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https://www.readbyqxmd.com/read/29778043/investigation-of-interactions-of-comtan-with-human-serum-albumin-by-mathematically-modeled-voltammetric-data-a-study-from-bio-interaction-to-biosensing
#1
Ali R Jalalvand, Sirous Ghobadi, Hector C Goicoechea, Hui-Wen Gu, Esmael Sanchooli
In this work, voltammetric data recorded at a glassy carbon electrode (GCE) were separately used to investigate the interactions of entacapone (Comtan, CAT) with human serum albumin (HSA). Then, an augmented data matrix was constructed by the combination of voltammetric and spectroscopic data and simultaneously analysed by multivariate curve resolution-alternating least squares (MCR-ALS) to obtain more information about CAT-HSA interactions. The absence of rotational ambiguities in results obtained by MCR-ALS was verified with the help of MCR-BANDS and we confirmed that the results were unambiguous and reliable...
May 16, 2018: Bioelectrochemistry
https://www.readbyqxmd.com/read/29778033/weight-and-the-vitamin-k-expoxide-reductase-1-genotype-primarily-contribute-to-the-warfarin-dosing-in-pediatric-patients-with-kawasaki-disease
#2
Zhouping Wang, Li Zhang, Ping Huang, Xiaoqiong Gu, Xiaofei Xie, Yanfei Wang, Wei Li, Qiyi Zeng
INTRODUCTION: Warfarin therapy is recommended in children with giant coronary artery aneurysms (GCAAs) after Kawasaki disease (KD). Large individual variability makes it difficult to predict the warfarin dose. Polymorphisms in the vitamin K expoxide reductase 1 (VKORC1) and cytochrome P4502C9 (CYP2C9) genes have been reported to influence the warfarin dose. We investigated the effects of the VKORC1 and CYP2C9 genotypes on the warfarin dose in pediatric patients with giant CAAs after KD...
May 8, 2018: Thrombosis Research
https://www.readbyqxmd.com/read/29777822/effects-of-global-signal-regression-and-subtraction-methods-on-resting-state-functional-connectivity-using-arterial-spin-labeling-data
#3
João Paulo Santos Silva, Luciana da Mata Mônaco, André Monteiro Paschoal, Ícaro Agenor Ferreira de Oliveira, Renata Ferranti Leoni
BACKGROUND: Arterial spin labeling (ASL) is an established magnetic resonance imaging (MRI) technique that is finding broader applications in functional studies of the healthy and diseased brain. To promote improvement in cerebral blood flow (CBF) signal specificity, many algorithms and imaging procedures, such as subtraction methods, were proposed to eliminate or, at least, minimize noise sources. Therefore, this study addressed the main considerations of how CBF functional connectivity (FC) is changed, regarding resting brain network (RBN) identification and correlations between regions of interest (ROI), by different subtraction methods and removal of residual motion artifacts and global signal fluctuations (RMAGSF)...
May 16, 2018: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29777596/morphological-analysis-of-pore-size-and-connectivity-in-a-thick-mixed-culture-biofilm
#4
Alex F Rosenthal, James S Griffin, Michael Wagner, Aaron I Packman, Oluwaseyi Balogun, George F Wells
Morphological parameters are commonly used to predict transport and metabolic kinetics in biofilms. Yet, quantification of biofilm morphology remains challenging due to imaging technology limitations and lack of robust analytical approaches. We present a novel set of imaging and image analysis techniques to estimate internal porosity, pore size distributions, and pore network connectivity to a depth of 1 mm at a resolution of 10 µm in a biofilm exhibiting both heterotrophic and nitrifying activity. Optical coherence tomography (OCT) scans revealed an extensive pore network with diameters as large as 110 µm directly connected to the biofilm surface and surrounding fluid...
May 19, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29777581/in-vivo-performance-of-a-visible-wavelength-optical-sensor-for-monitoring-intestinal-perfusion-and-oxygenation
#5
Mitchell B Robinson, Anna M Wisniowiecki, Ryan J Butcher, Mark A Wilson, M Nance Ericson, Gerard L Cote
Traumatic injury resulting in hemorrhage is a prevalent cause of death worldwide. The current standard of care for trauma patients is to restore hemostasis by controlling bleeding and administering intravenous volume resuscitation. Adequate resuscitation to restore tissue blood flow and oxygenation is critical within the first hours following admission to assess severity and avoid complications. However, current clinical methods for guiding resuscitation are not sensitive or specific enough to adequately understand the patient condition...
May 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29777519/combination-glucose-lowering-therapy-plans-in-t2dm-case-based-considerations
#6
REVIEW
Lawrence Blonde, Susana Dipp, Daniel Cadena
Type 2 diabetes mellitus (T2DM) is a complex disease, and while lifestyle interventions remain the cornerstone of therapy, most patients will also require pharmacotherapy. Current diabetes treatment guidelines and algorithms recommend an individualized approach to setting glycemic goals and selecting treatment. Although a single antihyperglycemic agent may be appropriate as the initial T2DM pharmacotherapy, the progressive nature of the disease due to declining pancreatic β-cell function will result in the vast majority of T2DM patients eventually requiring two or more antihyperglycemic agents...
