keyword
MENU ▼
Read by QxMD icon Read
search

model-based model-free

keyword
https://www.readbyqxmd.com/read/28334911/mertk-rs4374383-variant-predicts-incident-nonalcoholic-fatty-liver-disease-and-diabetes-role-of-mononuclear-cell-activation-and-adipokine-response-to-dietary-fat
#1
Giovanni Musso, Maurizio Cassader, Franco De Michieli, Elena Paschetta, Silvia Pinach, Francesca Saba, Daria Bongiovanni, Luciana Framarin, Mara Berrutti, Nicola Leone, Stefania Corvisieri, Renato Parente, Federica Molinaro, Antonio Sircana, Bo Simona, Roberto Gambino
The loss-of-function rs4374383 G>A variant in Myeloid-epithelial-reproductive Tyrosine Kinase (MERTK) gene has been linked to hepatic fibrosis in chronic liver diseases. MERTK is expressed by immune and non-immune cells involved in inflammation, metabolism and vascular homeostasis. We assessed the impact of MERTK rs4374383 G>A variant on nonalcoholic fatty liver disease (NAFLD) incidence and severity and on glucose and lipid metabolism.We followed-up 305 healthy nonobese nondiabetic, metabolic syndrome-free insulin sensitive participants in a population-based study, characterized for MERTK G>A polymorphism, adipokine profile and inflammatory markers...
March 8, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28334688/preparation-of-poly-n-isopropylacrylamide-block-acrylic-acid-encapsulated-proteinaceous-microbubbles-for-delivery-of-doxorubicin
#2
Xiaochen Ma, Qingxia Liu
Inspired by theranostic technologies, we electrostatically loaded proteinaceous microbubbles (MBs) with a model drug, doxorubicin (Dox) to couple their utilizations in diagnostic imaging with drug loading. A temperature-sensitive polymer, poly(N-isopropylacrylamide-block-acrylic acid) (poly(NIPAM-b-AAc)) was used to encapsulate the Dox-loaded MBs to prevent premature release and to control the Dox release thermally. An LCST of 39°C, slightly higher than normal body temperatures, enables the release of Dox through a conformational change of the polymer shell upon moderate heating...
March 12, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28334523/transformable-nanomaterials-as-artificial-extracellular-matrix-for-inhibiting-tumor-invasion-and-metastasis
#3
Xiao-Xue Hu, Ping-Ping He, Guo-Bin Qi, Yu-Juan Gao, Yao-Xin Lin, Chao Yang, Pei-Pei Yang, Hongxun Hao, Lei Wang, Hao Wang
Tumor metastasis is one of the big challenges in cancer treatment and is often associated with high patient mortality. Until now, there is an agreement that tumor invasion and metastasis are related to degradation of extracellular matrix (ECM) by enzymes. Inspired by the formation of natural ECM and the in situ self-assembly strategy developed in our group, herein, we in situ constructed an artificial extracellular matrix (AECM) based on transformable Laminin (LN)-mimic peptide 1 (BP-KLVFFK-GGDGR-YIGSR) for inhibition of tumor invasion and metastasis...
March 23, 2017: ACS Nano
https://www.readbyqxmd.com/read/28334305/variance-component-score-test-for-time-course-gene-set-analysis-of-longitudinal-rna-seq-data
#4
Denis Agniel, Boris P Hejblum
As gene expression measurement technology is shifting from microarrays to sequencing, the statistical tools available for their analysis must be adapted since RNA-seq data are measured as counts. It has been proposed to model RNA-seq counts as continuous variables using nonparametric regression to account for their inherent heteroscedasticity. In this vein, we propose tcgsaseq, a principled, model-free, and efficient method for detecting longitudinal changes in RNA-seq gene sets defined a priori. The method identifies those gene sets whose expression varies over time, based on an original variance component score test accounting for both covariates and heteroscedasticity without assuming any specific parametric distribution for the (transformed) counts...
March 10, 2017: Biostatistics
https://www.readbyqxmd.com/read/28333968/a-genome-wide-association-study-of-thyroid-stimulating-hormone-and-free-thyroxine-in-danish-children-and-adolescents
#5
Tenna Ruest Haarmark Nielsen, Emil Vincent Rosenbaum Appel, Mathilde Svendstrup, Johanne Dam Ohrt, Maria Dahl, Cilius Esmann Fonvig, Mette Hollensted, Christian Theil Have, Haja N Kadarmideen, Oluf Pedersen, Torben Hansen, Jens-Christian Holm, Niels Grarup
BACKGROUND: Hypothyroidism is associated with obesity, and thyroid hormones are involved in the regulation of body composition, including fat mass. Genome-wide association studies (GWAS) in adults have identified 19 and 6 loci associated with plasma concentrations of thyroid stimulating hormone (TSH) and free thyroxine (fT4), respectively. OBJECTIVE: This study aimed to identify and characterize genetic variants associated with circulating TSH and fT4 in Danish children and adolescents and to examine whether these variants associate with obesity...
