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https://www.readbyqxmd.com/read/28806692/microplastic-pollution-identified-in-deep-sea-water-and-ingested-by-benthic-invertebrates-in-the-rockall-trough-north-atlantic-ocean
#1
Winnie Courtene-Jones, Brian Quinn, Stefan F Gary, Andrew O M Mogg, Bhavani E Narayanaswamy
Microplastics are widespread in the natural environment and present numerous ecological threats. While the ultimate fate of marine microplastics are not well known, it is hypothesized that the deep sea is the final sink for this anthropogenic contaminant. This study provides a quantification and characterisation of microplastic pollution ingested by benthic macroinvertebrates with different feeding modes (Ophiomusium lymani, Hymenaster pellucidus and Colus jeffreysianus) and in adjacent deep water > 2200 m, in the Rockall Trough, Northeast Atlantic Ocean...
August 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28806681/human-biomonitoring-of-polycyclic-aromatic-hydrocarbonsand-metals-in-the-general-population-residing-near-the-municipal-solid-waste-incinerator-of-modena-italy
#2
Maria Giulia Gatti, Petra Bechtold, Laura Campo, Giovanna Barbieri, Giulia Quattrini, Andrea Ranzi, Sabrina Sucato, Luca Olgiati, Elisa Polledri, Michael Romolo, Laura Iacuzio, Giuliano Carrozzi, Paolo Lauriola, Carlo A Goldoni, Silvia Fustinoni
BACKGROUND AND OBJECTIVES: A cross-sectional biomonitoring study was carried out to investigate exposure to incinerator emission in relation to the body burden of selected biomarkers in the population living around the plant. METHODS: Approximately 500 people, aged 18-69 yrs, living within 4 km from the incinerator were randomly selected form the population register. Exposure was measured through fall-out maps of particulate matter (PM), used as tracer for incinerator emissions...
August 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/28805904/higher-dominance-position-does-not-result-in-higher-reproductive-success-in-female-beef-cattle
#3
R Šárová, M Špinka, F Ceacero
The aim of this study was to investigate whether beef cows that achieve higher dominance status than their age-mates have prolonged reproductive life, increased number of offspring born and weaned, and/or heavier BW of the offspring. We also assessed whether maternal dominance rank affects the offspring sex ratio. We recorded data on 309 potential deliveries of female beef cows with known dominance status in a seasonally pastured herd over a 14-yr period and linked them with yearly records of dominance status of the cows assessed around feeding...
August 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28805017/estimating-the-between-farm-transmission-rates-for-highly-pathogenic-avian-influenza-subtype-h5n1-epidemics-in-bangladesh-between-2007-and-2013
#4
A Ssematimba, I Okike, G M Ahmed, M Yamage, G J Boender, T J Hagenaars, B Bett
Highly Pathogenic Avian Influenza (HPAI) is classified by the World Organization for Animal Health as one of the notifiable diseases. Its occurrence is associated with severe socio-economic impacts and is also zoonotic. Bangladesh HPAI epidemic data for the period between 2007 and 2013 were obtained and split into epidemic waves based on the time lag between outbreaks. By assuming the number of newly infected farms to be binomially distributed, we fit a Generalized Linear Model to the data to estimate between-farm transmission rates (β)...
August 14, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28803850/association-of-exposure-to-manganese-and-iron-with-striatal-and-thalamic-gaba-and-other-neurometabolites-neuroimaging-results-from-the-weldox-ii-study
#5
Swaantje Casjens, Urike Dydak, Shalmali Dharmadhikari, Anne Lotz, Martin Lehnert, Clara Quetscher, Christoph Stewig, Benjamin Glaubitz, Tobias Schmidt-Wilcke, David Edmondson, Chien-Lin Yeh, Tobias Weiss, Christoph van Thriel, Lennard Herrmann, Siegfried Muhlack, Dirk Woitalla, Michael Aschner, Thomas Brüning, Beate Pesch
OBJECTIVE: Magnetic resonance spectroscopy (MRS) is a non-invasive method to quantify neurometabolite concentrations in the brain. Within the framework of the WELDOX II study, we investigated the association of exposure to manganese (Mn) and iron (Fe) with γ-aminobutyric acid (GABA) and other neurometabolites in the striatum and thalamus of 154 men. MATERIAL AND METHODS: GABA-edited and short echo-time MRS at 3T was used to assess brain levels of GABA, glutamate, total creatine (tCr) and other neurometabolites...