May 18, 2018: Advances in Therapy
https://www.readbyqxmd.com/read/29777506/an-extended-kalman-filter-for-mouse-tracking
#7
Hongjun Choi, Mingi Kim, Onseok Lee
Animal tracking is an important tool for observing behavior, which is useful in various research areas. Animal specimens can be tracked using dynamic models and observation models that require several types of data. Tracking mouse has several barriers due to the physical characteristics of the mouse, their unpredictable movement, and cluttered environments. Therefore, we propose a reliable method that uses a detection stage and a tracking stage to successfully track mouse. The detection stage detects the surface area of the mouse skin, and the tracking stage implements an extended Kalman filter to estimate the state variables of a nonlinear model...
May 19, 2018: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29777441/mucosal-ablation-in-patients-with-barrett-s-esophagus-fry-or-freeze
#8
REVIEW
Kavel Visrodia, Liam Zakko, Kenneth K Wang
The management of Barrett's esophagus and early esophageal adenocarcinoma has shifted away from esophagectomy and toward endoscopic techniques, including endoscopic resection and ablative therapies. The most commonly used ablative therapies are radiofrequency ablation and cryotherapy. Radiofrequency ablation has risen to the top of the management algorithm due to its favorable safety profile and established track record of efficacy in patients with dysplastic Barrett's. Cryotherapy offers early promise as an alternatively safe and effective ablative modality...
May 17, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29777422/patellofemoral-cartilage-repair
#9
REVIEW
Alexandre Barbieri Mestriner, Jakob Ackermann, Andreas H Gomoll
PURPOSE OF REVIEW: This review provides an overview of well-established and newly developed cartilage repair techniques for cartilage defects in the patellofemoral joint (PFJ). An algorithm will be presented for approaching cartilage defects considering the distinct anatomy of both the patellar and trochlear articular surfaces. RECENT FINDINGS: Recent studies on cartilage repair in the PFJ have demonstrated improved outcomes in an attempt to delay or obviate the need for arthroplasty, and improve symptoms in young patients...
May 18, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29777411/spatial-environmental-risk-evaluation-of-potential-toxic-elements-in-stream-sediments
#10
I M H R Antunes, M T D Albuquerque, N Roque
Potential toxic elements (PTE), in stream sediments, were used as contamination indicators for the definition of high-/low-grade spatial clusters in the Monfortinho area (Central Portugal). A set of 271 stream sediment samples was used for spatial modelling and further definition of rings of enrichment-high and low rings. A three-step multivariate statistical and geostatistical approach was used: (1) principal components analysis for PTE's association evaluation and dimensionality reduction; (2) ordinary kriging as an unbiased interpolator for content inference and construction of a continuous representation of the considered attributes, at any arbitrary spatial location; (3) G clustering algorithm for the definition of high and low significance clusters...
May 18, 2018: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/29777341/improvement-of-neurological-and-ocular-symptoms-of-beh%C3%A3-et-s-disease-after-the-introduction-of-infliximab
#11
REVIEW
Marko Barešić, Mirna Reihl, Mario Habek, Nenad Vukojević, Branimir Anić
Behçet's disease is a chronic inflammatory condition of unknown origin characterized by multiple organ involvement. The most common symptoms of Behçet's disease are recurrent oral and/or genital ulcerations in combination with symptoms affecting eyes, skin, central and peripheral nervous system, blood vessels and gastrointestinal tract. We present a 43-year-old female patient with the history of recurrent episodes of genital and oral ulcerations, elevated acute phase reactants and skin lesions. The diagnosis of Behçet's disease has been delayed (for more than 10 years) and reached only after she developed neurological and ocular symptoms...
May 17, 2018: Rheumatology International
https://www.readbyqxmd.com/read/29777323/andriod-device-based-cervical-cancer-screening-for-resource-poor-settings
#12
Vidya Kudva, Keerthana Prasad, Shyamala Guruvare
Visual inspection with acetic acid (VIA) is an effective, affordable and simple test for cervical cancer screening in resource-poor settings. But considerable expertise is needed to differentiate cancerous lesions from normal lesions, which is lacking in developing countries. Many studies have attempted automation of cervical cancer detection from cervix images acquired during the VIA process. These studies used images acquired through colposcopy or cervicography. However, colposcopy is expensive and hence is not feasible as a screening tool in resource-poor settings...
May 18, 2018: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/29777302/emerging-strategies-in-brca-positive-pancreatic-cancer
#13
REVIEW
Adam Kowalewski, Łukasz Szylberg, Michał Saganek, Wojciech Napiontek, Paulina Antosik, Dariusz Grzanka
PURPOSE: We propose a treatment algorithm for PDAC with particular emphasis on BRCA1 or 2 mutation-positive patients. Pancreatic ductal adenocarcinoma (PDAC) is one of the deadliest diseases in the United States and Europe. BRCA1 and BRCA2 are among the most common of the known genetic mutations involved in familial PDAC. The optimal chemotherapy regimen to use for BRCA1 or 2 mutation carriers with PDAC is not yet established. As new treatment options emerge, algorithms must balance the need to give the best drugs first with ensuring that there are still beneficial options available for later...
