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https://www.readbyqxmd.com/read/27933108/postural-orientation-and-equilibrium-processes-associated-with-increased-postural-sway-in-autism-spectrum-disorder-asd
#1
Zheng Wang, Rami R Hallac, Kaitlin C Conroy, Stormi P White, Alex A Kane, Amy L Collinsworth, John A Sweeney, Matthew W Mosconi
BACKGROUND: Increased postural sway has been repeatedly documented in children with autism spectrum disorder (ASD). Characterizing the control processes underlying this deficit, including postural orientation and equilibrium, may provide key insights into neurophysiological mechanisms associated with ASD. Postural orientation refers to children's ability to actively align their trunk and head with respect to their base of support, while postural equilibrium is an active process whereby children coordinate ankle dorsi-/plantar-flexion and hip abduction/adduction movements to stabilize their upper body...
2016: Journal of Neurodevelopmental Disorders
https://www.readbyqxmd.com/read/27932978/gender-specific-re-organization-of-resting-state-networks-in-older-age
#2
Aimée Goldstone, Stephen D Mayhew, Izabela Przezdzik, Rebecca S Wilson, Joanne R Hale, Andrew P Bagshaw
Advancing age is commonly associated with changes in both brain structure and function. Recently, the suggestion that alterations in brain connectivity may drive disruption in cognitive abilities with age has been investigated. However, the interaction between the effects of age and gender on the re-organization of resting-state networks is not fully understood. This study sought to investigate the effect of both age and gender on intra- and inter-network functional connectivity (FC) and the extent to which resting-state network (RSN) node definition may alter with older age...
2016: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/27932332/the-anterolateral-capsule-of-the-knee-behaves-like-a-sheet-of-fibrous-tissue
#3
Daniel Guenther, Amir A Rahnemai-Azar, Kevin M Bell, Sebastián Irarrázaval, Freddie H Fu, Volker Musahl, Richard E Debski
BACKGROUND: The function of the anterolateral capsule of the knee has not been clearly defined. However, the contribution of this region of the capsule to knee stability in comparison with other anterolateral structures can be determined by the relative force that each structure carries during loading of the knee. PURPOSE/HYPOTHESIS: The purpose of this study was to determine the forces in the anterolateral structures of the intact and anterior cruciate ligament (ACL)-deficient knee in response to an anterior tibial load and internal tibial torque...
December 8, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27929514/evaluation-of-kidney-motion-and-target-localization-in-abdominal-sbrt-patients
#4
Marcus Sonier, William Chu, Nafisha Lalani, Darby Erler, Patrick Cheung, Renee Korol
The purpose of this study was to evaluate bilateral kidney and target translational/rotational intrafraction motion during stereotactic body radiation therapy treatment delivery of primary renal cell carcinoma and oligometastatic adrenal lesions for patients immobilized in the Elekta BodyFIX system. Bilateral kidney motion was assessed at midplane for 30 patients immobilized in a full-body dual-vacuum-cushion system with two patients immobilized via abdominal compression. Intrafraction motion was assessed for 15 patients using kilovoltage cone-beam computed tomography (kV-CBCT) datasets (n = 151) correlated to the planning CT...
November 8, 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/27929469/the-colon-26-carcinoma-tumor-bearing-mouse-as-a-model-for-the-study-of-cancer-cachexia
#5
Andrea Bonetto, Joseph E Rupert, Rafael Barreto, Teresa A Zimmers
Cancer cachexia is the progressive loss of skeletal muscle mass and adipose tissue, negative nitrogen balance, anorexia, fatigue, inflammation, and activation of lipolysis and proteolysis systems. Cancer patients with cachexia benefit less from anti-neoplastic therapies and show increased mortality(1). Several animal models have been established in order to investigate the molecular causes responsible for body and muscle wasting as a result of tumor growth. Here, we describe methodologies pertaining to a well-characterized model of cancer cachexia: mice bearing the C26 carcinoma(2-4)...
