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https://www.readbyqxmd.com/read/28215054/semiparametric-modeling-and-analysis-of-longitudinal-method-comparison-data
#1
Lasitha N Rathnayake, Pankaj K Choudhary
Studies comparing two or more methods of measuring a continuous variable are routinely conducted in biomedical disciplines with the primary goal of measuring agreement between the methods. Often, the data are collected by following a cohort of subjects over a period of time. This gives rise to longitudinal method comparison data where there is one observation trajectory for each method on every subject. It is not required that observations from all methods be available at each observation time. The multiple trajectories on the same subjects are dependent...
February 19, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28215040/who-should-receive-a-transplant-for-acute-lymphoblastic-leukaemia
#2
REVIEW
Rishi Dhawan, David I Marks
Allogeneic haematopoietic cell transplantation continues to be an important curative therapy for acute lymphoblastic leukaemia (ALL). Traditionally accepted indications for allografting adult ALL patients need reevaluation in light of outcomes with paediatric-like intensive regimens. Minimal residual disease status and oncogenetics can be used for restratification of standard risk patients. A greater body of data on haematopoietic cell transplantation (HCT) outcomes from haploidentical and cord blood donor sources has been generated in recent years...
February 18, 2017: Current Hematologic Malignancy Reports
https://www.readbyqxmd.com/read/28215039/impact-of-surgical-experience-on-management-and-outcome-of-pancreatic-surgery-performed-in-high-and-low-volume-centers
#3
Marco Stella, Massimiliano Bissolati, Daniele Gentile, Alessandro Arriciati
Pancreaticoduodenectomy (PD) is one of the procedures in general surgery with the highest rate of life-threatening complications. The positive impact of the volume-outcome ratio on outcomes and mortality in pancreatic surgery (PS) has led to policy-level efforts toward centralization of care for PS that is currently under evaluation by some Regional Health Services. The role of the surgeon's experience and training is still under debate. The aim of this paper is to compare the outcomes of PS by the same surgeon in a high volume (HV) and in a low volume (LV) hospital to assess whether a specific training in PS could outdo the benefits of hospital volume...
February 18, 2017: Updates in Surgery
https://www.readbyqxmd.com/read/28215001/pediatric-radiology-continuing-medical-education-activity
#4
(no author information available yet)
No abstract text is available yet for this article.
March 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28214994/cancelled-primary-care-appointments-a-prospective-cohort-study-of-diabetic-patients
#5
Sara McComb, Zhiyi Tian, Laura Sands, Ayten Turkcan, Lingsong Zhang, Shree Frazier, Mark Lawley
Patients scheduled for primary care appointments often cancel or no show. For diabetic patients, nonattendance can affect continuity of care and result in higher emergency department (ED) and hospital use. Nonattendance also impacts appointment scheduling, patient access, and clinic work load. While no show has received significant attention, little research has addressed the prevalence and impact of appointment cancellation. Data on 46,710 appointments for 7586 adult diabetic patients was used to conduct a prospective cohort study examining primary care appointment behavior...
April 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28214992/data-mining-in-hiv-aids-surveillance-system-application-to-portuguese-data
#6
Alexandra Oliveira, Brígida Mónica Faria, A Rita Gaio, Luís Paulo Reis
The Human Immunodeficiency Virus (HIV) is an infectious agent that attacks the immune system cells. Without a strong immune system, the body becomes very susceptible to serious life threatening opportunistic diseases. In spite of the great progresses on medication and prevention over the last years, HIV infection continues to be a major global public health issue, having claimed more than 36 million lives over the last 35 years since the recognition of the disease. Monitoring, through registries, of HIV-AIDS cases is vital to assess general health care needs and to support long-term health-policy control planning...
