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https://www.readbyqxmd.com/read/28822824/using-spinopelvic-parameters-to-estimate-residual-lumbar-lordosis-assuming-previous-lumbosacral-fusion-a-study-of-normative-values
#1
Hwee Weng Dennis Hey, Kimberly-Anne Tan, Shashidhar Bangalore Kantharajanna, Alex Quok An Teo, Chloe Xiaoyun Chan, Ka-Po Gabriel Liu, Hee-Kit Wong
BACKGROUND CONTEXT: Pelvic Incidence (PI) = Pelvic Tilt (PT) + Sacral Slope (SS) is an established trigonometric equation which can be expanded from studying the fixed pelvis with the spine to a fixed spinopelvic complex with the remnant spine, in scenarios of spinopelvic fusion or ankylosis. For a fixed spinopelvic complex, we propose the equation termed: Lumbar Incidence (LI) = Lumbar Tilt (LT) + Lumbar Slope (LS). PURPOSE: To establish reference values for LI, LT and LS at each lumbar vertebral level, and to show how LI can be used to determine rLL...
August 16, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28821966/application-of-transcutaneous-ultrasonography-for-the-diagnosis-of-muscle-mass-loss-in-patients-with-liver-cirrhosis
#2
Kazufumi Kobayashi, Hitoshi Maruyama, Soichiro Kiyono, Sadahisa Ogasawara, Eiichiro Suzuki, Yoshihiko Ooka, Tetsuhiro Chiba, Naoya Kato, Tadashi Yamaguchi
BACKGROUND: To propose an ultrasound-based parameter for the diagnosis of muscle mass loss (MML) in cirrhosis. METHODS: This is an IRB-approved cross-sectional study (October 2013 to January 2017) with written informed consent including 357 subjects-234 cirrhosis and 123 controls. MML was diagnosed using the skeletal muscle index at the L3 level (L3-SMI) on computed tomography (CT). Transcutaneous ultrasound was used to demonstrate a cross section of the right iliopsoas muscle, and the iliopsoas muscle index (IP index) was defined by the iliopsoas muscle area/height(2) (mm(2)/m(2))...
August 18, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28802716/presence-of-modic-type-1-change-increases-risk-of-postoperative-pyogenic-discitis-following-decompression-surgery-for-lumbar-canal-stenosis
#3
Ken Ninomiya, Nobuyuki Fujita, Naobumi Hosogane, Tomohiro Hikata, Kota Watanabe, Osahiko Tsuji, Narihito Nagoshi, Mitsuru Yagi, Shinjiro Kaneko, Yasuyuki Fukui, Takahiro Koyanagi, Tateru Shiraishi, Takashi Tsuji, Masaya Nakamura, Morio Matsumoto, Ken Ishii
STUDY DESIGN: Multicenter retrospective study. BACKGROUND: Postoperative surgical site infection is one of the most serious complications following spine surgery. Previous studies do not appear to have investigated pyogenic discitis following lumbar laminectomy without discectomy. This study aimed to identify risk factors for postoperative pyogenic discitis following lumbar decompression surgery. METHODS: We examined data from 2721 patients undergoing lumbar laminectomy without discectomy in five hospitals from April 2007 to March 2012...
August 10, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28796017/sarcopenia-prevalence-and-impact-on-operative-and-oncologic-outcomes-in-the-multimodal-management-of-locally-advanced-esophageal-cancer
#4
Jessie A Elliott, Suzanne L Doyle, Conor F Murphy, Sinead King, Emer M Guinan, Peter Beddy, Narayanasamy Ravi, John V Reynolds
OBJECTIVE: The aim of this article was to study the prevalence and significance of sarcopenia in the multimodal management of locally advanced esophageal cancer (LAEC), and to assess its independent impact on operative and oncologic outcomes. SUMMARY OF BACKGROUND DATA: Sarcopenia in cancer may confer negative outcomes, but its prevalence and impact on modern multimodal regimens for LAEC have not been systematically studied. METHODS: Two hundred fifty-two consecutive patients were studied...
August 8, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28789852/recombinant-calponin-of-human-filariid-brugia-malayi-secondary-structure-and-immunoprophylactic-potential
#5
Shiv K Verma, Ashish Arora, P Kalpana Murthy
In the search for potential vaccine candidates for the control of human lymphatic filariasis, we recently identified calponin-like protein, that regulates actin/myosin interactions, in a proinflammatory fraction F8 (45.24-48.64kDa) of Brugia malayi adult worms. In the present study, the gene was cloned, expressed, and the recombinant Calponin of B. malayi (r-ClpBm) was prepared and characterized. r-ClpBm bears homology with OV9M of Onchocerca volvulus, a non-lymphatic filariid that causes loss of vision and cutaneous pathology...
