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https://www.readbyqxmd.com/read/29156339/silicification-process-in-diatom-algae-using-different-silicon-chemical-sources-colloidal-silicic-acid-interactions-at-cell-surface
#1
Silvia Casabianca, Antonella Penna, Samuela Capellacci, Michela Cangiotti, Maria Francesca Ottaviani
The silicon transport and use inside cells are key processes for understanding how diatoms metabolize this element in the silica biogenic cycle in the ocean. A spin-probe electron paramagnetic resonance (EPR) study over time helped to investigate the interacting properties and the internalization mechanisms of silicic acid from different silicon sources into the cells. Diatom cells were grown in media containing biogenic amorphous substrates, such as diatomaceous earth and sponge spicules, and crystalline sodium metasilicate...
November 14, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29119044/nursing-review-of-diagnosis-and-treatment-of-lumbar-degenerative-spondylolisthesis
#2
Nancy E Epstein, Renee D Hollingsworth
Background: In the lumbar spine, degenerative spondylolisthesis or degenerative (not traumatic) slippage of one vertebral body over another is divided into 4 grades - grade I (25%), grade II (50%), grade III (75%), and grade IV (100%). Dynamic X-rays, magnetic resonance (MR), and computed tomography (CT) scans document the slip secondary to arthritic changes of the facet joint plus stenosis, ossification of the yellow ligament, disc herniations, and synovial cysts. MR best demonstrates soft tissue pathology whereas CT better delineates ossific/calcified disease...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29096996/normal-tension-glaucoma-has-normal-intracranial-pressure-a-prospective-study-of-intracranial-pressure-and-intraocular-pressure-in-different-body-positions
#3
Christina Lindén, Sara Qvarlander, Gauti Jóhannesson, Elias Johansson, Fanny Östlund, Jan Malm, Anders Eklund
PURPOSE: To test the hypothesis that normal-tension glaucoma (NTG) is caused by an increased pressure difference across the lamina cribrosa (LC) related to a low intracranial pressure (ICP). DESIGN: Prospective case-control study. PARTICIPANTS: Thirteen NTG patients (9 women; median 71 [range: 56-83] years) were recruited for investigation with the same protocol as 11 healthy volunteers (8 women; 47 [30-59] years). A larger control group (n = 51; 30 women; 68 [30-81] years) was used only for ICP comparison in supine position...
October 30, 2017: Ophthalmology
https://www.readbyqxmd.com/read/29094238/computational-wear-assessment-of-hard-on-hard-hip-implants-subject-to-physically-demanding-tasks
#4
R Nithyaprakash, S Shankar, M S Uddin
Hip implants subject to gait loading due to occupational activities are potentially prone to failures such as osteolysis and aseptic loosening, causing painful revision surgeries. Highly risky gait activities such as carrying a load, stairs up or down and ladder up or down may cause excessive loading at the hip joint, resulting in generation of wear and related debris. Estimation of wear under the above gait activities is thus crucial to design and develop a new and improved implant component. With this motivation, this paper presents an assessment of wear generation of PCD-on-PCD (poly crystalline diamond) hip implants using finite element (FE) analysis...
November 2, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29091150/maintenance-of-exercise-training-benefits-is-associated-with-adequate-milk-and-dairy-products-intake-in-elderly-hypertensive-subjects-following-detraining
#5
Wilson Max Almeida Monteiro de Moraes, Neucilane Silveira Dos Santos, Larissa Pereira Aguiar, Luís Gustavo Oliveira de Sousa
OBJECTIVE: To investigate whether maintenance of exercise training benefits is associated with adequate milk and dairy products intake in hypertensive elderly subjects after detraining. METHODS: Twenty-eight elderly hypertensive patients with optimal clinical treatment underwent 16 weeks of multicomponent exercise training program followed by 6 weeks of detraining, and were classified according to milk and dairy products intake as low milk (<3 servings) and high milk (≥3 servings) groups...
July 2017: Einstein
https://www.readbyqxmd.com/read/29089736/early-experience-with-laparoscopic-management-of-nonpalpable-undescended-testes
#6
Okechukwu Hyginus Ekwunife, Victor Ifeanyichukwu Modekwe, Jideofor Okechukwu Ugwu, Chuka Abunike Ugwunne
BACKGROUND: Nonpalpable undescended testes (NPT) constitute 20%-30% of undescended testes, and its management has been a challenge both in diagnosis and treatment. Worldwide, laparoscopy is the current gold standard of management. In Nigeria, the management of NPT has largely been by open surgery with consequent high morbidity. In Nigeria, the trend is changing from a largely open management with its attendant high morbidity, to laparoscopic management which is the current worldwide gold standard of care...