April 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28214930/investigation-of-optical-neuro-monitoring-technique-for-detection-of-maintenance-and-emergence-states-during-general-anesthesia
#7
Gabriela Hernandez-Meza, Meltem Izzetoglu, Mary Osbakken, Michael Green, Hawa Abubakar, Kurtulus Izzetoglu
The American Society of Anesthesiologist recommends peripheral physiological monitoring during general anesthesia, which offers no information regarding the effects of anesthetics on the brain. Since no "gold standard" method exists for this evaluation, such a technique is needed to ensure patient comfort, procedure quality and safety. In this study we investigated functional near infrared spectroscopy (fNIRS) as possible monitor of anesthetic effects on the prefrontal cortex. Anesthetic drugs, such as sevoflurane, suppress the cerebral metabolism and alter the cerebral blood flow...
February 18, 2017: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/28214903/risks-and-benefits-of-multimodal-esophageal-cancer-treatments-a-meta-analysis
#8
Lei Sun, Fen Zhao, Yan Zeng, Cheng Yi
BACKGROUND Esophageal cancer has traditionally been associated with very poor outcomes. A number of therapies are available for the treatment and palliation of esophageal cancer, but little systematic evidence compares the efficacy of different treatment strategies. This meta-analysis aimed to investigate whether treatments in addition to radiotherapy could provide better efficacy and safety. MATERIAL AND METHODS We identified a total of 12 eligible studies with 18 study arms by searching PubMed, the Cochrane Library, EMBASE, and Clinical Trials...
February 19, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28214894/mechanical-loading-improves-tendon-bone-healing-in-a-rabbit-anterior-cruciate-ligament-reconstruction-model-by-promoting-proliferation-and-matrix-formation-of-mesenchymal-stem-cells-and-tendon-cells
#9
Fanglong Song, Dawei Jiang, Tianchen Wang, Yi Wang, Fengmei Chen, Guoxing Xu, Yifan Kang, Yinquan Zhang
BACKGROUND/AIMS: This study investigated the effect of mechanical stress on tendon-bone healing in a rabbit anterior cruciate ligament (ACL) reconstruction model as well as cell proliferation and matrix formation in co-culture of bone-marrow mesenchymal stem cells (BMSCs) and tendon cells (TCs). METHODS: The effect of continuous passive motion (CPM) therapy on tendon-bone healing in a rabbit ACL reconstruction model was evaluated by histological analysis, biomechanical testing and gene expressions at the tendon-bone interface...
February 16, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28214750/propagation-of-thickness-shear-waves-in-a-periodically-corrugated-quartz-crystal-plate-and-its-application-exploration-in-acoustic-wave-filters
#10
Peng Li, Li Cheng
The propagation of thickness shear waves in a periodically corrugated quartz crystal plate is investigated in the present paper using a power series expansion technique. In the proposed simulation model, an equivalent continuity of shear stress moment is introduced as an approximation to handle sectional interfaces with abrupt thickness changes. The Bloch theory is applied to simulate the band structures for three different thickness variation patterns. It is shown that the power series expansion method exhibits good convergence and accuracy, in agreement with results by finite element method (FEM)...
February 7, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28214690/safety-and-efficacy-of-a-polyherbal-formulation-for-the-management-of-dyslipidemia-and-hyperglycemia-in-patients-with-advanced-stage-of-type-2-diabetes
#11
Mahdi Zarvandi, Hassan Rakhshandeh, Mohammad Abazari, Reza Shafiee-Nick, Ahmad Ghorbani
The present clinical trial was designed to evaluate the safety and efficacy of a polyherbal formulation (PHF) consisted of Allium sativum, Aloe vera, Nigella sativa, Plantago psyllium, Silybum marianum and Trigonella foenum-graecum for controlling dyslipidemia and hyperglycemia in patients with advanced-stage of type-2 diabetes. An open-label phase I trial was carried out on 30 patients who had hyperlipidemia and hyperglycemia before the beginning of the trial in spite of receiving statins and oral hypoglycemic drugs...
