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environmental pollutions

Zhen Zhang, Shuaibing Dong, Daohan Ge, Nuanfei Zhu, Kun Wang, Gangbing Zhu, Wanzhen Xu, Hai Xu
Based on our produced polyclonal antibody capable of recognizing tetrabromobisphenol A bis(2-hydroxyethyl) ether (TBBPA-DHEE) and tetrabromobisphenol A mono(hydroxyethyl) ether (TBBPA-MHEE) (cross-reactivity, 100% for TBBPA DHEE; 98.7% for TBBPA MHEE), an important derivative and byproduct of tetrabromobisphenol A (TBBPA), respectively, a novel ultrasensitive competitive immunosensor was established using an electrochemical impedimetric strategy for the simultaneous detection of both chemicals. A significantly amplified electrochemical impedance spectroscopy (EIS) for quantitative target analysis was obtained through (i) the biocatalytic precipitation of 4-chloro-1-naphthol (CN) on the electrode surface triggered by horseradish peroxidase (HRP) and (ii) increased amounts of the enzyme with HRP-loaded silica nanoparticles carrying poly-brushes (SiO2@PAA) as labels, achieving a remarkable improvement in catalytic performance...
January 17, 2018: Biosensors & Bioelectronics
Ying-Juan Huang, Li Zhang, Lan-Ying Shi, Yuan-Yuan Wang, Yu-Bin Yang, Bin Ke, Ting-Ying Zhang, Jian Qin
OBJECTIVE: Acrolein, a highly reactive unsaturated aldehyde, is a ubiquitous environmental pollutant and oxidative damage induced by acrolein is hypothesized to involve in the etiology of Alzheimer's disease (AD). Calorie restriction (CR) is the only non-genetic intervention that has consistently been verified to retard aging by ameliorating oxidative stress. Therefore, we investigated the effects of CR on acrolein-induced neurotoxicity in Sprague-Dawley (SD) rats. METHODS: A total of 45 weaned and specific-pathogen-free SD rats (male, weighing 180-220 g) were gavage-fed with acrolein (2...
January 17, 2018: Neurotoxicology
Ryusuke Ae, Yosikazu Nakamura, Hiroshi Tada, Yumi Kono, Eiko Matsui, Kazuo Itabashi, Masanori Ogawa, Teppei Sasahara, Yuri Matsubara, Takao Kojo, Kazuhiko Kotani, Nobuko Makino, Yasuko Aoyama, Takashi Sano, Koki Kosami, Maho Yamashita, Akira Oka
BACKGROUND: Globally, few published studies have tracked the temporal trend of dioxin levels in the human body since 2000. This study describes the annual trend of dioxin levels in human breast milk in Japanese mothers from 1998 through 2015. METHODS: An observational study was conducted from 1998 through 2015. Participants were 1,194 healthy mothers following their first delivery who were recruited annually in Japan. Breast milk samples obtained from participants were analyzed using gas chromatography and mass spectrometry for dioxins, including polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and coplanar polychlorinated biphenyls (PCBs)...
January 20, 2018: Journal of Epidemiology
S Engels, L S R Z Fong, Q Chen, M J Leng, S McGowan, M Idris, N L Rose, M S Ruslan, D Taylor, H Yang
Fossil fuel combustion leads to increased levels of air pollution, which negatively affects human health as well as the environment. Documented data for Southeast Asia (SEA) show a strong increase in fossil fuel consumption since 1980, but information on coal and oil combustion before 1980 is not widely available. Spheroidal carbonaceous particles (SCPs) and heavy metals, such as mercury (Hg), are emitted as by-products of fossil fuel combustion and may accumulate in sediments following atmospheric fallout...
January 17, 2018: Environmental Pollution
Xi Ling, Wang Yang, Peng Zou, Guowei Zhang, Zhi Wang, Xi Zhang, Hongqiang Chen, Kaige Peng, Fei Han, Jinyi Liu, Jia Cao, Lin Ao
Increasing evidence shows that impaired telomere function is associated with male infertility, and various environmental factors are believed to play a pivotal role in telomerase deficiency and telomere shortening. Benzo[a]pyrene (B[a]P), a ubiquitous pollutant of polycyclic aromatic hydrocarbons (PAHs), can act as a reproductive toxicant; however, the adverse effect of B[a]P on telomeres in male reproductive cells has never been studied, and the related mechanisms remain unclear. In this study, we explored the effects of benzo[a]pyrene-7,8-dihydrodiol-9,10-epoxide (BPDE), the active metabolite of B[a]P, on telomere dysfunction in mouse spermatocyte-derived cells (GC-2) and also the potential role of telomerase in BPDE-induced spermatogenic cell damage...
January 16, 2018: Environmental Pollution
Daniele Santi, Elisa Magnani, Marco Michelangeli, Roberto Grassi, Barbara Vecchi, Gioia Pedroni, Laura Roli, Maria Cristina De Santis, Enrica Baraldi, Monica Setti, Tommaso Trenti, Manuela Simoni
BACKGROUND: Male fertility is progressively declining in many developed countries, but the relationship between male infertility and environmental factors is still unclear. OBJECTIVES: To assess the influence of environmental temperature and air pollution on semen parameters, using a big-data approach. METHODS: A big data analysis of parameters related to 5131 men, living in a province of Northern Italy and undergoing semen analyses between January 2010 and March 2016 was performed...
