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Polychlorinated biphenyls

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https://www.readbyqxmd.com/read/29142003/disparities-in-environmental-exposures-to-endocrine-disrupting-chemicals-and-diabetes-risk-in-vulnerable-populations
#1
Daniel Ruiz, Marisol Becerra, Jyotsna S Jagai, Kerry Ard, Robert M Sargis
Burgeoning epidemiological, animal, and cellular data link environmental endocrine-disrupting chemicals (EDCs) to metabolic dysfunction. Disproportionate exposure to diabetes-associated EDCs may be an underappreciated contributor to disparities in metabolic disease risk. The burden of diabetes is not uniformly borne by American society; rather, this disease disproportionately affects certain populations, including African Americans, Latinos, and low-income individuals. The purpose of this study was to review the evidence linking unequal exposures to EDCs with racial, ethnic, and socioeconomic diabetes disparities in the U...
November 15, 2017: Diabetes Care
https://www.readbyqxmd.com/read/29141711/application-of-gas-chromatography-coupled-to-quadrupole-orbitrap-mass-spectrometry-for-pesticide-residue-analysis-in-cereals-and-feed-ingredients
#2
Marc Tienstra, Hans G J Mol
A method for residue analysis of pesticides and polychlorinated biphenyls in cereals and feed ingredients based on QuEChERS extraction, programmed temperature vaporizer large-volume injection, and GC with electron ionization (EI) quadrupole Orbitrap full-scan high-resolution MS (60 000 full width at half-maximum at m/z 200) has been developed. In addition to full-scan acquisition, simultaneous full-scan and selected-ion monitoring acquisition was used to improve detectability in incidental cases in which analytes coeluted with intense signals from coextractants...
November 16, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/29136567/persistent-organic-pollutants-in-red-and-white-blooded-high-antarctic-notothenioid-fish-from-the-remote-weddell-sea
#3
Anneli Strobel, Peter Schmid, Patricia Burkhardt-Holm, Helmut Segner, Markus Zennegg
It has been suggested that High-Antarctic waters, despite their remoteness from human activities, are impacted by anthropogenic pollution, and that the local biota are accumulating the contaminants. At present, no data exist on persistent organic pollutant (POP) body burdens for notothenioid fish inhabiting the High-Antarctic Weddell Sea. We determined the pollutant load in white muscle tissue of red- and white-blooded notothenoids from the Weddell Sea (Trematomus loennbergii and Chionodraco hamatus, respectively), and compared them to our previous measurements of POPs in Low-Antarctic notothenioids...
November 7, 2017: Chemosphere
https://www.readbyqxmd.com/read/29136534/investigating-the-potential-impact-of-polycyclic-aromatic-hydrocarbons-pahs-and-polychlorinated-biphenyls-pcbs-on-gene-biomarker-expression-and-global-dna-methylation-in-loggerhead-sea-turtles-caretta-caretta-from-the-adriatic-sea
#4
Paolo Cocci, Gilberto Mosconi, Luca Bracchetti, John Mark Nalocca, Emanuela Frapiccini, Mauro Marini, Giovanni Caprioli, Gianni Sagratini, Francesco Alessandro Palermo
Polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) are priority contaminants that bioaccumulate through the food webs and affect the biology of a variety of resident and migratory species, including sea turtles. Few studies have evaluated toxicological biomarkers of exposure to PAHs and PCBs in these animals. The present paper reports the results of an initial field study to quantify the association between plasma concentrations of PAHs/PCBs and whole blood cell expression of gene biomarkers in juvenile loggerhead sea turtles (Caretta caretta) rescued along the Italian coasts of the northern and central areas of the Adriatic Sea...
November 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29135489/endocrine-disrupters-and-pubertal-timing
#5
Louise C Greenspan, Mary M Lee
PURPOSE OF REVIEW: The current review summarizes recent epidemiologic data demonstrating the effects of endocrine disrupting compounds (EDCs) on the timing of puberty and highlights the complexity of understanding the interplay of environmental and genetic factors on pubertal timing. RECENT FINDINGS: In girls, there have been mixed results, with some exposures being associated with earlier timing of puberty, and some with later puberty. In boys, prepubertal exposures to nondioxin-like polychlorinated biphenyls accelerate puberty, whereas levels of insecticides, dioxin-like compounds, organochlorine pesticides, and lead delay puberty...
