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https://www.readbyqxmd.com/read/28938765/advanced-oxidation-process-sanitization-of-hatching-eggs-reduces-salmonella-in-broiler-chicks
#1
A C Rehkopf, J A Byrd, C D Coufal, T Duong
The microbial quality of eggs entering the hatchery is an important critical control point for biosecurity, pathogen reduction, and food safety programs in poultry production. Developing interventions to reduce Salmonella contamination of eggs is important to improving the microbial food safety of poultry and poultry products. The hydrogen peroxide (H2O2) and ultraviolet light (UV) Advanced Oxidation Process (AOP) has been previously demonstrated to be effective in reducing Salmonella on the surface of experimentally contaminated eggs...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28934726/application-of-adverse-outcome-pathways-to-u-s-epa-s-endocrine-disruptor-screening-program
#2
REVIEW
Patience Browne, Pamela D Noyes, Warren M Casey, David J Dix
BACKGROUND: The U.S. EPA's Endocrine Disruptor Screening Program (EDSP) screens and tests environmental chemicals for potential effects in estrogen, androgen, and thyroid hormone pathways, and it is one of the only regulatory programs designed around chemical mode of action. OBJECTIVES: This review describes the EDSP's use of adverse outcome pathway (AOP) and toxicity pathway frameworks to organize and integrate diverse biological data for evaluating the endocrine activity of chemicals...
September 1, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28918607/modeling-the-ph-and-temperature-dependence-of-aqueousphase-hydroxyl-radical-reaction-rate-constants-of-organic-micropollutants-using-qspr-approach
#3
Shikha Gupta, Nikita Basant
Designing of advanced oxidation process (AOP) requires knowledge of the aqueous phase hydroxyl radical ((●)OH) reactions rate constants (k OH), which are strictly dependent upon the pH and temperature of the medium. In this study, pH- and temperature-dependent quantitative structure-property relationship (QSPR) models based on the decision tree boost (DTB) approach were developed for the prediction of k OH of diverse organic contaminants following the OECD guidelines. Experimental datasets (n = 958) pertaining to the k OH values of aqueous phase reactions at different pH (n = 470; 1...
September 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28917817/mechanistic-insight-into-degradation-of-endocrine-disrupting-chemical-by-hydroxyl-radical-an-experimental-and-theoretical-approach
#4
Ruiyang Xiao, Lingwei Gao, Zongsu Wei, Richard Spinney, Shuang Luo, Donghong Wang, Dionysios D Dionysiou, Chong-Jian Tang, Weichun Yang
Advanced oxidation processes (AOPs) based on formation of free radicals at ambient temperature and pressure are effective for treating endocrine disrupting chemicals (EDCs) in waters. In this study, we systematically investigated the degradation kinetics of bisphenol A (BPA), a representative EDC by hydroxyl radical (OH) with a combination of experimental and theoretical approaches. The second-order rate constant (k) of BPA with OH was experimentally determined to be 7.2 ± 0.34 × 10(9) M(-1) s(-1) at pH 7...
September 13, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28910702/respiratory-atp-cost-and-benefit-of-arbuscular-mycorrhizal-symbiosis-with-nicotiana-tabacum-at-different-growth-stages-and-under-salinity
#5
Néstor Fernández Del-Saz, Antonia Romero-Munar, David Alonso, Ricardo Aroca, Elena Baraza, Jaume Flexas, Miquel Ribas-Carbo
Growth and maintenance partly depend on both respiration and ATP production during oxidative phosphorylation in leaves. Under stress, ATP is needed to maintain the accumulated biomass. ATP production mostly proceeds from the cytochrome oxidase pathway (COP), while respiration via the alternative oxidase pathway (AOP) may decrease the production of ATP per oxygen consumed, especially under phosphorus (P) limitation and salinity conditions. Symbiosis with arbuscular mycorrhizal (AM) fungi is reputed by their positive effect on plant growth under stress at mature stages of colonization; however, fungal colonization may decrease plant growth at early stages...
