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https://www.readbyqxmd.com/read/28437727/new-inter-correlated-genes-targeted-by-diatom-derived-polyunsaturated-aldehydes-in-the-sea-urchin-paracentrotus-lividus
#1
Nadia Ruocco, Anna Maria Fedele, Susan Costantini, Giovanna Romano, Adrianna Ianora, Maria Costantini
The marine environment is continually subjected to the action of stressors (including natural toxins), which represent a constant danger for benthic communities. In the present work using network analysis we identified ten genes on the basis of associated functions (FOXA, FoxG, GFI-1, nodal, JNK, OneCut/Hnf6, TAK1, tcf4, TCF7, VEGF) in the sea urchin Paracentrotus lividus, having key roles in different processes, such as embryonic development and asymmetry, cell fate specification, cell differentiation and morphogenesis, and skeletogenesis...
April 21, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28437697/catalytic-polymer-clay-composite-for-enhanced-removal-and-degradation-of-diazinon
#2
Itamar A Shabtai, Yael G Mishael
It is well established that organophosphate pesticides, such as diazinon, pose environmental and health risks. Diazinon is prone to rapid acidic hydrolysis, forming the less toxic compound 2-isopropyl-6-methyl-4-pyrimidinol (IMP). In this study, diazinon surface catalyzed hydrolysis was achieved by its adsorption to a composite, based on protonated poly (4-vinyl-pyridine-co-styrene) (HPVPcoS) and montmorillonite (MMT) clay. The adsorption affinity and kinetics of diazinon to HPVPcoS-MMT were significantly higher than those obtained to the deprotonated PVPcoS-MMT, emphasizing the importance of hydrogen bonding...
April 6, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28436824/efficient-treatment-of-aniline-containing-wastewater-in-bipolar-membrane-microbial-electrolysis-cell-fenton-system
#3
Xiaohu Li, Xiangdan Jin, Nannan Zhao, Irini Angelidaki, Yifeng Zhang
Aniline-containing wastewater can cause significant environmental problems and threaten the humans's life. However, rapid degradation of aniline with cost-efficient methods remains a challenge. In this work, a novel microbial electrolysis cell with bipolar membrane was integrated with Fenton reaction (MEC-Fenton) for efficient treatment of real wastewater containing a high concentration (4460 ± 52 mg L(-1)) of aniline. In this system, H2O2 was in situ electro-synthesized from O2 reduction on the graphite cathode and was simultaneously used as source of OH for the oxidation of aniline wastewater under an acidic condition maintained by the bipolar membrane...
April 19, 2017: Water Research
https://www.readbyqxmd.com/read/28436648/statistical-variable-selection-an-alternative-prioritization-strategy-during-the-non-target-analysis-of-lc-hr-ms-data
#4
Saer Samanipour, Malcolm J Reid, Kevin V Thomas
Liquid chromatography coupled to high resolution mass spectrometry (LC-HR-MS) has been one of the main analytical tools for the analysis of small polar organic pollutants in the environment. LC-HR-MS typically produces a large amount of data for a single chromatogram. The analyst is therefore required to perform prioritization prior to non-target structural elucidation. In the present study we have combined the F-ratio statistical variable selection and the apex detection algorithms in order to perform prioritization in data sets produced via LC-HR-MS...
April 24, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28436643/ultrathin-in2o3-nanosheets-with-uniform-mesopores-for-highly-sensitive-nitric-oxide-detection
#5
Xue Wang, Juan Su, Hui Chen, Guo-Dong Li, Zhifang Shi, Haifeng Zou, Xiaoxin Zou
Nitric oxide (NOx, including NO and NO2) is one of the most dangerous environmental toxins and pollutants, mainly origins from vehicle exhaust and industrial emission. The development of sensitive NOx gas sensors is quite urgent for human health and environmental friendly. Up to now, it still remains a great challenge to develop NOx gas sensor, which can satisfy multiple application demands for sensing performance (such as high response, low detection temperature and limit). In this work, ultrathin In2O3 nanosheets with uniform mesopores were successfully synthesized through a facile two-step synthetic method...
