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https://www.readbyqxmd.com/read/28527383/tributyltin-and-triphenyltin-exposure-promotes-in-vitro-adipogenic-differentiation-but-alters-the-adipocyte-phenotype-in-rainbow-trout
#1
Esmail Lutfi, Natàlia Riera-Heredia, Marlon Córdoba, Cinta Porte, Joaquim Gutiérrez, Encarnación Capilla, Isabel Navarro
Numerous environmental pollutants have been identified as potential obesogenic compounds affecting endocrine signaling and lipid homeostasis. Among them, well-known organotins such as tributyltin (TBT) and triphenyltin (TPT), can be found in significant concentrations in aquatic environments. The aim of the present study was to investigate in vitro the effects of TBT and TPT on the development and lipid metabolism of rainbow trout (Onchorynchus mykiss) primary cultured adipocytes. Results showed that TBT and TPT induced lipid accumulation and slightly enhanced peroxisome proliferator-activated receptor gamma (PPARγ) and CCAAT enhancer binding protein alpha (C/EBPα) protein expression when compared to a control, both in the presence or absence of lipid mixture...
May 8, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28527324/source-characterization-of-urban-particles-from-meat-smoking-activities-in-chongqing-china-using-single-particle-aerosol-mass-spectrometry
#2
Yang Chen, John C Wenger, Fumo Yang, Junji Cao, Rujin Huang, Guangming Shi, Shumin Zhang, Mi Tian, Huanbo Wang
A Single Particle Aerosol Mass Spectrometer (SPAMS) was deployed in the urban area of Chongqing to characterize the particles present during a severe particulate pollution event that occurred in winter 2014-2015. The measurements were made at a time when residents engaged in traditional outdoor meat smoking activities to preserve meat before the Chinese Spring Festival. The measurement period was predominantly characterized by stagnant weather conditions, highly elevated levels of PM2.5, and low visibility...
May 17, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28527321/short-term-exposure-to-gold-nanoparticle-suspension-impairs-swimming-behavior-in-a-widespread-calanoid-copepod
#3
François-Gaël Michalec, Markus Holzner, Alexandre Barras, Anne-Sophie Lacoste, Loïc Brunet, Jae-Seong Lee, Christian Slomianny, Rabah Boukherroub, Sami Souissi
Calanoid copepods play an important role in the functioning of marine and brackish ecosystems. Information is scarce on the behavioral toxicity of engineered nanoparticles to these abundant planktonic organisms. We assessed the effects of short-term exposure to nonfunctionalized gold nanoparticles on the swimming behavior of the widespread estuarine copepod Eurytemora affinis. By means of three-dimensional particle tracking velocimetry, we reconstructed the trajectories of males, ovigerous and non-ovigerous females...
May 17, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28527212/apolipoprotein-e4-gender-body-mass-index-inflammation-insulin-resistance-and-air-pollution-interactions-recipe-for-alzheimer-s-disease-development-in-mexico-city-young-females
#4
Lilian Calderón-Garcidueñas, Suzanne M de la Monte
Given the epidemiological trends of increasing Alzheimer's disease (AD) and growing evidence that exposure and lifestyle factors contribute to AD risk and pathogenesis, attention should be paid to variables such as air pollution, in order to reduce rates of cognitive decline and dementia. Exposure to fine particulate matter (PM2.5) and ozone (O3) above the US EPA standards is associated with AD risk. Mexico City children experienced pre- and postnatal high exposures to PM2.5, O3, combustion-derived iron-rich nanoparticles, metals, polycyclic aromatic hydrocarbons, and endotoxins...
May 17, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28527141/rice-agriculture-impacts-catchment-hydrographic-patterns-and-nitrogen-export-characteristics-in-subtropical-central-china-a-paired-catchment-study
#5
Yi Wang, Xinliang Liu, Hua Wang, Yong Li, Yuyuan Li, Feng Liu, Runlin Xiao, Jianlin Shen, Jinshui Wu
Increased nitrogen (N) concentrations in water bodies have highlighted issues regarding nutrient pollution in agricultural catchments. In this study, the ammonium-N (NH4(+)-N), nitrate-N (NO3(-)-N), and total N (TN) concentrations were observed in the stream water and groundwater of two contrasting catchments (named Tuojia and Jianshan) in subtropical central China from 2010 to 2014, to determine the rice agriculture impacts on the hydrographic patterns, and N export characteristics of the catchments. The results suggested that greater amounts of stream flow (523...
