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https://www.readbyqxmd.com/read/28231500/silver-nanoparticle-embedded-graphene-oxide-methotrexate-for-targeted-cancer-treatment
#1
Raj Kumar Thapa, Jae Hee Kim, Jee-Heon Jeong, Beom Soo Shin, Han-Gon Choi, Chul Soon Yong, Jong Oh Kim
Combination therapies are widely investigated cancer treatment modalities. Carbon based systems such as graphene oxide (GO), plasmonic nanoparticles such as silver nanoparticles (AgNPs), and the folate analog, methotrexate (MTX), have been separately studied for their potential anticancer effects. In this study, we combined these systems to develop AgNPs-embedded GO with conjugated MTX (MTX-GO/AgNPs) and studied their folate receptor-targeted anticancer effects. Results revealed successful formation of AgNPs on GO along with MTX conjugation as suggested by UV/visible, TEM, AFM, FTIR, and XRD analysis...
February 13, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28227869/simea-a-framework-for-simulating-neurons-on-multi-electrode-array
#2
Vafa Andalibi, Timo Aaltonen, Francois Christophe, Tommi Mikkonen, Vafa Andalibi, Timo Aaltonen, Francois Christophe, Tommi Mikkonen, Timo Aaltonen, Vafa Andalibi, Tommi Mikkonen, Francois Christophe
A Multi-Electrode Array (MEA) is a practical device for recording the extracellular activity of in-vitro biological culture. Such culture - for instance neurons - is prone to mistakes leading to irrelevant recordings or no recording at all. Additionally, with the expenses generated by in-vitro culture, minimizing risks is a must. This paper proposes a framework designed and implemented for simulating the spatial positioning of neuronal cultures on a MEA. The framework serves as a sandbox for researchers to simulate the model of their MEA experiments before its eventual in-vitro implementation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227224/cfd-analysis-of-strut-influence-on-blood-flow-in-stent-implanted-left-main-coronary-artery-bifurcation
#3
Yuya Yamada, Takahiro Tsukahara, Masahiro Motosuke, Yusuke Fujino, Yuya Yamada, Takahiro Tsukahara, Masahiro Motosuke, Yusuke Fujino, Takahiro Tsukahara, Yuya Yamada, Yusuke Fujino, Masahiro Motosuke
We numerically studied blood flows in a simulated branching pipe of coronary artery bifurcation, which is affected by stent implantation. We found that stent struts provide effects as guide vanes and blockages on the flow into circumflex branch. The former effect increases the flow rate and shear stress on the arteriosclerosis-prone site. The blockage effect may overwhelm the guide effect depending on a strut position against the inflow.
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226562/context-aware-fall-detection-using-inertial-sensors-and-time-of-flight-transceivers
#4
Mahesh C Shastry, Meysam Asgari, Eric A Wan, Joseph Leitschuh, Nicholas Preiser, Jon Folsom, John Condon, Michelle Cameron, Peter G Jacobs, Mahesh C Shastry, Meysam Asgari, Eric A Wan, Joseph Leitschuh, Nicholas Preiser, Jon Folsom, John Condon, Michelle Cameron, Peter G Jacobs, Michelle Cameron, Jon Folsom, Meysam Asgari, John Condon, Nicholas Preiser, Joseph Leitschuh, Peter G Jacobs, Mahesh C Shastry, Eric A Wan
Automatic detection of falls is important for enabling people who are older to safely live independently longer within their homes. Current automated fall detection systems are typically designed using inertial sensors positioned on the body that generate an alert if there is an abrupt change in motion. These inertial sensors provide no information about the context of the person being monitored and are prone to false positives that can limit their ongoing usage. We describe a fall-detection system consisting of a wearable inertial measurement unit (IMU) and an RF time-of-flight (ToF) transceiver that ranges with other ToF beacons positioned throughout a home...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225594/mass-spectral-feature-list-optimizer-ms-flo-a-tool-to-minimize-false-positive-peak-reports-in-untargeted-lc-ms-data-processing
#5
Brian C Defelice, Sajjan Singh Mehta, Stephanie Samra, Tomas Cajka, Benjamin Wancewicz, Johannes F Fahrmann, Oliver Fiehn
Untargeted metabolomics by liquid chromatography-mass spectrometry generates data rich chromatograms in form of m/z-retention time features. Managing such datasets is a bottleneck. Many popular data processing tools, including XCMS-online and MZmine2, yield numerous false positive peak detections. Flagging and removing such false peaks manually is a time consuming task and prone to human error. We present a web application, MS Feature List Optimizer (MS-FLO), to improve the quality of feature lists after initial processing to expedite the process of data curation...