November 11, 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/29129429/serum-concentrations-of-organochlorine-compounds-and-predictors-of%C3%A2-exposure-in-children-living-in-agricultural-communities-from-south-eastern-spain
#6
B González-Alzaga, M Lacasaña, A F Hernández, J P Arrebola, I López-Flores, F Artacho-Cordón, J P Bonde, N Olea, C Aguilar-Garduño
BACKGROUND: Information on exposure levels to organochlorine compounds (OCs) in child population is limited, despite their greater vulnerability to the adverse health effects of these chemicals. OBJECTIVE: To determine serum concentrations of 10 OCs (including organochlorine pesticides and polychlorinated biphenyls -PCBs-) in children living in agricultural communities from Almería (South-Eastern Spain), and to identify the main predictors of exposure related to socio-economic characteristics, diet and lifestyle...
November 9, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29127935/determinants-of-prenatal-exposure-to-polybrominated-diphenyl-ethers-pbdes-among-urban-minority-infants-born-between-1998-and-2006
#7
Whitney J Cowell, Andreas Sjödin, Richard Jones, Ya Wang, Shuang Wang, Julie B Herbstman
Polybrominated diphenyl ethers (PBDEs) are environmentally persistent chemicals that structurally resemble legacy pollutants, such as polychlorinated biphenyls (PCBs). PBDEs were added to consumer products for over 30 years, before being phased out due to evidence of toxicity. We examined temporal changes in prenatal exposure to PBDEs, as well as other sources of variation. We measured PBDEs in umbilical cord plasma from 327 minority infants born in New York City between 1998 and 2006. We used linear regression to examine changes in concentrations over time and in relation to lifestyle characteristics collected during pregnancy...
November 8, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29127834/comparison-of-chlordecone-and-ndl-pcb-decontamination-dynamics-in-growing-male-kids-after-cessation-of-oral-exposure-is-there-a-potential-to-decrease-the-body-levels-of-these-pollutants-by-dietary-supplementation-of-activated-carbon-or-paraffin-oil
#8
Marie-Laure Lastel, Agnès Fournier, Stefan Jurjanz, Jean-Pierre Thomé, Célia Joaquim-Justo, Harry Archimède, Maurice Mahieu, Cyril Feidt, Guido Rychen
Sixteen weaned male Alpine kids (Capra hircus) were subjected to a 21-day oral daily exposure of 0.05 mg kg(-1) BW. d(-1) of chlordecone (CLD) and 0.30 μg kg(-1) BW. d(-1) of each non-dioxin-like polychlorinated biphenyls (NDL-PCBs, congeners 28, 52, 101, 138, 153 and 180). Four kids, identified as the CONTA group, were slaughtered at the end of the exposure, while the remaining animals (n = 12) were fed with specific diets for an additional 21-day decontamination period before slaughtering. Kids from the DECONTA (n = 4) group were fed a control diet, while those from the AC10% and PO8% group received pellets supplemented with 10% activated carbon (AC) and 8% paraffin oil (PO), respectively...
October 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/29126639/sedimentary-black-carbon-and-organochlorines-in-lesser-himalayan-region-of-pakistan-relationship-along-the-altitude
#9
Usman Ali, Andrew James Sweetman, Rahat Riaz, Jun Li, Gan Zhang, Kevin C Jones, Riffat Naseem Malik
Black carbon (BC) and total organic carbon (TOC) along with their relationship with organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) were assessed in Lesser Himalayan Region (LHR) in different altitudinal zones based on anthropogenic influence/source proximity under the scope of this study. Results revealed the concentrations of BC, TOC, OCPs and PCBs varied between 0.3 and 43.5mgg(-1), 1.7-65.4mgg(-1), 0.59-3.64ngg(-1) and 0.01-1.31ngg(-1), respectively. Spatial distribution trends have shown higher levels of OCPs and PCBs contamination near populated and urban areas along the altitude...
November 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29125581/occurrence-of-polychlorinated-dibenzo-p-dioxins-and-dibenzofurans-and-polychlorinated-biphenyls-in-fruit-and-vegetables-from-the-land-of-fires-area-of-southern-italy
#10
Mauro Esposito, Antonella De Roma, Stefania Cavallo, Gianfranco Diletti, Loredana Baldi, Giampiero Scortichini
The concentrations of polychlorinated dibenzo-p-concentrations dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) (PCDD/Fs), and polychlorinated biphenyls (PCBs) were determined in fruit and vegetables collected in farms located in the well-known "Land of Fires" area of Southern Italy, in an effort to learn more about the environmental pollution of this high-risk area due to illegal waste dumping and uncontrolled burning near cultivated fields. Concentrations were in the range 0.011-2.26 ng g(-1) for the six "indicator" non-dioxin-like PCBs (NDL-PCBs), and 0...