August 10, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28803585/performance-and-financial-consequences-of-stillbirth-in-holstein-dairy-cattle
#6
A Mahnani, A Sadeghi-Sefidmazgi, H Keshavarzi
Stillbirth is an economically important trait on dairy farms. Knowledge of the consequences of, and the economic losses associated with stillbirth can help the producer when making management decisions. The objectives of this study were to determine the effects of stillbirth on productive and reproductive performance as well as financial losses due to stillbirth incidence in Iranian Holstein dairy farms. Economic and performance data were collected from nine Holstein dairy farms in Isfahan and Khorasan provinces of Iran from March 2008 to December 2013...
August 14, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28803203/use-of-bias-correction-techniques-to-improve-seasonal-forecasts-for-reservoirs-a-case-study-in-northwestern-mediterranean
#7
Raül Marcos, Ma Carmen Llasat, Pere Quintana-Seguí, Marco Turco
In this paper, we have compared different bias correction methodologies to assess whether they could be advantageous for improving the performance of a seasonal prediction model for volume anomalies in the Boadella reservoir (northwestern Mediterranean). The bias correction adjustments have been applied on precipitation and temperature from the European Centre for Middle-range Weather Forecasting System 4 (S4). We have used three bias correction strategies: two linear (mean bias correction, BC, and linear regression, LR) and one non-linear (Model Output Statistics analogs, MOS-analog)...
August 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28802206/perfluoroalkyl-substance-exposure-and-urine-cc16-levels-among-asthmatics-a-case-control-study-of-children
#8
Yang Zhou, Wen-Wen Bao, Zhengmin Min Qian, Sarah Dee Geiger, Katelyn L Parrish, Bo-Yi Yang, Yungling Leo Lee, Guang-Hui Dong
BACKGROUND: Studies have reported an association between serum perfluoroalkyl substances (PFASs) and asthma. However, few studies have examined the possible associations between PFASs and the 16-kDa club cell secretory protein (Clara) (CC16) level, a prominent biomarker of asthma, among adolescents. METHODS: We recruited a total of 231 asthmatic children and 225 non-asthmatic controls in the Genetic and Biomarkers study for Childhood Asthma (GBCA) in northern Taiwan from 2009 to 2010...
August 9, 2017: Environmental Research
https://www.readbyqxmd.com/read/28801951/modeling-ion-recombination-in-liquid-ionization-chambers-improvement-and-analysis-of-the-two-dose-rate-method
#9
Jonas Andersson, Heikki Tölli
PURPOSE: The use of liquid ionization chambers can provide useful information to endeavors with radiation dosimetry for highly modulated beams. Liquid ionization chambers may be particularly suitable for computed tomography applications where conventional ionization chambers do not present a high enough sensitivity for the spatial resolution required to characterize common X-ray beams. Due to the sensitivity, which leads to high charge densities, liquid ionization chambers can suffer from large recombination losses leading to degradation in signal to dose rate linearity...
August 12, 2017: Medical Physics
https://www.readbyqxmd.com/read/28801604/recombineering-using-recet-in-corynebacterium-glutamicum-atcc14067-via-a-self-excisable-cassette
#10
Yuanyuan Huang, Lu Li, Shan Xie, Nannan Zhao, Shuangyan Han, Ying Lin, Suiping Zheng
Gene manipulation is essential for metabolic engineering and synthetic biology, but the current general gene manipulation methods are not applicable to the non-model strain Corynebacterium glutamicum (C. glutamicum) ATCC14067, which is used for amino acid production. Here, we report an effective and sequential deletion method for C. glutamicum ATCC14067 using the exonuclease-recombinase pair RecE + RecT (RecET) for recombineering via a designed self-excisable linear double-strand DNA (dsDNA) cassette, which contains the Cre/loxP system, to accomplish markerless deletion...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28801538/comparison-of-acute-thrombogenicity-for-metallic-and-polymeric-bioabsorbable-scaffolds-magmaris-versus-absorb-in-a-porcine-arteriovenous-shunt-model
#11
Ron Waksman, Michael J Lipinski, Eduardo Acampado, Qi Cheng, Lila Adams, Sho Torii, Jiaxiang Gai, Rebecca Torguson, David M Hellinga, Peter C Westman, Michael Joner, Philine Zumstein, Frank D Kolodgie, Renu Virmani
BACKGROUND: A comparison in acute thrombogenicity between the Magmaris sirolimus-eluting bioabsorbable magnesium scaffold and the Absorb bioresorbable vascular scaffold has not been performed. This study assessed acute thrombogenicity of Magmaris compared with Absorb and the Orsiro hybrid drug-eluting stent in a porcine arteriovenous shunt model. METHODS AND RESULTS: An ex vivo porcine carotid jugular arteriovenous shunt was established and connected to SYLGARD tubing containing the Magmaris, Absorb, and Orsiro scaffolds/stents and allowed to run in the shunt for a maximum of 1 hour...
