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https://www.readbyqxmd.com/read/28822327/improvements-in-balance-control-in-individuals-with-pcs-detected-following-vestibular-training-a-case-study
#1
Alyssa Prangley, Mathew Aggerholm, Michael Cinelli
Concussed individuals have been found to experience balance deficits in the anterior-posterior (AP) direction as indicated by greater Center of Pressure (COP) displacement and velocity. One possible reason for this change in balance control could be due to damage to the lateral vestibulospinal tract which sends signals to control posterior muscles, specifically ankle extensors leading to compensatory torques about the ankle. The purpose of the study was to quantify balance assessments in individuals experiencing persistent post-concussion symptoms (PCS) to determine balance control changes following a vestibular training intervention...
August 8, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28822316/improved-middle-ear-soft-tissue-visualization-using-synchrotron-radiation-phase-contrast-imaging
#2
Mai Elfarnawany, Seyed Alireza Rohani, Soroush Ghomashchi, Daniel G Allen, Ning Zhu, Sumit K Agrawal, Hanif M Ladak
High resolution images are used as a basis for finite-element modeling of the middle-ear structures to study their biomechanical function. Commonly used imaging techniques such as micro-computed tomography (CT) and optical microscopy require extensive sample preparation, processing or staining using contrast agents to achieve sufficient soft-tissue contrast. We compare imaging of middle-ear structures in unstained, non-decalcified human temporal bones using conventional absorption-contrast micro-CT and using synchrotron radiation phase-contrast imaging (SR-PCI)...
August 5, 2017: Hearing Research
https://www.readbyqxmd.com/read/28822302/new-insight-in-spiral-drawing-analysis-methods-application-to-action-tremor-quantification
#3
André Pierre Legrand, Isabelle Rivals, Aliénor Richard, Emmanuelle Apartis, Emmanuel Roze, Marie Vidailhet, Sabine Meunier, Elodie Hainque
OBJECTIVE: Spiral drawing is one of the standard tests used to assess tremor severity for the clinical evaluation of medical treatments. Tremor severity is estimated through visual rating of the drawings by movement disorders experts. Different approaches based on the mathematical signal analysis of the recorded spiral drawings were proposed to replace this rater dependent estimate. The objective of the present study is to propose new numerical methods and to evaluate them in terms of agreement with visual rating and reproducibility...
July 17, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28822143/-research-progress-of-rapid-detection-of-ochratoxin-a-and-its-application-prospect-in-traditional-chinese-medicine
#4
REVIEW
Shu-Rong Hu, Guang-Yao Ying, Yu-Li Hu, Shi-Hai Yang, Mei-Hua Yang
Ochratoxin A (OTA) is a toxic secondary metabolite mainly produced by Aspergillus and Penicillium species, with strong renal toxicity, teratogenic, carcinogenic, mutagenic effect. Studies have shown that OTA is not only widely contaminated in food and feed crops, but also has been widely contaminated in Chinese herbal medicines such as spices, licorice and so on. In view of OTA's universality and harmfulness, this paper summarizes the flow visualization test strip, microsphere, electrochemical sensor, surface enhanced Raman spectroscopy technology in OTA rapid detection, which provides reference for the research and application of high throughout detection instrument miniaturization in order to achieve OTA quick detection and simple operation...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28822141/applicability-of-quantitative-optical-imaging-techniques-for-intraoperative-perfusion-diagnostics-a-comparison-of-laser-speckle-contrast-imaging-sidestream-dark-field-microscopy-and-optical-coherence-tomography
#5
Sanne M Jansen, Daniel M de Bruin, Dirk J Faber, Iwan J G G Dobbe, Erik Heeg, Dan M J Milstein, Simon D Strackee, Ton G van Leeuwen
Patient morbidity and mortality due to hemodynamic complications are a major problem in surgery. Optical techniques can image blood flow in real-time and high-resolution, thereby enabling perfusion monitoring intraoperatively. We tested the feasibility and validity of laser speckle contrast imaging (LSCI), optical coherence tomography (OCT), and sidestream dark-field microscopy (SDF) for perfusion diagnostics in a phantom model using whole blood. Microvessels with diameters of 50, 100, and 400  μm were constructed in a scattering phantom...
