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https://www.readbyqxmd.com/read/28325033/user-intent-prediction-with-a-scaled-conjugate-gradient-trained-artificial-neural-network-for-lower-limb-amputees-using-a-powered-prosthesis
#1
Richard B Woodward, John A Spanias, Levi J Hargrove
Powered lower limb prostheses have the ability to provide greater mobility for amputee patients. Such prostheses often have pre-programmed modes which can allow activities such as climbing stairs and descending ramps, something which many amputees struggle with when using non-powered limbs. Previous literature has shown how pattern classification can allow seamless transitions between modes with a high accuracy and without any user interaction. Although accurate, training and testing each subject with their own dependent data is time consuming...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324973/force-controlled-ultrasound-to-measure-passive-mechanical-properties-of-muscle-in-duchenne-muscular-dystrophy
#2
Anne J Pigula, Jim S Wu, Matthew W Gilbertson, Basil T Darras, Seward B Rutkove, Brian W Anthony
The purpose of this study is to assess differences in skeletal muscle compressibility between patients with Duchenne muscular dystrophy (DMD) and normal subjects. The transverse passive mechanical properties of muscle, particularly those related to stiffness and elasticity, can be measured using force-controlled ultrasound. We acquired ultrasound videos of muscle compression under known pressures in the biceps and quadriceps in 23 boys with DMD and 20 age-matched healthy controls. We calculated the bulk linear spring constant, nonlinear stress-strain response, and average Young's modulus for each...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324966/random-forests-to-predict-tumor-recurrence-following-cervical-cancer-therapy-using-pre-and-per-treatment-18-f-fdg-pet-parameters
#3
Geoffrey Roman-Jimenez, Oscar Acosta, Julie Leseur, Anne Devillers, Henri Der Sarkissian, Lina Guzman, Eloi'se Grossiord, Juan-David Ospina, Renaud De Crevoisier
The ability to predict tumor recurrence after chemoradiotherapy of locally advanced cervical cancer is a crucial clinical issue to intensify the treatment of the most high-risk patients. The objective of this study was to investigate tumor metabolism characteristics extracted from pre- and per-treatment (18)F-FDG PET images to predict 3-year overall recurrence (OR). A total of 53 locally advanced cervical cancer patients underwent pre- and per-treatment (18)F-FDG PET (respectively PET1 and PET2). Tumor metabolism was characterized through several delineations using different thresholds, based on a percentage of the maximum uptake, and applied by region-growing...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324712/comparison-of-gaseous-polycyclic-aromatic-hydrocarbon-metabolites-according-to-their-specificity-as-biomarkers-of-occupational-exposure-selection-of-2-hydroxyfluorene-and-2-hydroxyphenanthrene
#4
Damien Barbeau, Simon Lutier, Marie Marques, Renaud Persoons, Anne Maitre
Exposure to Polycyclic Aromatic Hydrocarbons (PAHs) occurs by respiratory, digestive and dermal absorption. Biomonitoring takes all pathways into account but sensitive and specific biomarkers are required. Different gaseous PAHs metabolites were used due to their abundance in the atmospheric mixtures but none of them were selected as better biomarker than the others. To identify the best candidates for assessing occupational airborne exposure, relation between atmospheric levels of Naphtalene, Fluorene and Phenanthrene and urinary metabolites concentrations was studied in a carbon electrode workers group...
March 6, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28324707/chemical-structure-based-predictive-model-for-the-oxidation-of-trace-organic-contaminants-by-sulfate-radical
#5
Tiantian Ye, Zongsu Wei, Richard Spinney, Chong-Jian Tang, Shuang Luo, Ruiyang Xiao, Dionysios D Dionysiou
Second-order rate constants [Formula: see text] for the reaction of sulfate radical anion (SO4(•-)) with trace organic contaminants (TrOCs) are of scientific and practical importance for assessing their environmental fate and removal efficiency in water treatment systems. Here, we developed a chemical structure-based model for predicting [Formula: see text] using 32 molecular fragment descriptors, as this type of model provides a quick estimate at low computational cost. The model was constructed using the multiple linear regression (MLR) and artificial neural network (ANN) methods...