April 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28436525/graphitic-c3n4-nanosheets-synergistic-effects-of-hydrogenation-and-n-n-junctions-for-enhanced-photocatalytic-activities
#6
Minjie Zhou, Zhaohui Hou, Xiaobo Chen
The increasing concern about environmental pollution and fossil fuel energies have urged researchers to seek renewable energy sources and methods for pollutant decomposition. Photocatalysis seems to be one of the most promising approaches, which uses natural sunlight to produce hydrogen from water and removes organic pollutants from the environment. Among the various photocatalysts, graphitic carbon nitride (g-C3N4) has recently attracted much attention as a metal-free photocatalyst; however, it did not give a satisfactory performance...
April 24, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28435777/recent-progress-in-metal-organic-frameworks-for-applications-in-electrocatalytic-and-photocatalytic-water-splitting
#7
REVIEW
Wei Wang, Xiaomin Xu, Wei Zhou, Zongping Shao
The development of clean and renewable energy materials as alternatives to fossil fuels is foreseen as a potential solution to the crucial problems of environmental pollution and energy shortages. Hydrogen is an ideal energy material for the future, and water splitting using solar/electrical energy is one way to generate hydrogen. Metal-organic frameworks (MOFs) are a class of porous materials with unique properties that have received rapidly growing attention in recent years for applications in water splitting due to their remarkable design flexibility, ultra-large surface-to-volume ratios and tunable pore channels...
April 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28434674/transcriptome-analysis-of-the-brain-of-the-sea-bream-sparus-aurata-after-exposure-to-human-pharmaceuticals-at-realistic-environmental-concentrations
#8
Miriam Hampel, Julian Blasco, Massimiliano Babbucci, Serena Ferraresso, Luca Bargelloni, Massimo Milan
Human pharmaceuticals such as Acetaminophen, Atenolol and Carbamazepine are pseudo persistent aquatic pollutants with yet unknown sub-lethal effects at environmentally relevant concentrations. Gilthead seabream (Sparus aurata) were exposed to Acetaminophen: 31.90 ± 11.07 μg L(-1); Atenolol: 0.95 ± 0.38 μg L(-1) and Carbamazepine: 6.95 ± 0.13 μg L(-1) in a 28 day flow through experiment to (1) determine whether exposure to low concentrations in the μg·L(-1) range of the pharmaceuticals alters the brain transcriptome and, (2) identify different expression profiles and treatment specific modes of action and pathways...
April 12, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28434228/rapid-biodegradation-of-the-herbicide-2-4-dichlorophenoxyacetic-acid-by-cupriavidus-gilardii-t-1
#9
Xiangwei Wu, Wenbo Wang, Junwei Liu, Dandan Pan, Xiaohui Tu, Pei Lv, Yi Wang, Haiqun Cao, Yawen Wang, Rimao Hua
Phytotoxicity and environmental pollution of residual herbicides have caused much public concern during the past several decades. An indigenous bacterial strain capable of degrading 2,4-dichlorophenoxyacetic acid (2,4-D), designated T-1, was isolated from soybean field soil and identified as Cupriavidus gilardii. The strain T-1 degraded 2,4-D 3.39 times faster than the model strain Cupriavidus necator JMP134. T-1 could also efficiently degrade 2-methyl-4-chloro-phenoxyacetic acid (MCPA), MCPA isooctyl ester, and 2-(2,4-dicholrophenoxy)-propionic acid (2,4-DP)...
April 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28433929/pollution-characteristics-and-human-health-risks-of-potentially-eco-toxic-elements-ptes-in-road-dust-from-metropolitan-area-of-hefei-china
#10
Muhammad Ubaid Ali, Guijian Liu, Balal Yousaf, Qumber Abbas, Habib Ullah, Mehr Ahmed Mujtaba Munir, Biao Fu
This study aims to investigate the pollution characteristics of road dust and their associated health risks of potentially toxic elements (PTEs) to humans using array-based risk assessment models described by United States Environmental Protection Agency (USEPA) in a metropolitan area of Hefei, China. Geoaccumulation index (Igeo) was used to describe pollution characteristics of roadside dust in urban, periurban and industrial areas. Results indicate that industrial roadside dust was contaminated with Fe, Ni, Cu, Ti, V, Pb, Ba, Sb, Cr, Sn, Pb, As and Ga showing Igeo value (log2 (x)) between Igeo class 3 to 4...
