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https://www.readbyqxmd.com/read/28212462/climate-change-contaminant-interactions-in-marine-food-webs-towards-a-conceptual-framework
#1
Juan José Alava, William W L Cheung, Peter S Ross, Rashid U Sumaila
Climate change is reshaping the way in which contaminants move through the global environment, in large part by changing the chemistry of the oceans and affecting the physiology, health and feeding ecology of marine biota. Climate change-associated impacts on structure and function of marine food webs, with consequent changes in contaminant transport, fate and effects, is likely to have significant repercussions to those human populations that rely on fisheries resources for food, recreation or culture. Published studies on climate change-contaminant interactions with a focus on food web bioaccumulation were systematically reviewed to explore how climate change and ocean acidification may impact contaminant levels in marine food webs...
February 17, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28211332/3-3-dichlorobiphenyl-non-aroclor-pcb-11-as-a-marker-of-non-legacy-pcb-contamination-in-marine-species-comparison-between-antarctic-and-mediterranean-bivalves
#2
Sarah Pizzini, Chiara Sbicego, Fabiana Corami, Marco Grotti, Emanuele Magi, Tiziano Bonato, Giulio Cozzi, Carlo Barbante, Rossano Piazza
In this study the accumulation of the 3,3'-dichlorobiphenyl (PCB-11) in monitoring organisms from the Antarctic and Mediterranean coastal environments has been investigated. This lesser-known PCB congener, unrelated to the industrial use of commercial mixtures, continues to be generated and released into the environment mainly as an unintentional by-product of pigment manufacturing. Specimens of the filter-feeders Adamussium colbecki from Terra Nova Bay and of Mytilus galloprovincialis and Ruditapes philippinarum from the north-western Adriatic coasts were collected and analyzed for PCB-11 by Gas Chromatography coupled both to Low-Resolution and High-Resolution Mass Spectrometry (LRMS, HRMS)...
February 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28209826/complete-genome-sequence-of-the-polychlorinated-biphenyl-degrading-bacterium-pseudomonas-putida-kf715-nbrc-110667-isolated-from-biphenyl-contaminated-soil
#3
Hikaru Suenaga, Atsushi Yamazoe, Akira Hosoyama, Nobutada Kimura, Jun Hirose, Takahito Watanabe, Hidehiko Fujihara, Taiki Futagami, Masatoshi Goto, Kensuke Furukawa
Pseudomonas putida KF715 (NBRC 110667) utilizes biphenyl as a sole source of carbon and degrades polychlorinated biphenyls (PCBs). Here, we report a complete genome sequence of the KF715 strain, which comprises a circular chromosome and four plasmids. Biphenyl catabolic genes were located on the largest plasmid, pKF715A.
February 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28208015/tracing-the-biotransformation-of-pcbs-and-pbdes-in-common-carp-cyprinus-carpio-using-compound-specific-and-enantiomer-specific-stable-carbon-isotope-analysis
#4
Bin Tang, Xiaojun Luo, Yan-Hong Zeng, Bi Xian Mai
Compound-specific and enantiomer-specific carbon isotope composition was investigated in terms of biotransformation of polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) as well as atropisomers of chiral PCB congeners in fish by exposing common carp (Cyprinus carpio) to certain PCB and PBDE congeners. The calculated carbon isotope enrichment factors (εC) for PCBs 8, 18, and 45 were -1.99‰, -1.84‰, and -1.70‰, respectively, providing evidence for the metabolism of these congeners in fish...
February 16, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28202280/pollutant-content-in-marine-debris-and-characterization-by-thermal-decomposition
#5
M E Iñiguez, J A Conesa, A Fullana
Marine debris (MDs) produces a wide variety of negative environmental, economic, safety, health and cultural impacts. Most marine litter has a very low decomposition rate (plastics), leading to a gradual accumulation in the coastal and marine environment. Characterization of the MDs has been done in terms of their pollutant content: PAHs, ClBzs, ClPhs, BrPhs, PCDD/Fs and PCBs. The results show that MDs is not a very contaminated waste. Also, thermal decomposition of MDs materials has been studied in a thermobalance at different atmospheres and heating rates...
February 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28202225/persistent-organic-pollutants-and-diabetes-among-inuit-in-the-canadian-arctic
#6
Kavita Singh, Hing Man Chan
Type 2 diabetes is a chronic metabolic disease that is of increasing concern in Inuit communities. Behavioural factors such as physical inactivity and poor diet are well-known risk factors. Exposure to persistent organic pollutants (POPs) has emerged as an additional factor in the pathogenesis of diabetes. In this study, association between polychlorinated biphenyls (PCBs) and p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE) with diabetes in Canadian Inuit was examined. Data from the Adult Inuit Health Survey (2007-2008) of Inuit participants from the Canadian Arctic were analyzed...