September 7, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28903780/stat-6-signaling-pathway-and-not-interleukin-1-mediates-multi-walled-carbon-nanotube-induced-lung-fibrosis-in-mice-insights-from-an-adverse-outcome-pathway-framework
#6
Jake Nikota, Allyson Banville, Laura Rose Goodwin, Dongmei Wu, Andrew Williams, Carole Lynn Yauk, Håkan Wallin, Ulla Vogel, Sabina Halappanavar
BACKGROUND: The accumulation of MWCNTs in the lung environment leads to inflammation and the development of disease similar to pulmonary fibrosis in rodents. Adverse Outcome Pathways (AOPs) are a framework for defining and organizing the key events that comprise the biological changes leading to undesirable events. A putative AOP has been developed describing MWCNT-induced pulmonary fibrosis; inflammation and the subsequent healing response induced by inflammatory mechanisms have been implicated in disease progression...
September 13, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28898862/degradation-and-intermediates-of-diclofenac-as-instructive-example-for-decomposition-of-recalcitrant-pharmaceuticals-by-hydroxyl-radicals-generated-with-pulsed-corona-plasma-in-water
#7
Robert Banaschik, Helena Jablonowski, Patrick J Bednarski, Juergen F Kolb
Seven recalcitrant pharmaceutical residues (diclofenac, 17α-ethinylestradiol, carbamazepine, ibuprofen, trimethoprim, diazepam, diatrizoate) were decomposed by pulsed corona plasma generated directly in water. The detailed degradation pathway was investigated for diclofenac and 21 intermediates could be identified in the degradation cascade. Hydroxyl radicals have been found primarily responsible for decomposition steps. By spin trap enhanced electron paramagnetic resonance spectroscopy (EPR), OH-adducts and superoxide anion radical adducts were detected and could be distinguished applying BMPO as a spin trap...
August 25, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28892025/a-novel-approach-to-overcome-movement-artifact-when-using-a-laser-speckle-contrast-imaging-system-for-alternating-speeds-of-blood-microcirculation
#8
Shayan Bahadori, Tikki Immins, Thomas W Wainwright
The laser speckle contrast imager (LSCI) provides a powerful yet simple technique for measuring microcirculatory blood flow. Ideal for blood dynamic responses, the LSCI is used in the same way as a conventional Laser Doppler Imager (LDI). However, with a maximum skin depth of approximately 1 mm, the LSCI is designed to focus on mainly superficial blood flow. It is used to measure skin surface areas of up to 15 cm x 20 cm. The new technique introduced in this paper accounts for alternating speeds of microcirculations; i...
August 30, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28884572/nanobody-based-apolipoprotein-e-immunosensor-for-point-of-care-testing
#9
Xiang Ren, Junrong Yan, Dan Wu, Qin Wei, Yakun Wan
Alzheimer's disease (AD) biomarkers can reflect the neurochemical indicators used to estimate the risk in clinical nephrology. Apolipoprotein E (ApoE) is an early biomarker for AD in clinical diagnosis. In this research, through bactrian camel immunization, lymphocyte isolation, RNA extraction, and library construction, ApoE-specific Nbs with high affinity were successfully separated from an immune phage display nanobody library. Herein, a colorimetric immunosensor was developed for the point-of-care testing of ApoE by layer-by-layer nanoassembly techniques and novel nanobodies (Nbs)...
September 11, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28876429/mueller-hillis-maneuver-and-angle-of-progression-are-they-correlated
#10
Sofia Mendes, Rita Silva, Inês Martins, Susana Santo, Nuno Clode
Objective: Mueller-Hillis maneuver (MHM) and angle of progression (AOP) measured by transperineal ultrasound have been used to assess fetal head descent during the second stage of labor. We aimed to assess whether AOP correlates with MHM in the second stage of labor. Method: A prospective observational study including women with singleton pregnancy in the second stage of labor was performed. The AOP was measured immediately after the Mueller-Hillis maneuver. A receiver-operating characteristics (ROC) curve analysis was performed to determine the best discriminatory AOP cut-off for the identification of a positive MHM...
June 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28872857/cross-linked-collagen-triple-helices-by-oxime-ligation
#11
Nina B Hentzen, Linde E J Smeenk, Jagna Witek, Sereina Riniker, Helma Wennemers
Covalent cross-links are crucial for the folding and stability of triple-helical collagen, the most abundant protein in nature. Cross-linking is also an attractive strategy for the development of synthetic collagen-based biocompatible materials. Nature uses interchain disulfide bridges to stabilize collagen trimers. However, their implementation into synthetic collagen is difficult and requires the replacement of the canonical amino acids (4R)-hydroxyproline and proline by cysteine or homocysteine, which reduces the preorganization and thereby stability of collagen triple helices...