February 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28224076/decompression-of-posterior-ankle-impingement-with-concomitant-anterior-ankle-pathology-by-posterior-ankle-arthroscopy-in-the-supine-position
#6
Tun Hing Lui
Posterior ankle endoscopy is a safe and effective approach for treatment of posterior ankle impingement. This is usually performed with the patient in prone position. The purpose of this technical note is to describe an arthroscopic approach of decompression of posterior ankle impingement with the patient in supine position. This is indicated if there is posterior ankle impingement together with other ankle pathology requiring anterior ankle arthroscopy. This approach allows treatment of both anterior ankle and posterior ankle pathology with the patient in the supine position...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28222311/associations-of-body-weight-perception-and-weight-control-behaviors-with-problematic-internet-use-among-korean-adolescents
#7
Subin Park, Yeeun Lee
We examined the association of body mass index (BMI), body weight perception, and weight control behaviors with problematic Internet use in a nationwide sample of Korean adolescents. Cross-sectional data from the 2010 Korean Youth Risk Behavior Web-based Survey collected from 37,041 boys and 33,655 girls in middle- and high- schools (grades 7-12) were analyzed. Participants were classified into groups based on BMI (underweight, normal weight, overweight, and obese), body weight perception (underweight, normal weight, and overweight), and weight control behavior (no weight control behavior, appropriate weight control behavior, inappropriate weight control behavior)...
February 8, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28221086/cassandra-s-regret-the-psychology-of-not-wanting-to-know
#8
Gerd Gigerenzer, Rocio Garcia-Retamero
Ignorance is generally pictured as an unwanted state of mind, and the act of willful ignorance may raise eyebrows. Yet people do not always want to know, demonstrating a lack of curiosity at odds with theories postulating a general need for certainty, ambiguity aversion, or the Bayesian principle of total evidence. We propose a regret theory of deliberate ignorance that covers both negative feelings that may arise from foreknowledge of negative events, such as death and divorce, and positive feelings of surprise and suspense that may arise from foreknowledge of positive events, such as knowing the sex of an unborn child...
March 2017: Psychological Review
https://www.readbyqxmd.com/read/28220185/small-bowel-protection-in-imrt-for-rectal-cancer-a%C3%A2-dosimetric-study-on-supine-vs-prone-position
#9
Julia Koeck, Katharina Kromer, Frank Lohr, Tobias Baack, Kerstin Siebenlist, Sabine Mai, Sylvia Büttner, Jens Fleckenstein, Frederik Wenz
BACKGROUND: This treatment planning study analyzes dose coverage and dose to organs at risk (OAR) in intensity-modulated radiotherapy (IMRT) of rectal cancer and compares prone vs. supine positioning as well as the effect of dose optimization for the small bowel (SB) by additional dose constraints in the inverse planning process. PATIENTS AND METHODS: Based on the CT datasets of ten male patients in both prone and supine position, a total of four different IMRT plans were created for each patient...
February 20, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28220139/genome-wide-single-nucleotide-polymorphism-discovery-and-the-construction-of-a-high-density-genetic-map-for-melon-cucumis-melo-l-using-genotyping-by-sequencing
#10
Che-Wei Chang, Yu-Hua Wang, Chih-Wei Tung
Although genotyping-by-sequencing (GBS) enables the efficient and low-cost generation of large numbers of markers, the utility of resultant genotypes are limited, because they are enormously error-prone and contain high proportions of missing data. In this study, we generated single nucleotide polymorphism (SNP) markers for 109 recombinant inbred lines of melon (Cucumis melo L.) using the GBS approach and ordered them according to their physical position on the draft double haploid line DHL92 genome. Next, by investigating associations between these SNPs, we discovered that some segments on the physical map conflict with linkage relationships...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28218381/an-accurate-method-to-quantify-breathing-induced-prostate-motion-for-patients-implanted-with-electromagnetic-transponders
#11
Tommaso Giandini, Costanza M V Panaino, Barbara Avuzzi, Sara Morlino, Sergio Villa, Nice Bedini, Gabriele Carabelli, Sarah C Frasca, Anna Romanyukha, Anatoly Rosenfeld, Emanuele Pignoli, Riccardo Valdagni, Mauro Carrara
PURPOSE: To validate and apply a method for the quantification of breathing-induced prostate motion (BIPM) for patients treated with radiotherapy and implanted with electromagnetic transponders for prostate localization and tracking. METHODS: For the analysis of electromagnetic transponder signal, dedicated software was developed and validated with a programmable breathing simulator phantom. The software was then applied to 1,132 radiotherapy fractions of 30 patients treated in supine position, and to a further 61 fractions of 2 patients treated in prone position...
