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https://www.readbyqxmd.com/read/29778067/succession-of-bacterial-and-fungal-communities-within-biofilms-of-a-chlorinated-drinking-water-distribution-system
#1
I Douterelo, K E Fish, J B Boxall
Understanding the temporal dynamics of multi-species biofilms in Drinking Water Distribution Systems (DWDS) is essential to ensure safe, high quality water reaches consumers after it passes through these high surface area reactors. This research studied the succession characteristics of fungal and bacterial communities under controlled environmental conditions fully representative of operational DWDS. Microbial communities were observed to increase in complexity after one month of biofilm development but they did not reach stability after three months...
May 3, 2018: Water Research
https://www.readbyqxmd.com/read/29778024/simultaneous-glucose-production-from-cellulose-and-fouling-reduction-using-a-magnetic-responsive-membrane-reactor-with-superparamagnetic-nanoparticles-carrying-cellulolytic-enzymes
#2
Abaynesh Yihdego Gebreyohannes, Madhav Dharmjeet, Tom Swusten, Matthias Mertens, Joran Verspreet, Thierry Verbiest, Christophe M Courtin, Ivo F J Vankelecom
This work aimed at investigating simultaneous hydrolysis of cellulose and in-situ foulant degradation in a cellulose fed superparamagnetic biocatalytic membrane reactor (BMRSP ). In this reactor, a dynamic layer of superparamagnetic bionanocomposites with immobilized cellulolytic enzymes were reversibly immobilized on superparamagnetic polymeric membrane using an external magnetic field. The formation of a dynamic layer of bionanocomposites on the membrane helped to prevent direct membrane-foulant interaction...
May 2, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29777992/18-years-of-continuous-observation-of-tritium-and-atmospheric-precipitations-in-ramnicu-valcea-romania-a-time-series-analysis
#3
Octavian G Duliu, Carmen Varlam, Muataz Dheyaa Shnawaw
To get more information on the origin of tritium and to evidence any possible presence of anthropogenic sources, between January 1999 and December 2016, the precipitation level and tritium concentration were monthly recorded and investigated by the Cryogenic Institute of Ramnicu Valcea, Romania. Compared with similar data covering a radius of about 1200 km westward, the measurements gave similar results concerning the time evolution of tritium content and precipitation level for the entire time interval excepting the period between 2009 and 2011 when the tritium concentrations showed a slight increase, most probable due to the activity of neighboring experimental pilot plant for tritium and deuterium separation...
May 16, 2018: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29777963/red-wolf-canis-rufus-sperm-quality-and-quantity-is-affected-by-semen-collection-method-extender-components-and-post-thaw-holding-temperature
#4
Ashley D Franklin, William T Waddell, Karen L Goodrowe
Cryopreserving genetic resources is becoming increasingly important for species management. In the zoo-based red wolf (Canis rufus) population, inbreeding continues to increase in the absence of new founders. Through banking sperm, we preserve genetic diversity and create the ability to decrease inbreeding accumulation in the future. The quality and quantity of banked sperm can be affected by cryopreservation media and semen collection methods. This study's objectives were to further optimize semen extender used for red wolf sperm cryopreservation, investigate effects of post-thaw holding temperature, and to determine if urethral catheterization is an effective method for semen collection in this species...
May 16, 2018: Theriogenology
https://www.readbyqxmd.com/read/29777951/experimental-referred-pain-extends-towards-previously-injured-location-an-explorative-study
#5
Thorvaldur Skuli Palsson, Shellie A Boudreau, Hans Jørgen Krebs, Thomas Graven-Nielsen
Facilitated pain mechanisms have been demonstrated in musculoskeletal pain but it is unclear whether a recent painful injury leaves the pain system sensitized. Pain characteristics were assessed in individuals who recently recovered from ankle pain (recovered pain group; n=25) and sex-matched controls (n=25) in response to tonic-pressure pain and saline-induced pain applied at the shin muscle. Pain intensity and pain referral patterns were recorded bilaterally after the painful muscle stimulus. Pressure pain thresholds (PPTs) were measured at the lower legs and shoulder...
