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https://www.readbyqxmd.com/read/28087539/quantitative-stability-of-hematopoietic-stem-and-progenitor-cell-clonal-output-in-transplanted-rhesus-macaques
#1
Samson J Koelle, Diego A Espinoza, Chuanfeng Wu, Jason Xu, Rong Lu, Brian Li, Robert E Donahue, Cynthia E Dunbar
Autologous transplantation of hematopoietic stem and progenitor cells lentivirally labeled with unique oligonucleotide barcodes flanked by sequencing primer targets enables quantitative assessment of the self-renewal and differentiation patterns of these cells in a myeloablative rhesus macaque model. Compared with other approaches to clonal tracking, this approach is highly quantitative and reproducible. We documented very stable multipotent long-term hematopoietic clonal output of monocytes, granulocytes, B cells and T cells from a polyclonal pool of hematopoietic stem and progenitor cells in four macaques followed for up to 49 months post-transplantation...
January 13, 2017: Blood
https://www.readbyqxmd.com/read/28087244/practice-makes-perfect-correlations-between-prior-experience-in-high-level-athletics-and-robotic-surgical-performance-do-not-persist-after-task-repetition
#2
Kevin Shee, Fady M Ghali, Elias S Hyams
OBJECTIVE: Robotic surgical skill development is central to training in urology as well as in other surgical disciplines. Here, we describe a pilot study assessing the relationships between robotic surgery simulator performance and 3 categories of activities, namely, videogames, musical instruments, and athletics. DESIGN: A questionnaire was administered to preclinical medical students for general demographic information and prior experiences in surgery, videogames, musical instruments, and athletics...
January 10, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28086801/two-dimensional-speckle-tracking-echocardiography-for-evaluation-of-dilative-ascending-aorta-biomechanics
#3
Monika Bieseviciene, Jolanta Justina Vaskelyte, Vaida Mizariene, Rasa Karaliute, Vaiva Lesauskaite, Raimonda Verseckaite
BACKGROUND: Two-dimensional (2D) echocardiography is one of the most feasible, noninvasive methods for assessing the aortic diameter and biomechanical changes. We studied possible interfaces between noninvasive biomechanical and speckle-tracking (ST) echocardiographic data from dilated aortas. METHODS: Altogether, 44 patients with dilative pathology of ascending aorta (DPAA) were compared with subjects without ascending aortic dilation (diameter <40 mm). DPAA patients formed two groups based on diameter size: group 1, ≤45 mm diameter; group 2, >45 mm...
January 13, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28081058/leading-causes-of-death-in-nonmetropolitan-and-metropolitan-areas-united-states-1999-2014
#4
Ernest Moy, Macarena C Garcia, Brigham Bastian, Lauren M Rossen, Deborah D Ingram, Mark Faul, Greta M Massetti, Cheryll C Thomas, Yuling Hong, Paula W Yoon, Michael F Iademarco
PROBLEM/CONDITION: Higher rates of death in nonmetropolitan areas (often referred to as rural areas) compared with metropolitan areas have been described but not systematically assessed. PERIOD COVERED: 1999-2014 DESCRIPTION OF SYSTEM: Mortality data for U.S. residents from the National Vital Statistics System were used to calculate age-adjusted death rates and potentially excess deaths for nonmetropolitan and metropolitan areas for the five leading causes of death...
January 13, 2017: MMWR. Surveillance Summaries: Morbidity and Mortality Weekly Report. Surveillance Summaries
https://www.readbyqxmd.com/read/28080169/family-oriented-support-famos-development-and-feasibility-of-a-psychosocial-intervention-for-families-of-childhood-cancer-survivors
#5
Hanin Salem, Christoffer Johansen, Kjeld Schmiegelow, Jeanette Falck Winther, Peder Skov Wehner, Henrik Hasle, Steen Rosthøj, Anne E Kazak, Pernille E Bidstrup
BACKGROUND: We developed and tested the feasibility of a manualized psychosocial intervention, FAMily-Oriented Support (FAMOS), a home-based psychosocial intervention for families of childhood cancer survivors. The aim of the intervention is to support families in adopting healthy strategies to cope with the psychological consequences of childhood cancer. The intervention is now being evaluated in a nationwide randomized controlled trial (RCT). METHODS AND DESIGN: FAMOS is based on principles of family systems therapy and cognitive behavioral therapy, and is delivered in six sessions at home...