January 17, 2018: Environmental Pollution
C Pellacani, L G Costa
Human exposure to neurotoxic pollutants (e.g. metals, pesticides and other chemicals) is recognized as a key risk factor in the pathogenesis of neurodegenerative disorders. Emerging evidence indicates that an alteration in autophagic pathways may be correlated with the onset of the neurotoxicity resulting from chronic exposure to these pollutants. In fact, autophagy is a natural process that permits to preserving cell homeostasis, through the seizure and degradation of the cytosolic damaged elements. However, when an excessive level of intracellular damage is reached, the autophagic process may also induce cell death...
January 16, 2018: Environmental Pollution
Alex E Gbaguidi, Zifa Wang, Wei Wang, Ting Yang, Huan-Sheng Chen
Strong acid rain was recently observed over Northeastern China, particularly in summer in Liaoning Province where alkaline dust largely neutralized acids in the past. This seems to be related to the regional transboundary pollution and poses new challenges in acid rain control scheme in China. In order to delve into the regional transport impact, and quantify its potential contributions to such an "eruption" of acid rain over Liaoning, this paper employs an online source tagging model in coupling with the Nested Air Quality Prediction Modeling System (NAQPMS)...
January 16, 2018: Environmental Pollution
Antoine Boyer, Paris Ning, Doug Killey, Martin Klukas, David Rowan, Andre J Simpson, Elodie Passeport
Strontium (Sr) is a chemical element that is often used as a tracer in hydrogeochemical studies, and is ubiquitously distributed as a radioactive contaminant in nuclear sites in the form of strontium-90 (Sr-90). At the interface between groundwater and surface water, wetlands possess unique hydrogeochemical properties whose impact on Sr transport has not been investigated thoroughly. In this study, the adsorption and desorption of Sr was investigated on six natural wetland substrates and two mixes of exogenous media and wetland sediment: winter and summer wetland sediments, decayed cattails, wood, leaf litter, moss, bone charcoal, and clinoptilolite...
January 11, 2018: Water Research
Farrokhzad Zeinali, Ahmad Homaei, Ehsan Kamrani, Seema Patel
Superoxide dismutase (SOD) is the pivotal antioxidant enzyme that defends organisms against the oxidative stresses of superoxide radicals. In this experimental study, purification of SOD from the leaves of Avicennia marina (grey mangrove or white mangrove) from the family Acanthaceae, located in Sirik mangrove forest on the shore of the Gulf of Oman was performed, for the intended characterization of SOD. The Sirik AmSOD (A. marina SOD) expressed optimum activity in the pH range of 6-9 with the maximum activity at pH 8...
January 16, 2018: Ecotoxicology and Environmental Safety
Michael C Petriello, Richard Charnigo, Manjula Sunkara, Sony Soman, Marian Pavuk, Linda Birnbaum, Andrew J Morris, Bernhard Hennig
Trimethylamine N-oxide (TMAO) is a diet and gut microbiota-derived metabolite that has been linked to cardiovascular disease risk in human studies and animal models. TMAO levels show wide inter and intra individual variability in humans that can likely be accounted for by multiple factors including diet, the gut microbiota, levels of the TMAO generating liver enzyme Flavin-containing monooxygenase 3 (FMO3) and kidney function. We recently found that dioxin-like (DL) environmental pollutants increased FMO3 expression to elevate circulating diet-derived TMAO in mice, suggesting that exposure to this class of pollutants might also contribute to inter-individual variability in circulating TMAO levels in humans...
January 16, 2018: Environmental Research
Abdessattar Saoudi, Clémentine Dereumeaux, Sarah Goria, Bénédicte Berat, Serge Brunel, Marie Pecheux, Perrine de Crouy-Chanel, Abdelkrim Zeghnoun, Loïc Rambaud, Vérène Wagner, Alain le Tertre, Clémence Fillol, Stéphanie Vandentorren, Laurence Guldner
BACKGROUND: As a result of the ban on lead in gasoline on 2nd January 2000, the French population's exposure to lead has decreased in recent years. However, because of the acknowledged harmful cognitive effects of lead even at low levels, lead exposure remains a major public health issue. In France, few biomonitoring data are available for exposure to lead in pregnant women and newborn. The purpose of the perinatal component of the French human biomonitoring (HBM) program was to describe levels of various biomarkers of exposure to several environmental pollutants, including lead, among mother-baby pairs...
January 11, 2018: International Journal of Hygiene and Environmental Health
Moncie V Wright, Cole W Matson, Leanne S Baker, Benjamin T Castellon, Preston S Watkins, Ryan S King
A 5-week mesocosm experiment was conducted to investigate the toxicity of titanium dioxide nanoparticles (TiO2NPs) to periphytic algae in an environmentally-realistic scenario. We used outdoor experimental streams to simulate the characteristics of central Texas streams receiving large discharges of wastewater treatment plant effluent during prolonged periods of drought. The streams were continually dosed and maintained at two concentrations. The first represents an environmentally relevant concentration of 0...