May 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28527102/studies-of-environmental-risk-factors-in-amyotrophic-lateral-sclerosis-als-and-a-phase-i-clinical-trial-of-l-serine
#6
Walter G Bradley, R X Miller, T D Levine, E W Stommel, P A Cox
β-N-Methylamino-L-alanine (BMAA) has been linked to Guam ALS/PDC and shown to produce neurodegeneration in vitro and in vivo (Drosophila, mice, rats, primates). BMAA misincorporation into neuroproteins produces protein misfolding and is inhibited by L-serine. Case-control studies in Northern New England indicate that living near to water-bodies with cyanobacterial blooms increases the risk of developing amyotrophic lateral sclerosis (ALS). The distribution of addresses of ALS cases in New Hampshire, Vermont, and Florida was compared to that of controls...
May 19, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28526659/framework-for-assessing-causality-of-air-pollution-related-health-effects-for-reviews-of-the-national-ambient-air-quality-standards
#7
Elizabeth Oesterling Owens, Molini M Patel, Ellen Kirrane, Thomas C Long, James Brown, Ila Cote, Mary A Ross, Steven J Dutton
To inform regulatory decisions on the risk due to exposure to ambient air pollution, consistent and transparent communication of the scientific evidence is essential. The United States Environmental Protection Agency (U.S. EPA) develops the Integrated Science Assessment (ISA), which contains evaluations of the policy-relevant science on the effects of criteria air pollutants and conveys critical science judgments to inform decisions on the National Ambient Air Quality Standards. This article discusses the approach and causal framework used in the ISAs to evaluate and integrate various lines of scientific evidence and draw conclusions about the causal nature of air pollution-induced health effects...
May 16, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28526320/mercury-exposure-induces-cytoskeleton-disruption-and-loss-of-renal-function-through-epigenetic-modulation-of-mmp9-expression
#8
Hafizurrahman Khan, Radha Dutt Singh, Ratnakar Tiwari, Siddhartha Gangopadhyay, Somendu Kumar Roy, Dhirendra Singh, Vikas Srivastava
Mercury is one of the major heavy metal pollutants occurring in elemental, inorganic and organic forms. Due to ban on most inorganic mercury containing products, human exposure to mercury generally occurs as methylmercury (MeHg) by consumption of contaminated fish and other sea food. Animal and epidemiological studies indicate that MeHg affects neural and renal function. Our study is focused on nephrotoxic potential of MeHg. In this study, we have shown for the first time how MeHg could epigenetically modulate matrix metalloproteinase 9(MMP9) to promote nephrotoxicity using an animal model of sub chronic MeHg exposure...
May 16, 2017: Toxicology
https://www.readbyqxmd.com/read/28526282/an-oleaginous-filamentous-microalgae-tribonema-minus-exhibits-high-removing-potential-of-industrial-phenol-contaminants
#9
Tianyou Cheng, Wei Zhang, Wenlei Zhang, Guanhua Yuan, Hui Wang, Tianzhong Liu
Discharge of industrial phenol contaminants could cause great harm on natural environment. Through oleaginous microalgae cultivation in phenolic wastewater, pollutants can be phototrophically biofixed into biomass as feedstock for bioenergy production. It was firstly reported in this study that, an oleaginous filamentous microalgae Tribonema minus exhibited strong environmental phenol removal ability. T. minus filaments showed 449.46mgg(-1) of phenol-uptake capacity, obviously higher than those strains with low phenol absorption such as Scenedesmus dimorphus...
May 10, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28526200/nickel-and-ocean-warming-affect-scleractinian-coral-growth
#10
T Biscéré, A Lorrain, R Rodolfo-Metalpa, A Gilbert, A Wright, C Devissi, C Peignon, R Farman, E Duvieilbourg, C Payri, F Houlbrèque
The sensitivity of corals and their Symbiodinium to warming has been extensively documented; however very few studies considered that anthropogenic inputs such as metal pollution have already an impact on many fringing reefs. Thus, today, nickel releases are common in coastal ecosystems. In this study, two major reef-building species Acropora muricata and Pocillopora damicornis were exposed in situ to ambient and moderate nickel concentrations on a short-term period (1h) using benthic chamber experiments. Simultaneously, we tested in laboratory conditions the combined effects of a chronic exposure (8weeks) to moderate nickel concentrations and ocean warming on A...