April 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28433925/low-dose-pollutant-mixture-triggers-metabolic-disturbances-in-female-mice-leading-to-common-and-specific-features-as-compared-to-a-high-fat-diet
#11
Emmanuel Labaronne, Claudie Pinteur, Nathalie Vega, Sandra Pesenti, Benoit Julien, Emmanuelle Meugnier-Fouilloux, Hubert Vidal, Danielle Naville, Brigitte Le Magueresse-Battistoni
Environmental pollutants are potential etiologic factors of obesity and diabetes that reach epidemic proportions worldwide. However, it is important to determine if pollutants could exert metabolic defects without directly inducing obesity. The metabolic disturbances triggered in nonobese mice lifelong exposed to a mixture of low-dose pollutants (2,3,7,8-tetrachlorodibenzo-p-dioxine, polychlorinated biphenyl 153, diethylhexyl-phthalate, and bisphenol A) were compared with changes provoked by a high-fat high-sucrose (HFHS) diet not containing the pollutant mixture...
April 8, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28433765/geochemical-processes-controlling-the-distribution-and-concentration-of-metals-in-soils-from-a-patagonian-argentina-salt-marsh-affected-by-mining-residues
#12
Yanina L Idaszkin, María Del Pilar Alvarez, Eleonora Carol
Heavy metal pollution that affects salt marshes is a major environmental concern due to its toxic nature, persistence, and potential risk to organisms and to human health. Mining waste deposits originated four decades ago, by the metallurgical extraction of heavy metals, are found near to the San Antonio salt marsh in Patagonia. The aim of the work was to determine the geochemical processes that control the distribution and concentration of Cu, Fe, Pb and Zn in the soils of this Patagonian salt marsh. A survey of the mining waste deposits was carried out where three dumps were identified...
April 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28433638/metabolomic-analysis-for-combined-hepatotoxicity-of-chlorpyrifos-and-cadmium-in-rats
#13
Ming-Yuan Xu, Pan Wang, Ying-Jian Sun, Yi-Jun Wu
Pesticides and heavy metals are widespread environmental pollutants. Although the acute toxicity of organophosphorus pesticide chlorpyrifos (CPF) and toxic heavy metal cadmium (Cd) is well characterized, the combined toxicity of CPF and Cd, especially the hepatotoxicity of the two chemicals with long-term exposure at a low dose, remained unclear. In this study, we investigated the toxicity in the liver of rats upon subchronic exposure to CPF and Cd at environmentally relevant doses. Rats were given three different doses (1/135 LD50, 1/45 LD50 and 1/15 LD50) of CPF and Cd as well as their mixtures by oral gavage for 90 days...
April 19, 2017: Toxicology
https://www.readbyqxmd.com/read/28433595/effects-of-chlorpyrifos-on-soil-carboxylesterase-activity-at-an-aggregate-size-scale
#14
Juan C Sanchez-Hernandez, Marco Sandoval
The impact of pesticides on extracellular enzyme activity has been mostly studied on the bulk soil scale, and our understanding of the impact on an aggregate-size scale remains limited. Because microbial processes, and their extracellular enzyme production, are dependent on the size of soil aggregates, we hypothesized that the effect of pesticides on enzyme activities is aggregate-size specific. We performed three experiments using an Andisol to test the interaction between carboxylesterase (CbE) activity and the organophosphorus (OP) chlorpyrifos...
April 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28432993/chemical-biological-and-dna-markers-for-tracing-slaughterhouse-effluent
#15
P J Harvey, M P Taylor, H K Handley, S Foster, M R Gillings, A J Asher
Agricultural practices, if not managed correctly, can have a negative impact on receiving environments via waste disposal and discharge. In this study, a chicken slaughter facility on the rural outskirts of Sydney, Australia, has been identified as a possible source of persistent effluent discharge into a peri-urban catchment. Questions surrounding the facility's environmental management practices go back more than four decades. Despite there having never been a definitive determination of the facility's impact on local stream water quality, the New South Wales Environment Protection Authority (NSW EPA) has implemented numerous pollution reduction requirements to manage noise and water pollution at the slaughter facility...