2017: PloS One
https://www.readbyqxmd.com/read/28333550/adherence-to-dietary-recommendations-supports-canadian-children-s-academic-achievement
#6
Erin L Faught, Genevieve Montemurro, Kate E Storey, Paul J Veugelers
PURPOSE: We aimed to determine if adherence to established Canadian, American, and WHO-developed nutrition recommendations supported children's academic achievement. METHODS: Data from a health survey of 1595 grade 5 students in Alberta, Canada, was used. Dietary intake was assessed using a validated food frequency questionnaire. Adherence to recommendations for food group servings, saturated fat intake, and free sugars intake was assessed. Survey data were linked to grade 6 standardized exam results...
March 23, 2017: Canadian Journal of Dietetic Practice and Research
https://www.readbyqxmd.com/read/28333040/rigid-motion-correction-of-dual-opposed-planar-projections-in-single-photon-imaging
#7
Georgios I Angelis, William Ryder, John Gillam, Frederic Boisson, Andre Kyme, Roger Fulton, Steven Meikle, Peter Kench
Awake and/or freely moving small animal single photon emission imaging allows the continuous study of molecules exhibiting slow kinetics without the need to restrain or anaesthetise the animals. Estimating motion free projections in freely moving small animal planar imaging can be considered as a limited angle tomography problem, except that we wish to estimate the 2D planar projections rather than the 3D volume, where the angular sampling in all three axes depends on the rotational motion of the animal. In this study, we hypothesise that the motion corrected planar projections estimated by reconstructing an estimate of the 3D volume using an iterative motion compensating reconstruction algorithm and integrating it along the projection path, will closely match the true, motion-less, planar distribution regardless of the object motion...
March 23, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28332667/arrested-coalescence-of-viscoelastic-droplets-triplet-shape-and-restructuring
#8
Prerna Dahiya, Andrew DeBenedictis, Timothy J Atherton, Marco Caggioni, Stuart W Prescott, Richard W Hartel, Patrick T Spicer
The stability of shapes formed by three viscoelastic droplets during their arrested coalescence has been investigated using micromanipulation experiments. Addition of a third droplet to arrested droplet doublets is shown to be controlled by the balance between interfacial pressures driving coalescence and internal elasticity that resists total consolidation. The free fluid available within the droplets controls the transmission of stress during droplet combination and allows connections to occur via formation of a neck between the droplets...
March 23, 2017: Soft Matter
https://www.readbyqxmd.com/read/28332433/the-cost-effectiveness-of-alectinib-in-anaplastic-lymphoma-kinase-positive-alk-advanced-nsclc-previously-treated-with-crizotinib
#9
J J Carlson, W Canestaro, A Ravelo, W Wong
Introduction Anaplastic lymphoma kinase (ALK) targeting drugs provide an important option for advanced non-small cell lung cancer patients with this distinct tumor type; however, there is considerable uncertainty as to which drug provides the optimal value after crizotinib treatment. This study estimated the cost-utility of alectinib vs ceritinib from a US payer perspective. Methods A cost-utility model was developed using partition survival methods and three health states: progression-free (PF), post-progression (PP), and death...
March 23, 2017: Journal of Medical Economics
https://www.readbyqxmd.com/read/28332399/modification-of-molecular-conductance-by-in-situ-deprotection-of-thiol-based-porphyrin
#10
Qi Zhou, Atsushi Yamada, Qingguo Feng, Austin Hoskins, Barry D Dunietz, Kim M Lewis
Acetylthio-protected free base porphyrins are used to form scanning tunneling microscope-molecular break junctions. The porphyrin molecules are deprotected in-situ, before the self-assembly. Two types of molecular junctions are formed in the junctions: Au-S-Por-SAc-Au and Au-S-Por-S-Au. Lower conductance values and higher conductance values are observed. Computational modeling attributes the lower conductance to the Au-S-Por-SAc-Au junctions and the higher conductance to the Au-S-Por-S-Au junctions. First principles calculation suggests that the reduced conductance in the protected porphyrin originates from the presence of the acetyl end groups (-COCH3), rather than from the elongation of the sulfur-gold (S-Au) bonds at the tip-molecule interface...