March 6, 2017: Water Research
https://www.readbyqxmd.com/read/28324675/arterial-stiffness-in-hiv-infected-youth-and-associations-with-hiv-related-variables
#6
Allison Ross Eckard, Paolo Raggi, Joshua H Ruff, Mary Ann O'Riordan, Julia C Rosebush, Danielle Labbato, Julie E Daniels, Monika Uribe-Leitz, Christopher T Longencker, Grace A McComsey
Children and young adults infected with HIV are at elevated risk for cardiovascular disease (CVD). However, scarce data exist on the utility of non-invasive methods to diagnose subclinical CVD, such as pulse wave velocity (PWV), a non-invasive measure of arterial stiffness. The objectives of this study were to assess the relationship of carotid-femoral PWV with subclinical atherosclerosis measured by carotid intima-media thickness (IMT), compare measurements to healthy controls, and evaluate variables associated with PWV in HIV-infected youth...
March 21, 2017: Virulence
https://www.readbyqxmd.com/read/28324643/unsymmetrical-iron-p-nh-p-catalysts-for-the-asymmetric-pressure-hydrogenation-of-aryl-ketones
#7
Robert Harold Morris, Samantha Alizabeth Michelle Smith, Paraskevi Olympia Lagaditis, Alan J Lough, Anne Lüpke
The reductive amination of -dialkylphosphine acetaldehydes with enantiopure -aminophosphines is a new, versatile route to unsymmetrical tridentate (pincer) ligands P-NH-P'. Four new ligands PR2CH2CH2NHCHR'CHR''PPh2 (R = iPr, Cy, R' = Ph, CH(CH3)2, R'' = Ph, H) prepared in this way are used to make the iron(II) complexes mer-FeCl2(CO)(P-NH-P') and mer-FeCl(H)(CO)(P-NH-P'). The hydride complex with the rigid ligand with R'= R''= Ph is an efficient and highly enantioselective homogeneous asymmetric pressure hydrogenation (APH) catalyst...
March 21, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28324322/measurement-invariance-of-the-satisfaction-with-life-scale-reviewing-three-decades-of-research
#8
REVIEW
Scott D Emerson, Martin Guhn, Anne M Gadermann
PURPOSE: The Satisfaction with Life Scale (SWLS) is a widely used measure of life satisfaction, a key aspect in quality of life. The SWLS has been used across many socio-demographic groups. Comparison of life satisfaction across different subgroups (e.g., cultures) is meaningful to researchers; such cross-group comparison presupposes that validity of the inferences from SWLS scores holds across various subgroups (measurement invariance: MI). The aim of the present review was to identify, summarize, and evaluate research testing measurement invariance of the SWLS...
March 21, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/28324286/prolymphocytic-leukemia-new-insights-in-diagnosis-and-in-treatment
#9
REVIEW
Aude Collignon, Anne Wanquet, Elsa Maitre, Edouard Cornet, Xavier Troussard, Thérèse Aurran-Schleinitz
PURPOSE OF REVIEW: We aimed to produce a comprehensive update on clinical and biological data regarding two rare lymphoid neoplasms, B and T prolymphocytic leukemias, and assess therapeutic management in the light of new molecular insights and the advent of targeted therapies. RECENT FINDINGS: B cell prolymphocytic leukemia (B-PLL) diagnosis remains challenging in the absence of clear immunophenotypic or cytogenetic signature and overlap with mantle cell lymphoma...
April 2017: Current Oncology Reports
https://www.readbyqxmd.com/read/28324263/decannulation-and-functional-outcome-after-tracheostomy-in-patients-with-severe-stroke-decast-a-prospective-observational-study
#10
Hauke Schneider, Franziska Hertel, Matthias Kuhn, Maximilian Ragaller, Birgit Gottschlich, Anne Trabitzsch, Markus Dengl, Marcus Neudert, Heinz Reichmann, Sigrid Wöpking
BACKGROUND: Tracheostomy is performed in ventilated stroke patients affected by persisting severe dysphagia, reduced level of consciousness, or prolonged mechanical ventilation. The study aim was to determine the frequency and predictors of successful decannulation and long-term functional outcome in tracheotomized stroke patients. METHODS: A prospective single-center observational study recruited ventilated patients with ischemic stroke, intracerebral hemorrhage, and subarachnoid hemorrhage...
March 21, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28324169/roles-of-centromedian-parafascicular-nuclei-of-thalamus-and-cholinergic-interneurons-in-the-dorsal-striatum-in-associative-learning-of-environmental-events
#11
REVIEW
Ko Yamanaka, Yukiko Hori, Takafumi Minamimoto, Hiroshi Yamada, Naoyuki Matsumoto, Kazuki Enomoto, Toshihiko Aosaki, Ann M Graybiel, Minoru Kimura
The thalamus provides a massive input to the striatum, but despite accumulating evidence, the functions of this system remain unclear. It is known, however, that the centromedian (CM) and parafascicular (Pf) nuclei of the thalamus can strongly influence particular striatal neuron subtypes, notably including the cholinergic interneurons of the striatum (CINs), key regulators of striatal function. Here, we highlight the thalamostriatal system through the CM-Pf to striatal CINs. We consider how, by virtue of the direct synaptic connections of the CM and PF, their neural activity contributes to the activity of CINs and striatal projection neurons (SPNs)...