August 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28822108/semi-quantitative-metabolic-values-on-fdg-pet-ct-including-extracardiac-sites-of-disease-as-a-predictor-of-treatment-course-in-patients-with-cardiac-sarcoidosis
#6
Mitsutomi Ishiyama, Laurie A Soine, Hubert J Vesselle
BACKGROUND: Cardiac sarcoidosis is associated with major adverse cardiac events including cardiac arrest, for which anti-inflammatory treatment is indicated. Oral corticosteroid is the mainstay among treatment options; however, adverse effects are a major concern with long-term use. It would be beneficial for providers to predict treatment response and prognosis for proper management strategy of sarcoidosis, though it remains challenging. Fluorine (F)-18 fluorodeoxyglucose (FDG)-positron emission tomography(PET)/computed tomography(CT) has an advantage over anatomical imaging in providing semi-quantitative functional parameters such as standard uptake value (SUV), metabolic volume, and total lesion glycolysis (TLG), which are well-established biomarkers in oncology...
August 18, 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28822038/translocator-protein-pet-imaging-in-a-preclinical-prostate-cancer-model
#7
Mohammed N Tantawy, H Charles Manning, Todd E Peterson, Daniel C Colvin, John C Gore, Wenfu Lu, Zhenbang Chen, C Chad Quarles
PURPOSE: The identification and targeting of biomarkers specific to prostate cancer (PCa) could improve its detection. Given the high expression of translocator protein (TSPO) in PCa, we investigated the use of [(18)F]VUIIS1008 (a novel TSPO-targeting radioligand) coupled with positron emission tomography (PET) to identify PCa in mice and to characterize their TSPO uptake. PROCEDURES: Pten(pc-/-), Trp53(pc-/-) prostate cancer-bearing mice (n = 9, 4-6 months old) were imaged in a 7T MRI scanner for lesion localization...
August 18, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28822028/effect-of-diquafosol-tetrasodium-3-on-the-conjunctival-surface-and-clinical-findings-after-cataract-surgery-in-patients-with-dry-eye
#8
Lian Cui, Ying Li, Hyo Seok Lee, Jee Myung Yang, Won Choi, Kyung Chul Yoon
PURPOSE: To investigate the effects of diquafosol tetrasodium (DT) 3% on conjunctival impression cytologic findings in addition to clinical symptoms and signs after cataract surgery in patients with preexisting dry eye disease (DED). METHODS: Ninety-four eyes of 94 patients with DED who underwent uneventful cataract surgery were included. In total, 50 patients were treated with DT 3% (group A), while 44 patients were treated with sodium hyaluronate 0.1% (group B) postoperatively, along with topical antibiotics and steroids...
August 18, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28822026/corneal-thickness-residual-stromal-thickness-and-its-effect-on-opaque-bubble-layer-in-small-incision-lenticule-extraction
#9
Jiaonan Ma, Yan Wang, Liuyang Li, Jiamei Zhang
PURPOSE: To evaluate the effects of the central corneal thickness (CCT) and residual stromal thickness (RST) on the formation of opaque bubble layer (OBL) during small-incision lenticule extraction (SMILE). METHODS: A total of 345 eyes from Refractive Surgery Center database at Tianjin Eye Hospital that had been subjected to SMILE surgery and followed for 6 months were included in this study and divided into OBL and OBL-free groups. Preoperative, intraoperative, and postoperative data for all eyes were evaluated and analyzed using multivariate regression analysis...