March 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28330607/association-between-anti-thymocyte-globulin-exposure-and-survival-outcomes-in-adult-unrelated-haemopoietic-cell-transplantation-a-multicentre-retrospective-pharmacodynamic-cohort-analysis
#11
Rick Admiraal, Stefan Nierkens, Moniek A de Witte, Eefke J Petersen, Ger-Jan Fleurke, Luka Verrest, Svetlana V Belitser, Robbert G M Bredius, Reinier A P Raymakers, Catherijne A J Knibbe, Monique C Minnema, Charlotte van Kesteren, Jurgen Kuball, Jaap J Boelens
BACKGROUND: Anti-thymocyte globulin (ATG) is used to prevent graft-versus-host disease (GvHD) after allogeneic haemopoietic cell transplantation (HCT). However, ATG can also cause delayed immune reconstitution of T cells, negatively affecting survival. We studied the relation between exposure to ATG and clinical outcomes in adult patients with acute leukaemia and myelodysplastic syndrome. METHODS: We did a retrospective, pharmacokinetic-pharmacodynamic analysis of data from patients with acute lymphoid leukaemia, acute myeloid leukaemia, or myelodysplastic syndrome receiving their first T-cell repleted allogeneic peripheral blood stem cell HCT with ATG (thymoglobulin) as part of non-myeloablative conditioning from March 1, 2004, to June 1, 2015...
March 16, 2017: Lancet Haematology
https://www.readbyqxmd.com/read/28329361/sex-hormones-affect-outcome-in-arrhythmogenic-right-ventricular-cardiomyopathy-dysplasia-from-a-stem-cell-derived-cardiomyocyte-based-model-to-clinical-biomarkers-of-disease-outcome
#12
Deniz Akdis, Ardan M Saguner, Khooshbu Shah, Chuanyu Wei, Argelia Medeiros-Domingo, Arnold von Eckardstein, Thomas F Lüscher, Corinna Brunckhorst, H S Vincent Chen, Firat Duru
Aims: Arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) is characterized by fibrofatty infiltration of the myocardium and ventricular arrhythmias that may lead to sudden cardiac death. It has been observed that male patients develop the disease earlier and present with more severe phenotypes as compared to females. Thus, we hypothesized that serum levels of sex hormones may contribute to major arrhythmic cardiovascular events (MACE) in patients with ARVC/D. Methods and results: The serum levels of five sex hormones, sex hormone-binding globulin, high sensitivity troponin T, pro-brain natriuretic peptide, cholesterol, triglycerides, insulin, and glucose were measured in 54 ARVC/D patients (72% male)...
February 18, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28328700/lumbar-tactile-acuity-in-patients-with-low-back-pain-and-healthy-controls-systematic-review-and-meta-analysis
#13
Wacław Adamczyk, Kerstin Luedtke, Edward Saulicz
OBJECTIVE: Diminished tactile acuity in chronic non-neuropathic pain syndromes has been attributed to central pain processing and cortical reorganization. The latter was recently targeted in clinical trials that demonstrated no clear advantages over traditional approaches for the reduction of nonspecific low back pain (LBP). The aim of this systematic review and meta-analysis was to summarize the current evidence on tactile acuity in LBP and pain-free controls. METHODS: Six databases were independently searched by 2 researchers...
March 21, 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28327958/risk-factors-and-a-prognostic-score-for-survival-after-autologous-stem-cell-transplantation-for-relapsed-or-refractory-hodgkin-lymphoma
#14
P J Bröckelmann, H Müller, O Casasnovas, M Hutchings, B von Tresckow, M Jürgens, S J McCall, F Morschhauser, M Fuchs, P Borchmann, C H Moskowitz, A Engert
BACKGROUND: Novel agents are changing the treatment of relapsed or refractory Hodgkin lymphoma (HL). Nevertheless, high-dose chemotherapy and autologous stem-cell transplantation (ASCT) are considered standard of care in eligible patients. To identify patients who could benefit most from novel therapeutic approaches, we investigated a comprehensive set of risk factors for survival after ASCT. METHODS: In this multinational prognostic multivariable modeling study, 23 potential risk factors (RF) were retrospectively evaluated in HL patients from nine prospective trials with multivariable Cox proportional hazards regression analyses (part I)...
