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https://www.readbyqxmd.com/read/28806786/an-economic-evaluation-of-vector-control-in-the-age-of-a-dengue-vaccine
#1
Christopher Fitzpatrick, Alexander Haines, Mathieu Bangert, Andrew Farlow, Janet Hemingway, Raman Velayudhan
INTRODUCTION: Dengue is a rapidly emerging vector-borne Neglected Tropical Disease, with a 30-fold increase in the number of cases reported since 1960. The economic cost of the illness is measured in the billions of dollars annually. Environmental change and unplanned urbanization are conspiring to raise the health and economic cost even further beyond the reach of health systems and households. The health-sector response has depended in large part on control of the Aedes aegypti and Ae...
August 14, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28806613/automatic-blood-vessels-segmentation-based-on-different-retinal-maps-from-octa-scans
#2
Nabila Eladawi, Mohammed Elmogy, Omar Helmy, Ahmed Aboelfetouh, Alaa Riad, Harpal Sandhu, Shlomit Schaal, Ayman El-Baz
The retinal vascular network reflects the health of the retina, which is a useful diagnostic indicator of systemic vascular. Therefore, the segmentation of retinal blood vessels is a powerful method for diagnosing vascular diseases. This paper presents an automatic segmentation system for retinal blood vessels from Optical Coherence Tomography Angiography (OCTA) images. The system segments blood vessels from the superficial and deep retinal maps for normal and diabetic cases. Initially, we reduced the noise and improved the contrast of the OCTA images by using the Generalized Gauss-Markov random field (GGMRF) model...
August 7, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28805262/mesenchymal-stem-cells-attenuate-liver-fibrosis-by-suppressing-th17-cells
#3
Neda Milosavljevic, Marina Gazdic, Bojana Simovic Markovic, Aleksandar Arsenijevic, Jasmin Nurkovic, Zana Dolicanin, Nemanja Jovicic, Ilija Jeftic, Valentin Djonov, Nebojsa Arsenijevic, Miodrag L Lukic, Vladislav Volarevic
This study investigates molecular and cellular mechanisms involved in mesenchymal stem cell (MSCs)-mediated modulation of IL-17 signaling during liver fibrosis. Mice received CCl4 (1μL/g intraperitoneally) twice/week for 1 month. MSCs (1x10(6) ), or MSC-conditioned medium (MSC-CM) were intravenously injected 24h after CCl4 and on every 7(th) day. Liver fibrosis was determined by macroscopic examination, histological analysis, Sirius red staining and RT-PCR. Serum levels of cytokines, IDO and kynurenine were determined by ELISA...
August 14, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28803784/race-ethnic-disparities-in-cardiometabolic-risk-profiles-among-stroke-survivors-with-undiagnosed-diabetes-and-prediabetes-in-the-united-states
#4
Okkyung Kim, Bruce Ovbiagele, Natalie Valle, Daniela Markovic, Amytis Towfighi
BACKGROUND AND PURPOSE: Up to 25% of the U.S. population has undiagnosed diabetes. Diabetes and stroke both disproportionately afflict race/ethnic minorities. We assessed race/ethnic differences in the prevalence of undiagnosed diabetes, prediabetes, and cardiometabolic risk profiles among stroke survivors in the United States. METHODS: The prevalence of diabetes and prediabetes among adults (≥20 years) with a self-reported history of stroke was assessed using the National Health and Nutrition Examination Surveys (NHANES) from 1999 to 2010...
August 10, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28803497/exploring-the-potential-value-of-improved-care-for-secondary-hyperparathyroidism-with-a-novel-calcimimetic-therapy
#5
Björn Stollenwerk, Sergio Iannazzo, Kerry Cooper, Vasily Belozeroff
AIMS: This study explored the use of a value-based pricing approach for the new calcimimetic etelcalcetide indicated for the treatment of secondary hyperparathyroidism (SHPT) in patients receiving hemodialysis. It used the US payer perspective and applied the cost-effectiveness framework. Because etelcalcetide is an intravenous therapy that can be titrated for individual patients, and because its utilization is yet to be assessed in real world settings, a range of plausible doses were estimated for etelcalcetide to define a range of prices...