February 11, 2017: Tumori
https://www.readbyqxmd.com/read/28217860/maternal-dietary-intake-during-pregnancy-and-its-association-to-birth-size-in-rural-malawi-a-cross-sectional-study
#12
Katrine G Hjertholm, Per Ole Iversen, Gerd Holmboe-Ottesen, Ibrahimu Mdala, Alister Munthali, Kenneth Maleta, Zumin Shi, Elaine Ferguson, Penjani Kamudoni
In low-resource settings, such as rural Malawi, pregnant women are prone to energy and micronutrient deficiencies with the consequence of delivering low-birth weight infants with higher risks of morbidity and mortality. This study aimed to examine the association between maternal dietary intakes during pregnancy and infant birth size. Dietary intakes of 203 pregnant women were assessed between 28 and 35 weeks of gestation and their infants' (n = 132) birth size measured. Intakes of energy, macronutrients, and 11 micronutrients were estimated using a 3-day interactive 24-hr diet recall...
February 19, 2017: Maternal & Child Nutrition
https://www.readbyqxmd.com/read/28215843/a-pdgfr%C3%AE-mediated-switch-toward-cd9-high-adipocyte-progenitors-controls-obesity-induced-adipose-tissue-fibrosis
#13
Geneviève Marcelin, Adaliene Ferreira, Yuejun Liu, Michael Atlan, Judith Aron-Wisnewsky, Véronique Pelloux, Yair Botbol, Marc Ambrosini, Magali Fradet, Christine Rouault, Corneliu Hénégar, Jean-Sébastien Hulot, Christine Poitou, Adriana Torcivia, Raphael Nail-Barthelemy, Jean-Christophe Bichet, Emmanuel L Gautier, Karine Clément
Obesity-induced white adipose tissue (WAT) fibrosis is believed to accelerate WAT dysfunction. However, the cellular origin of WAT fibrosis remains unclear. Here, we show that adipocyte platelet-derived growth factor receptor-α-positive (PDGFRα(+)) progenitors adopt a fibrogenic phenotype in obese mice prone to visceral WAT fibrosis. More specifically, a subset of PDGFRα(+) cells with high CD9 expression (CD9(high)) originates pro-fibrotic cells whereas their CD9(low) counterparts, committed to adipogenesis, are almost completely lost in the fibrotic WAT...
February 9, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28215003/improved-electromagnetic-tracking-for-catheter-path-reconstruction-with-application-in-high-dose-rate-brachytherapy
#14
Elodie Lugez, Hossein Sadjadi, Chandra P Joshi, Selim G Akl, Gabor Fichtinger
PURPOSE: Electromagnetic (EM) catheter tracking has recently been introduced in order to enable prompt and uncomplicated reconstruction of catheter paths in various clinical interventions. However, EM tracking is prone to measurement errors which can compromise the outcome of the procedure. Minimizing catheter tracking errors is therefore paramount to improve the path reconstruction accuracy. METHODS: An extended Kalman filter (EKF) was employed to combine the nonlinear kinematic model of an EM sensor inside the catheter, with both its position and orientation measurements...
February 18, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28214710/a-preliminary-investigation-of-the-relationships-between-historical-crash-and-naturalistic-driving
#15
Anurag Pande, Sai Chand, Neeraj Saxena, Vinayak Dixit, James Loy, Brian Wolshon, Joshua D Kent
This paper describes a project that was undertaken using naturalistic driving data collected via Global Positioning System (GPS) devices to demonstrate a proof-of-concept for proactive safety assessments of crash-prone locations. The main hypothesis for the study is that the segments where drivers have to apply hard braking (higher jerks) more frequently might be the "unsafe" segments with more crashes over a long-term. The linear referencing methodology in ArcMap was used to link the GPS data with roadway characteristic data of US Highway 101 northbound (NB) and southbound (SB) in San Luis Obispo, California...
