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Environmental Pollution

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https://www.readbyqxmd.com/read/28822931/adherence-of-microplastics-to-soft-tissue-of-mussels-a-novel-way-to-uptake-microplastics-beyond-ingestion
#1
Prabhu Kolandhasamy, Lei Su, Jiana Li, Xiaoyun Qu, Khalida Jabeen, Huahong Shi
Microplastic pollution is recognized as an emerging threat to aquatic ecosystems. One of the main environmental risks associated with microplastics is their bioavailability to marine organisms. Up to date, ingestion has been widely accepted as the sole way for the animals to uptake microplastics. Nevertheless, microplastics have also been found in some organs which are not involved in the process of ingestion. We hypothesize that the animal might uptake microplastics through adherence in addition to ingestion...
August 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28822929/enhanced-roadside-drainage-system-for-environmentally-sensitive-areas
#2
William R Trenouth, Bahram Gharabaghi, Hani Farghaly
Stormwater runoff from roadways that encroach upon environmentally sensitive areas (ESAs) is one of the leading causes of degradation in urbanizing watersheds around the world. This is due to toxicity of the pollutant cocktail commonly found in roadway runoff, including heavy metals and sediments, as well as road salts from winter maintenance operations. This paper presents a novel design of an enhanced roadside drainage system (ERDS); an improved roadside drainage system that is intended to protect groundwater recharge zones and sensitive aquatic species in ESAs...
August 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28822504/is-smog-innocuous-air-pollution-and-cardiovascular-disease
#3
EDITORIAL
Sundeep Mishra
Air pollution is a significant environmental and health hazard. Earlier studies had examined the adverse health effects associated with short- and long-term exposure to particulate matter on respiratory disease. However, later studies demonstrated that was actually cardiovascular disease that accounted for majority of mortality. Furthermore, it was not gaseous pollutants like oxides of nitrate, sulfur, carbon mono-oxide or ozone but the particulate matter or PM, of fine or coarse size (PM2.5 and PM10) which was linearly associated with mortality; PM2...
July 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28822331/evidence-of-low-dose-effects-of-the-antidepressant-fluoxetine-and-the-fungicide-prochloraz-on-the-behavior-of-the-keystone-freshwater-invertebrate-gammarus-pulex
#4
N De Castro-Català, I Muñoz, J L Riera, A T Ford
In recent years, behavior-related endpoints have been proposed as rapid and reliable ecotoxicological tools for risk assessment. In particular, the use of detritivores to test the toxicity of pollutants through feeding is currently becoming a well-known method. Experiments combining feeding with other behavioral endpoints can provide relevant information about direct and indirect toxicological effects of chemicals. We carried out a feeding experiment with the shredder Gammarus pulex in order to detect indirect (through leaf conditioning) and direct effects (through water exposure) of two pollutants at environmentally relevant concentrations: the fungicide prochloraz (6 μg/L) and the antidepressant fluoxetine (100 ng/L)...
August 16, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28822259/ambient-air-pollution-temperature-and-kawasaki-disease-in-shanghai-china
#5
Zhijing Lin, Xia Meng, Renjie Chen, Guoying Huang, Xiaojing Ma, Jingjing Chen, Min Huang, Meirong Huang, Yonghao Gui, Chen Chu, Fang Liu, Haidong Kan
Kawasaki disease (KD) is a kind of pediatric vasculitis of unknown etiology which mainly affects the development of coronary artery aneurysms. Few studies have explored the potential environmental risk factors on KD incidence. We performed a time-series analysis to investigate the associations between air pollution and temperature and KD in Shanghai, China. We collected daily-hospitalized KD patients that were admitted in major pediatric specialty hospitals located in the urban areas of Shanghai from 2001 to 2010...
