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Even Hovig Fyllingen, Anne Line Stensjøen, Erik Magnus Berntsen, Ole Solheim, Ingerid Reinertsen
To facilitate a more widespread use of volumetric tumor segmentation in clinical studies, there is an urgent need for reliable, user-friendly segmentation software. The aim of this study was therefore to compare three different software packages for semi-automatic brain tumor segmentation of glioblastoma; namely BrainVoyagerTM QX, ITK-Snap and 3D Slicer, and to make data available for future reference. Pre-operative, contrast enhanced T1-weighted 1.5 or 3 Tesla Magnetic Resonance Imaging (MRI) scans were obtained in 20 consecutive patients who underwent surgery for glioblastoma...
2016: PloS One
Steven M Grodsky, Christopher E Moorman, Sarah R Fritts, Steven B Castleberry, T Bently Wigley
Forest regeneration following timber harvest is a principal source of habitat for early-successional birds and characterized by influxes of early-successional vegetation and residual downed woody material. Early-successional birds may use harvest residues for communication, cover, foraging, and nesting. Yet, increased market viability of woody biomass as bioenergy feedstock may intensify harvest residue removal. Our objectives were to: 1) evaluate effects of varying intensities of woody biomass harvest on the early-successional bird community; and (2) document early-successional bird use of harvest residues in regenerating stands...
2016: PloS One
Vanessa Pereira Lima, Vinicius C Iamonti, Marcelo Velloso, Tania Janaudis-Ferreira
PURPOSE: The mechanisms underlying physiological limitations during arm activity in individuals with chronic obstructive pulmonary disease (COPD) are unknown. The objective of this systematic review was to describe cardiorespiratory responses, symptoms, chest wall kinematics, muscle activity, and lung volumes during arm activity in individuals with COPD relative to the responses of healthy controls. METHODS: Original research articles that compared cardiorespiratory responses, symptoms, muscle activity, chest wall kinematics, and lung function during arm activity between individuals with COPD and healthy controls were identified after searches of 5 electronic databases and reference lists of pertinent articles...
November 2016: Journal of Cardiopulmonary Rehabilitation and Prevention
Chuchu Huang, Qing Li, Jiamei Mo, Zheng Wang
We herein describe a novel method of hydride generation (HG) coupled to a newly designed atmospheric pressure solution-cathode glow discharge (SCGD) spectrometric technique for the ultratrace determination of tin, germanium, and selenium. In this novel SCGD process, gas introduction was permitted using a hollow titanium tube as both the anode and sampling port. In these experiments, the analytes were converted into volatile hydrides upon passing through the hydride generator, and were introduced into the near-anode region of the SCGD system, where they were detected directly by atomic emission spectrometry (AES)...
October 25, 2016: Analytical Chemistry
Amanda C Capino, Jamie L Miller, Peter N Johnson
The need for sedation and analgesia and treatment of iatrogenic drug withdrawal is common in critically ill children. First-line therapy typically includes opioid agonists. However, clonidine, a central alpha2 agonist, has been suggested as a treatment option for sedation and analgesia and iatrogenic drug withdrawal. Therefore, we conducted a literature search to identify articles evaluating the use of enteral and transdermal clonidine in critically ill infants and children for sedation and analgesia and treatment of iatrogenic drug withdrawal...
October 25, 2016: Pharmacotherapy
Amanda P De Souza, Lynnicia N Massenburg, Deepak Jaiswal, Siyuan Cheng, Rachel Shekar, Stephen P Long
I. II. III. IV. V. VI. VII. References SUMMARY: As a consequence of an increase in world population, food demand is expected to grow by up to 110% in the next 30-35 yr. The population of sub-Saharan Africa is projected to increase by > 120%. In this region, cassava (Manihot esculenta) is the second most important source of calories and contributes c. 30% of the daily calorie requirements per person. Despite its importance, the average yield of cassava in Africa has not increased significantly since 1961...