August 5, 2017: Vaccine
https://www.readbyqxmd.com/read/28780152/functional-genomic-exploration-reveals-that-ss-riok-1-is-essential-for-the-development-and-survival-of-strongyloides-stercoralis-larvae
#6
Wang Yuan, Huan Zhou, James B Lok, Weiqiang Lei, Siyuan He, Robin B Gasser, Rui Zhou, Rui Fang, Yanqin Zhou, Junlong Zhao, Min Hu
Protein kinase RIOK-1 is a non-ribosomal factor essential for rRNA cleavage and ribosome small subunit maturation. It is encoded in all eukaryotic organisms. The RIOK-1 encoding gene of Caenorhabditis elegans (Ce-riok-1) is expressed in the neuronal and reproductive systems in larvae and adults of this free-living nematode, and it supports larval growth and development of the adult gonad. In spite of its recognised roles in model organisms such as C. elegans, little is known about the function of this molecule in parasitic nematodes...
August 3, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28777063/comprehensive-biomechanical-analysis-of-three-reconstruction-techniques-following-total-sacrectomy-an-in-vitro-human-cadaveric-model
#7
Mohamed Macki, Rafael De la Garza-Ramos, Ashley A Murgatroyd, Kenneth P Mullinix, Xiaolei Sun, Bryan W Cunningham, Brandon A McCutcheon, Mohamad Bydon, Ziya L Gokaslan
OBJECTIVE Aggressive sacral tumors often require en bloc resection and lumbopelvic reconstruction. Instrumentation failure and pseudarthrosis remain a clinical concern to be addressed. The objective in this study was to compare the biomechanical stability of 3 distinct techniques for sacral reconstruction in vitro. METHODS In a human cadaveric model study, 8 intact human lumbopelvic specimens (L2-pelvis) were tested for flexion-extension range of motion (ROM), lateral bending, and axial rotation with a custom-designed 6-df spine simulator as well as axial compression stiffness with the MTS 858 Bionix Test System...
August 4, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28770402/kinematic-efficacy-of-supplemental-anterior-lumbar-interbody-fusion-at-lumbosacral-levels-in-thoracolumbosacral-deformity-correction-with-and-without-pedicle-subtraction-osteotomy-at-l3-an-in-vitro-cadaveric-study
#8
Benny T Dahl, Jonathan A Harris, Manasa Gudipally, Mark Moldavsky, Saif Khalil, Brandon S Bucklen
PURPOSE: Pedicle subtraction osteotomy (PSO) is performed to treat rigid, sagittal spinal deformities, but high rates of implant failure are reported. Anterior lumbar interbody fusion has been proposed to reduce this risk, but biomechanical investigation is lacking. The goal of this study was to quantify the (1) destabilizing effects of a lumbar osteotomy and (2) contribution of anterior lumbar interbody fusion (ALIF) at the lumbosacral junction as recommended in literature. METHODS: Fourteen fresh human thoracolumbosacral spines (T12-S1) were tested in flexion-extension (FE), lateral bending (LB), and axial rotation (AR)...
August 2, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28764746/percutaneous-endoscopic-lumbar-discectomy-minimally-invasive-technique-for-multiple-episodes-of-lumbar-disc-herniation
#9
Kyung-Chul Choi, Jin-Sung Kim, Dong Chan Lee, Choon-Keun Park
BACKGROUNDS: Although open lumbar discectomy is a gold standard surgical technique for lumbar disc herniation (LDH), surgery-induced tissue injury may actually become a source of postsurgical pain. Percutaneous endoscopic lumbar discectomy (PELD) is introduced as a minimal invasive spinal technique for LDH. The PELD has gained popularity and shown successful results. The authors report the clinical usefulness of the PELD technique in two patients with the serial multilevel LDHs. CASE PRESENTATIONS: A 32-year-old man suffered from radicular pain at the L5 dermatome due to the down migrated soft LDH at the L4-5 level...
August 1, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28762133/origins-and-neurochemical-characteristics-of-porcine-intervertebral-disc-sympathetic-innervation-a-preliminary-report
#10
Monika Barczewska, Judyta Juranek, Joanna Wojtkiewicz
Intervertebral disc diseases (IVDDs) form a group of a vertebral column disorders affecting a large number of people worldwide. It is estimated that approximately 30% of individuals at the age of 35 and approximately 90% of individuals at the age of 60 and above will have some form of disc-affecting pathological changes leading to disc herniation, prolapse and degeneration as well as discogenic pain. Here, we aimed to establish the origins and neurochemical characteristics of porcine intervertebral disc sympathetic innervation involved in pain signalling in IVDD patients...