November 10, 2017: Toxics
https://www.readbyqxmd.com/read/29122355/current-status-of-organochlorine-pesticides-ocps-and-polychlorinated-biphenyls-pcbs-exposure-among-mothers-and-their-babies-of-korea-check-cohort-study
#11
Sooran Choi, Hai-Joong Kim, Sunmi Kim, Gyuyeon Choi, Sungjoo Kim, Jeongim Park, Soon-Sup Shim, Inae Lee, Sungkyoon Kim, Hyo-Bang Moon, Kyungho Choi, Jeong Jae Lee, Su Young Kim
Despite the global ban, organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) have been a persistent and significant environmental health issue worldwide. Prenatal exposure to these persistent organic pollutants (POPs) has been identified as a major route of exposure among developing fetuses and newborn infants. Among Children's Health and Environmental Health of Korea (CHECK) cohort population, pregnant females (n=148) and their matching newborn infants (n=117) recruited from four cities of Korea in 2011 were investigated...
November 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29108004/direct-and-indirect-effects-of-different-types-of-microplastics-on-freshwater-prey-corbicula-fluminea-and-their-predator-acipenser-transmontanus
#12
Chelsea M Rochman, J Mark Parnis, Mark A Browne, Sebastian Serrato, Eric J Reiner, Matthew Robson, Thomas Young, Miriam L Diamond, Swee J Teh
We examined whether environmentally relevant concentrations of different types of microplastics, with or without PCBs, directly affect freshwater prey and indirectly affect their predators. Asian clams (Corbicula fluminea) were exposed to environmentally relevant concentrations of polyethylene terephthalate (PET), polyethylene, polyvinylchloride (PVC) or polystyrene with and without polychlorinated biphenyls (PCBs) for 28 days. Their predators, white sturgeon (Acipenser transmontanus), were exposed to clams from each treatment for 28 days...
2017: PloS One
https://www.readbyqxmd.com/read/29107777/legacy-and-emerging-organohalogenated-contaminants-in-wild-edible-aquatic-organisms-implications-for-bioaccumulation-and-human-exposure
#13
Runxia Sun, Xiaojun Luo, Qing X Li, Tao Wang, Xiaobo Zheng, Pingan Peng, Bixian Mai
Highly industrialized and urbanized watersheds may receive various contaminants from anthropogenic activities. In this study, legacy and emerging organohalogenated contaminants (OHCs) were measured in edible wild aquatic organisms sampled from the Pearl River and Dongjiang River in a representative industrial and urban region in China. High concentrations of target contaminants were observed. The Pearl River exhibited higher concentrations of OHCs than the Dongjiang River due to high industrialization and urbanization...
November 3, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29107350/dynamics-of-persistent-organic-pollutants-in-obese-adolescents-during-weight-loss
#14
Govindan Malarvannan, Kim Van Hoorenbeeck, Ann Deguchtenaere, Stijn L Verhulst, Eveline Dirinck, Luc Van Gaal, Philippe G Jorens, Adrian Covaci
We have investigated the dynamics of various persistent organic pollutants (POPs) in the serum of 94 obese adolescents (34 boys and 60 girls: age range 11-19years) before (0M) and after 5months (5M) of undergoing weight loss treatment. Six groups of POPs, such as polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane and its metabolites (DDTs), chlordane compounds (CHLs), hexachlorocyclohexane isomers (HCHs), hexachlorobenzene (HCB) and polybrominated diphenyl ethers (PBDEs), were detected in all samples in the decreasing order of median levels: DDTs>PCBs>HCB>HCHs>CHLs>PBDEs...
January 2018: Environment International
https://www.readbyqxmd.com/read/29106481/blood-concentrations-of-persistent-organic-pollutants-and-unhealthy-metabolic-phenotypes-in-normal-weight-overweight-and-obese-individuals
#15
Magda Gasull, Conxa Castell, Natàlia Pallarès, Carme Miret, José Pumarega, María Te Llez-Plaza, Tomàs López, Jordi Salas-Salvadó, Duk-Hee Lee, Albert Goday, Miquel Porta
Factors underlying metabolic phenotypes, such as the metabolically healthy but obese phenotype, remain unclear. Differences in metabolic phenotypes -particularly, among individuals with a similar body mass index- could be related to concentrations of persistent organic pollutants (POPs). No studies have analyzed POPs and metabolic phenotypes in normal-weight persons. The authors investigated the relationships between serum concentrations of POPs and metabolic phenotypes in 860 normal-weight, overweight, and obese participants in the 2002 Catalan Health Interview Survey (Spain)...
