Ioanna Zevgaras, Justin S Smith, Aaron J Buckland, Yong Kim, Afshin Razi, Themistocles S Protopsaltis
STUDY DESIGN: Cross-Sectional Study. OBJECTIVE: The goal of this study is to investigate how surgeons differ in collar and narcotic use, as well as return to driving recommendations following cervical spine surgeries and the associated medico-legal ramifications of these conditions. SUMMARY OF BACKGROUND DATA: Restoration of quality of life is one of the main goals of cervical spine surgery. Patients frequently inquire when they may safely resume driving after cervical spine surgery...
March 9, 2018: Spine
D Diaz-Aguilar, T Niu, S Terterov, R Scharnweber, A Tucker, J Woodard, H Brara, C Merna, H Shah, S Wang, S Rahman
Background: Neurenteric cysts (NECs) are rare developmental malformations of the central nervous system (CNS) which originate as benign congenital lesions. They originate from developmental foregut precursors, and are presumed to be the result of abnormal partitioning of the embryonic notochord plate. Such NECs predominantly arise in the cervical region in patients around 6 years of age or in their twenties or thirties. Notably, NECs of the conus medullaris are exceedingly rare, especially in patients of advanced age...
2018: Surgical Neurology International
Hao Yin, Guang Han, Qiang Li, Xuejun He, Congyang Wang
OBJECTIVE: This research aimed to gain a better understanding of the relationship between cervical posterior open-door laminoplasty on axial symptoms, the net cross-sectional area of paraspinal muscles, and the degree of pimelosis. METHOD: A retrospective study was conducted on a consecutive series of 37 patients who had underwent cervical posterior open-door laminoplasty + lateral mass fixation and bone graft fusion between January 2015 and July 2015. All patients received postoperative examinations at 6 months and 18 months after the operation...
March 9, 2018: Zeitschrift Für Orthopädie und Unfallchirurgie
Mariska C Vlot, Marlous L Grijsen, Jan M Prins, Renate T de Jongh, Robert de Jonge, Martin den Heijer, Annemieke C Heijboer
INTRODUCTION: Previous studies indicate that human immunodeficiency virus (HIV)-infection and combination antiretroviral therapy (cART) can affect bone turnover. Furthermore, HIV-infected patients have lower bone mineral density (BMD) compared to a healthy reference population. OBJECTIVE: To evaluate the longitudinal effect of HIV-infection and cART on bone turnover markers (BTMs) and BMD in men with primary HIV-infection (PHI). DESIGN, METHODS: Thirty-five PHI-men were divided into two groups, those that received cART for the first time (n = 26) versus no-cART (n = 9)...
2018: PloS One
Lifu Sheng, Iryna Leshchyns'ka, Vladimir Sytnyk
The neural cell adhesion molecule 2 (NCAM2) is encoded by a gene on chromosome 21 in humans. NCAM2 accumulates in synapses, but its role in regulation of synapse formation remains poorly understood. We demonstrate that an increase in NCAM2 levels results in increased instability of dendritic protrusions and reduced conversion of protrusions to dendritic spines in mouse cortical neurons. NCAM2 overexpression induces an increase in the frequency of submembrane Ca2+ spikes localized in individual dendritic protrusions and promotes propagation of submembrane Ca2+ spikes over segments of dendrites or the whole dendritic tree...
March 7, 2018: Cerebral Cortex
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