May 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28526198/anthropogenic-contamination-of-portuguese-coastal-waters-during-the-bathing-season-assessment-using-caffeine-as-a-chemical-marker
#11
Paula Paíga, Cristina Delerue-Matos
Bathing water quality standards are based on international standards and legislations. However, in Europe, only the microbiological parameters are to be accomplished. Recent research has focused on chemical indicators that can determine human fecal contaminants in water. Therefore, the suitability of caffeine as a chemical marker of seawater pollution in the north Portuguese coastal area in the Atlantic Ocean during the bathing season was assessed in this study. The quality of water from the coasts of five cities was monitored...
May 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28526013/human-biomonitoring-from-an-environmental-justice-perspective-supporting-study-participation-of-women-of-turkish-and-moroccan-descent
#12
Bert Morrens, Elly Den Hond, Greet Schoeters, Dries Coertjens, Ann Colles, Tim S Nawrot, Willy Baeyens, Stefaan De Henauw, Vera Nelen, Ilse Loots
BACKGROUND: Environmental justice research shows how socially disadvantaged groups are more exposed and more vulnerable to environmental pollution. At the same time, these groups are less represented and, thus, less visible in biomedical studies. This socioeconomic participation bias is a form of environmental injustice within research practice itself. METHODS: We designed, implemented and evaluated a targeted recruitment strategy to enhance the participation of socially disadvantaged pregnant women in a human biomonitoring study in Belgium...
May 19, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28525895/dietary-zno-nanoparticles-alters-intestinal-microbiota-and-inflammation-response-in-weaned-piglets
#13
Tian Xia, Wenqing Lai, Miaomiao Han, Meng Han, Xi Ma, Liying Zhang
The present study was carried out to determine whether low dose of zinc oxide nanoparticles (Nano-ZnO) could serve as a potential substitute of pharmacological dose of traditional ZnO in weaned piglets. 180 crossbred weaning piglets were randomly assigned to 3 treatments. Experimental animals were fed basal diet supplemented with 0 mg Zn/kg (Control), 600 mg Zn/kg (Nano-ZnO) and 2000 mg Zn/kg (ZnO) for 14 days. On day 14 after weaning, the piglets fed Nano-ZnO did not differ from those fed traditional ZnO in growth performance and jejunal morphology, while Nano-ZnO treatment could significantly alleviate the incidence of diarrhea (P < 0...
May 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28525872/levels-and-temporal-trends-of-organochlorine-contaminants-in-mussels-from-spanish-mediterranean-waters
#14
Juan A Campillo, Beatriz Fernández, Víctor García, José Benedicto, Víctor M León
The levels and trends of organochlorine contaminants were determined along the Spanish Mediterranean coast from 2000 to 2013 using mussel, Mytilus galloprovincialis, as bioindicator species. The highest levels of PCBs and DDTs were found at industrial and urban locations, and at areas under the influence of the mouth of major rivers. Dieldrin and t-NNC were commonly detected, while HCHs, aldrin, isodrin, endrin and HCB were at levels not detectable at many areas. Significant declines on the levels of DDTs were observed at most of the areas studied...
May 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/28525870/effective-swine-wastewater-treatment-by-combining-microbial-fuel-cells-with-flocculation
#15
Weijun Ding, Shaoan Cheng, Liliang Yu, Haobin Huang
Microbial fuel cells (MFCs) provide a cost-effective method for treating swine wastewater treatment and simultaneously producing electricity, yet they need to be combined with other wastewater treatment processes to improve the effluent water quality. In this paper, we constructed single-chamber air-cathode MFCs with a compact configuration for nitrogen and COD removal and high electricity production and combined them with a low-cost flocculation process to discharge higher quality wastewater. We show that MFCs could remove ammonia at a rate of 269...