June 30, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/29105341/application-of-probabilistic-risk-assessment-evaluating-remedial-alternatives-at-the-portland-harbor-superfund-site
#16
Betsy Ruffle, James Henderson, Clare Murphy-Hagan, Gemma Kirkwood, Frederick Wolf, Deborah A Edwards
A probabilistic risk assessment (PRA) was performed to evaluate the range of potential baseline and post-remedy health risks to fish consumers at the Portland Harbor Superfund Site (Site). The analysis focused on risks of consuming fish resident to the Site containing polychlorinated biphenyls (PCBs), as this exposure scenario and contaminant are the primary basis for USEPA's selected remedy per the January 2017 Record of Decision (ROD). The PRA used probability distributions fit to the same data sets used in the deterministic baseline human health risk assessment (BHHRA) as well as recent sediment and fish tissue data to evaluate the range and likelihood of current baseline cancer risks and non-cancer hazards for anglers...
November 3, 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/29099469/biomonitoring-of-metals-polybrominated-diphenyl-ethers-polychlorinated-biphenyls-persistent-pesticides-in-vietnamese-female-electronic-waste-recyclers
#17
Arnold Schecter, Jenevieve Kincaid, Hoang Trong Quynh, Joel Lanceta, Hanh Thi Tuyet Tran, Riley Crandall, William Shropshire, Linda S Birnbaum
OBJECTIVE: Electronic-waste is increasing.Its frequently conducted in developing countries.This is the first study to report metals, polybrominated diphenyl-ethers(PBDEs), polychlorinated biphenyls(PCBs), 2,2-bis(4-chlorophenyl)-1,1,1-trichloroethane(p,p'-DDT), and p,p'-DDE concentrations in female e-waste workers. METHODS: Female Vietnamese recyclers and non-recyclers were studied. Metals and halogenated organics were measured in blood and urine, and compared to levels in women in the US National Health and Nutrition Examination Survey(NHANES)...
November 2, 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29099124/variations-in-serum-concentrations-of-selected-organochlorines-among-delivering-women-in-argentina-the-emasar-study
#18
Solrunn Hansen, Evert Nieboer, Natalia Bravo, Inger Økland, Silvinia Matiocevich, Marisa Viviana Alvarez, Stein Tore Nilsen, Joan O Grimalt, Jon Øyvind Odland
The EMASAR study is the first study to describe the body burden of OCs in Argentinian women after delivery. In total, 698 maternal serum samples from Salta (n = 498) and Ushuaia (n = 200) were collected in 2011-2012 and analyzed for a total of 7 polychlorinated biphenyls (PCBs) and 12 pesticide-related compounds. Only 11 of the compounds had detection rates above 60% in one or both places. Compared with Ushuaian women, those from Salta exhibited higher lipid-adjusted concentrations of p,p'-DDE, p,p'-DDT, β-HCH, and PCB 118 (p ≤ 0...
November 3, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/29096434/reflection-of-stereoselectivity-during-the-uptake-and-acropetal-translocation-of-chiral-pcbs-in-plants-in-the-presence-of-copper
#19
Shaorui Wang, Chunling Luo, Dayi Zhang, Yan Wang, Mengke Song, Zhiqiang Yu, Yujie Wang, Gan Zhang
Plant uptake and acropetal translocation of polychlorinated biphenyls (PCBs) is a major concern, with many uncertainties, especially when plants are exposed to coexisting PCBs and metals. Studying atropisomer selectivity behavior is a well-proven method for identifying the biotransformation process of chiral PCBs in plants. This study investigated the uptake, translocation, and stereoselectivity of PCB95 and PCB136 (3 μg/L in hydroponics and 200 μg/kg in pot experiment) by monocot corn and dicot sunflower after copper (Cu) exposure (50 μmol/L in hydroponics and 400 mg/kg in pot experiment)...
November 16, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29096317/maternal-and-paternal-serum-concentrations-of-persistent-organic-pollutants-and-the-secondary-sex-ratio-a-population-based-preconception-cohort-study
#20
Jisuk Bae, Sungduk Kim, Dana Boyd Barr, Germaine M Buck Louis
Recent declines in the secondary sex ratio (SSR), defined as the ratio of males to females at birth, in some industrialized countries may be attributed to exposure to environmental toxicants such as persistent organic pollutants (POPs). This study aimed to evaluate the association of couples' preconception exposure to POPs with the SSR. The study cohort comprised 235 couples who were enrolled in the Longitudinal Investigation of Fertility and the Environment (LIFE) Study between 2005 and 2009 prior to conception and prospectively followed through delivery of a singleton birth...
October 30, 2017: Environmental Research
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