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https://www.readbyqxmd.com/read/27911460/retrospective-comparison-of-two-different-approaches-for-ultrasound-guided-internal-jugular-vein-cannulation-in-hemodialysis-patients
#1
Antonio Treglia, Dario Musone, Francesco Amoroso
BACKGROUND: Prevalent hemodialysis patients with vascular access consisting of a central venous catheter (CVC) are continuously increasing over the years. Improvement in evolution and CVC placement procedures represents therefore an essential tool to enhance performance and reduce intraoperative and long-term CVC complications. Internal jugular vein (IJV) catheterization techniques are different according to ultrasound probe position in relation to vein axis and to needle direction in relation to ultrasound beam...
December 2, 2016: Journal of Vascular Access
https://www.readbyqxmd.com/read/27899304/caffeine-for-apnea-of-prematurity-effects-on-the-developing-brain
#2
REVIEW
Anzari Atik, Richard Harding, Robert De Matteo, Delphi Kondos-Devcic, Jeanie Cheong, Lex W Doyle, Mary Tolcos
Caffeine is a methylxanthine that is widely used to treat apnea of prematurity (AOP). In preterm infants, caffeine reduces the duration of respiratory support, improves survival rates and lowers the incidence of cerebral palsy and cognitive delay. There is, however, little evidence relating to the immediate and long-term effects of caffeine on brain development, especially at the cellular and molecular levels. Experimental data are conflicting, with studies showing that caffeine can have either adverse or benefical effects in the developing brain...
November 26, 2016: Neurotoxicology
https://www.readbyqxmd.com/read/27883330/effects-of-17%C3%AE-estradiol-e2-on-aqueous-organisms-and-its-treatment-problem-a-review
#3
Emad Nazari, Fatihah Suja
Natural estrogens, estrone (E1), 17β-estradiol (E2) and estriol (E3) are endocrine disrupting chemicals (EDCs) that are discharged consistently and directly into surface waters with wastewater treatment plants (WWPTs) effluents, disposal sludges and in storm-water runoff. The most common and highest potential natural estrogen that causes estrogen activity in wastewater influent is E2. This review describes and attempts to summarize the main problems involved in the removal of E2 from WWTP by traditional processes, which fundamentally rely on activated sludge and provide an insufficient treatment for E2, as well as advanced oxidation processes (AOPs) that are applied in tertiary section treatment works...
December 1, 2016: Reviews on Environmental Health
https://www.readbyqxmd.com/read/27832403/intrapartum-transperineal-ultrasound-for-evaluating-uterine-contraction-intensity-in-the-second-stage-of-labor
#4
Miyuki Muramoto, Kiyotake Ichizuka, Junichi Hasegawa, Masamitsu Nakamura, Satoshi Dohi, Hiroshi Saito, Masaaki Nagatsuka
PURPOSE: To clarify whether intrapartum transperineal ultrasound (ITU) can be used to evaluate uterine contraction intensity, and whether the intensity is associated with the duration of the second stage. METHODS: A prospective observational study was performed involving 86 women with a normal singleton term fetus and more than three contractions every 10 min. ITU was performed for contractile and non-contractile periods of labor at the beginning of the second stage, and one representative "angle of progression (AoP)" image was selected for each period...
November 10, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27828145/absorption-correction-and-phase-function-shape-effects-on-the-closure-of-apparent-optical-properties
#5
J Pitarch, G Volpe, S Colella, R Santoleri, V Brando
We present a closure experiment between new inherent optical properties (IOPs: absorption a, scattering b, backscattering b<sub>b</sub>) and apparent optical properties (AOPs: remote-sensing reflectance R<sub>rs</sub>, irradiance reflectance R, and anisotropic factor at nadir Q<sub>n</sub>) data of Ionian and Adriatic seawaters, from very clear to turbid waters, ranging across one order of magnitude in R<sub>rs</sub>. The internal consistency of the IOP-AOP matchups was investigated though radiative transfer closure...