May 16, 2018: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/29777921/comparison-of-heavy-metals-parasites-and-histopathology-in-sculpins-myoxocephalus-spp-from-two-sites-at-a-lead-zinc-mine-in-north-east-greenland
#6
Rasmus Dyrmose Nørregaard, Mai Dang, Lis Bach, Ole Geertz-Hansen, Kim Gustavson, Peter Aastrup, Pall S Leifsson, Jens Søndergaard, Barbara Nowak, Christian Sonne
The former lead-zinc mine at Mestersvig, Greenland, continues to contaminate the surrounding environment despite its operations ceasing over 50 years ago. Elevated concentrations of heavy metals are found in water, sediment and biota in the terrestrial, freshwater and marine environments. To shed light on the present contamination and its potential effects on local fish we investigated gill and liver histology of sculpins (Myoxocephalus spp.) around the former mining area. Two species of sculpins were caught; shorthorn sculpins (M...
May 16, 2018: Environmental Research
https://www.readbyqxmd.com/read/29777898/a-survey-of-health-professionals-views-on-acceptable-gestational-age-and-termination-of-pregnancy-for-fetal-anomaly
#7
Lisa Crowe, Ruth H Graham, Stephen C Robson, Judith Rankin
Termination of pregnancy for fetal anomaly is legal in the UK with no upper limit, if two doctors, in good faith, agree "there is a substantial risk that if the child were born it would suffer from such physical or mental abnormalities as to be seriously handicapped". This is Clause E of the Human Fertlisation and Embryology Act. The most commonly sighted Clause is C, which states "the pregnancy has not exceeded its twenty-fourth week and that the continuance of the pregnancy would involve risk, greater than if the pregnancy were terminated, of injury to the physical or mental health of the pregnant woman"...
May 16, 2018: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/29777890/cortical-activation-changes-in-hirayama-disease-following-anterior-cervical-decompression-and-fusion
#8
Hongli Wang, Yiwei Wu, Jian Song, Jianyuan Jiang, Feizhou Lu, Xiaosheng Ma, Xinlei Xia
BACKGROUND: Spinal cord injury may cause cortical reconstruction. We, therefore, explored thechanges in cortical activation before and after anterior cervical decompression and fusion surgery in patients with Hirayama disease (HD). METHODS: 17 HD cases were performed anterior cervical decompression and fusion surgery. BOLD-fMRI scan was performed preoperatively, 3 months, 6 months and 1 year after surgery. Activated voxels were compared between both hands after adjusting for head motion, slice timing, spatial normalization and image smoothing...
May 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29777871/pain-therapeutics-from-cone-snail-venoms-from-ziconotide-to-novel-non-opioid-pathways
#9
Helena Safavi-Hemami, Shane E Brogan, Baldomero M Olivera
There have been numerous attempts to develop non-opioid drugs for severe pain, but the vast majority of these efforts have failed. A notable exception is Ziconotide (Prialt®), approved by the FDA in 2004. In this review, we summarize the present status of Ziconotide as a therapeutic drug and introduce a wider framework: the potential of venom peptides from cone snails as a resource providing a continuous pipeline for the discovery of non-opioid pain therapeutics. An auxiliary theme that we hope to develop is that these venoms, already a validated starting point for non-opioid drug leads, should also provide an opportunity for identifying novel molecular targets for future pain drugs...
May 16, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/29777866/considerations-of-multiple-imputation-approaches-for-handling-missing-data-in-clinical-trials
#10
Hui Quan, Li Qi, Xiaodong Luo, Loic Darchy
Missing data exist in all clinical trials and missing data issue is a very serious issue in terms of the interpretability of the trial results. There is no universally applicable solution for all missing data problems. Methods used for handling missing data issue depend on the circumstances particularly the assumptions on missing data mechanisms. In recent years, if the missing at random mechanism cannot be assumed, conservative approaches such as the control-based and returning to baseline multiple imputation approaches are applied for dealing with the missing data issues...