August 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28800230/mechanistic-investigations-of-the-pd-0-catalyzed-enantioselective-1-1-diarylation-of-benzyl-acrylates
#12
Manuel Orlandi, Margaret J Hilton, Eiji Yamamoto, F Dean Toste, Matthew S Sigman
A mechanistic study of the Pd-catalyzed enantioselective 1,1-diarylation of benzyl acrylates that is facilitated by a Chiral Anion Phase Transfer (CAPT) process is presented. Kinetic analysis, labeling, competition and non-linear effect experi-ments confirm the hypothesized general mechanism and reveal the role of the phosphate counterion in the CAPT catal-ysis. The phosphate was found to be involved in the phase transfer step and in the stereoinduction process as expected, but also in the unproductive reaction that provides the traditional Heck byproduct...
August 11, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28799660/when-does-poor-governance-presage-biosecurity-risk
#13
Stephen E Lane, Anthony D Arthur, Christina Aston, Sam Zhao, Andrew P Robinson
Border inspection, and the challenge of deciding which of the tens of millions of consignments that arrive should be inspected, is a perennial problem for regulatory authorities. The objective of these inspections is to minimize the risk of contraband entering the country. As an example, for regulatory authorities in charge of biosecurity material, consignments of goods are classified before arrival according to their economic tariff number. This classification, perhaps along with other information, is used as a screening step to determine whether further biosecurity intervention, such as inspection, is necessary...
August 11, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28799360/system-size-effects-in-ionic-fluids-under-periodic-boundary-conditions
#14
Jeff P Thompson, Isaac C Sanchez
We investigate the system-size dependence of the thermodynamic properties of ionic fluids under periodic boundary conditions. Following an approach previously developed in the context of quantum Monte Carlo simulations of many-electron systems, we show that the leading-order finite-size artifact in the Coulomb energy per particle of a classical fluid of N structureless ions at given density and temperature is simply -kBT(2N)(-1). Analytical approximations for the periodicity-induced size dependence of the excess thermodynamic properties of the fluid in the weak-coupling regime are obtained within the linearized Debye-Hückel theory...
December 7, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28798985/nanostring-based-breast-cancer-risk-prediction-for-women-with-sclerosing-adenosis
#15
Stacey J Winham, Christine Mehner, Ethan P Heinzen, Brendan T Broderick, Melody Stallings-Mann, Aziza Nassar, Robert A Vierkant, Tanya L Hoskin, Ryan D Frank, Chen Wang, Lori A Denison, Celine M Vachon, Marlene H Frost, Lynn C Hartmann, E Aubrey Thompson, Mark E Sherman, Daniel W Visscher, Amy C Degnim, Derek C Radisky
PURPOSE: Sclerosing adenosis (SA), found in ¼ of benign breast disease (BBD) biopsies, is a histological feature characterized by lobulocentric proliferation of acini and stromal fibrosis and confers a two-fold increase in breast cancer risk compared to women in the general population. We evaluated a NanoString-based gene expression assay to model breast cancer risk using RNA derived from formalin-fixed, paraffin-embedded (FFPE) biopsies with SA. METHODS: The study group consisted of 151 women diagnosed with SA between 1967 and 2001 within the Mayo BBD cohort, of which 37 subsequently developed cancer within 10 years (cases) and 114 did not (controls)...
August 10, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28798829/does-surgical-delay-for-radical-prostatectomy-affect-patient-pathological-outcome-a-retrospective-analysis-from-a-canadian-cohort
#16
Marc Zanaty, Mansour Alnazari, Kelsey Lawson, Mounsif Azizi, Emad Rajih, Abdullah Alenizi, Pierre-Alain Hueber, Malek Meskawi, Cedric Lebacle, Thierry Lebeau, Serge Benayoun, Pierre I Karakiewicz, Assaad El-Hakim, Kevin C Zorn
INTRODUCTION: We sought to assess the impact of surgical wait time (SWT) to robot-assisted radical prostatectomy (RARP) on final pathological outcome. METHODS: A retrospective review of RARP patient records operated between 2006 and 2015 was conducted. SWT was defined as period from prostate biopsy to surgery. Primary outcome was the impact on postoperative Cancer of the Prostate Risk Assessment (CAPRA-S) score. Patients were stratified according to D'Amico risk categories...