July 31, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28762109/dual-lumbar-bronchogenic-and-arachnoid-cyst-presenting-with-sciatica-and-left-foot-drop
#11
Nicholas Candy, Adam Young, Abel Devadass, Andrew Dean, Jason McMillen, Rikin Trivedi
INTRODUCTION: Spinal bronchogenic cysts are rare findings, with only four cases of lumbar bronchogenic cysts reported in the literature. All of these bronchogenic cysts involved the conus medullaris. We present the first case of a lumbar bronchogenic cyst and arachnoid cyst arising from the cauda equina in a 68-year-old male. Uniquely, this bronchogenic cyst also contained components of an arachnoid cyst. METHODS: Magnetic resonance imaging (MRI) demonstrated a compressive cystic lesion at the level of the L3 vertebra splaying the cauda equina...
July 31, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28761530/contribution-of-the-xenograft-bone-plate-screw-system-in-lumbar-transpedicular-stabilization-an-in-vivo-study-in-dogs
#12
Sani Sarigul, Hakan Salci, Huseyin Lekesiz, Seref Dogan, Resat Ozcan, Osman Sacit Gorgul, Kaya Aksoy
OBJECTIVES: Xenograft bone plate-screws (XBPSs) can be alternative tools in lumbar transpedicular stabilization (TS). The aim of this study was to show biomechanical and histopathological contribution of the XBPSs system in lumbar TS. MATERIALS AND METHODS: Fifteen (n = 15) hybrid dog and ten (n = 10) L2-4 cadaveric specimens were included in the study. The dogs were separated according to surgical techniques: L3 laminectomy and bilateral facetectomy (LBF) in Group I (experimental group [EG I] (n = 5), L3 LBF plus TS with metal plate-screws (MPSs) in Group II (EG II) (n = 5), and L3 LBF plus TS with XBPSs in Group III (EG III) (n = 5)...
July 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28761432/effects-of-pulsed-radiofrequency-on-spasticity-in-patients-with-spinal-cord-injury-a-report-of-two-cases
#13
Min Cheol Chang, Yun Woo Cho
Spasticity following spinal cord injury (SCI) results in functional deterioration and reduced quality of life. Herein, we report two SCI patients who presented with good response to pulsed radiofrequency (PRF) for the management of spasticity in the lower extremities. Patient 1 (a 47-year-old man) had complete thoracic cord injury and showed a phasic spasticity on the extensor of both knees (3-4 beats clonus per every 30 seconds) and tonic spasticity (Modified Ashworth Scale: 3) on both hip adductors. Patient 2 (a 64-year-old man) had incomplete cervical cord injury and showed a right ankle clonus (approximately 20 beats) when he walked...
June 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28761373/chronic-constriction-injury-of-sciatic-nerve-changes-circular-rna-expression-in-rat-spinal-dorsal-horn
#14
Song Cao, Wenwen Deng, Ying Li, Bangyong Qin, Lin Zhang, Shouyang Yu, Peng Xie, Zhi Xiao, Tian Yu
BACKGROUND: Mechanisms of neuropathic pain are still largely unknown. Molecular changes in spinal dorsal horn may contribute to the initiation and development of neuropathic pain. Circular RNAs (circRNAs) have been identified as microRNA sponges and involved in various biological processes, but whether their expression profile changes in neuropathic pain condition is not reported. METHODS: To test whether neuropathic pain influences circRNA expression, we developed a sciatic chronic constriction injury (CCI) model in rats...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28760892/in-vitro-isolation-and-characterization-of-oxazolidinone-resistant-mycobacterium-tuberculosis
#15
Matthew B McNeil, Devon Dennison, Catherine Shelton, Tanya Parish
Oxazolidinones are promising candidates for the treatment of Mycobacterium tuberculosis infections. We isolated linezolid resistant strains from H37Rv (Euro-American) and HN878 (East-Asian) strains; resistance frequency was similar in both strains. Mutations were identified in ribosomal protein L3 (RplC) and the 23S rRNA (rrl). All mutant strains were cross resistant to sutezolid; a subset were cross-resistant to chloramphenicol. Mutations in rrl led to growth impairment and decreased fitness that could limit spread in clinical settings...