October 25, 2016: New Phytologist
Shao-Hua Xie, Jesper Lagergren
The Chinese famine in 1958-1962 was one of the worst in human history, but its potential influence on cancer risks is uncertain. Using cancer incidence data in Shanghai, China, during 1983-2007, we calculated age-specific incidence rates of gastrointestinal cancers in birth cohorts exposed to the Chinese famine in different periods of life and a non-exposed reference cohort. Age-period-cohort regressions estimated the overall relative risks of gastrointestinal cancers in each birth cohort. A total of 212,098 new cases of gastrointestinal cancer were identified during the study period (129,233 males and 82,865 females), among whom 18,146 had esophageal cancer, 71,011 gastric cancer, 55,864 colorectal cancer, 42,751 liver cancer, 9,382 gallbladder cancer, and 14,944 had pancreatic cancer...
October 25, 2016: International Journal of Cancer. Journal International du Cancer
Jillian Reardon, Trana Hussaini, Majid Alsahafi, Vladimir Marquez Azalgara, Siegfried R Erb, Nilufar Partovi, Eric M Yoshida
Aims: To systematically evaluate the literature for evidence to support the use of bile acids in non-cholestatic liver conditions. Methods: Searches were conducted on the databases of Medline (1948-March 31, 2015), Embase (1980-March 31, 2015) and the Cochrane Central Register of Controlled Trials, and on Google and Google Scholar to identify articles describing ursodeoxycholic acid (UDCA) and its derivatives for non-cholestatic hepatic indications. Combinations of the following search terms were used: ursodeoxycholic acid, ursodiol, bile acids and/or salts, non alcoholic fatty liver, non alcoholic steatohepatitis, fatty liver, alcoholic hepatitis, alcohol, liver disease, autoimmune, autoimmune hepatitis, liver transplant, liver graft, transplant rejection, graft rejection, ischemic reperfusion injury, reperfusion injury, hepatitis B, hepatitis C, viral hepatitis, chronic hepatitis, acute hepatitis, transaminases, alanine transaminase, liver enzymes, aspartate aminotransferase, gamma-glutamyl transferase, gamma-glutamyl transpeptidase, bilirubin, alkaline phosphatase...
September 28, 2016: Journal of Clinical and Translational Hepatology
Chien-Yuan Lin, Joseph E Jakes, Bryon S Donohoe, Peter N Ciesielski, Haibing Yang, Sophie-Charlotte Gleber, Stefan Vogt, Shi-You Ding, Wendy A Peer, Angus S Murphy, Maureen C McCann, Michael E Himmel, Melvin P Tucker, Hui Wei
BACKGROUND: Plant lignocellulosic biomass is an abundant, renewable feedstock for the production of biobased fuels and chemicals. Previously, we showed that iron can act as a co-catalyst to improve the deconstruction of lignocellulosic biomass. However, directly adding iron catalysts into biomass prior to pretreatment is diffusion limited, and increases the cost of biorefinery operations. Recently, we developed a new strategy for expressing iron-storage protein ferritin intracellularly to accumulate iron as a catalyst for the downstream deconstruction of lignocellulosic biomass...
2016: Biotechnology for Biofuels
Marvin S Swartz, Sayanti Bhattacharya, Allison G Robertson, Jeffrey W Swanson
OBJECTIVE: Involuntary outpatient commitment (OPC)-also referred to as 'assisted outpatient treatment' or 'community treatment orders'-are civil court orders whereby persons with serious mental illness and repeated hospitalisations are ordered to adhere to community-based treatment. Increasingly, in the United States, OPC is promoted to policy makers as a means to prevent violence committed by persons with mental illness. This article reviews the background and context for promotion of OPC for violence prevention and the empirical evidence for the use of OPC for this goal...