November 30, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27928870/balance-evaluation-in-haemophilic-preadolescent-patients-using-nintendo-wii-balance-board-%C3%A2
#6
S Pérez-Alenda, J J Carrasco, M Aguilar-Rodríguez, L Martínez-Gómez, M Querol-Giner, R Cuesta-Barriuso, A Torres-Ortuño, F Querol
INTRODUCTION: Alterations in the musculoskeletal system, especially in the lower limbs, limit physical activity and affect balance and walking. Postural impairments in haemophilic preteens could increase the risk of bleeding events and deteriorate the physical condition, promoting the progression of haemophilic arthropathy. AIM: This study aims to evaluate static postural balance in haemophilic children, assessed by means of the Wii Balance Board(®) (WBB). METHODS: Nineteen children with haemophilia and 19 without haemophilia aged 9-10 years, have participated in this study...
December 8, 2016: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/27928549/switching-the-rate-and-pattern-of-cell-division-for-neural-tube-closure
#7
Yosuke Ogura, Yasunori Sasakura
The morphogenetic movement associated with neural tube closure (NTC) requires both positive and negative regulations of cell proliferation. The dual requirement of cell division control during NTC underscores the importance of the developmental control of cell division. In the chordate ascidian, midline fusions of the neural ectoderm and surface ectoderm (SE) proceed in the posterior-to-anterior direction, followed by a single wave of asynchronous and patterned cell division in SE. Before NTC, SE exhibits synchronous mitoses; disruption of the synchrony causes a failure of NTC...
2016: Neurogenesis (Austin, Tex.)
https://www.readbyqxmd.com/read/27928404/evaluation-of-choroidal-thickness-in-non-arteritic-anterior-ischaemic-optic-neuropathy-at-the-acute-and-chronic-stages
#8
Saban Gonul, Sansal Gedik, Bengu Ekinci Koktekir, Kamil Yavuzer, Suleyman Okudan
The objective of this study was to evaluate the measurements of choroidal thickness (CT) in patients with non-arteritic anterior ischaemic optic neuropathy (NAION) at the acute and chronic stages. This case-control study compares three groups: Group 1 included 23 eyes of 23 patients with chronic NAION, Group 2 consisted of 24 eyes of 24 patients with acute NAION, and Group 3 included 24 eyes of 24 age-matched control subjects. The average CTs for Group 1, Group 2, and Group 3 were 261.24 ± 50.04, 280.05 ± 74...
August 2016: Neuro-ophthalmology
https://www.readbyqxmd.com/read/27927497/acute-renal-infarction-after-lateral-lumbar-interbody-spinal-fusion-for%C3%A2-kyphoscoliosis
#9
Sanjeev J Suratwala, MaryAnne Cronin, Katelyn Kondra, Vincent Leone
STUDY DESIGN: Case report. OBJECTIVES: Case report of acute renal infarction following lateral interbody fusion with posterior instrumentation for adult lumbar kyphoscoliosis. SUMMARY OF BACKGROUND DATA: This is the first reported renal infarction following minimally invasive lateral interbody fusion and posterior spinal instrumentation. METHODS: We report a case of acute renal infarction in a 72-year-old woman following direct lateral interbody fusion (DLIF) with percutaneous pedicle screw and rod fixation from L1 to L5 for correction of kyphoscoliosis...
September 2016: Spine Deformity
https://www.readbyqxmd.com/read/27926756/cutting-and-decellularization-of-multiple-corneal-stromal-lamellae-for-the-bioengineering-of-endothelial-grafts
#10
Zhiguo He, Fabien Forest, Aurélien Bernard, Anne-Sophie Gauthier, Romain Montard, Michel Peoc'h, Clotilde Jumelle, Emilie Courrier, Chantal Perrache, Philippe Gain, Gilles Thuret
Purpose: Engineered corneal endothelial grafts able to provide numerous functional endothelial cells for the restoration of corneal transparency would be a worthwhile way of replacing donor tissue, which is extremely scarce. The grafts are simply constructed: a biocompatible thin and transparent carrier colonized by a monolayer of cultured endothelial cells (ECs). Here we describe a process able to obtain appropriate carriers by recycling human corneas unsuitable for graft in their original state, but liable to provide multiple thin lamellae when cut with a femtosecond laser as used in refractive surgery...