August 14, 2017: Journal of Medical Economics
https://www.readbyqxmd.com/read/28802674/the-yusuf-peto-method-was-not-a-robust-method-for-meta-analyses-of-rare-events-data-from-antidepressant-trials
#6
Tarang Sharma, Peter C Gøtzsche, Oliver Kuss
OBJECTIVE: To identify the validity of effect estimates for serious rare adverse events in clinical study reports of antidepressants trials, across different meta-analysis methods. STUDY DESIGN AND SETTING: Four serious rare adverse events (all-cause mortality, suicidality, aggressive behaviour and akathisia) were meta-analysed using different methods. The Yusuf-Peto odds ignores studies with no events, was compared with the alternative approaches of generalised linear mixed models (GLMM), conditional logistic regression, a Bayesian approach using Markov Chain Monte Carlo (MCMC) and a beta-binomial regression model...
August 9, 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/28802062/modeling-the-epidemic-of-nonalcoholic-fatty-liver-disease-demonstrates-an-exponential-increase-in-burden-of-disease
#7
Chris Estes, Homie Razavi, Rohit Loomba, Zobair Younossi, Arun J Sanyal
BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) and resulting nonalcoholic steatohepatitis (NASH) are highly prevalent in the US, where they are a growing cause of cirrhosis and hepatocellular carcinoma (HCC), and increasingly, an indicator for liver transplantation. METHODS: A Markov model was used to forecast NAFLD disease progression. Incidence of NAFLD was based on historical and projected changes in adult prevalence of obesity and type 2 diabetes mellitus (DM)...
August 12, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28801940/examining-the-association-between-depression-and-obesity-during-a-weight-management-programme
#8
N R Fuller, J Burns, A Sainsbury, S Horsfield, F da Luz, S Zhang, G Denyer, T P Markovic, I D Caterson
The prevalence of depression in those with obesity is reported to be as high as double that in individuals of normal weight. There is potentially a bi-directional relationship between obesity and depression. Some research has suggested that depression results in weight gain and obesity, and other studies have suggested that those with obesity are more likely to develop depression at a later stage. The aim of this study was to investigate the association of depression symptoms with weight change over a 12-month study...
August 11, 2017: Clinical Obesity
https://www.readbyqxmd.com/read/28800978/modelling-landscape-dynamics-with-lst-in-protected-areas-of-western-ghats-karnataka
#9
T V Ramachandra, Setturu Bharath, Nimish Gupta
Forest ecosystems sustain biota on the earth as they are habitat to diverse biotic species, arrests soil erosion, play a crucial role in water cycle, sequester carbon, and helps in mitigating the impacts of global warming. Large scale land use land cover (LULC) change leading to deforestation is one of the drivers of global climate changes and alteration of biogeochemical cycles with significant consequences in ecosystem services and biodiversity. This has necessitated the investigation of LULC by mapping, monitoring and modelling spatio-temporal patterns and evaluating these in the context of human-environment interactions...
August 8, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28799405/the-spatiotemporal-master-equation-approximation-of-reaction-diffusion-dynamics-via-markov-state-modeling
#10
Stefanie Winkelmann, Christof Schütte
Accurate modeling and numerical simulation of reaction kinetics is a topic of steady interest. We consider the spatiotemporal chemical master equation (ST-CME) as a model for stochastic reaction-diffusion systems that exhibit properties of metastability. The space of motion is decomposed into metastable compartments, and diffusive motion is approximated by jumps between these compartments. Treating these jumps as first-order reactions, simulation of the resulting stochastic system is possible by the Gillespie method...