March 8, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28327096/exploring-why-a-complex-intervention-piloted-in-general-practices-did-not-result-in-an-increase-in-chlamydia-screening-and-diagnosis-a-qualitative-evaluation-using-the-fidelity-of-implementation-model
#15
R Allison, D M Lecky, K Town, C Rugman, E J Ricketts, N Ockendon-Powell, K A Folkard, J K Dunbar, C A M McNulty
BACKGROUND: Chlamydia trachomatis (chlamydia) is the most commonly diagnosed sexually transmitted infection (STI) in England; approximately 70% of diagnoses are in sexually active young adults aged under 25. To facilitate opportunistic chlamydia screening in general practice, a complex intervention, based on a previously successful Chlamydia Intervention Randomised Trial (CIRT), was piloted in England. The modified intervention (3Cs and HIV) aimed to encourage general practice staff to routinely offer chlamydia testing to all 15-24 year olds regardless of the type of consultation...
March 21, 2017: BMC Family Practice
https://www.readbyqxmd.com/read/28326829/endogenous-sex-hormone-levels-and-coronary-heart-disease-risk-in-postmenopausal-women-a-meta-analysis-of-prospective-studies
#16
Haihui Wang, Yuehua Li, Xinlu Wang, Jianhong Bu, Guoliang Yan, Danfei Lou
Background Low testosterone levels have been associated with coronary heart disease (CHD) morbidity and mortality in men, but the influence of hormones in postmenopausal women is unclear. This meta-analysis aimed to examine whether there is an association between endogenous sex hormones and CHD risk in postmenopausal women. Methods A systematic search of the PubMed and EMBASE databases from 1966 to 30 November 2016 was performed for prospective studies that reported an association between endogenous sex hormones and CHD in postmenopausal women...
April 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28326788/copolymerization-on-selective-substrates-experimental-test-and-computer-simulations
#17
Elena Yu Kozhunova, Alexey A Gavrilov, Mikhail Yur'Evich Zaremski, Alexander V Chertovich
We explore the influence of a selective substrate on the composition and sequence statistics during the free radical copolymerization. In particular, we study the radical copolymerization of styrene and acrylic acid in bulk and in silica pores of different sizes. We show that the substrate affects both polymer composition and sequence statistics. We use dissipative particle dynamics simulations to study the polymerization process in detail, trying to pinpoint the parameters responsible for the observed differences in the polymer chain composition and sequences...
March 22, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28326050/what-to-choose-next-a-paradigm-for-testing-human-sequential-decision-making
#18
Elisa M Tartaglia, Aaron M Clarke, Michael H Herzog
Many of the decisions we make in our everyday lives are sequential and entail sparse rewards. While sequential decision-making has been extensively investigated in theory (e.g., by reinforcement learning models) there is no systematic experimental paradigm to test it. Here, we developed such a paradigm and investigated key components of reinforcement learning models: the eligibility trace (i.e., the memory trace of previous decision steps), the external reward, and the ability to exploit the statistics of the environment's structure (model-free vs...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28325490/development-and-application-of-a-new-in-line-coupling-of-a-miniaturized-boronate-affinity-monolithic-column-with-capillary-zone-electrophoresis-for-the-selective-enrichment-and-analysis-of-cis-diol-containing-compounds
#19
Maria Betzabeth Espina-Benitez, Jérôme Randon, Claire Demesmay, Vincent Dugas
An integrated, miniaturized and fully automated system was developed for the analysis (preconcentration/purification, separation and detection) of cis-diol containing molecules in complex matrices. This innovative in-line coupling system was achieved via the in-situ and localized synthesis of a short segment of silica-based monolith at the inlet of a 75-μm inner diameter fused silica capillary. The monolithic segment was locally functionalized with an acrylamide derivative of phenylboronic acid by free radical photopolymerization within 10min of irradiation time...
March 9, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28325129/lobectomy-for-non-small-cell-lung-carcinoma-a-nationwide-study-of-short-and-long-term-survival
#20
G N Oskarsdottir, H Halldorsson, M I Sigurdsson, B M Fridriksson, K Baldvinsson, A W Orrason, S Jonsson, M Planck, T Gudbjartsson
INTRODUCTION: Lobectomy is the standard curative treatment for non-small cell carcinoma (NSCLC) of the lung. Most studies on lobectomy have focused on short-term outcome and 30-day mortality. The aim of this study was to determine both short-term and long-term surgical outcome in all patients who underwent lobectomy for NSCLC in Iceland over a 24-year period. MATERIAL AND METHODS: The study involved 489 consecutive patients with NSCLC who underwent lobectomy with curative intent in Iceland, 1991-2014...
March 21, 2017: Acta Oncologica
keyword
keyword
103847
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"