October 20, 2016: Applied Optics
https://www.readbyqxmd.com/read/27810529/integrated-processes-for-produced-water-polishing-enhanced-flotation-sedimentation-combined-with-advanced-oxidation-processes
#6
Silvia Jiménez, María M Micó, Marina Arnaldos, Enrique Ferrero, Jorge J Malfeito, Francisco Medina, Sandra Contreras
In this study, bench scale dissolved air flotation (DAF) and settling processes have been studied and compared to a novel flotation technology based on the use of glass microspheres of limited buoyancy and its combination with conventional DAF, (Enhanced DAF or E-DAF). They were evaluated as pretreatments for advanced oxidation processes (AOPs) to polish produced water (PW) for reuse purposes. Settling and E-DAF without air injection showed adequate turbidity and oil and grease (O&G) removals, with eliminations higher than 87% and 90% respectively, employing 70 mg L(-1) of FeCl3 and 83 min of settling time, and 57...
October 27, 2016: Chemosphere
https://www.readbyqxmd.com/read/27810111/embryonic-exposures-to-perfluorooctanesulfonic-acid-pfos-disrupt-pancreatic-organogenesis-in-the-zebrafish-danio-rerio
#7
Karilyn E Sant, Haydee M Jacobs, Katrina A Borofski, Jennifer B Moss, Alicia R Timme-Laragy
Perfluorooctanesulfonic acid (PFOS) is a ubiquitous environmental contaminant, previously utilized as a non-stick application for consumer products and firefighting foam. It can cross the placenta, and has been repeatedly associated with increased risk for diabetes in epidemiological studies. Here, we sought to establish the hazard posed by embryonic PFOS exposures on the developing pancreas in a model vertebrate embryo, and develop criteria for an adverse outcome pathway (AOP) framework to study the developmental origins of metabolic dysfunction...
October 31, 2016: Environmental Pollution
https://www.readbyqxmd.com/read/27808443/evaluating-the-potential-of-effluent-extracts-from-pulp-and-paper-mills-in-canada-brazil-and-new-zealand-to-affect-fish-reproduction-estrogenic-effects-in-fish
#8
Rodrigo Orrego, Craig B Milestone, L Mark Hewitt, John Guchardi, Tatiana Heid-Furley, Alison Slade, Deborah L MacLatchy, Douglas Holdway
This study examined the potential of pulp mill effluent from pulp producing countries (Canada, Brazil, New Zealand) to affect fish reproduction. Specifically, the estrogenic effects in juvenile rainbow trout (Oncorhynchus mykiss) pulse-exposed to 11 different mill effluent extracts (intra peritoneal IP-injections of SPE-DCM non-polar fraction). The results indicated that effluent extracts were estrogenic in juvenile trout irrespective of the gender, reflected by increasing level of plasma vitellogenin (VTG) (Brazil > New Zealand > Canada)...
November 3, 2016: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/27805828/the-adverse-outcome-pathway-for-skin-sensitisation-moving-closer-to-replacing-animal-testing
#9
REVIEW
Terry W Schultz, Gergana Dimitrova, Sabcho Dimitrov, Ovanes G Mekenyan
This article outlines the work of the Organisation for Economic Co-operation and Development (OECD) that led to being jointly awarded the 2015 Lush Black Box Prize. The award-winning work centred on the development of 'The Adverse Outcome Pathway for Skin Sensitisation Initiated by Covalent Binding to Proteins'. This Adverse Outcome Pathway (AOP) has provided the mechanistic basis for the integration of skin sensitisation-related information. Recent developments in integrated approaches to testing and assessment, based on the AOP, are summarised...
October 2016: Alternatives to Laboratory Animals: ATLA
https://www.readbyqxmd.com/read/27805826/the-use-of-peptide-reactivity-assays-for-skin-sensitisation-hazard-identification-and-risk-assessment
#10
REVIEW
G Frank Gerberick
Over the past 20 years or more, investigators have been developing non-animal test methods for use in assessing the skin sensitisation potential of chemicals. In parallel with this effort, the key biological events of skin sensitisation have been well-characterised in an Adverse Outcome Pathway (AOP) proposed by the Organisation for Economic Co-operation and Development (OECD). The key molecular initiating event of this AOP is haptenation or covalent modification of epidermal proteins. In this review, the strengths and limitations of the Direct Peptide Reactivity Assay (DPRA) are described, and the more recently developed Peroxidase Peptide Reactivity Assay (PPRA)...