September 5, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28871545/measurements-of-electron-partitioning-between-cytochrome-and-alternative-oxidase-pathways-in-plant-tissues
#12
Nestor Fernandez Del-Saz, Miquel Ribas-Carbo, Gabriel Martorell, Alisdair R Fernie, Igor Florez-Sarasa
Plant respiration is characterized by the existence of the alternative oxidase pathway (AOP) that competes with cytochrome oxidase pathway (COP) for the electrons of the ubiquinone pool of the mitochondrial electron transport chain, thus reducing ATP synthesis. The oxygen (O2) isotope fractionation technique is the only available to determine the electron partitioning between the two pathways and their in vivo activities in plant tissues. In this chapter, the basis of the O2 isotope fractionation technique and its derived calculations are carefully explained together with a detailed description of the dual-inlet isotope ratio mass spectrometry (DI-IRMS) system and the protocol developed at the University of Balearic Islands...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28854381/degradation-of-acrylamide-by-the-uv-chlorine-advanced-oxidation-process
#13
Ze-Chen Gao, Yi-Li Lin, Bin Xu, Yang Pan, Sheng-Ji Xia, Nai-Yun Gao, Tian-Yang Zhang, Ming Chen
The degradation of acrylamide (AA) during UV/chlorine advanced oxidation process (AOP) was investigated in this study. The degradation of AA was negligible during UV irradiation alone. However, AA could be effectively degraded and mineralized during UV/chlorination due to the generation of hydroxyl radicals (OH). The degradation kinetics of AA during UV/chlorination fitted the pseudo-first order kinetics with the rate constant between AA and OH radicals being determined as 2.11 × 10(9) M(-1) s(-1). The degradation rate and mineralization of AA during UV/chlorination were significantly promoted at acidic conditions as well as increasing chlorine dosage...
August 19, 2017: Chemosphere
https://www.readbyqxmd.com/read/28845052/should-breast-cancer-surgery-be-done-in-an-outpatient-setting-health-economics-from-the-perspective-of-service-providers
#14
Margaret Formago, Michael G Schrauder, Claudia Rauh, Carolin C Hack, Sebastian M Jud, Thomas Hildebrandt, Rüdiger Schulz-Wendtland, S Frentz, S Graubert, Matthias W Beckmann, Michael P Lux
INTRODUCTION: The care of patients with breast cancer is extremely complex and requires interdisciplinary care in certified facilities. These specialized facilities provide numerous services without being correspondingly remunerated. The question whether breast cancer surgery should be performed in an outpatient setting to reduce costs is increasingly being debated. This study compares inpatient surgical treatment with a model of the same surgery performed on an outpatient basis to examine the potential financial impact...
August 2017: Geburtshilfe und Frauenheilkunde
https://www.readbyqxmd.com/read/28833258/the-antioxidant-capacity-of-erythrocyte-concentrates-is-increased-during-the-first-week-of-storage-and-correlated-with-the-uric-acid-level
#15
M Bardyn, S Maye, A Lesch, J Delobel, J-D Tissot, F Cortés-Salazar, P Tacchini, N Lion, H H Girault, M Prudent
BACKGROUND AND OBJECTIVES: Red blood cells (RBCs) suffer from lesions during cold storage, depending in part on their ability to counterbalance oxidative stress by activating their antioxidant defence. The aim of this study was to monitor the antioxidant power (AOP) in erythrocyte concentrates (ECs) during cold storage. MATERIALS AND METHODS: Six ECs were prepared in saline-adenine-glucose-mannitol (SAGM) additive solution and followed during 43 days. The AOP was quantified electrochemically using disposable electrode strips and compared with results obtained from a colorimetric assay...