December 7, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28798777/mesenchymal-stem-cells-promote-metastasis-of-lung-cancer-cells-by-downregulating-systemic-antitumor-immune-response
#11
Marina Gazdic, Bojana Simovic Markovic, Nemanja Jovicic, Maja Misirkic-Marjanovic, Valentin Djonov, Vladimir Jakovljevic, Nebojsa Arsenijevic, Miodrag L Lukic, Vladislav Volarevic
Since majority of systemically administered mesenchymal stem cells (MSCs) become entrapped within the lungs, we used metastatic model of lung cancer, induced by intravenous injection of Lewis lung cancer 1 (LLC1) cells, to investigate the molecular mechanisms involved in MSC-mediated modulation of metastasis. MSCs significantly augmented lung cancer metastasis, attenuate concentrations of proinflammatory cytokines (TNF-α, IL-17), and increase levels of immunosuppressive IL-10, nitric oxide, and kynurenine in sera of LLC1-treated mice...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28796613/segmentation-of-vasculature-from-fluorescently-labeled-endothelial-cells-in-multi-photon-microscopy-images
#12
Russell Bates, Benjamin Irving, Bostjan Markelc, Jakob Kaeppler, Graham Brown, Ruth J Muschel, Sir Michael Brady, Vicente Grau, Julia A Schnabel
Vasculature is known to be of key biological significance, especially in the study of tumors. As such, considerable effort has been focused on the automated segmentation of vasculature in medical and pre-clinical images. The majority of vascular segmentation methods focus on bloodpool labeling methods, however, particularly in the study of tumors it is of particular interest to be able to visualize both perfused and non-perfused vasculature. Imaging vasculature by highlighting the endothelium provides a way to separate the morphology of vasculature from the potentially confounding factor of perfusion...
August 9, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28796610/deep-learning-markov-random-field-for-semantic-segmentation
#13
Ziwei Liu, Xiaoxiao Li, Ping Luo, Chen Change Loy, Xiaoou Tang
Semantic segmentation tasks can be well modeled by Markov Random Field (MRF). This paper addresses semantic segmentation by incorporating high-order relations and mixture of label contexts into MRF. Unlike previous works that optimized MRFs using iterative algorithm, we solve MRF by proposing a Convolutional Neural Network (CNN), namely Deep Parsing Network (DPN), which enables deterministic end-to-end computation in a single forward pass. Specifically, DPN extends a contemporary CNN to model unary terms and additional layers are devised to approximate the mean field (MF) algorithm for pairwise terms...
August 9, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28795429/comparison-of-image-intensity-local-and-multi-atlas-priors-in-brain-tissue-classification
#14
Liping Wang, Frédéric Labrosse, Reyer Zwiggelaar
PURPOSE: Automated and accurate tissue classification in 3D brain Magnetic Resonance images is essential in volumetric morphometry or as a preprocessing step for diagnosing brain diseases. However, noise, intensity inhomogeneity and partial volume effects limit the classification accuracy of existing methods. This paper provides a comparative study on the contributions of three commonly used image information priors for tissue classification in normal brains: image intensity, local and multi-atlas priors...
August 10, 2017: Medical Physics
https://www.readbyqxmd.com/read/28795341/adjuvant-trastuzumab-therapy-for-early-her2-positive-breast-cancer-in-iran-a-cost-effectiveness-and-scenario-analysis-for-an-optimal-treatment-strategy
#15
Amir Ansaripour, Carin A Uyl-de Groot, W Ken Redekop
INTRODUCTION: Clinical guidelines have recommended a 1-year trastuzumab regimen as standard care for early human epidermal growth factor receptor 2 (HER2)-positive breast cancer; however, this recommendation can have a dramatic impact on total drug expenditures in middle-income countries (MICs). We performed a cost-effectiveness analysis from the Iranian healthcare perspective to find an optimum duration of trastuzumab use in Iran. METHOD: We compared four treatment strategies comprising chemotherapy and varying durations of trastuzumab use (no trastuzumab, 6, 9 months, and 1 year), and a Markov model and probabilistic sensitivity analysis were used to estimate the costs and effects of the strategies...