May 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28525860/a-comparison-of-individual-exposure-perception-and-acceptable-levels-of-pm2-5-with-air-pollution-policy-objectives-in-china
#16
Lei Huang, Chao Rao, Tsering Jan van der Kuijp, Jun Bi, Yang Liu
Atmospheric pollution has emerged as a major public health issue in China. Public perception and acceptable risk levels of air pollution can prompt individual behavioral changes and play a major role in the public's response to health risks. Therefore, to explore these responses and evaluate what constitutes publicly acceptable concentrations of fine particulate matter (PM2.5), questionnaire surveys were conducted in three representative cities of China: Beijing, Nanjing, and Guangzhou. Great differences in public risk perception were revealed...
May 16, 2017: Environmental Research
https://www.readbyqxmd.com/read/28525859/the-association-between-ambient-inhalable-particulate-matter-and-the-disease-burden-of-respiratory-disease-an-ecological-study-based-on-ten-year-time-series-data-in-tianjin-china
#17
Qiang Zeng, Ziting Wu, Guohong Jiang, Xiaoyin Wu, Pei Li, Yang Ni, Xiuqin Xiong, Xinyan Wang, Parasat, Guoxing Li, Xiaochuan Pan
There is limited evidence available worldwide about the quantitative relationship between particulate matter with an aerodynamic diameter of less than 10µm (PM10) and years of life lost (YLL) caused by respiratory diseases (RD), especially regarding long-term time series data. We investigated the quantitative exposure-response association between PM10 and the disease burden of RD. We obtained the daily concentration of ambient pollutants (PM10, nitrogen dioxide and sulphur dioxide), temperature and relative humidity data, as well as the death monitoring data from 2001 to 2010 in Tianjin...
May 16, 2017: Environmental Research
https://www.readbyqxmd.com/read/28525857/industrial-air-emissions-and-proximity-to-major-industrial-emitters-are-associated-with-anti-citrullinated-protein-antibodies
#18
Sasha Bernatsky, Audrey Smargiassi, Lawrence Joseph, Phillip Awadalla, Ines Colmegna, Marie Hudson, Marvin J Fritzler
OBJECTIVE: To determine the association of anti-citrullinated antibodies (ACPA) with the ambient air pollutants fine particulate matter (PM2.5) and sulfur dioxide (SO2). METHODS: The CARTaGENE first-wave cohort includes 20,000 general population subjects from Quebec (Canada). On a sample of unselected 1586 subjects, we determined serum, ACPA and performed multivariable logistic regression, for the outcome of positive ACPA, assessing for independent effects of our air pollution variables, adjusting for age, sex, smoking, and French Canadian origin...
May 16, 2017: Environmental Research
https://www.readbyqxmd.com/read/28525817/comparative-analysis-of-element-concentrations-and-translocation-in-three-wetland-congener-plants-typha-domingensis-typha-latifolia-and-typha-angustifolia
#19
Giuseppe Bonanno, Giuseppe Luigi Cirelli
This study analyzed the concentrations and distributions of Al, As, Cd, Cr, Cu, Hg, Mn, Ni, Pb and Zn in three different cattail species growing spontaneously in a natural wetland subject to municipal wastewater and metal contamination. The cattail species included Typha domingensis, T. latifolia and T. angustifolia. Results showed that all Typha species have similar element concentrations in roots, rhizomes and leaves, and similar element mobility from sediments to roots and from roots to leaves. This study corroborated three patterns of Typha species growing in metal contaminated environments: high tolerance to toxic conditions, bulk element concentrations in roots, and restricted element translocation from roots to leaves...
May 16, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28525815/an-integrated-approach-to-study-the-risk-from-landfill-soil-of-delhi-chemical-analyses-in-vitro-assays-and-human-risk-assessment
#20
Swati, Pooja Ghosh, Indu Shekhar Thakur
In the present study, landfill soil of three municipal solid waste landfill sites of Delhi, India were toxico-chemically analyzed for human risk assessment as inadequate information is available on the possible health effects of the contaminants present in landfill soil. The landfill soil samples were prepared for analyzing heavy metal concentration, organic contaminants and toxicity analysis separately. Composite soil sample collected from three landfill sites were analyzed for heavy metal by ICP-AES. Metal concentration so obtained was below the permissible limit of soil but higher than the set limits for effluent...
May 16, 2017: Ecotoxicology and Environmental Safety
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