August 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28822029/gene-structure-and-comparative-and-phylogenetic-analyses-of-catla-catla-cyp1a-full-length-cdna-and-its-responsiveness-to-benzo-a-pyrene-and-copper-sulphate-at-early-developmental-stages
#6
Kavita Kumari, Gireesh-Babu Pathakota, Shivendra Kumar, Gopal Krishna
In the present study, full-length CYP1A cDNA from Catla catla (Catla) has been identified, and its real-time quantitative reverse transcription PCR (qRT-PCR) expression has been evaluated in different tissues, developmental stages (0, 3, 6, 12 and 24 h and 5, 7 and 9 days post-fertilization) and copper sulphate and benzo(a)pyrene (BaP)-treated 5-day post-fertilization (dpf) larvae (6 to 6.5 mm). Various structural, comparative and phylogenetic analyses of the deduced amino acid sequence revealed that the identified gene of Catla belongs to the CYP1A1 subfamily...
August 19, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28822013/biomonitoring-of-chemicals-in-biota-of-two-wetland-protected-areas-exposed-to-different-levels-of-environmental-impact-results-of-the-previeni-project
#7
Cristiana Guerranti, Guido Perra, Eva Alessi, Davide Baroni, Dante Caserta, Donatella Caserta, Augusto De Sanctis, Emiliano Leonida Fanello, Cinzia La Rocca, Michela Mariottini, Monia Renzi, Sabrina Tait, Carlo Zaghi, Alberto Mantovani, Silvano Ettore Focardi
The PREVIENI project (funded by the Ministry of Environment) investigated the exposure to endocrine disrupters in samples of human population and environmental biota in Italy. The environmental biomonitoring considered two Italian WWF Oasis, with the aim to compare the presence and effects of endocrine disruptors in organisms from two protected natural areas, respectively, upstream and downstream a chemical emission site. Chemical analysis of pollutants' tissue levels was made on tissues from earthworm, barbell, trout, and coot, selected as bioindicator organisms...
August 18, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28821289/transcriptome-wide-analyses-indicate-mitochondrial-responses-to-particulate-air-pollution-exposure
#8
Ellen Winckelmans, Tim S Nawrot, Maria Tsamou, Elly Den Hond, Willy Baeyens, Jos Kleinjans, Wouter Lefebvre, Nicolas Van Larebeke, Martien Peusens, Michelle Plusquin, Hans Reynders, Greet Schoeters, Charlotte Vanpoucke, Theo M de Kok, Karen Vrijens
BACKGROUND: Due to their lack of repair capacity mitochondria are critical targets for environmental toxicants. We studied genes and pathways reflecting mitochondrial responses to short- and medium-term PM10 exposure. METHODS: Whole genome gene expression was measured in peripheral blood of 98 adults (49% women). We performed linear regression analyses stratified by sex and adjusted for individual and temporal characteristics to investigate alterations in gene expression induced by short-term (week before blood sampling) and medium-term (month before blood sampling) PM10 exposure...
August 18, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28820910/impaired-dendritic-growth-and-positioning-of-cortical-pyramidal-neurons-by-activation-of-aryl-hydrocarbon-receptor-signaling-in-the-developing-mouse
#9
Eiki Kimura, Ken-Ichiro Kubo, Toshihiro Endo, Wenting Ling, Kazunori Nakajima, Masaki Kakeyama, Chiharu Tohyama
The basic helix-loop-helix (bHLH) transcription factors exert multiple functions in mammalian cerebral cortex development. The aryl hydrocarbon receptor (AhR), a member of the bHLH-Per-Arnt-Sim subfamily, is a ligand-activated transcription factor reported to regulate nervous system development in both invertebrates and vertebrates, but the functions that AhR signaling pathway may have for mammalian cerebral cortex development remains elusive. Although the endogenous ligand involved in brain developmental process has not been identified, the environmental pollutant dioxin potently binds AhR and induces abnormalities in higher brain function of laboratory animals...
2017: PloS One
https://www.readbyqxmd.com/read/28820581/a-simple-approach-to-the-visible-light-photoactivation-of-molecular-metal-oxides
#10
Satomi Fujimoto, Jamie M Cameron, Rong-Jia Wei, Katharina Kastner, David Robinson, Victor Sans, Graham N Newton, Hiroki Oshio
This study explores a new method to maximize the visible-light-driven photocatalytic performance of organic-inorganic hybrid polyoxometalates (POMs). Experimental and theoretical investigations of a family of phosphonate-substituted POMs show that modification of grafted organic moieties can be used to tune the electronic structure and photoactivity of the metal oxide component. Unlike fully inorganic polyoxotungstates, these organic-inorganic hybrid species are responsive to visible light and function as photocatalysts (λ > 420 nm) in the decomposition of a model environmental pollutant...