January 12, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28080087/perceptual-salience-does-not-influence-emotional-arousal-s-impairing-effects-on-top-down-attention
#6
Matthew R Sutherland, Douglas A McQuiggan, Jennifer D Ryan, Mara Mather
Emotional arousal impairs top-down attentional control while strengthening bottom-up attentional biases. In this study, we examined whether top-down impairments due to arousal can be modulated by increasing the perceptual salience of the target stimulus. To examine this question, we briefly displayed positive and negative arousing images prior to the encoding of 2 emotionally neutral items, 1 of which was to be remembered and 1 of which was perceptually salient (the to-be-remembered and the salient items were either the same item or different items)...
January 12, 2017: Emotion
https://www.readbyqxmd.com/read/28079282/troubling-issues-at-the-frontier-of-animal-tracking-for-conservation-and-management
#7
Steven J Cooke, Vivian M Nguyen, Steven T Kessel, Nigel E Hussey, Nathan Young, Adam T Ford
Developments in electronic tagging and tracking, including biotelemetry and biologging, have provided unprecedented insight into the ecology of wild animals (Cooke et al. 2004) and revealed hidden movement patterns, habitat associations, animal-environment interactions, and mortality rates for even the most cryptic of species (Hussey et al. 2015; Kays et al. 2015). Natural history, ecology (including movement ecology), conservation, and resource management have all benefitted from the application of this technology...
January 12, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/28079062/does-retinal-configuration-make-the-head-and-eyes-of-foveate-birds-move
#8
Bret A Moore, Luke P Tyrrell, Diana Pita, Olaf R P Bininda-Emonds, Esteban Fernández-Juricic
Animals move their heads and eyes to compensate for movements of the body and background, search, fixate, and track objects visually. Avian saccadic head/eye movements have been shown to vary considerably between species. We tested the hypothesis that the configuration of the retina (i.e., changes in retinal ganglion cell density from the retinal periphery to the center of acute vision-fovea) would account for the inter-specific variation in avian head/eye movement behavior. We characterized retinal configuration, head movement rate, and degree of eye movement of 29 bird species with a single fovea, controlling for the effects of phylogenetic relatedness...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28077187/lysosome-like-compartments-of-trypanosoma-cruzi-trypomastigotes-may-originate-directly-from-epimastigote-reservosomes
#9
Juliana C Vidal, Carolina DE L Alcantara, Wanderley DE Souza, Narcisa L Cunha-E-Silva
Trypanosoma cruzi epimastigote reservosomes store nutrients taken up during the intense endocytic activity exhibited by this developmental form. Reservosomes were classified as pre-lysosomal compartments. In contrast, trypomastigote forms are not able to take up nutrients from the medium. Interestingly, trypomastigotes also have acidic organelles with the same proteases contained in epimastigote reservosomes. Nevertheless, the origin and function of these organelles have not been disclosed so far. Given the similarities between the compartments of epimastigotes and trypomastigotes, the present study aimed to investigate the origin of metacyclic trypomastigote protease-containing organelles by tracking fluorospheres or colloidal gold particles previously stored in epimastigotes' reservosomes throughout metacyclogenesis...
January 12, 2017: Parasitology
https://www.readbyqxmd.com/read/28076441/effects-of-an-integrated-fast-track-rehabilitation-service-for-multi-trauma-patients-a-non-randomized-clinical-trial-in-the-netherlands
#10
Ans I E Bouman, Bea Hemmen, Silvia M A A Evers, Henk van de Meent, Ton Ambergen, Pieter E Vos, Peter R G Brink, Henk A M Seelen
OBJECTIVES: The effects on health related outcomes of a newly-developed rehabilitation program, called 'supported Fast Track multi-trauma rehabilitation service' (Fast Track), were evaluated in comparison with conventional trauma rehabilitation service (Care as Usual). METHODS: Prospective, multi-center, non-randomized controlled study. Between 2009 and 2012, 132 adult multi-trauma patients were included: 65 Fast Track and 67 Care as Usual patients with an Injury Severity Score ≥16, complex multiple injuries in several extremities or complex pelvic and/or acetabulum fractures...