August 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28797406/ct-detected-growth-of-coronary-artery%C3%A2-calcification-in-asymptomatic-middle-aged-subjects-and-association-with-15-biomarkers
#17
Søren Zöga Diederichsen, Mette Hjortdal Grønhøj, Hans Mickley, Oke Gerke, Flemming Hald Steffensen, Jess Lambrechtsen, Niels Peter Rønnow Sand, Lars Melholt Rasmussen, Michael Hecht Olsen, Axel Diederichsen
OBJECTIVES: This study sought to determine the incidence and progression of coronary artery calcification (CAC) in asymptomatic middle-aged subjects and to evaluate the value of a broad panel of biomarkers in the prediction of CAC growth. BACKGROUND: CAC continues to be a major risk factor, but the value of biochemical markers in predicting CAC incidence and progression remains unresolved. METHODS: At baseline, 1,227 men and women underwent traditional risk assessment and a computed tomography (CT) scan to determine the CAC score...
August 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28796953/advanced-statistical-analyses-to-reduce-inconsistency-of-bond-strength-data
#18
T Minamino, A Mine, A Shintani, M Higashi, A Kawaguchi-Uemura, T Kabetani, R Hagino, D Imai, Y Tajiri, M Matsumoto, H Yatani
This study was designed to clarify the interrelationship of factors that affect the value of microtensile bond strength (µTBS), focusing on nondestructive testing by which information of the specimens can be stored and quantified. µTBS test specimens were prepared from 10 noncarious human molars. Six factors of µTBS test specimens were evaluated: presence of voids at the interface, X-ray absorption coefficient of resin, X-ray absorption coefficient of dentin, length of dentin part, size of adhesion area, and individual differences of teeth...
August 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28796770/what-is-the-relationship-between-visual-impairment-and-cognitive-function-in-octogenarians
#19
Denise S de Kok, Ruth O Teh, Avinesh Pillai, Martin J Connolly, Tim J Wilkinson, Simon A Moyes, Robert Jacobs, Marama Muru-Lanning, Anna Rolleston, Dieuwke Schiphof, Ngaire Kerse
AIMS: To examine direct and indirect pathways between visual and cognitive function in advanced age. METHODS: We analysed cross-sectional baseline data from Life and Living in Advanced Age: A Cohort Study in New Zealand, which recruited equal sample sizes of Māori (n=421) and non-Māori (n=516) octogenarians. The Modified Mini-Mental State Examination assessed cognitive function. Vision was assessed with self-report and measured distance visual acuity. Associations between visual and cognitive function were explored using general linear models and structural equation modelling...
August 11, 2017: New Zealand Medical Journal
https://www.readbyqxmd.com/read/28796684/maternal-and-infant-outcomes-after-human-papillomavirus-vaccination-in-the-periconceptional-period-or-during-pregnancy
#20
Heather S Lipkind, Gabriela Vazquez-Benitez, James D Nordin, Paul A Romitti, Allison L Naleway, Nicola P Klein, Rulin C Hechter, Michael L Jackson, Simon J Hambidge, Grace M Lee, Lakshmi Sukumaran, Elyse O Kharbanda
OBJECTIVE: To evaluate whether quadrivalent human papillomavirus (HPV) vaccine administered during the periconceptional period or during pregnancy was associated with increased risks for adverse obstetric events, adverse birth outcomes, or selected major structural birth defects. METHODS: We conducted a retrospective, observational cohort study using administrative and health care data from the Vaccine Safety Datalink. Insured women 13-27 years old with singleton pregnancies and a live birth from January 1, 2007, through September 1, 2013, who received quadrivalent HPV vaccine during the periconceptional period (2 weeks before to 2 weeks after their last menstrual period), during pregnancy, or during both periods combined were compared with women who had a live birth during the same time period and received quadrivalent HPV vaccine 4-18 months before their last menstrual period...
August 4, 2017: Obstetrics and Gynecology
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