August 18, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28821929/magnetic-resonance-cinematography-of-the-fingers-a-3-0-tesla-feasibility-study-with-comparison-of-incremental-and-continuous-dynamic-protocols
#10
Thomas Bayer, Werner Adler, Rolf Janka, Michael Uder, Frank Roemer
OBJECTIVE: To study the feasibility of magnetic resonance cinematography of the fingers (MRCF) with comparison of image quality of different protocols for depicting the finger anatomy during motion. MATERIALS AND METHODS: MRCF was performed during a full flexion and extension movement in 14 healthy volunteers using a finger-gating device. Three real-time sequences (frame rates 17-59 images/min) and one proton density (PD) sequence (3 images/min) were acquired during incremental and continuous motion...
August 19, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28821927/control-of-wrist-movement-in-deafferented-man-evidence-for-a-mixed-strategy-of-position-and-amplitude-control
#11
R Chris Miall, P Haggard, J D Cole
There is a continuing debate about control of voluntary movement, with conflicted evidence about the balance between control of movement vectors (amplitude control) that implies knowledge of the starting position for accuracy, and equilibrium point or final position control, that is independent of the starting conditions. We tested wrist flexion and extension movements in a man with a chronic peripheral neuronopathy that deprived him of proprioceptive knowledge of his wrist angles. In a series of experiments, we demonstrate that he could scale the amplitude of his wrist movements in flexion/extension, even without visual feedback, and appeared to adopt a strategy of moving via a central wrist position when asked to reach target angles from unknown start locations...
August 18, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28821922/homeostatic-plasticity-in-human-extrastriate-cortex-following-a-simulated-peripheral-scotoma
#12
Matthew A Gannon, Stephanie M Long, Nathan A Parks
Neuroimaging and patient work over the past decade have indicated that, following retinal deafferentation, the human visual cortex undergoes a large-scale and enduring reorganization of its topography such that the classical retinotopic organization of deafferented visual cortex remaps to represent non-classical regions of visual space. Such long-term visual reorganization is proposed to occur through changes in the functional balance of deafferented visual circuits that engage more lasting changes through activity-dependent neuroplasticity...
August 18, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28821906/comparing-pain-reduction-following-kyphoplasty-and-vertebroplasty-a-meta-analysis-of-randomized-and-non-randomized-controlled-trials
#13
Chen Chen, Xiaofeng Shen, Jiangping Wang, Zhigang Zhang, Yuwei Li, Hua Chen
PURPOSE: The aim of the study was to compare the extent of pain reduction with kyphoplasty (KP) and vertebroplasty (VP) in the treatment of osteoporotic vertebral compression fractures (OVCF) using a visual analog scale (VAS). METHODS: A computerized database search was performed to compare pain relief from VP and KP in OVCF. The available literature was analysed to quantify the amount of pain reduction using VAS as the primary outcome. RESULTS: A total of 10 studies encompassing 902 patients met the inclusion criteria...