October 2016: Alternatives to Laboratory Animals: ATLA
https://www.readbyqxmd.com/read/27805824/the-adverse-outcome-pathway-concept-a-basis-for-developing-regulatory-decision-making-tools
#11
REVIEW
Nathalie Delrue, Magdalini Sachana, Yuki Sakuratani, Anne Gourmelon, Eeva Leinala, Robert Diderich
The Adverse Outcome Pathway (AOP) concept is expected to guide risk assessors in their work to use all existing information on the effects of chemicals on humans and wildlife, and to target the generation of additional information to the regulatory objective. AOPs will therefore be used in the Organisation for Economic Co-operation and Development (OECD) chemical safety programme, as underlying scientific rationales for the development of alternative methods for hazard assessment, such as read-across, in vitro test methods or the development of integrated testing strategies that have the potential to replace animal tests...
October 2016: Alternatives to Laboratory Animals: ATLA
https://www.readbyqxmd.com/read/27805606/original-experimental-approach-for-assessing-transport-fuel-stability
#12
Kenza Bacha, Arij Ben Amara, Maira Alves Fortunato, Perrine Wund, Benjamin Veyrat, Pascal Hayrault, Axel Vannier, Michel Nardin, Laurie Starck
The study of fuel oxidation stability is an important issue for the development of future fuels. Diesel and kerosene fuel systems have undergone several technological changes to fulfill environmental and economic requirements. These developments have resulted in increasingly severe operating conditions whose suitability for conventional and alternative fuels needs to be addressed. For example, fatty acid methyl esters (FAMEs) introduced as biodiesel are more prone to oxidation and may lead to deposit formation...
October 21, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27796982/oxidative-stress-responses-of-daphnia-magna-exposed-to-effluents-spiked-with-emerging-contaminants-under-ozonation-and-advanced-oxidation-processes
#13
Ana Lourdes Oropesa, Sara C Novais, Marco F L Lemos, Azahara Espejo, Carlos Gravato, Fernando Beltrán
Integration of conventional wastewater treatments with advanced oxidation processes (AOPs) has become of great interest to remove pharmaceuticals and their metabolites from wastewater. However, application of these technologies generates reactive oxygen species (ROS) that may reach superficial waters through effluents from sewage treatment plants. The main objective of the present study was to elucidate if ROS present in real effluents after biological and then chemical (single ozonation, solar photolytic ozonation, solar photocatalytic ozonation (TiO2, Fe3O4) and solar photocatalytic oxidation (TiO2)) treatments induce oxidative stress in Daphnia magna...
October 29, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27780885/futuretox-iii-bridges-for-translation
#14
Daland R Juberg, Thomas B Knudsen, Miriam Sander, Nancy B Beck, Elaine M Faustman, Donna L Mendrick, John R Fowle, Thomas Hartung, Raymond R Tice, Emmanuel Lemazurier, Richard A Becker, Suzanne Compton Fitzpatrick, George P Daston, Alison Harrill, Ronald N Hines, Douglas A Keller, John C Lipscomb, David Watson, Tina Bahadori, Kevin M Crofton
Future Tox III, a Society of Toxicology Contemporary Concepts in Toxicology workshop, was held in November 2015. Building upon Future Tox I and II, Future Tox III was focused on developing the high throughput risk assessment paradigm and taking the science of in vitro data and in silico models forward to explore the question-what progress is being made to address challenges in implementing the emerging big-data toolbox for risk assessment and regulatory decision-making. This article reports on the outcome of the workshop including 2 examples of where advancements in predictive toxicology approaches are being applied within Federal agencies, where opportunities remain within the exposome and AOP domains, and how collectively the toxicology community across multiple sectors can continue to bridge the translation from historical approaches to Tox21 implementation relative to risk assessment and regulatory decision-making...
October 25, 2016: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/27776445/treatment-of-florfenicol-of-synthetic-trout-fish-farm-wastewater-through-nanofiltration-and-photocatalyst-oxidation
#15
Zakie Esmaili, Fatemeh Cheshmberah, Ali R Solaimany Nazar, Mehrdad Farhadian
The aquaculture system is a potential significant source of antibacterial agents. The removal of florfenicol (Flo) antibiotic from synthetic aqueous wastewater is performed by applying a commercial thin film composite polyamide nanofilter (NF). For concentrated wastewater treatment, the advanced oxidation process (AOP) is applied. The effects of pH, pressure and Flo concentration on removal efficiency of NF and the effects of pH, Flo concentration and dosage of hydrogen peroxide and contact time on the AOP are assessed...