August 18, 2017: Vox Sanguinis
https://www.readbyqxmd.com/read/28830000/fate-and-abundance-of-classical-and-heteroatomic-naphthenic-acid-species-after-advanced-oxidation-processes-insights-and-indicators-of-transformation-and-degradation
#16
Mohamed N A Meshref, Pamela Chelme-Ayala, Mohamed Gamal El-Din
The toxicological effects from all components in oil sands process-affected water (OSPW) are not known. Alternatively, monitoring the variations and abundance of different classes and compounds after treatments might be a useful approach in OSPW remediation. In this study, the variations in the compositions of classical and heteroatomic naphthenic acids (NAs) after treatment using advanced oxidation processes (AOPs), mainly ozone and peroxone, and two different mass spectrometry methods; ultra-performance liquid chromatography time-of-flight (UPLC-TOFMS) and Fourier transform ion cyclotron resonance (FTICR-MS), were examined...
August 4, 2017: Water Research
https://www.readbyqxmd.com/read/28820023/use-of-oxalic-acid-as-inducer-in-photocatalytic-oxidation-of-cresol-red-in-aqueous-solution-under-natural-and-artificial-light
#17
N Seraghni, I Ghoul, I Lemmize, A Reguig, N Debbache, T Sehili
This work was carried out in the field of water treatment using advanced oxidation processes (AOPs), especially photolysis of carboxylic acid leads to the formation in situ of hydroxyl radical ((.)OH). Cresol red (CR) degradation induced by organic acids/UV system was investigated in aqueous solution. The preliminary study of CR-organic acid mixture in the dark and at room temperature allowed confirming the absence of interaction under our experimental conditions. However, up on irradiation at 365 nm the percentage of elimination of CR was 89% after 5 hours of irradiation...
August 18, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28819985/prediction-of-labor-outcome-using-serial-transperineal-ultrasound-in-the-first-stage-of-labor
#18
Chung Ming Chor, Liona Chiu Yee Poon, Tak Yeung Leung
OBJECTIVE: To evaluate the feasibility of predicting labor outcome using serial transperineal ultrasound (TPU) in the early active phase of labor. METHODS: This is a single center prospective observational study in a tertiary obstetrics unit in Hong Kong. Nulliparous women carrying singleton pregnancy at the onset of active phase of labor were recruited. Serial 3D volumes by TPU were acquired and then repeated after 1 and 2 hours, which were subsequently analyzed for fetal head symphyseal distance (HSD), angle of progression (AoP) and fetal head progression distance (PD)...
August 18, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28810228/evolution-of-molecular-weight-and-fluorescence-of-effluent-organic-matter-efom-during-oxidation-processes-revealed-by-advanced-spectrographic-and-chromatographic-tools
#19
Zhiqiang Chen, Mo Li, Qinxue Wen, Nanqi Ren
Effluent organic matter (EfOM) is an emerging concern to receiving aquatic environment due to its refractory property. The degradation of EfOM in ozonation and other two advanced oxidation processes (AOPs), UV/H2O2 and UV/persulfate (PS), was investigated in this study. Fluorescence spectra coupled with parallel factor analysis (PARAFAC) and two-dimensional correlation gel permeation chromatography (2D-GPC) were used to track the evolution of EfOM during each oxidation process. Results showed that the degradation of EfOM indicated by dissolved organic carbon (DOC), UV254 and fluorescence components, fitted well with pseudo-first-order kinetic model during the oxidation processes...
August 4, 2017: Water Research
https://www.readbyqxmd.com/read/28810226/rapid-removal-of-organic-pollutants-by-activation-sulfite-with-ferrate
#20
Jing Zhang, Liang Zhu, Zhenyu Shi, Ying Gao
With the addition of sulfite, almost complete removal of seven out of eight tested contaminants, i.e. benzotriazole, phenol, ciprofloxacin, methyl blue, rhodamine B, methyl orange and sulfamethoxazole, was observed in 30 s except for sulfamethoxazole at pH 9.0, while Fe(VI) alone only resulted in less than 6% removal. In this study, the mechanism of sulfite/Fe(VI) process was explored for the first time. Firstly, sulfite attacks Fe(VI) via a 1-e(-) transfer forming the primary sulfite radical (SO3(-)), then SO3(-) reacts rapidly with oxygen in a diffusion controlled rate to form a much more reactive peroxyl radical SO5(-), which further reacts with HSO3(-) and produces SO4(-)...
November 2017: Chemosphere
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