October 24, 2016: Canadian Journal of Psychiatry. Revue Canadienne de Psychiatrie
R Aubry
On February 2, 2016, the French parliament adopted legislation creating new rights for the terminally ill. The text modifies and reinforces the rights of patients to end-of-life care and strengthens the status of surrogate decision makers. Under the new regulations, advance directives become legally binding though not unenforceable. Two types of advance directives are distinguished depending on whether the person is suffering or not from a serious illness when drafting them. The attending physician must abide by the patient's advance directives except in three situations: there is a life-threatening emergency; the directives are manifestly inappropriate; the directives are not compatible with the patient's medical condition...
October 21, 2016: Revue Neurologique
X Wang, T Henzler, J Gawlitza, S Diehl, T Wilhelm, S O Schoenberg, Z Y Jin, H D Xue, A Smakic
PURPOSE: Dynamic volume perfusion CT (dVPCT) provides valuable information on tissue perfusion in patients with hepatocellular carcinoma (HCC) and pancreatic cancer. However, currently dVPCT is often performed in addition to conventional CT acquisitions due to the limited morphologic image quality of dose optimized dVPCT protocols. The aim of this study was to prospectively compare objective and subjective image quality, lesion detectability and radiation dose between mean temporal arterial (mTA) and mean temporal portal venous (mTPV) images calculated from low dose dynamic volume perfusion CT (dVPCT) datasets with linearly blended 120-kVp arterial and portal venous datasets in patients with HCC and pancreatic cancer...
November 2016: European Journal of Radiology
Esther Pompe, Eva M van Rikxoort, Onno M Mets, Jean-Paul Charbonnier, Jan-Martin Kuhnigk, Harry J de Koning, Matthijs Oudkerk, Rozemarijn Vliegenthart, Pieter Zanen, Jan-Willem J Lammers, Bram van Ginneken, Pim A de Jong, Firdaus A A Mohamed Hoesein
OBJECTIVES: Airway wall thickness (AWT) is affected by changes in lung volume. This study evaluated whether correcting AWT on computed tomography (CT) for differences in inspiration level improves measurement agreement, reliability, and power to detect changes over time. METHODS: Participants of the Dutch-Belgian lung cancer screening trial who underwent 3-month repeat CT for an indeterminate pulmonary nodule were included. AWT on CT was calculated by the square root of the wall area at a theoretical airway with an internal perimeter of 10mm (Pi10)...
November 2016: European Journal of Radiology
Guosheng Yang, Hirofumi Tazoe, Masatoshi Yamada
In order to measure trace (236)U and (236)U/(238)U in environmental samples with a high matrix effect, a novel and simple method was developed that makes the digestion and purification procedures compatible with advanced triple-quadrupole inductively coupled plasma-mass spectrometry. A total dissolution of sample with HF + HNO3 + HClO4 was followed by chromatographic separation with a single resin column containing normal type DGA resin (N,N,N',N'-tetra-n-octyldiglycolamide) as the extractant system. The analytical accuracy and precision of (236)U/(238)U ratios, measured as (236)U(16)O(+)/(238)U(16)O(+), were examined by using the reference materials IAEA-135, IAEA-385, IAEA-447, and JSAC 0471...
November 9, 2016: Analytica Chimica Acta
Martin Paparella, Annamaria Colacci, Miriam N Jacobs
An approach for a systematic description of the uncertainties and complexity of the standard animal testing and assessment approach for carcinogenicity is explored by using a draft OECD Guidance document that was originally developed for reporting defined in vitro approaches to testing and assessment (OECD, 2016). The format is suitable for this re-purposing and it appears that the potential multitude of approaches for integrating and interpreting data from standard animal testing may ultimately be conceptually similar to the challenge of integrating relevant in vitro and in silico data...
