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https://www.readbyqxmd.com/read/28642694/ehlers-danlos-syndrome-hypermobility-type-impact-of-somatosensory-orthoses-on-postural-control-a-pilot-study
#1
Emma G Dupuy, Pascale Leconte, Elodie Vlamynck, Audrey Sultan, Christophe Chesneau, Pierre Denise, Stéphane Besnard, Boris Bienvenu, Leslie M Decker
Elhers-Danlos syndrome (EDS) is the clinical manifestation of connective tissue disorders, and comprises several clinical forms with no specific symptoms and selective medical examinations which result in a delay in diagnosis of about 10 years. The EDS hypermobility type (hEDS) is characterized by generalized joint hypermobility, variable skin hyperextensibility and impaired proprioception. Since somatosensory processing and multisensory integration are crucial for both perception and action, we put forth the hypothesis that somatosensory deficits in hEDS patients may lead, among other clinical symptoms, to misperception of verticality and postural instability...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28640605/high-pressure-synthesis-crystal-structure-and-magnetic-and-transport-properties-of-a-six-layered-srrho3
#2
Yan Li, Jinguang Cheng, José Antonio Alonso, John B Goodenough, Jianshi Zhou
A SrRhO3 polytype with six-layered (6M) structure was synthesized under high pressure and high temperature. The crystal structure was obtained by refining X-ray powder diffraction with the monoclinic space group C2/c with lattice parameters a = 5.5650(1) Å, b = 9.5967(2) Å, c = 14.0224(4) Å, and β = 92.846(2)°. It is isostructural with SrIrO3 synthesized under ambient pressure and consists of dimers of the face-shared Rh(2)O6 octahedra connected by their vertices to the corner-shared Rh(1)O6 octahedra along the c axis with a stacking of SrO3 layers in the sequence of CCHCCH, where C and H denote cubic and hexagonal closed packing, respectively...
June 22, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28637153/dutch-version-of-the-fear-of-pain-questionnaire-for-adolescents-with-chronic-pain
#3
Carolien Dekker, Caroline H G Bastiaenen, Janneke E de Vries, Laura E Simons, Mariëlle E J B Goossens, Jeanine A M C F Verbunt
BACKGROUND: Fear of pain is important in the development and maintenance of chronic pain. The Fear of Pain Questionnaire-Child version has been developed to assess pain related fear in children and adolescents. OBJECTIVE: Translating the original questionnaire into Dutch, and investigating internal consistency and construct validity to enable use in the Dutch pain rehabilitation setting for treatment and research. METHODS: Cross-sectional validation study: After forward and back translation of the FOPQ-C, adolescents (11-22 years old) with chronic musculoskeletal pain completed an assessment containing the Dutch Fear of Pain Questionnaire, and questionnaires about demographics, pain catastrophizing, functional disability, and pain intensity...
March 3, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28636564/radiation-dosimetry-in-magnetic-fields-with-farmer-type-ionization-chambers-determination-of-magnetic-field-correction-factors-for-different-magnetic-field-strengths-and-field-orientations
#4
Claudia Katharina Spindeldreier, Oliver Schrenk, Anna Bakenecker, Iwan Kawrakow, Lucas Norberto Burigo, Christian P Karger, Steffen Greilich, Asja Pfaffenberger
The aim of this work was to determine magnetic field correction factors that are needed for dosimetry in hybrid devices for MR-guided radiotherapy for Farmer-type ionization chambers for different magnetic field strengths and field orientations. The response of six custom-built Farmer-type chambers irradiated at a 6 MV linac was measured in a water tank positioned in a magnet with magnetic field strengths between 0.0 T and 1.1 T. Chamber axis, beam and magnetic field were perpendicular to each other and both magnetic field directions were investigated...
June 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28625649/investigation-of-patterns-of-nodal-metastases-in-braf-mutant-lung-cancer
#5
S H McEvoy, D F Halpenny, A Viteri-Jusué, S A Hayes, A J Plodkowski, G J Riely, M S Ginsberg
Axillary lymph nodes (axLN) are a rare site of nodal metastases in patients with lung cancer. BRAF mutated lung cancer is a genetically distinct subtype that occurs in 2-5% of non-small cell lung carcinomas (NSCLC). A recent study identified a highly unusual pattern of metastatic spread to axLN in patients with BRAF mutated colorectal cancer (CRC). The purpose of the study is to assess the incidence of axLN metastases in BRAF mutated NSCLC. Baseline computed tomography (CT) imaging at diagnosis and all follow up CTs of patients with BRAF mutated NSCLC treated at our institution were retrospectively reviewed by two radiologists for evidence of axLN metastases...