December 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27923692/a-hemodynamic-directed-approach-to-pediatric-cardiopulmonary-resuscitation-hd-cpr-improves-survival
#11
Ryan W Morgan, Todd J Kilbaugh, Wesley Shoap, George Bratinov, Yuxi Lin, Ting-Chang Hsieh, Vinay M Nadkarni, Robert A Berg, Robert M Sutton
AIM: Most pediatric in-hospital cardiac arrests (IHCAs) occur in ICUs where invasive hemodynamic monitoring is frequently available. Titrating cardiopulmonary resuscitation (CPR) to the hemodynamic response of the individual improves survival in preclinical models of adult cardiac arrest. The objective of this study was to determine if titrating CPR to systolic blood pressure (SBP) and coronary perfusion pressure (CoPP) in a pediatric porcine model of asphyxia-associated ventricular fibrillation (VF) IHCA would improve survival as compared to traditional CPR...
December 3, 2016: Resuscitation
https://www.readbyqxmd.com/read/27922457/daily-physical-activity-in-total-hip-arthroplasty-patients-undergoing-different-surgical-approaches-a-cohort-study
#12
Monika Engdal, Olav A Foss, Kristin Taraldsen, Vigdis S Husby, Siri B Winther
OBJECTIVE: Muscle weakness due to trauma from the surgical approach is anticipated to affect the ability of the patient to undertake daily physical activity early after total hip arthroplasty (THA). The objective of this study was to compare daily physical activity on days 1 to 4 after discharge, in patients following THA performed by 1 of 3 surgical approaches. DESIGN: A cohort study included 60 hip osteoarthritis patients, scheduled for THA, allocated to direct lateral approach, posterior approach, or anterior approach...
December 2, 2016: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/27921067/parallel-pathways-from-whisker-and-visual-sensory-cortices-to-distinct-frontal-regions-of-mouse-neocortex
#13
Varun Sreenivasan, Alexandros Kyriakatos, Celine Mateo, Dieter Jaeger, Carl C H Petersen
The spatial organization of mouse frontal cortex is poorly understood. Here, we used voltage-sensitive dye to image electrical activity in the dorsal cortex of awake head-restrained mice. Whisker-deflection evoked the earliest sensory response in a localized region of primary somatosensory cortex and visual stimulation evoked the earliest responses in a localized region of primary visual cortex. Over the next milliseconds, the initial sensory response spread within the respective primary sensory cortex and into the surrounding higher order sensory cortices...
July 2017: Neurophotonics
https://www.readbyqxmd.com/read/27920731/do-you-read-how-i-read-systematic-individual-differences-in-semantic-reliance-amongst-normal-readers
#14
Anna M Woollams, Matthew A Lambon Ralph, Gaston Madrid, Karalyn E Patterson
The extent to which meaning is involved in reading aloud has proven an area of longstanding debate, and current computational models differ on this dimension. The connectionist triangle model proposes that normal individuals rely on semantic information for correct reading of words with atypical spelling-sound relationships, but to varying degrees. This proposed individual difference would account for the varying stage of decline at which patients with semantic dementia first show the reading impairment known as surface dyslexia...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27919864/taxonomy-for-the-rehabilitation-of-knee-conditions-trak-a-digital-intervention-to-support-the-self-care-components-of-anterior-cruciate-ligament-rehabilitation-protocol-of-a-feasibility-study
#15
Emma Dunphy, Fiona L Hamilton, Kate Button
BACKGROUND: Rupture of the anterior cruciate ligament (ACL) is common, especially in the active population. In defining the problem of ACL rehabilitation, this study draws from the knowledge that improved self-care, strength, and fitness are associated with better outcomes. Traditional rehabilitation involves regular physiotherapy, but it is not clear what the optimal way for delivering rehabilitation is, and it varies widely across the world. Evidence for treatments are discussed in the literature, however standard length of rehabilitation and frequency of appointments are unknown...