April 19, 2017: Environmental Research
https://www.readbyqxmd.com/read/28432965/spatiotemporal-description-of-btex-volatile-organic-compounds-in-a-middle-eastern-megacity-tehran-study-of-exposure-prediction-for-environmental-health-research-tehran-sepehr
#16
Heresh Amini, Vahid Hosseini, Christian Schindler, Hossein Hassankhany, Masud Yunesian, Sarah B Henderson, Nino Künzli
The spatiotemporal variability of ambient volatile organic compounds (VOCs) in Tehran, Iran, is not well understood. Here we present the design, methods, and results of the Tehran Study of Exposure Prediction for Environmental Health Research (Tehran SEPEHR) on ambient concentrations of benzene, toluene, ethylbenzene, p-xylene, m-xylene, o-xylene (BTEX), and total BTEX. To date, this is the largest study of its kind in a low- and middle-income country and one of the largest globally. We measured BTEX concentrations at five reference sites and 174 distributed sites identified by a cluster analytic method...
April 19, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28432892/arsenic-chromium-molybdenum-and-selenium-geochemical-fractions-and-potential-mobilization-in-riverine-soil-profiles-originating-from-germany-and-egypt
#17
Sabry M Shaheen, Eilhann E Kwon, Jayanta K Biswas, Filip M G Tack, Yong Sik Ok, Jörg Rinklebe
The fractionation and potential mobilization of As, Cr, Mo, and Se in four floodplain soil profiles collected along the Nile (Egypt) and Wupper (Germany) Rivers were assessed using the BCR sequential extraction procedure. The concentrations of total and the geochemical fractions (acid soluble (F1), reducible (F2), oxidizable (F3), and residual (F4) fraction) of the elements were determined. The Wupper soils had the highest total concentrations (mg kg(-1)) of As (378) and Cr (2,797) while the Nile soils contained the highest total Mo (12) and Se (42)...
April 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28432637/polluted-pathways-mechanisms-of-metabolic-disruption-by-endocrine-disrupting-chemicals
#18
REVIEW
Mizuho S Mimoto, Angel Nadal, Robert M Sargis
PURPOSE OF REVIEW: Environmental toxicants are increasingly implicated in the global decline in metabolic health. Focusing on diabetes, herein, the molecular and cellular mechanisms by which metabolism disrupting chemicals (MDCs) impair energy homeostasis are discussed. RECENT FINDINGS: Emerging data implicate MDC perturbations in a variety of pathways as contributors to metabolic disease pathogenesis, with effects in diverse tissues regulating fuel utilization...
April 21, 2017: Current Environmental Health Reports
https://www.readbyqxmd.com/read/28432624/delivering-environmental-benefit-from-the-use-of-environmental-quality-standards-why-we-need-to-focus-on-implementation
#19
Graham Merrington, Adam Peters, Paul Whitehouse, Robin Clarke, Dan Merckel
The UK has adopted a broader approach to the introduction of Environmental Quality Standard (EQS) for the aquatic environment than many other jurisdictions around the world, with a greater focus on the implementation of scientifically derived standards. This follows the publication of a report by the Royal Commission on Environmental Pollution in 1998 which drew attention to the need to recognise that whilst an EQS is often just viewed as a numerical value, it also has other important characteristics that need to be recognised if it is to be a practical and effective regulatory tool...
April 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28432510/epilithic-diatom-assemblages-and-their-relationships-with-environmental-variables-in-the-nil%C3%A3-fer-stream-basin-bursa-turkey
#20
Didem Karacaoğlu, Nurhayat Dalkıran
Patterns of epilithic diatom species distribution in relation to environmental variables from 12 sampling sites on the main stream and some of its tributaries in the Nilüfer Stream Basin were determined using multivariate statistical techniques. The stream basin has been heavily influenced by anthropogenic effects. The upper part of the basin that is distant from pollution sources mostly has a spring water quality, while the lower part where the stream flows through the urban area and receives domestic and industrial wastewater has a quite low quality...
May 2017: Environmental Monitoring and Assessment
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