2017: PloS One
https://www.readbyqxmd.com/read/28075373/visual-object-tracking-based-on-cross-modality-gaussian-bernoulli-deep-boltzmann-machines-with-rgb-d-sensors
#11
Mingxin Jiang, Zhigeng Pan, Zhenzhou Tang
Visual object tracking technology is one of the key issues in computer vision. In this paper, we propose a visual object tracking algorithm based on cross-modality featuredeep learning using Gaussian-Bernoulli deep Boltzmann machines (DBM) with RGB-D sensors. First, a cross-modality featurelearning network based on aGaussian-Bernoulli DBM is constructed, which can extract cross-modality features of the samples in RGB-D video data. Second, the cross-modality features of the samples are input into the logistic regression classifier, andthe observation likelihood model is established according to the confidence score of the classifier...
January 10, 2017: Sensors
https://www.readbyqxmd.com/read/28075330/building-an-open-source-simulation-platform-of-acoustic-radiation-force-based-breast-elastography
#12
Yu Wang, Bo Peng, Jingfeng Jiang
Ultrasound-based elastography techniques including quasi-static strain elastography (SE), acoustic radiation force Impulse (ARFI) imaging, point shear wave elastography (pSWE) and supersonic shear imaging (SSI) have been used to differentiate breast tumors. The objective of this study is to extend a previously published virtual simulation platform of SE toward acoustic radiation force-based breast elastography. The proposed platform inherited four key components from the previously published virtual SE platform: an ultrasound simulator (Field II), a mesh generator (Tetgen), a finite element (FE) solver (FEBio) and a visualization and data processing package (VTK)...
January 11, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28075039/using-dna-barcoding-to-track-seafood-mislabeling-in-los-angeles-restaurants
#13
Demian A Willette, Sara E Simmonds, Samantha H Cheng, Sofia Esteves, Tonya L Kane, Hayley Nuetzel, Nicholas Pilaud, Rita Rachmawati, Paul H Barber
Seafood mislabeling is common in both domestic and international markets. Previous studies on seafood fraud often report high rates of mislabeling (e.g. >70%), but these studies have been limited to a single sampling year, making it difficult to assess the impact of stricter governmental truth-in-labeling regulations. This study uses DNA barcoding to assess seafood mislabeling in Los Angeles over a four-year period. Sushi restaurants had a consistently high percentage of mislabeling (47%) from 2012 to 2015, yet mislabeling was not homogenous across species...
January 11, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/28074925/atomization-of-high-viscosity-fluids-for-aromatherapy-using-micro-heaters-for-heterogeneous-bubble-nucleation
#14
Junhui Law, Ka Wai Kong, Ho-Yin Chan, Winston Sun, Wen Jung Li, Eric Boa Fung Chau, George Kak Man Chan
The development of a novel lead-free microelectromechanical-system (MEMS)-based atomizer using the principle of thermal bubble actuation is presented. It is a low-cost, lead-free design that is environmentally friendly and harmless to humans. It has been tested to be applicable over a wide range of fluid viscosities, ranging from 1 cP (e.g., water) to 200 cP (e.g., oil-like fluid) at room temperature, a range that is difficult to achieve using ordinary atomizers. The results demonstrate that the average power consumption of the atomizer is approximately 1 W with an atomization rate of 0...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28074824/studying-diastology-with-speckle-tracking-echocardiography-the-essentials
#15
REVIEW
Arindam Choudhury, Rohan Magoon, Vishwas Malik, Poonam Malhotra Kapoor, S Ramakrishnan
Diastolic dysfunction is common in cardiac disease and an important finding independent of systolic function as it contributes to the signs and symptoms of heart failure. Tissue Doppler mitral early diastolic velocity (Ea) combined with peak transmitral early diastolic velocity (E) to obtain E/Ea ratio provides an estimate of the left ventricular (LV) filling pressure. However, E/Ea has a significant gray zone and less reliable in patients with preserved ejection fraction (>50%). Two-dimensional echocardiographic speckle tracking measure myocardial strain and strain rate (Sr) avoiding the Doppler-associated angulation errors and tethering artifacts...