July 2017: Nigerian Journal of Surgery: Official Publication of the Nigerian Surgical Research Society
https://www.readbyqxmd.com/read/29084022/glittre-adl-multiple-tasks-induce-similar-dynamic-hyperinflation-with-different-metabolic-and-ventilatory-demands-in-patients-with-copd
#7
Aline Almeida Gulart, Anelise Bauer Munari, Caroline Tressoldi, Karoliny Dos Santos, Manuela Karloh, Anamaria Fleig Mayer
PURPOSE: This cross-sectional study compared the physiological responses and dynamic hyperinflation (DH) of the Glittre-ADL test (TGlittre) and its specific tasks in patients with chronic obstructive pulmonary disease (COPD). METHODS: Thirty patients with COPD performed the TGlittre. The individual tasks included stand up and sit down (TSS); climb up and down stairs (TSTAIRS); walk on a flat surface (TWALK); and move objects onto and off a shelf (TSHELF). While performing these tasks, the physiological responses were evaluated and inspiratory capacity measured before and immediately after the tests...
November 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/29081630/estimation-of-clean-and-centered-brain-network-atlases-using-diffusive-shrinking-graphs-with-application-to-developing-brains
#8
Islem Rekik, Gang Li, Weili Lin, Dinggang Shen
Many methods have been developed to spatially normalize a population of brain images for estimating a mean image as a population-average atlas. However, methods for deriving a network atlas from a set of brain networks sitting on a complex manifold are still absent. Learning how to average brain networks across subjects constitutes a key step in creating a reliable mean representation of a population of brain networks, which can be used to spot abnormal deviations from the healthy network atlas. In this work, we propose a novel network atlas estimation framework, which guarantees that the produced network atlas is clean (for tuning down noisy measurements) and well-centered (for being optimally close to all subjects and representing the individual traits of each subject in the population)...
June 2017: Information Processing in Medical Imaging: Proceedings of the ... Conference
https://www.readbyqxmd.com/read/29081426/bilateral-vestibulopathy-diagnostic-criteria-consensus-document-of-the-classification-committee-of-the-b%C3%A3-r%C3%A3-ny-society
#9
Michael Strupp, Ji-Soo Kim, Toshihisa Murofushi, Dominik Straumann, Joanna C Jen, Sally M Rosengren, Charles C Della Santina, Herman Kingma
This paper describes the diagnostic criteria for bilateral vestibulopathy (BVP) by the Classification Committee of the Bárány Society. The diagnosis of BVP is based on the patient history, bedside examination and laboratory evaluation. Bilateral vestibulopathy is a chronic vestibular syndrome which is characterized by unsteadiness when walking or standing, which worsen in darkness and/or on uneven ground, or during head motion. Additionally, patients may describe head or body movement-induced blurred vision or oscillopsia...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29061865/prolonged-leg-bending-impairs-endothelial-function-in-the-popliteal-artery
#10
Lauren K Walsh, Robert M Restaino, Luis A Martinez-Lemus, Jaume Padilla
Uninterrupted sitting blunts vascular endothelial function in the lower extremities; however, the factors contributing to this impairment remain largely unknown. Herein, we tested the hypothesis that prolonged flexion of the hip and knee joints, as it occurs during sitting, and associated low shear stress and disturbed (i.e., turbulent) blood flow caused by arterial bending, impairs endothelial function at the popliteal artery. Bilateral measurements of popliteal artery flow-mediated dilation (FMD) were performed in 12 healthy subjects before and after a 3-h lying-down period during which one leg was bent (i...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29037615/six-weeks-of-mat-pilates-training-are-enough-to-improve-functional-capacity-in-elderly-women
#11
Josefina Bertoli, Grazieli Maria Biduski, Cíntia de la Rocha Freitas
The aim of the study was to evaluate the effect of Mat Pilates on the functional capacity (FC) of elderly women before and after six weeks of intervention. Eighteen women aged 62.28 (±2.34) participated in the study. Timed Up and Go test, Timed Up Stairs, Timed Down Stairs, 30-s Chair Stand, Chair Sit-and-Reach and Back Scratch tests were assessed. The results showed significant improvements in all FC tests after six weeks of the Mat Pilates intervention. Summarizing, only six weeks of Mat Pilates training of 60 min per session, three times a week, three series beginning with six repetitions and eight repetitions at the last two weeks of intervention, were enough to improve FC in elderly women...
October 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29037184/low-back-pain-and-causative-movements-in-pregnancy-a-prospective-cohort-study
#12
Saori Morino, Mika Ishihara, Fumiko Umezaki, Hiroko Hatanaka, Hirotaka Iijima, Mamoru Yamashita, Tomoki Aoyama, Masaki Takahashi
BACKGROUND: Low back pain (LBP) during pregnancy might be strongly related to posture and movements of the body, and its management is a clinically important issue. The purpose of this study was to investigate the activities related to LBP during pregnancy. METHODS: Participants included 275 women before 12 weeks of pregnancy. The women were evaluated at 12, 24, 30, and 36 weeks of pregnancy. The intensity of LBP was assessed using the Numerical Rating Scale (NRS)...