December 5, 2016: JMIR Research Protocols
https://www.readbyqxmd.com/read/27919763/feasibility-of-telementoring-for-micro-neurosurgical-procedures-utilizing-a-microscope-a-proof-of-concept-study
#16
Bryan Ladd, Ryan D Tackla, Akshay Gupte, David Darrow, Jeffery Sorenson, Mario Zuccarello, Andrew W Grande
BACKGROUND: Our pilot study evaluated the effectiveness of our telementoring-telescripting model to facilitate seamless communication between surgeons while the operating surgeon is under microscope. METHODS: As a first proof of concept, 4 students identified 20 anatomical landmarks on a dry human skull with or without telementoring guidance. To assess the ability to communicate operative information, a senior neurosurgery resident evaluated the student's ability and timing to complete a stepwise craniotomy on a cadaveric head, with and without telementoring guidance; a second portion included exposure of the anterior circulation...
December 2, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27919706/extreme-lateral-lumbar-interbody-fusion-surgical-technique-outcomes-and-complications-after-a-minimum-of-one-year-follow-up
#17
I Domínguez, R Luque, M Noriega, J Rey, J Alia, F Marco-Martínez
«Minimally invasive» techniques have been recently been developed in order to achieve good clinical results with a low incidence of complications. The extralateral interbody fusion or direct transpsoas is a minimally invasive anterior arthrodesis. A total of 97 patients with 138 segments received surgery between May 2012 and May 2015. The follow-up was from 12-44 months. The mean age was 68 years (41-86). The most common cause of intervention was the adjacent segment (30%), deformity (22%), and lumbar disc disease (21%)...
December 2, 2016: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/27917562/putamen-functional-connectivity-during-inhibitory-control-in-smokers-and-non-smokers
#18
Sophie E A Akkermans, Maartje Luijten, Daan van Rooij, Ingmar H A Franken, Jan K Buitelaar
The putamen has been shown to play a key role in inhibitory control and addiction, and consists of distinct subregions associated with distinct functions. The anterior putamen is thought to be specialized in goal-directed control or response-monitoring in connection with frontal regions, whereas the posterior part is specialized in habitual or automatic responding in connection with sensorimotor regions. The present study is the first to delineate functional networks of the anterior and posterior putamen in a Go-NoGo response inhibition task, and to examine differences between smokers (n = 25) and non-smokers (n = 23) within these networks...
December 5, 2016: Addiction Biology
https://www.readbyqxmd.com/read/27917528/the-ultimate-signal-to-noise-ratio-in-realistic-body-models
#19
Bastien Guérin, Jorge F Villena, Athanasios G Polimeridis, Elfar Adalsteinsson, Luca Daniel, Jacob K White, Lawrence L Wald
PURPOSE: We compute the ultimate signal-to-noise ratio (uSNR) and G-factor (uGF) in a realistic head model from 0.5 to 21 Tesla. METHODS: We excite the head model and a uniform sphere with a large number of electric and magnetic dipoles placed at 3 cm from the object. The resulting electromagnetic fields are computed using an ultrafast volume integral solver, which are used as basis functions for the uSNR and uGF computations. RESULTS: Our generalized uSNR calculation shows good convergence in the sphere and the head and is in close agreement with the dyadic Green's function approach in the uniform sphere...
December 4, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/27915117/from-intentions-to-actions-neural-oscillations-encode-motor-processes-through-phase-amplitude-and-phase-amplitude-coupling
#20
Etienne Combrisson, Marcela Perrone-Bertolotti, Juan Lp Soto, Golnoush Alamian, Philippe Kahane, Jean-Philippe Lachaux, Aymeric Guillot, Karim Jerbi
Goal-directed motor behavior is associated with changes in patterns of rhythmic neuronal activity across widely distributed brain areas. In particular, movement initiation and execution are mediated by patterns of synchronization and desynchronization that occur concurrently across distinct frequency bands and across multiple motor cortical areas. To date, motor-related local oscillatory modulations have been predominantly examined by quantifying increases or suppressions in spectral power. However, beyond signal power, spectral properties such as phase and phase-amplitude coupling (PAC) have also been shown to carry information with regards to the oscillatory dynamics underlying motor processes...
November 30, 2016: NeuroImage
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