January 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28073671/fast-track-recovery-technique-applied-to-primary-total-hip-and-knee-replacement-surgery-analysis-of-costs-and-complications
#16
C Wilches, J D Sulbarán, J E Fernández, J M Gisbert, J M Bausili, X Pelfort
PURPOSE: To determine the cost reduction and complication rates of using an enhanced recovery pathway (Fast-track) when compared to traditional recovery in primary total hip replacement (THR) and total knee replacement (TKR), as well as to determine if there were significant differences in complication rates. MATERIAL AND METHODS: Retrospective review of 100 primary total arthroplasties using the Fast-track recovery system and another 100 using conventional recovery...
January 7, 2017: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/28072383/reconstructing-contralateral-fiber-tracts-methodological-aspects-of-cerebello-thalamocortical-pathway-reconstruction
#17
Fulvia Palesi, Jacques-Donald Tournier, F Calamante, Nils Muhlert, Gloria Castellazzi, Declan Chard, E D'Angelo, Claudia Gandini Wheeler-Kingshott
The identification of pathways connecting the cerebral cortex with subcortical structures is critical to understanding how large-scale brain networks operate. The cerebellum, for example, is known to project numerous axonal bundles to thecerebral cortex passing through the thalamus. This paper focuses on the technical details of cerebello-thalamo-cortical pathway reconstruction using advanced diffusion MRI techniques in humans in vivo. Pathways reconstructed using seed/target placement on super-resolution maps, created with track density imaging (TDI), were compared with those reconstructed by defining regions of interest (ROIs) on non-diffusion weighted images (b0)...
October 2016: Functional Neurology
https://www.readbyqxmd.com/read/28071674/predictors-of-exercise-induced-pulmonary-hypertension-in-patients-with-asymptomatic-degenerative-mitral-regurgitation-mechanistic-insights-from-2d-speckle-tracking-echocardiography
#18
Ryo Kamijima, Kengo Suzuki, Masaki Izumo, Shingo Kuwata, Kei Mizukoshi, Manabu Takai, Seisyou Kou, Akio Hayashi, Keisuke Kida, Tomoo Harada, Yoshihiro J Akashi
Presence of exercise-induced pulmonary hypertension (EIPH) in asymptomatic degenerative mitral regurgitation (DMR) determines prognosis. This study aimed to elucidate the mechanism and predictors of EIPH in asymptomatic DMR. Ninety-one consecutive asymptomatic patients with DMR who underwent exercise stress echocardiography were prospectively included. We obtained various conventional echocardiographic parameters at rest and during peak exercise, as well as left atrial (LA) function at rest using 2-dimensional speckle-tracking analysis...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28071667/photogate-microscopy-to-track-single-molecules-in-crowded-environments
#19
Vladislav Belyy, Sheng-Min Shih, Jigar Bandaria, Yongjian Huang, Rosalie E Lawrence, Roberto Zoncu, Ahmet Yildiz
Tracking single molecules inside cells reveals the dynamics of biological processes, including receptor trafficking, signalling and cargo transport. However, individual molecules often cannot be resolved inside cells due to their high density. Here we develop the PhotoGate technique that controls the number of fluorescent particles in a region of interest by repeatedly photobleaching its boundary. PhotoGate bypasses the requirement of photoactivation to track single particles at surface densities two orders of magnitude greater than the single-molecule detection limit...
January 10, 2017: Nature Communications
https://www.readbyqxmd.com/read/28070903/myocardial-deformation-in-pediatric-patients-with-mucopolysaccharidoses-a-two-dimensional-speckle-tracking-echocardiography-study
#20
Francesco Borgia, Enrica Pezzullo, Vincenzo Schiano Lomoriello, Regina Sorrentino, Francesco Lo Iudice, Sara Cocozza, Roberto Della Casa, Giancarlo Parenti, Pietro Strisciuglio, Bruno Trimarco, Maurizio Galderisi
BACKGROUND: Mucopolysaccharidoses (MPS) are inherited lysosomal storage disorders caused by deficiency of required glycosaminoglycans breakdown enzymes, inducing cardiac involvement. Little is known about myocardial deformation involvement in MPS. Our aim was to assess biventricular structure and function in asymptomatic children with MPS using standard echo Doppler and 2D speckle tracking (STE). METHODS: Fifteen MPS children (one type I, six type II, three type III A, one III B, three IV A, one VI), asymptomatic for cardiac symptoms, and 15 age and sex-matched healthy controls underwent echo Doppler and STE...
January 10, 2017: Echocardiography
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