October 16, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29033862/the-impact-of-bodily-states-on-divergent-thinking-evidence-for-a-control-depletion-account
#13
Yanyun Zhou, Yifei Zhang, Bernhard Hommel, Hao Zhang
Given previous evidence that bodily states can impact basic cognitive processes, we asked whether such impact can also be demonstrated for creative cognition. In particular, we had participants perform a design improvement task and a consequences imagination task while standing up, walking in a predetermined pattern, or walking freely. Results show better divergent-thinking performance with unconstrained than with constrained walking, and better performance for walking than for standing. A second experiment assessed performance in an alternative uses task and a figural combination task while participants were lying, sitting, or standing...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28990877/parents-descriptions-of-young-children-s-dissociative-reactions-after-trauma
#14
Gabriela Cintron, Alison Salloum, Zoe Blair-Andrews, Eric A Storch
There is limited research on the phenomenology of how young children who have been exposed to trauma express the intrusive symptom of dissociative reactions. The current qualitative study utilized interviews from a semi-structured diagnostic clinical interview with 74 caregivers of young children (ages 3 to 7) who were exposed to trauma to identify parents' descriptions of their children's dissociative reactions during a clinical interview. Based on results from the interview, 45.9% of the children had dissociative reactions (8...
October 9, 2017: Journal of Trauma & Dissociation
https://www.readbyqxmd.com/read/28959033/temperature-dependent-sex-reversal-by-a-transformer-2-gene-edited-mutation-in-the-spotted-wing-drosophila-drosophila-suzukii
#15
Jianwei Li, Alfred M Handler
Female to male sex reversal was achieved in an emerging agricultural insect pest, Drosophila suzukii, by creating a temperature-sensitive point mutation in the sex-determination gene, transformer-2 (tra-2), using CRISPR/Cas9 (clustered regularly interspaced palindromic repeats/CRISPR-associated) homology-directed repair gene-editing. Ds-tra-2 (ts2) mutants developed as normal fertile XX and XY adults at permissive temperatures below 20 °C, but at higher restrictive temperatures (26 to 29 °C) chromosomal XX females developed as sterile intersexuals with a predominant male phenotype, while XY males developed with normal morphology, but were sterile...
September 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28937858/our-mother-s-mitochondria-and-our-mind
#16
Peter Kramer, Paola Bressan
Most of the energy we get to spend is furnished by mitochondria, minuscule living structures sitting inside our cells or dispatched back and forth within them to where they are needed. Mitochondria produce energy by burning down what remains of our meal after we have digested it, but at the cost of constantly corroding themselves and us. Here we review how our mitochondria evolved from invading bacteria and have retained a small amount of independence from us; how we inherit them only from our mother; and how they are heavily implicated in learning, memory, cognition, and virtually every mental or neurological affliction...
September 1, 2017: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
https://www.readbyqxmd.com/read/28937096/sit-down-with-the-experts
#17
(no author information available yet)
No abstract text is available yet for this article.
September 22, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28930627/fitness-body-composition-and-vascular-health-in-adolescent-and-young-adult-survivors-of-paediatric-brain-cancer-and-cranial-radiotherapy
#18
Treya M Long, Shoshana R Rath, Tessa D Maroni, Karen E Wallman, Helen C Atkinson, Nicholas G Gottardo, Catherine H Cole, Catherine S Choong, Louise H Naylor
Background Survivors of paediatric brain cancer and/or cranial radiotherapy (CRT) are at an increased risk of developing serious comorbidities. Established risk factors for chronic disease include central obesity, endothelial abnormalities and diminished fitness. Objectives Here we characterised anthropometry, body composition, bone mineral density (BMD), heart rate (HR), blood pressure (BP), endothelial function, muscular strength and endurance and aerobic fitness in adolescent and young adult (AYA) survivors...
September 20, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28920051/comparison-of-1-and-2-minute-sitting-positions-versus-immediately-lying-down-on-hemodynamic-variables-after-spinal-anesthesia-with-hyperbaric-bupivacaine-in-elective-cesarean-section
#19
Pooran Hajian, Mahshid Nikooseresht, Tayebe Lotfi
BACKGROUND: Hypotension is one of the most common complications of spinal anesthesia in parturients undergoing cesarean section. In this regard, the patient's position may affect the incidence of hypotension. OBJECTIVES: In this clinical trial, we evaluated the effects of 1- and 2-minute sitting positions versus immediately lying down after spinal anesthesia on hypotension and vasopressor requirements. METHODS: A total of 72 parturients, scheduled for cesarean section under spinal anesthesia, were randomly divided into 3 groups (24 subjects per group)...
April 2017: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/28918008/a-finite-element-study-on-the-mechanical-response-of-the-head-neck-interface-of-hip-implants-under-realistic-forces-and-moments-of-daily-activities-part-2
#20
Khosro Fallahnezhad, Hamidreza Farhoudi, Reza H Oskouei, Mark Taylor
A finite element model was developed to investigate the effect of loading regimes caused by various daily activities on the mechanical behaviour of the head-neck taper junction in modular hip replacements. The activities included stair up, stair down, sit to stand, stand to sit, one leg standing and knee bending. To present the real mechanical environment of the junction, in addition to the force components, the frictional moments produced by the frictional sliding of the head and cup were applied to a CoCr/CoCr junction having a 12/14 taper with a proximal mismatch angle of 0...
September 7, 2017: Journal of the Mechanical Behavior of Biomedical Materials
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