February 12, 2017: Environment International
https://www.readbyqxmd.com/read/28202064/prediagnostic-plasma-concentrations-of-organochlorines-and-risk-of-b-cell-non-hodgkin-lymphoma-in-envirogenomarkers-a-nested-case-control-study
#7
Rachel S Kelly, Hannu Kiviranta, Ingvar A Bergdahl, Domenico Palli, Ann-Sofie Johansson, Maria Botsivali, Paolo Vineis, Roel Vermeulen, Soterios A Kyrtopoulos, Marc Chadeau-Hyam
BACKGROUND: Evidence suggests a largely environmental component to non-Hodgkin's lymphoma (NHL). Persistent organic pollutants (POPs) including polychlorinated biphenyls (PCBs), DDE and HCB have been repeatedly implicated, but the literature is inconsistent and a causal relationship remains to be determined. METHODS: The EnviroGenoMarkers study is nested within two prospective cohorts EPIC-Italy and the Northern Sweden Health and Disease Study. Six PCB congeners, DDE and HCB were measured in blood plasma samples provided at recruitment using gas-chromatography mass spectrometry...
February 16, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28199940/measurement-of-polyurethane-foam-air-partition-coefficients-for-semivolatile-organic-compounds-as-a-function-of-temperature-application-to-passive-air-sampler-monitoring
#8
Ana Paula Francisco, Tom Harner, Anita Eng
Polyurethane foam - air partition coefficients (KPUF-air) for 9 polycyclic aromatic hydrocarbons (PAHs), 10 alkyl-substituted PAHs, 4 organochlorine pesticides (OCPs) and dibenzothiophene were measured as a function of temperature over the range 5 °C-35 °C, using a generator column approach. Enthalpies of PUF-to-air transfer (ΔHPUF-air, kJ/mol) were determined from the slopes of log KPUF-air versus 1000/T (K), and have an average value of 81.2 ± 7.03 kJ/mol. The log KPUF-air values at 22 °C ranged from 4...
January 31, 2017: Chemosphere
https://www.readbyqxmd.com/read/28197871/monitoring-and-risk-assessment-of-polychlorinated-biphenyls-pcbs-in-agricultural-soil-from-two-industrialized-areas
#9
Leesun Kim, Jin-Woo Jeon, Ji-Young Son, Min-Kyu Park, Chul-Su Kim, Hwang-Ju Jeon, Tae-Hoon Nam, Kyeongsoon Kim, Byung-Jun Park, Sung-Deuk Choi, Sung-Eun Lee
For monitoring and risk assessment, levels and distributions of Σ29 PCBs in paddy soil samples collected from Gwangyang (10 sites) and Ulsan (20 sites), heavily industrialized cities in Korea, were investigated using high-resolution gas chromatography/high-resolution mass spectrometry. Overall, total concentrations of Σ29 PCBs in Gwangyang (216.4-978.6 pg g(-1) dw) and Ulsan (273.8-1824.1 pg g(-1) dw) were higher than those (106.6-222.6 pg g(-1) dw) in agricultural soil from Anseong in Korea. The TEQ (toxic equivalency) values from Gwangyang (0...
February 14, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28196346/organochlorine-pesticides-ocps-and-polychlorinated-biphenyls-pcbs-in-human-breast-milk-and-associated-health-risks-to-nursing-infants-in-northern-tanzania
#10
M H B Müller, A Polder, O B Brynildsrud, M Karimi, E Lie, W B Manyilizu, R H Mdegela, F Mokiti, M Murtadha, H E Nonga, J U Skaare, J L Lyche
This is the first study to report organochlorines (OCs), including chlorinated pesticides (OCPs) and polychlorinated biphenyls (PCBs) in human milk from Tanzania. The main aims of this study were to assess the level of contamination and the possible health risks related to OC exposure in nursing infants from the Northern parts of Tanzania. Ninety-five healthy mother-infant couples attending Mount Meru Regional Referral Hospital (MMRRH), Arusha, Tanzania, were assessed for associations between maternal/infant characteristics, i...