March 21, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/28324093/association-between-radiation-therapy-surgery-or-observation-for-localized-prostate-cancer-and-patient-reported-outcomes-after-3-years
#12
Daniel A Barocas, JoAnn Alvarez, Matthew J Resnick, Tatsuki Koyama, Karen E Hoffman, Mark D Tyson, Ralph Conwill, Dan McCollum, Matthew R Cooperberg, Michael Goodman, Sheldon Greenfield, Ann S Hamilton, Mia Hashibe, Sherrie H Kaplan, Lisa E Paddock, Antoinette M Stroup, Xiao-Cheng Wu, David F Penson
Importance: Understanding the adverse effects of contemporary approaches to localized prostate cancer treatment could inform shared decision making. Objective: To compare functional outcomes and adverse effects associated with radical prostatectomy, external beam radiation therapy (EBRT), and active surveillance. Design, Setting, and Participants: Prospective, population-based, cohort study involving 2550 men (≤80 years) diagnosed in 2011-2012 with clinical stage cT1-2, localized prostate cancer, with prostate-specific antigen levels less than 50 ng/mL, and enrolled within 6 months of diagnosis...
March 21, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28324092/association-between-choice-of-radical-prostatectomy-external-beam-radiotherapy-brachytherapy-or-active-surveillance-and-patient-reported-quality-of-life-among-men-with-localized-prostate-cancer
#13
Ronald C Chen, Ramsankar Basak, Anne-Marie Meyer, Tzy-Mey Kuo, William R Carpenter, Robert P Agans, James R Broughman, Bryce B Reeve, Matthew E Nielsen, Deborah S Usinger, Kiayni C Spearman, Sarah Walden, Dianne Kaleel, Mary Anderson, Til Stürmer, Paul A Godley
Importance: Patients diagnosed with localized prostate cancer have to decide among treatment strategies that may differ in their likelihood of adverse effects. Objective: To compare quality of life (QOL) after radical prostatectomy, external beam radiotherapy, and brachytherapy vs active surveillance. Design, Setting, and Participants: Population-based prospective cohort of 1141 men (57% participation among eligible men) with newly diagnosed prostate cancer were enrolled from January 2011 through June 2013 in collaboration with the North Carolina Central Cancer Registry...
March 21, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28324065/neurod-factors-discriminate-mineralocorticoid-from-glucocorticoid-receptor-dna-binding-in-the-male-rat-brain
#14
Lisa T C M van Weert, Jacobus C Buurstede, Ahmed Mahfouz, Pamela S M Braakhuis, J Annelies E Polman, Hetty C M Sips, Benno Roozendaal, Judit Balog, E Ronald de Kloet, Nicole A Datson, Onno C Meijer
In the limbic brain, mineralocorticoid receptors (MRs) and glucocorticoid receptors (GRs) both function as receptors for the naturally occurring glucocorticoids (corticosterone/cortisol), but mediate distinct effects on cellular physiology via transcriptional mechanisms. The transcriptional basis for specificity of these MR- versus GR-mediated effects is unknown. To address this conundrum we have identified the extent of MR/GR DNA binding selectivity in the rat hippocampus using chromatin immunoprecipitation followed by sequencing (ChIP-seq)...
January 24, 2017: Endocrinology
https://www.readbyqxmd.com/read/28324050/transgender-health-in-endocrinology-current-status-of-endocrinology-fellowship-programs-and-practicing-clinicians
#15
Caroline Davidge-Pitts, Todd B Nippoldt, Ann Danoff, Lauren Radziejewski, Neena Natt
Context: The transgender population continues to face challenges in accessing appropriate health care. Adequate training of endocrinologists in this area is a priority. Objectives: 1) Assess the status of transgender healthcare education in United States (US) endocrinology fellowship training programs, and 2) assess knowledge and practice of transgender health amongst practicing US endocrinologists. Design: Mayo Clinic and Endocrine Society developed and administered a web-based anonymous survey to 104 endocrinology fellowship program directors (PDs) and 6,992 US MD members of Endocrine Society...