June 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28623908/programmed-death-ligand-1-pd-l1-is-expressed-in-a-significant-number-of-the-uterine-cervical-carcinomas
#6
Opal L Reddy, Peter I Shintaku, Neda A Moatamed
BACKGROUND: The programmed death-1/programmed death-ligand-1 (PD-1/PD-L1) immune regulatory axis has emerged as a promising new target for cancer therapeutics, with lasting responses seen in the treatment of metastatic renal and lung carcinomas, as well as melanomas. As tumor surface expression of PD-L1 has been found to correlate with objective responses to anti-PD-L1 immunotherapies, we investigated the expression of PD-L1 in human cervical tumors and provide an adopted scoring system for the systematic evaluation of PD-L1 staining...
June 17, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28623286/trait-choice-profoundly-affected-the-ecological-conclusions-drawn-from-functional-diversity-measures
#7
Linhai Zhu, Bojie Fu, Huoxing Zhu, Cong Wang, Lei Jiao, Ji Zhou
Although trait choice is crucial to quantify functional diversity appropriately, the quantitative methods for it are rarely compared and discussed. Meanwhile, very little is known about how trait choice affects ecological conclusions drawn from functional diversity measures. We presented the four methods of trait selection as alternatives to the ordination axis-based method, which directly identify a subset of key traits to represent the main variation of all the traits. To evaluate their performance, we compared the closeness of association obtained by different methods between species richness and functional diversity indices (FAD, FD, Q, FDis) in the six ecosystems...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28623063/low-dose-out-of-field-radiotherapy-part-2-calculating-the-mean-photon-energy-values-for-the-out-of-field-photon-energy-spectrum-from-scattered-radiation-using-monte-carlo-methods
#8
A Skrobala, S Adamczyk, M Kruszyna-Mochalska, M Skórska, A Konefał, W Suchorska, K Zaleska, A Kowalik, W Jackowiak, J Malicki
PURPOSE: During radiotherapy, leakage from the machine head and collimator expose patients to out-of-field irradiation doses, which may cause secondary cancers. To quantify the risks of secondary cancers due to out-of-field doses, it is first necessary to measure these doses. Since most dosimeters are energy-dependent, it is essential to first determine the type of photon energy spectrum in the out-of-field area. The aim of this study was to determine the mean photon energy values for the out-of-field photon energy spectrum for a 6 MV photon beam using the GEANT 4-Monte Carlo method...
June 13, 2017: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/28622902/a-critical-analysis-of-sagittal-plane-deformity-correction-with-minimally-invasive-adult-spinal-deformity-surgery-a-2-year-follow-up-study
#9
Gregory M Mundis, Jay D Turner, Vedat Deverin, Juan S Uribe, Pierce Nunley, Praveen Mummaneni, Neel Anand, Paul Park, David O Okonkwo, Michael Y Wang, Shay Bess, Adam S Kanter, Richard Fessler, Stacie Nguyen, Behrooz A Akbarnia
INTRODUCTION: Sagittal plane realignment is important to achieve desirable clinical outcomes after adult spinal deformity (ASD) surgery. This study evaluates the impact of minimally invasive (MIS) techniques on sagittal plane alignment and clinical outcomes in ASD patients. METHODS: A retrospective, multi-center review of ASD patients (age ≥18 years, and with one of the following: coronal Cobb ≥20°, sagittal vertical axis [SVA] >5 cm, and/or pelvic tilt >25°), MIS surgery, and four or more levels instrumented...
July 2017: Spine Deformity
https://www.readbyqxmd.com/read/28619678/april-taci-axis-is-dispensable-for-the-immune-response-to-rabies-vaccination
#10
Shannon L Haley, Evgeni P Tzvetkov, Andrew G Lytle, Kishore R Alugupalli, Joseph R Plummer, James P McGettigan
There is significant need to develop a single-dose rabies vaccine to replace the current multi-dose rabies vaccine regimen and eliminate the requirement for rabies immune globulin in post-exposure settings. To accomplish this goal, rabies virus (RABV)-based vaccines must rapidly activate B cells to secrete antibodies which neutralize pathogenic RABV before it enters the CNS. Increased understanding of how B cells effectively respond to RABV-based vaccines may improve efforts to simplify post-exposure prophylaxis (PEP) regimens...