July 31, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28760038/fully-endoscopic-lumbar-interbody-fusion-using-a-percutaneous-unilateral-biportal-endoscopic-technique-technical-note-and-preliminary-clinical-results
#16
Dong Hwa Heo, Sang Kyu Son, Jin Hwa Eum, Choon Keun Park
OBJECTIVE Minimally invasive spine surgery can minimize damage to normal anatomical structures. Recently, fully endoscopic spine surgeries have been attempted for lumbar fusion surgery. In this study, the authors performed a percutaneous unilateral biportal endoscopic (UBE) technique as a minimally invasive surgery for lumbar fusion. The purpose of this study is to present the UBE technique of fully endoscopic lumbar interbody fusion (LIF) and to analyze the clinical results. METHODS Patients who were to undergo single-level fusion surgery from L3-4 to L5-S1 were enrolled...
August 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28759478/the-effects-of-orientation-of-lumbar-facet-joints-on-the-facet-joint-contact-forces-an-in-vitro-biomechanical-study
#17
Xiang Liu, Zhiping Huang, Ruozhou Zhou, Qingan Zhu, Wei Ji, Yaowu Long, Jixing Wang
STUDY DESIGN: A biomechanical human cadaveric study. OBJECTIVE: The aim of this study was to measure L2-L3 facet joint contact forces in a flexibility test using thin film electroresistive sensors, and facet joint orientation on CT scan images, to examine the effects of orientation of lumbar facet joint on the facet joint contact forces. SUMMARY OF BACKGROUND DATA: Biomechanically the bilateral facet joints play a critical role in maintaining stability of the lumbar spine by sharing load...
July 28, 2017: Spine
https://www.readbyqxmd.com/read/28757011/presence-and-mechanisms-of-acquired-antimicrobial-resistance-in-belgian-brachyspira-hyodysenteriae-isolates-belonging-to-different-clonal-complexes
#18
M Mahu, F Pasmans, K Vranckx, N De Pauw, L Vande Maele, Philip Vyt, Tamara Vandersmissen, A Martel, F Haesebrouck, F Boyen
Swine dysentery (SD) is an economically important disease for which antimicrobial treatment still occupies an important place to control outbreaks. However, acquired antimicrobial resistance is increasingly observed in Brachyspira hyodysenteriae. In this study, the Minimal Inhibitory Concentrations (MIC) of six antimicrobial compounds for 30 recent Belgian B. hyodysenteriae isolates were determined using a broth microdilution method. In addition, relevant regions of the 16S rRNA, 23S rRNA and the L3 protein encoding genes were sequenced to reveal mutations associated with acquired resistance...
August 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28755695/preimaginal-exposure-to-azadirachtin-affects-food-selection-and-digestive-enzymes-in-adults-of-drosophila-melanogaster-diptera-drosophilidae
#19
Samira Kilani-Morakchi, Radia Bezzar-Bendjazia, Maroua Ferdenache, Nadia Aribi
Among the plant derived product, azadirachtin, a neem-based insecticide, is exceptional in having a broad range of bioactivity including toxicity, growth, development and reproduction effects, repellency and antifeedancy. If considerable progress on the physiological and biological activities and agricultural application of azadirachtin has been achieved, its exact mechanism of action remains uncertain. In this study, we aimed at assessing the lethal and sublethal behavioral and physiological effects of azadirachtin on Drosophila melanogaster Meigen, 1830 (Diptera: Drosophilidae) as biological model...
August 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28755011/impact-of-chiropractic-manipulation-on-bone-and-skeletal-muscle-of-ovariectomized-rats
#20
A López-Herradón, R Fujikawa, M Gómez-Marín, J P Stedile-Lovatel, F Mulero, J A Ardura, P Ruiz, I Muñoz, P Esbrit, I Mahíllo-Fernández, A Ortega-de Mues
Evidence suggests that chiropractic manipulation might exert positive effects in osteoporotic patients. The aim of this study was to evaluate the effects of chiropractic manipulation on bone structure and skeletal muscle in rats with bone loss caused by ovariectomy (OVX). The 6-month old Sprague-Dawley rats at 10 weeks following OVX or sham operation (Sh) did not suffer chiropractic manipulation (NM group) or were submitted to true chiropractic manipulation using the chiropractic adjusting instrument Activator V(®) three times/week for 6 weeks as follows: Force 1 setting was applied onto the tibial tubercle of the rat right hind limb (TM group), whereas the corresponding left hind limb received a false manipulation (FM group) consisting of ActivatorV(®) firing in the air and slightly touching the tibial tubercle...
July 28, 2017: Calcified Tissue International
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