August 18, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28820023/use-of-oxalic-acid-as-inducer-in-photocatalytic-oxidation-of-cresol-red-in-aqueous-solution-under-natural-and-artificial-light
#11
N Seraghni, I Ghoul, I Lemmize, A Reguig, N Debbache, T Sehili
This work was carried out in the field of water treatment using advanced oxidation processes (AOPs), especially photolysis of carboxylic acid leads to the formation in situ of hydroxyl radical ((.)OH). Cresol red (CR) degradation induced by organic acids/UV system was investigated in aqueous solution. The preliminary study of CR-organic acid mixture in the dark and at room temperature allowed confirming the absence of interaction under our experimental conditions. However, up on irradiation at 365 nm the percentage of elimination of CR was 89% after 5 hours of irradiation...
August 18, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28819808/mir398-and-mir395-are-involved-in-response-to-so2-stress-in-arabidopsis-thaliana
#12
Lihong Li, Huilan Yi, Meizhao Xue, Min Yi
Sulfur dioxide (SO2) is a common air pollutant that has adverse effects on plants. MicroRNAs (miRNAs) are small noncoding RNA that play critical roles in plant development and stress response. In this study, we found that two miRNAs, miR398 and miR395, were differentially expressed in Arabidopsis shoots under SO2 stress. The expression of miR398 was down-regulated, and the transcript levels of its target genes, Cu/Zn superoxide dismutases (CSD1 and CSD2), were increased during SO2 exposure. The activity of superoxide dismutase (SOD), one of the major antioxidant enzymes, was enhanced with the increase in the CSD transcript level, suggesting an important role of miR398 in response to SO2-induced oxidative stress...
August 17, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/28819546/oxidative-stress-harms-and-benefits-for-human-health
#13
REVIEW
Gabriele Pizzino, Natasha Irrera, Mariapaola Cucinotta, Giovanni Pallio, Federica Mannino, Vincenzo Arcoraci, Francesco Squadrito, Domenica Altavilla, Alessandra Bitto
Oxidative stress is a phenomenon caused by an imbalance between production and accumulation of oxygen reactive species (ROS) in cells and tissues and the ability of a biological system to detoxify these reactive products. ROS can play, and in fact they do it, several physiological roles (i.e., cell signaling), and they are normally generated as by-products of oxygen metabolism; despite this, environmental stressors (i.e., UV, ionizing radiations, pollutants, and heavy metals) and xenobiotics (i.e., antiblastic drugs) contribute to greatly increase ROS production, therefore causing the imbalance that leads to cell and tissue damage (oxidative stress)...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28819498/why-regulatory-indifference-towards-pharmaceutical-pollution-of-the-environment-could-be-a-missed-opportunity-in-public-health-protection-a-holistic-view
#14
Pakoyo Fadhiru Kamba, Bruhan Kaggwa, Edson Ireeta Munanura, Tom Okurut, Freddy Eric Kitutu
The last generation has witnessed bludgeoning of the world's population, a spike in disease burden, and unprecedented levels of pharmaceutical consumption and production. Unfortunately, pharmaceuticals have left their industrial and household confines and leaked into the environment. Pharmaceuticals are now major environmental pollutants, and are ubiquitous in waters and soils. Unlike other environmental contaminants, pharmaceutical pollutants are not yet regulated globally, simply because acute risk assessments show insignificant human health hazard...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28819354/mediating-roles-of-ppars-in-the-effects-of-environmental-chemicals-on-sex-steroids
#15
REVIEW
Qiansheng Huang, Qionghua Chen
Peroxisome proliferator-activated receptors (PPARs) are ligand-activated nuclear receptors that are widely involved in various physiological functions. They are widely expressed through the reproductive system. Their roles in the metabolism and function of sex steroids and thus the etiology of reproductive disorders receive great concern. Various kinds of exogenous chemicals, especially environmental pollutants, exert their adverse impact on the reproductive system through disturbing the PPAR signaling pathway...