August 18, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28821865/identification-of-bacterial-biofilm-and-the-staphylococcus-aureus-derived-protease-staphopain-on-the-skin-surface-of-patients-with-atopic-dermatitis
#14
Andreas Sonesson, Kornelia Przybyszewska, Sigrid Eriksson, Matthias Mörgelin, Sven Kjellström, Julia Davies, Jan Potempa, Artur Schmidtchen
Atopic dermatitis (AD) is a chronic inflammatory skin disease characterized by an impaired epidermal barrier, dysregulation of innate and adaptive immunity, and a high susceptibility to bacterial colonization and infection. In the present study, bacterial biofilm was visualized by electron microscopy at the surface of AD skin. Correspondingly, Staphylococcus aureus (S. aureus) isolates from lesional skin of patients with AD, produced a substantial amount of biofilm in vitro. S. aureus biofilms showed less susceptibility to killing by the antimicrobial peptide LL-37 when compared with results obtained using planktonic cells...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821861/the-validity-of-self-report-of-eye-diseases-in-participants-with-vision-loss-in-the-national-eye-health-survey
#15
Joshua Foreman, Jing Xie, Stuart Keel, Peter van Wijngaarden, Hugh R Taylor, Mohamed Dirani
We assessed the validity and reliability of self-report of eye disease in participants with unilateral vision loss (presenting visual acuity worse than 6/12 in the worse eye and equal to or better than 6/12 in the better eye) or bilateral vision loss (presenting visual acuity worse than 6/12 in the better eye) in Australia's National Eye Health Survey. In total, 1738 Indigenous Australians and 3098 non-Indigenous Australians were sampled from 30 sites. Participants underwent a questionnaire and self-reported their eye disease histories...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821846/the-effects-of-long-term-abacus-training-on-topological-properties-of-brain-functional-networks
#16
Jian Weng, Ye Xie, Chunjie Wang, Feiyan Chen
Previous studies in the field of abacus-based mental calculation (AMC) training have shown that this training has the potential to enhance a wide variety of cognitive abilities. It can also generate specific changes in brain structure and function. However, there is lack of studies investigating the impact of AMC training on the characteristics of brain networks. In this study, utilizing graph-based network analysis, we compared topological properties of brain functional networks between an AMC group and a matched control group...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821812/crows-rival-monkeys-in-cognitive-capacity
#17
Dmitry Balakhonov, Jonas Rose
The present study compares the 'bandwidth of cognition' between crows and primates. Working memory is the ability to maintain and manipulate information over short periods of time - a core component of cognition. The capacity of working memory is tightly limited, in humans correlated with individual intelligence and commonly used synonymously with cognitive capacity. Crows have remarkable cognitive skills and while birds and mammals share neural principles of working memory, its capacity has not been tested in crows...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821808/repetition-suppression-to-objects-is-modulated-by-stimulus-specific-expectations
#18
Christian Utzerath, Elexa St John-Saaltink, Jan Buitelaar, Floris P de Lange
Repeated exposure to the same stimulus results in an attenuated brain response in cortical regions that are activated during the processing of that stimulus. This phenomenon, called repetition suppression (RS), has been shown to be modulated by expectation. Typically, this is achieved by varying the probability of stimulus repetitions (Prep) between blocks of an experiment, generating an abstract expectation that 'things will repeat'. Here, we examined whether stimulus-specific expectations also modulate RS...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821801/experimental-study-of-rheological-properties-and-oil-displacement-efficiency-in-oilfields-for-a-synthetic-hydrophobically-modified-polymer
#19
Pengcheng Liu, Zhenbao Mu, Chao Wang, Yanling Wang
In a previous study, we developed a synthetic hydrophobically modified hydroxyethyl cellulose (HEC) using bromododecane (BD), which we denote as BD-HMHEC. In this work, we continually investigate the rheological properties and its oil displacement efficiency in PuTao well area in Daqing oilfields, China. Results show that BD-HMHEC solution has good viscosification, thermal-resistance, salt-tolerance, shear resistance, and acid/alkali resistance. The storage modulus (G') and the loose modulus (G") of the BD-HMHEC solutions increase significantly with increasing BD-HMHEC concentration, and the solution becomes viscoelastic at a sufficiently high BD-HMHEC concentration...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821774/pre-coincidence-brain-activity-predicts-the-perceptual-outcome-of-streaming-bouncing-motion-display
#20
Song Zhao, Yajie Wang, Lina Jia, Chengzhi Feng, Yu Liao, Wenfeng Feng
When two identical visual discs move toward each other on a two-dimensional visual display, they can be perceived as either "streaming through" or "bouncing off" each other after their coincidence. Previous studies have observed a strong bias toward the streaming percept. Additionally, the incidence of the bouncing percept in this ambiguous display could be increased by various factors, such as a brief sound at the moment of coincidence and a momentary pause of the two discs. The streaming/bouncing bistable motion phenomenon has been studied intensively since its discovery...
August 18, 2017: Scientific Reports
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