January 16, 2018: Science of the Total Environment
Xiaoyi Wang, Yulong Liao, Huaiwu Zhang, Tianlong Wen, Dainan Zhang, Yuanxun Li, Mingzhen Liu, Faming Li, Qiye Wen, Zhiyong Zhong, Xingtian Yin
Fe3O4 nanoplates were fabricated by an anodic oxidation process and a subsequent water assisted crystallization process at low temperature, which was found to be very efficient and environmentally friendly. The as-prepared Fe3O4 nanoplates have hexagonal outlines with a thickness of about 20 nm. Tremendous grooves were distributed on the entire surfaces of the nanoplates, making the two-dimension nanoplates have a unique 3D morphology. Transmission electron microscopy results confirmed that the single-crystalline nature of the nanoplates was well maintained...
January 19, 2018: ACS Applied Materials & Interfaces
Zhengying Tan, Senlin Lu, Hui Zhao, Xiao Kai, Peng Jiaxian, Myat Sandar Win, Shang Yu, Shinich Yonemochi, Qingyue Wang
As an accumulation of solid organic and inorganic pollutant particles on outdoor ground surfaces, road dust is an important carrier of heavy metal contaminants and can be a valuable medium for characterizing urban environmental quality. Because the dusts can be an important source of atmospheric particles and take impact on human health, the aim of this study described in detail the mineralogical characteristics, morphology, and heavy metal content of road dust from Xuanwei and Fuyuan, locations with high lung cancer incidence...
January 19, 2018: Environmental Geochemistry and Health
Shu Hua Zhai, Gen Shen Yin, Xiao Hong Yang
Ottelia acuminata is an edible aquatic plant species that is endemic to southwestern China. This plant has experienced habitat degradation resulting from environmental change and extensive human disturbance. Determining the genetic variation and genetic structure of O. acuminata populations could help develop strategies to collect, evaluate, utilize and conserve the species. To this end, we genotyped 183 individuals sampled throughout the species distribution using twelve novel nuclear microsatellite loci (nSSRs)...
January 19, 2018: Biochemical Genetics
Allison M Leach, James N Galloway, Elizabeth A Castner, Jennifer Andrews, Neil Leary, John D Aber
The development of nitrogen footprint tools has allowed a range of entities to calculate and reduce their contribution to nitrogen pollution, but these tools represent just one aspect of environmental pollution. For example, institutions have been calculating their carbon footprints to track and manage their greenhouse gas emissions for over a decade. This article introduces an integrated tool that institutions can use to calculate, track, and manage their nitrogen and carbon footprints together. It presents the methodology for the combined tool, describes several metrics for comparing institution nitrogen and carbon footprint results, and discusses management strategies that reduce both the nitrogen and carbon footprints...
April 1, 2017: Sustainability (New Rochelle)
Joo Hyun Sung, Inbo Oh, Ahra Kim, Jiho Lee, Chang Sun Sim, Cheolin Yoo, Sang Jin Park, Geun Bae Kim, Yangho Kim
BACKGROUND: Industrial pollution may affect the heavy metal body burden of people living near industrial complexes. We determined the average concentrations of atmospheric heavy metals in areas close to and distant from industrial complexes in Korea, and the body concentrations of these heavy metals in residents living near and distant from these facilities. METHODS: The atmospheric data of heavy metals (lead and cadmium) were from the Regional Air Monitoring Network in Ulsan...
January 29, 2018: Journal of Korean Medical Science
Joakim Bjerketorp, Wilfred F M Röling, Xin-Mei Feng, Armando Hernández Garcia, Hermann J Heipieper, Sebastian Håkansson
Chlorophenols are widespread and of environmental concern due to their toxic and carcinogenic properties. Development of less costly and less technically challenging remediation methods are needed; therefore, we developed a formulation based on micronized vermiculite that, when air-dried, resulted in a granular product containing the 4-chlorophenol (4-CP)-degrading Gram-positive bacterium Arthrobacter chlorophenolicus A6. This formulation and stabilization method yielded survival rates of about 60% that remained stable in storage for at least 3 months at 4 °C...
January 18, 2018: Applied Microbiology and Biotechnology
Wei Xiong, Jie Li, Yuzhan Yang, Weimin Wang, Baoqing Shan, Aibin Zhan
Here we presented two datasets (biological and environmental datasets) collected in a comprehensive large geographical scale (approximately 1.1×105 km2) survey of rivers/streams in the Haihe River Basin (HRB), which has become the most polluted river basin in past two decades in China. The survey selected a total of 94 representative sampling sites in the plain region of HRB, where environmental pollution is more severe than the mountain region. The biological dataset contains the information on the identified rotifer species and their abundance, while the environmental dataset provides the measured environmental variables at each sampling site...
April 2018: Data in Brief
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