June 12, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28616371/tactile-sensing-with-whiskers-of-various-shapes-determining-the-three-dimensional-location-of-object-contact-based-on-mechanical-signals-at-the-whisker-base
#11
Lucie A Huet, John W Rudnicki, Mitra J Z Hartmann
Almost all mammals use their mystacial vibrissae (whiskers) as important tactile sensors. There are no sensors along the length of a whisker: all sensing is performed by mechanoreceptors at the whisker base. To use artificial whiskers as a sensing tool in robotics, it is essential to be able to determine the three-dimensional (3D) location at which a whisker has made contact with an object. With the assumption of quasistatic, frictionless, single-point contact, previous work demonstrated that the 3D contact point can be uniquely determined if all six components of force and moment are measured at the whisker base, but these measurements require a six-axis load cell...
June 1, 2017: Soft Robotics
https://www.readbyqxmd.com/read/28604944/the-influence-of-graves-orbitopathy-treatment-with-intravenous-glucocorticoids-on-adrenal-function
#12
Urszula Ambroziak, Gabriela Bluszcz, Tomasz Bednarczuk, Piotr Miśkiewicz
INTRODUCTION: Graves' orbitopathy (GO) is the commonest extrathyroidal feature of Graves' disease. For active, moderate to severe GO intravenous glucocorticoid pulse therapy (ivGCS) is the first-line treatment, which might be followed by oral glucocorticoid therapy. Glucocorticoid treatment, especially in the time of withdrawal, carries a risk of adrenal insufficiency. The aim of this study was to assess the pituitary-adrenal axis function in patients with GO before and at the cessation of ivGCS, and after further oral glucocorticoid therapy...
June 12, 2017: Endokrynologia Polska
https://www.readbyqxmd.com/read/28601630/risk-factors-for-cut-out-failure-of-gamma3-nails-in-treating-unstable-intertrochanteric-fractures-an-analysis-of-176-patients
#13
Shang-Wen Tsai, Chien-Fu Jeff Lin, Yun-Hsuan Tzeng, Chun-Cheng Lin, Ching-Kuei Huang, Ming-Chau Chang, Chao-Ching Chiang
BACKGROUND: Cut-out failure is one of the most common complications in the Gamma3 nail fixation system. The purpose of this retrospective study was to determine pre-operative or intra-operative risk factors for cut-out failure of lag screws in unstable, intertrochanteric fractures fixed with short Gamma3 nails. METHODS: One hundred and seventy-six patients over 60 years of age, with unstable intertrochanteric fractures (AO/OTA 31-A2, 31-A3) treated with short Gamma3 nails were included in this study...
June 7, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28593581/intraoperative-adjustment-of-alignment-under-valgus-stress-reduces-outliers-in-patients-undergoing-medial-opening-wedge-high-tibial-osteotomy
#14
Man Soo Kim, Jong Min Son, In Jun Koh, Ji Hoon Bahk, Yong In
INTRODUCTION: A considerable percentage of outliers with under- or over-correction continue to be reported despite precise preoperative planning and cautious intraoperative correction of lower limb alignment in medial opening-wedge high tibial osteotomy (MOWHTO). The purpose of this study was to determine whether our novel technique for the intraoperative adjustment of alignment under valgus stress reduces the number of outliers in patients undergoing MOWHTO compared to the conventional technique, which corrects alignment according to the cable method only...
June 7, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28587668/alterations-of-hair-cortisol-and-dehydroepiandrosterone-in-mother-infant-dyads-with-maternal-childhood-maltreatment
#15
K Schury, A M Koenig, D Isele, A L Hulbert, S Krause, M Umlauft, S Kolassa, U Ziegenhain, A Karabatsiakis, F Reister, H Guendel, J M Fegert, I-T Kolassa
BACKGROUND: Child maltreatment (CM) has severe effects on psychological and physical health. The hypothalamic-pituitary-adrenal (HPA) axis, the major stress system of the body, is dysregulated after CM. The analysis of cortisol and dehydroepiandrosterone (DHEA) in scalp hair presents a new and promising methodological approach to assess chronic HPA axis activity. This study investigated the effects of CM on HPA axis activity in the last trimester of pregnancy by measuring the two important signaling molecules, cortisol and DHEA in hair, shortly after parturition...