January 10, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323992/quantification-of-thyroid-cancer-and-multinodular-goiter-risk-in-the-dicer1-syndrome-a-family-based-cohort-study
#16
Nicholas E Khan, Andrew J Bauer, Kris Ann P Schultz, Leslie Doros, Rosamma M Decastro, Alexander Ling, Maya B Lodish, Laura A Harney, Ron G Kase, Ann G Carr, Christopher T Rossi, Amanda Field, Anne K Harris, Gretchen M Williams, Louis P Dehner, Yoav H Messinger, D Ashley Hill, Douglas R Stewart
Context: The risk of thyroid cancer and multinodular goiter (MNG) in the DICER1 syndrome, a rare tumor-predisposition disorder, is unknown. Objective: To quantify the risk of thyroid cancer and MNG in individuals with the DICER1 syndrome. Design: Family-based cohort study. Setting: National Institutes of Health (NIH) Clinical Center (CC). Participants: The National Cancer Institute DICER1 syndrome cohort consisted of 145 individuals with a DICER1 germline mutation and 135 family controls from 48 families...
February 2, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323980/hypoxia-inducible-lipid-droplet-associated-hilpda-is-not-a-direct-physiological-regulator-of-lipolysis-in-adipose-tissue
#17
Wieneke Dijk, Frits Mattijssen, Montserrat de la Rosa Rodriguez, Angel Loza Valdes, Anne Loft, Susanne Mandrup, Eric Kalkhoven, Ling Qi, Jan Willem Borst, Sander Kersten
Triglycerides are stored in specialized organelles called lipid droplets. Numerous proteins have been shown to be physically associated with lipid droplets and govern their function. Previously, hypoxia-inducible lipid droplet-associated (HILPDA) was localized to lipid droplets and was suggested to inhibit triglyceride lipolysis in hepatocytes. We confirm the partial localization of HILPDA to lipid droplets and show that HILPDA is highly abundant in adipose tissue, where its expression is controlled by the peroxisome proliferator-activated receptor γ and by β-adrenergic stimulation...
March 17, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323960/fgf23-is-not-associated-with-age-related-changes-in-phosphate-but-enhances-renal-calcium-reabsorption-in-girls
#18
Deborah M Mitchell, Harald Jüppner, Sherri-Ann M Burnett-Bowie
Context: Fibroblast growth factor 23 (FGF23) is a critical determinant of phosphate homeostasis. The role of FGF23, however, in regulating physiologic changes in serum phosphate and renal phosphate handling across childhood is not well-described. In addition, animal models have suggested a role for FGF23 in regulating renal calcium excretion. Objective: To assess changes in FGF23 concentrations across childhood in relation to changes in mineral ions and hormones of mineral ion homeostasis...
January 31, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323957/risk-profile-of-the-ret-a883f-germline-mutation-an-international-collaborative-study
#19
Jes Sloth Mathiesen, Mouhammed Amir Habra, John Howard Duncan Bassett, Sirazum Mubin Choudhury, Sabapathy Prakash Balasubramanian, Trevor A Howlett, Bruce G Robinson, Anne-Paule Gimenez-Roqueplo, Frederic Castinetti, Peter Vestergaard, Karin Frank-Raue
Context: The A883F germline mutation of the REarranged during Transfection proto-oncogene causes multiple endocrine neoplasia 2B. In the revised American Thyroid Association (ATA) guidelines for the management of medullary thyroid carcinoma (MTC) the A883F mutation has been reclassified from the highest to high risk level, although no well-defined risk profile for this mutation exists. Objective: To create a risk profile for the A883F mutation for appropriate classification in the ATA risk levels...
March 17, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323951/assessing-energy-requirements-in-women-with-polycystic-ovary-syndrome-a-comparison-against-doubly-labeled-water
#20
Nicholas T Broskey, Monica C Klempel, L Anne Gilmore, Elizabeth F Sutton, Abby D Altazan, Jeffrey H Burton, Eric Ravussin, Leanne M Redman
Context: Weight loss is prescribed to offset the deleterious consequences of polycystic ovary syndrome (PCOS), but a successful intervention requires an accurate assessment of energy requirements. Objective: Describe energy requirements in women with PCOS and evaluate common prediction equations compared to doubly-labeled water (DLW). Design: Cross-sectional study. Setting: Academic research center. Participants: Twenty-eight weight-stable women with PCOS completed a 14-day DLW study along with measures of body composition, resting metabolic rate, and physical activity assessment by accelerometry...
March 8, 2017: Journal of Clinical Endocrinology and Metabolism
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