October 24, 2016: Environmental Technology
https://www.readbyqxmd.com/read/27771897/profiling-of-signaling-proteins-in-penumbra-after-focal-photothrombotic-infarct-in-the-rat-brain-cortex
#16
Svetlana Demyanenko, Anatoly Uzdensky
In ischemic stroke, cell damage propagates from infarct core to surrounding tissue. To reveal proteins involved in neurodegeneration and neuroprotection, we explored the protein profile in penumbra surrounding the photothrombotic infarct core induced in rat cerebral cortex by local laser irradiation after Bengal Rose administration. Using antibody microarrays, we studied changes in expression of 224 signaling proteins 1, 4, or 24 h after photothrombotic infarct compared with untreated contralateral cortex...
October 22, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27770727/sulfate-radical-based-oxidation-of-fluoroquinolone-antibiotics-kinetics-mechanisms-and-effects-of-natural-water-matrices
#17
Canlan Jiang, Yuefei Ji, Yuanyuan Shi, Jifei Chen, Tianming Cai
Widespread occurrence of fluoroquinolone antibiotics (FQs) in surface water, groundwater, soil and sediment has been reported and their remediation is essentially needed. Sulfate radical (SO4(-)) based advanced oxidation processes (SR-AOPs) are promising technologies for soil and groundwater remediation. In this study, the degradation kinetics, mechanisms, and effects of natural water matrices on heat-activated persulfate (PS) oxidation of FQs were systematically investigated. Experimental results clearly demonstrated that 92% of CIP was removed within 180 min (pH = 7, 60 °C)...
October 12, 2016: Water Research
https://www.readbyqxmd.com/read/27760427/doxapram-treatment-for-apnea-of-prematurity-a-systematic-review
#18
Roseanne J S Vliegenthart, Christine H Ten Hove, Wes Onland, Anton H L C van Kaam
BACKGROUND: Apnea of prematurity (AOP) is a common complication of preterm birth, for which caffeine is the first treatment of choice. In case of persistent AOP, doxapram has been advocated as an additional therapy. OBJECTIVE: To identify and appraise all existing evidence regarding efficacy and safety of doxapram use for AOP in infants born before 34 weeks of gestational age. METHODS: All studies reporting on doxapram use for AOP were identified by searching electronic databases, references from relevant studies, and abstracts from the Societies for Pediatric Research...
October 20, 2016: Neonatology
https://www.readbyqxmd.com/read/27757752/degradation-of-the-cytostatic-5-fluorouracil-in-water-by-fenton-and-photo-assisted-oxidation-processes
#19
Mariana Governo, Mónica S F Santos, Arminda Alves, Luís M Madeira
Cytostatics are part of the forefront research topics due to their high prescription, high toxicity, and the lack of effective solutions to stop their entrance and spread in the environment. Among them, 5-Fluorouracil (5-Fu) has received particular attention because is one of the most prescribed active substances in chemotherapy worldwide. The degradation of 5-Fu by advanced oxidation processes (AOPs) is a poorly addressed topic, and this work brings valuable inputs concerning this matter. Herein, the efficacy of Fenton's process in the degradation of 5-Fu is explored for the first time; the study of the main variables and its successful application to the treatment of real wastewaters is demonstrated...
October 19, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27725928/association-between-apnea-of-prematurity-and-respiratory-distress-syndrome-in-late-preterm-infants-an-observational-study
#20
François Olivier, Sophie Nadeau, Georges Caouette, Bruno Piedboeuf
BACKGROUND: Late preterm infants (34-36 weeks' gestation) remain a population at risk for apnea of prematurity (AOP). As infants affected by respiratory distress syndrome (RDS) have immature lungs, they might also have immature control of breathing. Our hypothesis is that an association exists between RDS and AOP in late preterm infants. OBJECTIVE: The primary objective of this study was to assess the association between RDS and AOP in late preterm infants. The secondary objective was to evaluate if an association exists between apparent RDS severity and AOP...
2016: Frontiers in Pediatrics
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