June 6, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28579570/a-charge-transfer-salt-composed-of-methyl-viologen-and-hexacyanidoferrate-ii
#16
Rikako Tanaka, Nobuyuki Matsushita
The methyl viologen dication, used under the name Paraquat as an agricultural reagent, is a well-known electron-acceptor species that can participate in charge-transfer (CT) interactions. The determination of the crystal structure of this species is important for accessing the CT interaction and CT-based properties. The title hydrated salt, bis(1,1'-dimethyl-4,4'-bipyridine-1,1'-diium) hexacyanidoferrate(II) octahydrate, (C12H14N2)2[Fe(CN)6]·8H2O or (MV)2[Fe(CN)6]·8H2O [MV(2+) is the 1,1'-dimethyl-4,4'-bipyridine-1,1'-diium (methyl viologen) dication], crystallizes in the space group P21/c with one MV(2+) cation, half of an [Fe(CN)6](4-) anion and four water molecules in the asymmetric unit...
June 1, 2017: Acta Crystallographica. Section C, Structural Chemistry
https://www.readbyqxmd.com/read/28573521/is-centrally-induced-alveolar-bone-loss-in-a-large-animal-model-preventable-by-peripheral-hormone-substitution
#17
Maciej J K Simon, Frank Timo Beil, Pia Pogoda, Eik Vettorazzi, Iain Clarke, Michael Amling, Ralf Oheim
OBJECTIVES: Alveolar bone structures are mostly investigated in small animal models. The majority of these studies examined local influences on the alveolar bone, but only a few examined systemic influencing factors. The hypothalamic-pituitary axis is known to be essential for a vital bone balance. The aim of this study was to analyse the effects that selective hormone treatments have on alveolar bone structure and quality in a sheep model for alveolar bone loss, induced by hypothalamic-pituitary disconnection (HPD)...
June 2, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28570094/femoral-torsion-impact-of-femur-position-on-ct-and-stereoradiography-measurements
#18
Gérard Morvan, Henri Guerini, Grégory Carré, Valérie Vuillemin
OBJECTIVE: The purpose of this study is to evaluate stereoradiographic measurements of femoral torsion with different femoral positions, in comparison with CT measurements, with use of the current standard axial-slice technique. We hypothesize that CT measurements vary with femoral spatial positioning because of the resulting projection onto the CT plane, whereas stereoradiographic measurements, which are derived from a 3D reconstruction of the femur, remain constant. MATERIALS AND METHODS: Both in vitro and in vivo studies were conducted...
June 1, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28562617/taxonomy-based-analysis-of-force-exchanges-during-object-grasping-and-manipulation
#19
Sandra Martin-Brevet, Nathanaël Jarrassé, Etienne Burdet, Agnès Roby-Brami
The flexibility of the human hand in object manipulation is essential for daily life activities, but remains relatively little explored with quantitative methods. On the one hand, recent taxonomies describe qualitatively the classes of hand postures for object grasping and manipulation. On the other hand, the quantitative analysis of hand function has been generally restricted to precision grip (with thumb and index opposition) during lifting tasks. The aim of the present study is to fill the gap between these two kinds of descriptions, by investigating quantitatively the forces exerted by the hand on an instrumented object in a set of representative manipulation tasks...
2017: PloS One
https://www.readbyqxmd.com/read/28558692/the-feasibility-and-efficacy-of-implementing-a-focused-cardiac-ultrasound-course-into-a-medical-school-curriculum
#20
Sergio L Kobal, Yotam Lior, Alon Ben-Sasson, Noah Liel-Cohen, Ori Galante, Lior Fuchs
BACKGROUND: Teaching cardiac ultrasound to medical students in a brief course is a challenge. We aimed to evaluate the feasibility of teaching large groups of medical students the acquisition and interpretation of cardiac ultrasound images using a pocket ultrasound device (PUD) in a short, specially designed course. METHODS: Thirty-one medical students in their first clinical year participated in the study. All were novices in the use of cardiac ultrasound. The training consisted of 4 hours of frontal lectures and 4 hours of hands-on training...
May 30, 2017: BMC Medical Education
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