February 11, 2017: Environmental Research
https://www.readbyqxmd.com/read/28192994/cats-internal-exposure-to-selected-bfrs-and-organochlorines-correlated-to-house-dust-and-cat-food
#11
Jessica Norrgran Engdahl, Anders Bignert, Bernt Jones, Ioannis Athanassiadis, Ake Bergman, Jana Melinda Weiss
Pet cats may be used as a biomarker for assessing exposures to organohalogen compounds (OHCs) adsorbed to household dust in home environments. This study explores two exposure routes of OHCs, i) ingestion of OHCs via house dust and ii) via cat food. House dust from 17 Swedish homes and serum from the participating families' pet cats were collected and cat food purchased matching the diet reported. Paired samples of cat serum, house dust, and cat food were analysed for brominated flame retardants/natural products (PBDEs, BB-209, DBDPE, 2,4,6-TBP, OH-PBDEs) and organochlorines (PCBs, DDT, DDE, HCB, PCP)...
February 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28189073/lower-levels-of-persistent-organic-pollutants-metals-and-the-marine-omega-3-fatty-acid-dha-in-farmed-compared-to-wild-atlantic-salmon-salmo-salar
#12
Anne-Katrine Lundebye, Erik-Jan Lock, Josef D Rasinger, Ole Jakob Nøstbakken, Rita Hannisdal, Egil Karlsbakk, Vidar Wennevik, Abdullah S Madhun, Lise Madsen, Ingvild Eide Graff, Robin Ørnsrud
Contaminants and fatty acid levels in farmed- versus wild Atlantic salmon have been a hot topic of debate in terms of food safety. The present study determined dioxins (polychlorinated dibenzo-p-dioxin and dibenzofuran), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), organochlorine pesticides (OCPs), metals and fatty acids in wild and farmed Atlantic salmon. Contaminant levels of dioxins, PCBs, OCPs (DDT, dieldrin, lindane, chlordane, Mirex, and toxaphene), and mercury were higher in wild salmon than in farmed salmon, as were the concentrations of the essential elements selenium, copper, zinc and iron, and the marine omega-3 fatty acid docosahexaenoic acid (DHA)...
February 8, 2017: Environmental Research
https://www.readbyqxmd.com/read/28187385/paleo-environmental-record-of-polycyclic-aromatic-hydrocarbons-and-polychlorobiphenyls-at-the-peripheral-site-gv7-in-victoria-land-east-antarctica
#13
Stefania Giannarelli, Alessio Ceccarini, Chiara Tiribilli, Rachele Spreafico, Sandro Francesconi, Roger Fuoco
In this paper we investigated the presence of Polycyclic Aromatic Hydrocarbons and Polychlorobiphenyls in a 50-m deep snow/firn core collected at the peripheral site GV7 in East Antarctica during the 2013-2014 XXIX Italian expedition. The concentration depth profile was obtained on the basis of the total concentration of fourteen PAHs and seven PCBs individually determined by gas chromatography triple quadrupole mass spectrometry. Both classes of pollutants showed synchronized concentration vs time profile throughout the whole period of time covered by the snow/firn core (1892-2012)...
January 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/28187360/de-novo-assembly-of-the-ringed-seal-pusa-hispida-blubber-transcriptome-a-tool-that-enables-identification-of-molecular-health-indicators-associated-with-pcb-exposure
#14
Tanya M Brown, S Austin Hammond, Bahar Behsaz, Nik Veldhoen, Inanç Birol, Caren C Helbing
The ringed seal, Pusa hispida, is a keystone species in the Arctic marine ecosystem, and is proving a useful marine mammal for linking polychlorinated biphenyl (PCB) exposure to toxic injury. We report here the first de novo assembled transcriptome for the ringed seal (342,863 transcripts, of which 53% were annotated), which we then applied to a population of ringed seals exposed to a local PCB source in Arctic Labrador, Canada. We found an indication of energy metabolism imbalance in local ringed seals (n=4), and identified five significant gene transcript targets: plasminogen receptor (Plg-R(KT)), solute carrier family 25 member 43 receptor (Slc25a43), ankyrin repeat domain-containing protein 26-like receptor (Ankrd26), HIS30 (not yet annotated) and HIS16 (not yet annotated) that may represent indicators of PCB exposure and effects in marine mammals...
February 3, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28183064/quantitative-proteomics-analysis-reveals-perturbation-of-lipid-metabolic-pathways-in-the-liver-of-atlantic-cod-gadus-morhua-treated-with-pcb-153
#15
Fekadu Yadetie, Eystein Oveland, Anne Døskeland, Frode Berven, Anders Goksøyr, Odd André Karlsen
PCB 153 is one of the most abundant PCB congeners detected in biological samples. It is a persistent compound that is still present in the environment despite the ban on production and use of PCBs in the late 1970s. It has strong tendencies to bioaccumulate and biomagnify in biota, and studies have suggested that it is an endocrine and metabolic disruptor. In order to study mechanisms of toxicity, we exposed Atlantic cod (Gadus morhua) to various doses of PCB 153 (0, 0.5, 2 and 8mg/kg body weight) for two weeks and examined the effects on expression of liver proteins using label-free quantitative proteomics...