October 24, 2016: ALTEX
Fernanda Granato, Andre C Felicio, Lilian Yuri Itaya Yamaga, Solange Amorim Nogueira, Taise Vitor
The liver is the organ most commonly affected by colorectal cancer metastasis. Currently, liver resection is the treatment of choice, but in cases where it is not possible, intensity-modulated radiation therapy is an alternative. We report the case of a 57-year-old woman whose colorectal carcinoma metastasized to the liver. She was referred for implantation of fiducial markers for intensity-modulated radiation therapy planning. PET-CT stands out as an additional tool for distinguishing metabolically active tumor tissue from other tissues, ensuring effective introduction of percutaneous fiducial markers, especially in cases where use of conventional imaging techniques is limited...
October 21, 2016: Clinical Nuclear Medicine
Duy Dao, S M A Salehizadeh, Yeon Noj, Jo Woon Chong, Chae Cho, Dave Mcmanus, Chad E Darling, Yitzhak Mendelson, Ki H Chon
Motion and noise artifacts (MNAs) impose limits on the usability of the photoplethysmogram (PPG), particularly in the context of ambulatory monitoring. MNAs can distort PPG, causing erroneous estimation of physiological parameters such as heart rate (HR) and arterial oxygen saturation (SpO2). In this study we present a novel approach, "TifMA," based on using the Time-frequency spectrum of PPG to first detect the MNA-corrupted data and next discard the non-usable part of the corrupted data. The term "non-usable" refers to segments of PPG data from which the HR signal cannot be recovered accurately...
October 21, 2016: IEEE Journal of Biomedical and Health Informatics
Mohammad H Rahbar, Maureen Samms-Vaughan, Manouchehr Hessabi, Aisha S Dickerson, MinJae Lee, Jan Bressler, Sara E Tomechko, Emily K Moreno, Katherine A Loveland, Charlene Coore Desai, Sydonnie Shakespeare-Pellington, Jody-Ann Reece, Renee Morgan, Matthew J Geiger, Michael E O'Keefe, Megan L Grove, Eric Boerwinkle
To date much of the biomonitoring related to exposure to polychlorinated biphenyls (PCBs) and organochlorine (OC) pesticides is from middle to high income countries, including the U.S., Canada and Europe, but such data are lacking for the majority of low to middle income countries. Using data from 64 pregnant mothers who were enrolled in 2011, we aimed to assess the concentrations of the aforementioned toxins in umbilical cord blood serum of 67 Jamaican newborns. For 97 of the 100 PCB congeners and 16 of the 17 OC pesticides, all (100%) concentrations were below their respective limits of detection (LOD)...
October 21, 2016: International Journal of Environmental Research and Public Health
Hsueh-Kuan Lu, Li-Ming Chiang, Yu-Yawn Chen, Chih-Lin Chuang, Kuen-Tsann Chen, Gregory B Dwyer, Ying-Lin Hsu, Chun-Hao Chen, Kuen-Chang Hsieh
This study aimed to establish a hand-to-hand (HH) model for bioelectrical impedance analysis (BIA) fat free mass (FFM) estimation by comparing with a standing position hand-to-foot (HF) BIA model and dual energy X-ray absorptiometry (DXA); we also verified the reliability of the newly developed model. A total of 704 healthy Chinese individuals (403 men and 301 women) participated. FFM (FFMDXA) reference variables were measured using DXA and segmental BIA. Further, regression analysis, Bland-Altman plots, and cross-validation (2/3 participants as the modeling group, 1/3 as the validation group; three turns were repeated for validation grouping) were conducted to compare tests of agreement with FFMDXA reference variables...
October 21, 2016: Nutrients
Ashley Page, David Perry, Philip Young, Daniel A Mitchell, Bruno G Frenguelli, Patrick R Unwin
A vast range of interfacial systems exhibit charge heterogeneities on the nanoscale. These differences in local surface charge density are challenging to visualize, but recent work has shown the scanning ion conductance microscope (SICM) to be a very promising tool to spatially resolve and map surface charge and topography via a hopping potential sweep technique with a single nanopipette probe, with harmonic modulation of a bias applied between quasi-reference counter electrodes in the nanopipette and bulk solution, coupled with lock-in detection...
October 24, 2016: Analytical Chemistry
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