May 16, 2018: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/29777855/polymer-lipid-hybrid-nanoparticles-as-enhanced-indomethacin-delivery-systems
#11
Annalisa Dalmoro, Sabrina Bochicchio, Shamil F Nasibullin, Paolo Bertoncin, Gaetano Lamberti, Anna Angela Barba, Rouslan I Moustafine
Non-steroidal anti-inflammatory drugs (NSAIDs), i.e. indomethacin used for rheumatoid arthritis and non-rheumatoid inflammatory diseases, are known for their injurious actions on the gastrointestinal (GI) tract. Mucosal damage can be avoided by using nanoscale systems composed by a combination of liposomes and biodegradable natural polymer, i.e. chitosan, for enhancing drug activity. Aim of this study was to prepare chitosan-lipid hybrid delivery systems for indomethacin dosage through a novel continuous method based on microfluidic principles...
May 16, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29777848/effects-on-mortality-and-cardiovascular-events-of-adherence-to-guideline-recommended-therapy-4-years-after-lower-extremity-arterial-revascularization
#12
M Thiney, N Della Schiava, R Ecochard, P Feugier, P Lermusiaux, A Millon, A Long
OBJECTIVES: All patients with lower extremity peripheral arterial disease (LE-PAD) should benefit from recommended pharmacologic therapies including antiplatelet agents, angiotensin converting enzyme inhibitors (ACE) or Angiotensin receptor blockers (ARB), and HMG-CoA-reductase inhibitors (statins). In the present study, this triple therapy was defined as the best medical treatment. This study was designed to determine the current risk for cardiovascular (CV) events and mortality and also to evaluate the effect of pharmacologic treatment on patient's survival, CV events and additional vascular surgery in vascularized LE-PAD patients...
May 16, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29777839/-mesenteric-steal-physiology-as-a-cause-of-claudication-and-chronic-mesenteric-ischemia
#13
Aleem K Mirza, J Michael Bacharach
Aortoiliac occlusive disease (AOID) results in varying degrees of pelvic and lower extremity arterial insufficiency. Treatment approach has evolved and endovascular therapies are being successfully reported for high-grade lesion. However, Trans Atlantic Inter-Society Consensus (TASC) D often necessitates open revascularization. Disease limited to the infrarenal segment does not typically affect intestinal perfusion in the absence of visceral aortic or mesenteric vessel involvement. Chronic mesenteric ischemia most commonly occurs due to atherosclerotic disease of two or three of the mesenteric vessels...
May 16, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29777823/updated-efficacy-analysis-including-secondary-population-results-for-oak-a-randomized-phase-iii-study-of-atezolizumab-vs-docetaxel-in-patients-with-previously-treated-advanced-non-small-cell-lung-cancer
#14
L Fehrenbacher, J von Pawel, K Park, A Rittmeyer, D R Gandara, S Ponce Aix, J-Y Han, S M Gadgeel, T Hida, D L Cortinovis, M Cobo, D M Kowalski, F De Marinis, M Gandhi, B Danner, C Matheny, M Kowanetz, P He, F Felizzi, H Patel, A Sandler, M Ballinger, F Barlesi
INTRODUCTION: The efficacy and safety of atezolizumab vs docetaxel as second- or third-line treatment in patients with advanced non-small cell lung cancer in the primary (n=850; ITT850) and secondary (n=1225; ITT1225) efficacy populations of the randomized phase III OAK study at an updated data cutoff were assessed. METHODS: Patients received atezolizumab 1200mg or docetaxel 75mg/m2 intravenously every 3 weeks until loss of clinical benefit or disease progression, respectively...
May 16, 2018: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/29777822/effects-of-global-signal-regression-and-subtraction-methods-on-resting-state-functional-connectivity-using-arterial-spin-labeling-data
#15
João Paulo Santos Silva, Luciana da Mata Mônaco, André Monteiro Paschoal, Ícaro Agenor Ferreira de Oliveira, Renata Ferranti Leoni
BACKGROUND: Arterial spin labeling (ASL) is an established magnetic resonance imaging (MRI) technique that is finding broader applications in functional studies of the healthy and diseased brain. To promote improvement in cerebral blood flow (CBF) signal specificity, many algorithms and imaging procedures, such as subtraction methods, were proposed to eliminate or, at least, minimize noise sources. Therefore, this study addressed the main considerations of how CBF functional connectivity (FC) is changed, regarding resting brain network (RBN) identification and correlations between regions of interest (ROI), by different subtraction methods and removal of residual motion artifacts and global signal fluctuations (RMAGSF)...