January 30, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28168980/characterisation-of-the-dynamics-of-organic-contaminants-n-alkanes-pahs-and-pcbs-in-a-coastal-area
#16
Agung Dhamar Syakti, Benjamin Oursel, Cedric Garnier, Pierre Doumenq
The dynamics of three classes of organic contaminants, namely n-alkanes, polycyclic aromatic hydrocarbons and polychlorinated biphenyls, were evaluated from the settled suspended particulate matter (SPM) of two wastewater treatment plant outlets (O1 and O2) at the Marseille coast. We used a 1-m-high Plexiglas settling column filled with 7L of seawater to determine the particles' settling rates, size distribution, and the extent of organic contaminants. Six classes of SPM (50-200μm particles size) were obtained from 15 fractions of 500-mL successive filtering samples ranging from 30s to 5days, including those in the tube wall...
February 3, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28167031/opinion-taking-phytoremediation-from-proven-technology-to-accepted-practice
#17
REVIEW
Karen E Gerhardt, Perry D Gerwing, Bruce M Greenberg
Phytoremediation is the use of plants to extract, immobilize, contain and/or degrade contaminants from soil, water or air. It can be an effective strategy for on site and/or in situ removal of various contaminants from soils, including petroleum hydrocarbons (PHC), polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), solvents (e.g., trichloroethylene [TCE]), munitions waste (e.g., 2,4,6-trinitrotoluene [TNT]), metal(loid)s, salt (NaCl) and radioisotopes. Commercial phytoremediation technologies appear to be underutilized globally...
March 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28165490/generation-of-pdgfr%C3%AE-cardioblasts-from-pluripotent-stem-cells
#18
Seon Pyo Hong, Sukhyun Song, Sung Woo Cho, Seungjoo Lee, Bong Ihn Koh, Hosung Bae, Kyun Hoo Kim, Jin-Sung Park, Hyo-Sang Do, Ilkyun Im, Hye Jin Heo, Tae Hee Ko, Jae-Hyeong Park, Jae Boum Youm, Seong-Jin Kim, Injune Kim, Jin Han, Yong-Mahn Han, Gou Young Koh
Isolating actively proliferating cardioblasts is the first crucial step for cardiac regeneration through cell implantation. However, the origin and identity of putative cardioblasts are still unclear. Here, we uncover a novel class of cardiac lineage cells, PDGFRα(+)Flk1(-) cardioblasts (PCBs), from mouse and human pluripotent stem cells induced using CsAYTE, a combination of the small molecules Cyclosporin A, the rho-associated coiled-coil kinase inhibitor Y27632, the antioxidant Trolox, and the ALK5 inhibitor EW7197...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28163111/a-compromised-liver-alters-polychlorinated-biphenyl-mediated-toxicity
#19
Banrida Wahlang, Jordan T Perkins, Michael C Petriello, Jessie B Hoffman, Arnold J Stromberg, Bernhard Hennig
Exposure to environmental toxicants namely polychlorinated biphenyls (PCBs) is correlated with multiple health disorders including liver and cardiovascular diseases. The liver is important for both xenobiotic and endobiotic metabolism. However, the responses of an injured liver to subsequent environmental insults has not been investigated. The current study aims to evaluate the role of a compromised liver in PCB-induced toxicity and define the implications on overall body homeostasis. Male C57Bl/6 mice were fed either an amino acid control diet (CD) or a methionine-choline deficient diet (MCD) during the 12-week study...
February 2, 2017: Toxicology
https://www.readbyqxmd.com/read/28161517/profiles-of-polychlorinated-biphenyls-pcbs-in-cement-kilns-co-processing-solid-waste
#20
Rong Jin, Jiayu Zhan, Guorui Liu, Yuyang Zhao, Minghui Zheng, Lili Yang, Mei Wang
Co-incineration of sewage sludge in cement kilns can be used for its disposal. In the present study, samples were collected from three cement production runs where sewage sludge and other wastes (e.g. municipal solid waste, waste acid and wet sewage sludge) were co-processed. The samples were analyzed for polychlorinated biphenyls (PCBs). The dioxin-like (dl)-PCB concentrations in the stack gases from run 1, 2, and 3 were 344.6, 548.7, and 104.3 pg m(-3), respectively. The toxic equivalency (TEQs) values for runs 1, 2, and 3 were 5...
January 24, 2017: Chemosphere
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