August 9, 2017: PharmacoEconomics
https://www.readbyqxmd.com/read/28792195/can-hydrophilic-coated-catheters-be-beneficial-for-the-public-healthcare-system-in-brazil-a-cost-effectiveness-analysis-in-patients-with-spinal-cord-injuries
#16
José Carlos Truzzi, Vanessa Teich, Camila Pepe
INTRODUCTION: Detrusor sphincter dyssynergia affects 70% to 80% of all spinal cord injury patients, resulting in increased risk of urinary tract infections (UTIs) and potential exposure to antimicrobial resistance. In Brazil, local guidelines recommend intermittent catheterization as the best method for bladder emptying, and two catheter types are available: the conventional uncoated PVC and the hydrophilic coated catheters. OBJECTIVE: To evaluate the cost-effectiveness of two types of catheters for intermittent catheterization from the perspective of the Brazilian public healthcare system...
August 8, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28792064/evidence-of-increasing-diversification-of-zika-virus-strains-isolated-in-the-american-continent
#17
Fabián Aldunate, Fabiana Gámbaro, Alvaro Fajardo, Martín Soñora, Juan Cristina
Zika virus (ZIKV) is a member of the family Flaviviridae. ZIKV emerged in Brazil in 2015, causing an unprecedented epidemic and since then the virus has rapidly spread throughout the Americas. These facts highlight the need of detailed phylogenetic studies to understand the emergence, spread and evolution of ZIKV populations. For these reasons, a Bayesian coalescent Markov Chain Monte Carlo analysis of complete genome sequences of ZIKV strains recently isolated in the American continent was performed. The results of these studies revealed an increasing diversification of ZIKV strains in different genetic lineages and co-circulation of distinct genetic lineages in several countries in the region...
August 9, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28790419/a-novel-fabrication-approach-for-multifunctional-graphene-based-thin-film-nano-composite-membranes-with-enhanced-desalination-and-antibacterial-characteristics
#18
Hanaa M Hegab, Ahmed ElMekawy, Thomas G Barclay, Andrew Michelmore, Linda Zou, Dusan Losic, Christopher P Saint, Milena Ginic-Markovic
A practical fabrication technique is presented to tackle the trade-off between the water flux and salt rejection of thin film composite (TFC) reverse osmosis (RO) membranes through controlled creation of a thinner active selective polyamide (PA) layer. The new thin film nano-composite (TFNC) RO membranes were synthesized with multifunctional poly tannic acid-functionalized graphene oxide nanosheets (pTA-f-GO) embedded in its PA thin active layer, which is produced through interfacial polymerization. The incorporation of pTA-f-GOL into the fabricated TFNC membranes resulted in a thinner PA layer with lower roughness and higher hydrophilicity compared to pristine membrane...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28789643/factors-associated-with-the-effectiveness-and-reach-of-nhs-stop-smoking-services-for-pregnant-women-in-england
#19
L R Vaz, T Coleman, S J Fahy, S Cooper, L Bauld, L Szatkowski, J Leonardi-Bee
BACKGROUND: The UK National Health Service provides Stop Smoking Services for pregnant women (SSSP) but there is a lack of evidence concerning how these are best organised. This study investigates influences on services' effectiveness and also on their propensity to engage pregnant smokers with support in stopping smoking. METHODS: Survey data collected from 121/141 (86%) of SSSP were augmented with data from Hospital Episode Statistics and the 2011 UK National Census...
August 8, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28789623/the-cost-effectiveness-of-active-surveillance-compared-to-watchful-waiting-and-radical-prostatectomy-for-low-risk-localised-prostate-cancer
#20
Chunhuan Lao, Richard Edlin, Paul Rouse, Charis Brown, Michael Holmes, Peter Gilling, Ross Lawrenson
BACKGROUND: Radical prostatectomy is the most common treatment for localised prostate cancer in New Zealand. Active surveillance was introduced to prevent overtreatment and reduce costs while preserving the option of radical prostatectomy. This study aims to evaluate the cost-effectiveness of active surveillance compared to watchful waiting and radical prostatectomy. METHODS: Markov models were constructed to estimate the life-time cost-effectiveness of active surveillance compared to watchful waiting and radical prostatectomy for low risk localised prostate cancer patients aged 45-70 years, using national datasets in New Zealand and published studies including the SPCG-4 study...
August 8, 2017: BMC Cancer
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