May 16, 2018: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29777810/bacterial-cellulose-nanofibers-as-reinforce-in-edible-fish-myofibrillar-protein-nanocomposite-films
#16
Bahareh Shabanpour, Mohsen Kazemi, Seyed Mahdi Ojagh, Parastoo Pourashouri
Bacterial cellulose nanofibers (BCNF) were employed in order to improve various properties of fish myofibrillar protein (FMP) films of Silver carp. Three different levels (2, 4 and 6%, w/w) of the nanoparticles were added to the protein polymer substrate. In this regard, it became clear that 6% BCNF-containing nanocomposites had the highest tensile strength, which was about 49% better than control samples. The nanoparticles had positive impact on the physical properties; BCNF-containing films showed a reduction in water vapor permeability, swelling and solubility indexes...
May 16, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29777786/photoselective-vaporisation-of-the-bladder-for-the-management-of-radiation-cystitis-technique-and-initial-outcomes
#17
Claire Pascoe, Daniel Christidis, Todd Manning, Benjamin W Lamb, Declan G Murphy, Nathan Lawrentschuk
Objective To describe our technique utilising photoselective vaporisation of the bladder (PVB) for the management of haemorrhagic cystitis and initial results of 12 patients. Materials and Method An audit of theatre records of a single surgeon was performed to identify patients who had undergone PVB for management of radiation-cystitis. TECHNIQUE: Rigid cystoscopy was performed. Ureteric catheters were placed and active bleeding sites targeted to optimise vision. Ablation was commenced using the vaporize function...
May 16, 2018: Urology
https://www.readbyqxmd.com/read/29777750/post-a-framework-for-set-based-association-analysis-in-high-dimensional-data
#18
Xueyuan Cao, E Olusegun George, Mingjuan Wang, Dale B Armstrong, Cheng Cheng, Susana Raimondi, Jeffrey E Rubnitz, James R Downing, Mondira Kundu, Stanley B Pounds
Evaluating the differential expression of a set of genes belonging to a common biological process or ontology has proven to be a very useful tool for biological discovery. However, existing gene-set association methods are limited to applications that evaluate differential expression across k⩾2 treatment groups or biological categories. This limitation precludes researchers from most effectively evaluating the association with other phenotypes that may be more clinically meaningful, such as quantitative variables or censored survival time variables...
May 16, 2018: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/29777749/burden-of-liver-disease-in-europe-epidemiology-and-analysis-of-risk-factors-to-identify-prevention-policies
#19
REVIEW
Laura Pimpin, Helena Cortez-Pinto, Francesco Negro, Emily Corbould, Jeffrey V Lazarus, Laura Webber, Nick Sheron
BACKGROUND & AIMS: The burden of liver disease in Europe continues to grow. We aimed to describe the epidemiology of liver diseases and their risk factors in European countries, and identify public health interventions that could impact on these risk factors to reduce the burden of liver disease. METHODS: As part of the HEPAHEALTH project, commissioned by EASL, we extracted information on historical and current prevalence and mortality from national and international literature and databases on liver disease in 35 countries in the WHO European region, as well as historical and recent prevalence data on their main determinants; alcohol consumption, obesity and hepatitis B and C virus infections...
May 16, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29777745/serum-adiponectin-ferritin-ratio-in-relation-to-the-risk-of-type-2-diabetes-and-insulin-sensitivity
#20
Alex Aregbesola, Vanessa D F de Mello, Jaana Lindström, Sari Voutilainen, Jyrki K Virtanen, Sirkka Keinänen-Kiukaanniemi, Tomi-Pekka Tuomainen, Jaakko Tuomilehto, Uusitupa Matti
AIMS: Body iron inhibits the metabolism of adiponectin, an insulin sensitizing adipokine. We investigated the relationships of baseline and average of 4-year change in values of serum adiponectin (sA), serum ferritin (sF) and sA/sF ratio on type 2 diabetes (T2D) risk and insulin sensitivity (Matsuda ISI) and secretion (disposition index; DI30 ). METHODS: Prospective analyses were conducted in participants with impaired glucose tolerance of the Finnish Diabetes Prevention Study (n=516) recruited in 1993-1998...
May 16, 2018: Diabetes Research and Clinical Practice
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