February 16, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28214444/the-boosted-biomass-and-lipid-accumulation-in-chlorella-vulgaris-by-supplementation-of-synthetic-phytohormone-analogs
#16
Tingting Liu, Fei Liu, Chao Wang, Zhenyao Wang, Yuqin Li
This study attempted at maximizing biomass and lipid accumulation in Chlorella vulgaris by supplementation of natural abscisic acid (ABA) or synthetic 2,4-dichlorophenoxyacetic acid (2,4-D) and 1-naphthaleneacetic acid (NAA) hormone analogs. Amongst three tested additives, NAA-treatment performed remarkable promoting effect on cell growth and lipid biosynthesis. The favorable lipid productivity (418.6mg/L/d) of NAA-treated cells showed 1.48 and 2.24 times more than that of 2,4-D and ABA. NAA-treatment also positively modified the proportions of saturated (C16:0 and C18:0) and monounsaturated fatty acids (C18:1) which were prone to high-quality biofuels-making...
February 7, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28210048/effect-of-a-pelvic-wedge-and-belt-on-the-medial-and-lateral-hamstring-muscles-during-knee-flexion
#17
Won-Gyu Yoo
[Purpose] This study developed a pelvic wedge and belt and investigated their effects on the selective activation of medial and lateral hamstring muscles during knee flexion. [Subjects and Methods] Nine adults were enrolled. The participants performed exercises without and with the pelvic wedge and belt, and the electromyographic activities of the medial and lateral hamstring muscles were recorded. [Results] The activity of the medial hamstring was increased significantly when using the pelvic wedge and belt, while the activity of the lateral hamstring did not differ significantly...
January 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28209215/the-relevance-of-goal-orientation-for-motivation-in-high-versus-low-proneness-to-negative-symptoms
#18
Björn Schlier, Maike Engel, Anne-Katharina Fladung, Anja Fritzsche, Tania M Lincoln
BACKGROUND: The psychological mechanisms of why individuals with negative symptoms fail to initiate and perform goal-directed behavior are not well understood. Drawing on the reward-sensitivity and expectancy-value theories, we investigate whether negative symptom-like experiences (NSLE) are associated with generating less approach goals (aimed at reaching a positive outcome) and more avoidance goals (aimed at avoiding a negative outcome) and whether this type of goal-orientation explains motivational deficits (i...
June 2017: Journal of Behavior Therapy and Experimental Psychiatry
https://www.readbyqxmd.com/read/28208878/a-study-of-medication-compliance-in-geriatric-patients-with-chronic-illnesses-at-a-tertiary-care-hospital
#19
R Shruthi, R Jyothi, H P Pundarikaksha, G N Nagesh, T J Tushar
INTRODUCTION: Geriatric population is more prone for various chronic and recurrent illnesses like diabetes mellitus, hypertension, IHD, arthritic, neurodegenerative, gastrointestinal, ocular, genitourinary, respiratory disorders etc., which may require chronic medication with multiple drugs. Poor compliance in this age group accounts for medication wastage with increased cost of healthcare and substantial worsening of the disease with disability or death. Most of the human and economic costs associated with non adherence can be avoided by improving medication adherence...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208620/a-review-of-wearable-technologies-for-elderly-care-that-can-accurately-track-indoor-position-recognize-physical-activities-and-monitor-vital-signs-in-real-time
#20
REVIEW
Zhihua Wang, Zhaochu Yang, Tao Dong
Rapid growth of the aged population has caused an immense increase in the demand for healthcare services. Generally, the elderly are more prone to health problems compared to other age groups. With effective monitoring and alarm systems, the adverse effects of unpredictable events such as sudden illnesses, falls, and so on can be ameliorated to some extent. Recently, advances in wearable and sensor technologies have improved the prospects of these service systems for assisting elderly people. In this article, we review state-of-the-art wearable technologies that can be used for elderly care...
February 10, 2017: Sensors
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