February 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28214681/a-high-temperature-passaging-attenuated-pseudorabies-vaccine-protects-piglets-completely-against-emerging-prv-variant
#12
Chao Liang, Wu Tong, Hao Zheng, Fei Liu, Jiqiang Wu, Guoxin Li, En-Min Zhou, Guangzhi Tong
Emerging variant of pseudorabies virus (PRV) have evaded the antiviral immunity of commercially available PRV vaccine and have led to PRV outbreaks in Chinese pig farms. Here, we attenuated a PRV variant strain by serial passages in vitro and evaluate the protective efficacy of the attenuated strain as a vaccine candidate. The virulent PRV variant strain JS-2012 was continuously passaged in Vero cells at 40°C and attenuated rapidly. After 90 passages in Vero cells, the passaged virus lost its ability to cause death in 2-week-old piglets...
February 13, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28214647/fate-of-antimicrobials-in-duckweed-lemna-minor-wastewater-treatment-systems
#13
Evangelia I Iatrou, Georgia Gatidou, Dimitrios Damalas, Nikolaos S Thomaidis, Athanasios S Stasinakis
The fate of four antimicrobials (cefadroxil, CFD; metronidazole, METRO; trimethoprim, TRI; sulfamethoxazole, SMX) was studied in Lemna minor systems and the role of different mechanisms on their removal was evaluated. All micropollutants were significantly removed in batch experiments with active Lemna minor; the highest removal was observed for CFD (100% in 14 d), followed by METRO (96%), SMX (73%) and TRI (59%) during 24 d of the experiment. Calculation of kinetic constants for hydrolysis, photodegradation, sorption to biomass and plant uptake revealed significant differences depending on the compound and the studied mechanism...
February 13, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28214619/transition-from-non-fickian-to-fickian-longitudinal-transport-through-3-d-rough-fractures-scale-in-sensitivity-and-roughness-dependence
#14
Lichun Wang, M Bayani Cardenas
Understanding transport in rough fractures from non-Fickian to Fickian regimes and the prediction of non-Fickian transport is critical for the development of new transport theories and many practical applications. Through computational experiments that fall within the macrodispersion regime, we first simulated and analyzed solute transport through synthetic rough fractures with stationary geometrical properties (i.e., fracture roughness σb/〈b〉 and correlation length λ, where b refers to aperture with its standard deviation σb and arithmetic mean 〈b〉) across increasing fracture longitudinal transport domain length L, with L/λ ranging from 2...
February 4, 2017: Journal of Contaminant Hydrology
https://www.readbyqxmd.com/read/28214548/global-stability-of-an-%C3%AE-ketoglutarate-dependent-dioxygenase-taud-and-its-related-complexes
#15
Kate L Henderson, Mingjie Li, Salette Martinez, Edwin A Lewis, Robert P Hausinger, Joseph P Emerson
BACKGROUND: TauD is a nonheme iron(II) and α-ketoglutarate (αKG) dependent dioxygenase, and a member of a broader family of enzymes that oxidatively decarboxylate αKG to succinate and carbon dioxide thereby activating O2 to perform a range of oxidation reactions. However before O2 activation can occur, these enzymes bind both substrate and cofactor in an effective manner. Here the thermodynamics associated with substrate and cofactor binding to FeTauD are explored. METHODS: Thermal denaturation of TauD and its enzyme-taurine, enzyme-αKG, and enzyme-taurine-αKG complexes are explored using circular dichroism (CD) spectroscopy and differential scanning calorimetry (DSC)...