May 18, 2018: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/29777175/artificial-intelligence-in-radiology
#14
REVIEW
Ahmed Hosny, Chintan Parmar, John Quackenbush, Lawrence H Schwartz, Hugo J W L Aerts
Artificial intelligence (AI) algorithms, particularly deep learning, have demonstrated remarkable progress in image-recognition tasks. Methods ranging from convolutional neural networks to variational autoencoders have found myriad applications in the medical image analysis field, propelling it forward at a rapid pace. Historically, in radiology practice, trained physicians visually assessed medical images for the detection, characterization and monitoring of diseases. AI methods excel at automatically recognizing complex patterns in imaging data and providing quantitative, rather than qualitative, assessments of radiographic characteristics...
May 17, 2018: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/29777174/how-does-blood-regulate-cerebral-temperatures-during-hypothermia
#15
Stephen Blowers, Ian Marshall, Michael Thrippleton, Peter Andrews, Bridget Harris, Iain Bethune, Prashant Valluri
Macro-modeling of cerebral blood flow can help determine the impact of thermal intervention during instances of head trauma to mitigate tissue damage. This work presents a bioheat model using a 3D fluid-porous domain coupled with intersecting 1D arterial and venous vessel trees. This combined vascular porous (VaPor) model resolves both cerebral blood flow and energy equations, including heat generated by metabolism, using vasculature extracted from MRI data and is extended using a tree generation algorithm...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29777163/evolution-of-cll-treatment-from-chemoimmunotherapy-to-targeted-and-individualized-therapy
#16
REVIEW
Jan A Burger, Susan O'Brien
During the past 5 years, a number of highly active novel agents, including kinase inhibitors targeting BTK or PI3Kδ, an antagonist of the antiapoptotic protein BCL-2, and new anti-CD20 monoclonal antibodies, have been added to the therapeutic armamentarium for patients with chronic lymphocytic leukaemia (CLL). In these exciting times, care is needed to optimally integrate these novel agents into the traditional treatment algorithm without overlooking or compromising the benefits of established treatments, especially chemoimmunotherapy...
May 18, 2018: Nature Reviews. Clinical Oncology
https://www.readbyqxmd.com/read/29777125/development-of-an-algorithm-to-identify-patients-with-physician-documented-insomnia
#17
Uri Kartoun, Rahul Aggarwal, Andrew L Beam, Jennifer K Pai, Arnaub K Chatterjee, Timothy P Fitzgerald, Isaac S Kohane, Stanley Y Shaw
We developed an insomnia classification algorithm by interrogating an electronic medical records (EMR) database of 314,292 patients. The patients received care at Massachusetts General Hospital (MGH), Brigham and Women's Hospital (BWH), or both, between 1992 and 2010. Our algorithm combined structured variables (such as International Classification of Diseases 9th Revision [ICD-9] codes, prescriptions, laboratory observations) and unstructured variables (such as text mentions of sleep and psychiatric disorders in clinical narrative notes)...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29777110/using-network-analysis-for-the-prediction-of-treatment-dropout-in-patients-with-mood-and-anxiety-disorders-a-methodological-proof-of-concept-study
#18
Wolfgang Lutz, Brian Schwartz, Stefan G Hofmann, Aaron J Fisher, Kristin Husen, Julian A Rubel
There are large health, societal, and economic costs associated with attrition from psychological services. The recently emerged, innovative statistical tool of complex network analysis was used in the present proof-of-concept study to improve the prediction of attrition. Fifty-eight patients undergoing psychological treatment for mood or anxiety disorders were assessed using Ecological Momentary Assessments four times a day for two weeks before treatment (3,248 measurements). Multilevel vector autoregressive models were employed to compute dynamic symptom networks...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29777090/reply-to-eckles-et-al-facebook-s-optimization-algorithms-are-highly-unlikely-to-explain-the-effects-of-psychological-targeting
#19
S C Matz, M Kosinski, G Nave, D J Stillwell
No abstract text is available yet for this article.
May 18, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29776972/improving-serum-calcium-test-ordering-according-to-a-decision-algorithm
#20
Daniel K Faria, Leandro U Taniguchi, Luiz A M Fonseca, Mario Ferreira-Junior, Francisco J B Aguiar, Arnaldo Lichtenstein, Nairo M Sumita, Alberto J S Duarte, Maria M Sales
AIM: To detect differences in the pattern of serum calcium tests ordering before and after the implementation of a decision algorithm. METHODS: We studied patients admitted to an internal medicine ward of a university hospital on April 2013 and April 2016. Patients were classified as critical or non-critical on the day when each test was performed. Adequacy of ordering was defined according to adherence to a decision algorithm implemented in 2014. RESULTS: Total and ionised calcium tests per patient-day of hospitalisation significantly decreased after the algorithm implementation; and duplication of tests (total and ionised calcium measured in the same blood sample) was reduced by 49%...
May 18, 2018: Journal of Clinical Pathology
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