2017: PPAR Research
https://www.readbyqxmd.com/read/28819316/association-of-ambient-particulate-matter-2-5-with-intensive-care-unit-admission-due-to-pneumonia-a-distributed-lag-non-linear-model
#16
Zhongheng Zhang, Yucai Hong, Ning Liu
Air pollution in China has become a major environmental problem. There is a lack of evidence on the impact of haze (especially PM2.5) on intensive care unit admission due to pneumonia (ICUp). We hypothesized that PM2.5 was independently associated with ICUp and there was a non-linear time lag effect. All ICU admissions occurred from January 1, 2014 to December 31, 2016 in Sir Run-Run Shaw hospital were included in the study. The primary reasons for admission were categorized into pneumonia and non-pneumonia...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819098/protection-and-consolidation-of-stone-heritage-by-self-inoculation-with-indigenous-carbonatogenic-bacterial-communities
#17
Fadwa Jroundi, Mara Schiro, Encarnación Ruiz-Agudo, Kerstin Elert, Inés Martín-Sánchez, María Teresa González-Muñoz, Carlos Rodriguez-Navarro
Enhanced salt weathering resulting from global warming and increasing environmental pollution is endangering the survival of stone monuments and artworks. To mitigate the effects of these deleterious processes, numerous conservation treatments have been applied that, however, show limited efficacy. Here we present a novel, environmentally friendly, bacterial self-inoculation approach for the conservation of stone, based on the isolation of an indigenous community of carbonatogenic bacteria from salt damaged stone, followed by their culture and re-application back onto the same stone...
August 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28818815/mercury-concentrations-in-china-s-coastal-waters-and-implications-for-fish-consumption-by-vulnerable-populations
#18
Yindong Tong, Mengzhu Wang, Xiaoge Bu, Xin Guo, Yan Lin, Huiming Lin, Jing Li, Wei Zhang, Xuejun Wang
We assessed mercury (Hg) pollution in China's coastal waters, including the Bohai Sea, the Yellow Sea, the East China Sea and the South China Sea, based on a nationwide dataset from 301 sampling sites. A methylmercury (MeHg) intake model for humans based on the marine food chain and human fish consumption was established to determine the linkage between water pollutants and the pollutant intake by humans. The predicted MeHg concentration in fish from the Bohai Sea was the highest among the four seas included in the study...
August 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28818814/exposure-to-polybrominated-diphenyl-ethers-and-perfluoroalkyl-substances-in-a-remote-population-of-alaska-natives
#19
Samuel Byrne, Samarys Seguinot-Medina, Pamela Miller, Vi Waghiyi, Frank A von Hippel, C Loren Buck, David O Carpenter
BACKGROUND: Many Alaska Native communities rely on a traditional marine diet that contains persistent organic pollutants (POPs). The indoor environment is also a source of POPs. Polybrominated diphenyl ethers (PBDEs) and perfluoroalkyl substances (PFASs) are present both in the traditional diet and the home indoor environment. OBJECTIVES: We assessed exposure to PBDEs and PFASs among residents of two remote Alaska Native villages on St. Lawrence Island. Ninespine stickleback (Pungitious pungitious) and Alaska blackfish (Dallia pectoralis) were used to detect accumulation of these compounds in the local environment...
August 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28818592/the-impact-of-chemosensitisation-on-bioaccumulation-and-sediment-toxicity
#20
Denise Kurth, Stefan Lips, Riccardo Massei, Martin Krauss, Till Luckenbach, Tobias Schulze, Werner Brack
Cellular multixenobiotic resistance (MXR) transport proteins enhance the efflux of numerous organic pollutants. However, MXR proteins may be blocked or saturated by xenobiotic compounds, acting as inhibitors - also called chemosensitisers. Although effective on a cellular level, the environmental relevance of chemosensitisers has not been conclusively demonstrated. Since sediments are an important source of bioaccumulating compounds in aquatic ecosystems, sediments and sediment-associated hydrophobic pollutants were investigated for their potential to increase exposure and toxicity in the presence of chemosensitisation...
August 9, 2017: Chemosphere
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