February 15, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28214545/potential-of-amphiphilic-graft-copolymer-%C3%AE-tocopherol-succinate-g-carboxymethyl-chitosan-in-modulating-the-permeability-and-anticancer-efficacy-of-tamoxifen
#16
Sunil K Jena, Sanjaya K Samal, Shamandeep Kaur, Mahesh Chand, Abhay T Sangamwar
Recent studies showed an enhanced oral bioavailability of tamoxifen (TMX) by hydrophobically modified α-tocopherol succinate-g-carboxymethyl chitosan (Cmc-TS) micelles. As a continued effort, here we evaluated TMX-loaded polymeric micelles (TMX-PMs) for its enhanced permeability with increased anticancer efficacy and decreased hepatotoxicity. We employed co-solvent evaporation technique to encapsulate TMX into Cmc-TS. Apparent permeability assay of TMX-PMs was performed on Caco-2 cell line. The absorptive transport of TMX increased significantly about 3...
February 15, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28214491/relationship-between-patient-reported-symptoms-limitations-in-daily-activities-and-psychological-impact-in-varicose-veins
#17
Rajiv Mallick, Brajesh Kumar Lal, Claire Daugherty
OBJECTIVE: The objective of this study was to evaluate the relationship between patient-reported symptoms, functional limitations, and psychological impact of varicose veins (VVs) vs pathophysiologic mechanism, incorporating demographic and behavioral factors. METHODS: We conducted a pooled analysis from two clinical studies (Efficacy and Safety Study of Polidocanol Injectable Foam for the Treatment of Saphenofemoral Junction Incompetence [VANISH-1] and Polidocanol Endovenous Microfoam Versus Vehicle for the Treatment of Saphenofemoral Junction Incompetence [VANISH-2]) in patients with VVs (superficial venous reflux only)...
March 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28214475/hunter-and-new-england-healthpathways-a-4-year-journey-of-integrated-care
#18
Jane S Gray, Judith R Swan, Margaret A Lynch, Tracey M Tay, Marika-Jane Mackenzie, John H Wiggers, Karen A Harrison, Robert C McDonald, Ian P O'Dea, Louise M Harrigan, Sandra M Fitzgerald
Objective This paper describes the 4-year journey of Hunter and New England HealthPathways - a password-protected web-based portal designed to provide localised evidence-informed clinical and referral information to support general practice at the point of care.Methods A process evaluation was conducted in 2013, with a case study comparison performed in 2014 to assess impact of HealthPathways on patient referral and access to specialist care, followed by a review in 2016 of utilisation of the online portal to assess whether healthcare providers continued to access HealthPathways...
February 20, 2017: Australian Health Review: a Publication of the Australian Hospital Association
https://www.readbyqxmd.com/read/28214447/influence-of-pressures-up-to-50bar-on-two-stage-anaerobic-digestion
#19
Wolfgang Merkle, Katharina Baer, Jonas Lindner, Simon Zielonka, Felix Ortloff, Frank Graf, Thomas Kolb, Thomas Jungbluth, Andreas Lemmer
The concept of pressurized two-stage anaerobic digestion integrates biogas production, purification and pressure boosting within one process. The produced methane-rich biogas can be fed into gas grids with considerably less purification effort. To investigate biogas production under high pressures up to 50bar, a lab scale two-stage anaerobic digestion system was constructed including one continuously operated pressurized methane reactor. This investigation examined the effects of different operating pressures in methane reactor (10, 25, 50bar) on biogas quantity and quality, pH value and process stability...
February 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28214439/different-cultivation-methods-to-acclimatise-ammonia-tolerant-methanogenic-consortia
#20
Hailin Tian, Ioannis A Fotidis, Enrico Mancini, Irini Angelidaki
Bioaugmentation with ammonia tolerant-methanogenic consortia was proposed as a solution to overcome ammonia inhibition during anaerobic digestion process recently. However, appropriate technology to generate ammonia tolerant methanogenic consortia is still lacking. In this study, three basic reactors (i.e. batch, fed-batch and continuous stirred-tank reactors (CSTR)) operated at mesophilic (37°C) and thermophilic (55°C) conditions were assessed, based on methane production efficiency, incubation time, TAN/FAN (total ammonium nitrogen/free ammonia nitrogen) levels and maximum methanogenic activity...
February 11, 2017: Bioresource Technology
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