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https://www.readbyqxmd.com/read/28110470/thermal-control-weather-and-aging
#1
REVIEW
Alexandra Schneider, Regina Rückerl, Susanne Breitner, Kathrin Wolf, Annette Peters
PURPOSE OF THE REVIEW: The purpose of this review is to highlight the latest developments in the field of weather and health with a focus on the elderly. The current state of knowledge is summarized and open questions and emerging fields of research are discussed. RECENT FINDINGS: It is expected that climate change will lead to higher global average surface temperatures and more extreme climatic conditions. Previous studies have shown that non-optimal temperatures are associated with increased morbidity and mortality, specifically in elderly people...
January 21, 2017: Current Environmental Health Reports
https://www.readbyqxmd.com/read/28110455/influence-of-environmental-and-anthropogenic-factors-at-the-bottom-sediments-in-a-doce-river-tributary-in-brazil
#2
Deyse Almeida Dos Reis, Aníbal da Fonseca Santiago, Laura Pereira Nascimento, Hubert Mathias Peter Roeser
In developing countries, it is uncommon to find watersheds that have been the object of detailed environmental studies. It makes the assessment of the magnitude of environmental impacts and pollution of these sites difficult. This research demonstrated ways to understand the dynamics of river bottom sediments contamination, even for watersheds with a lack of environmental data. Based on geochemical affinity, we conducted a comprehensive study on the concentration of metals and metalloids. Then, we discussed the probable origin of the concentration of these elements at the bottom sediment along the Matipó River...
January 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28110454/tackling-the-salinity-pollution-nexus-in-coastal-aquifers-from-arid-regions-using-nitrate-and-boron-isotopes
#3
V Re, E Sacchi
Salinization and nitrate pollution are generally ascertained as the main issues affecting coastal aquifers worldwide. In arid zones, where agricultural activities also result in soil salinization, both phenomena tend to co-exist and synergically contribute to alter groundwater quality, with severe negative impacts on human populations and natural ecosystems' wellbeing. It becomes therefore necessary to understand if and to what extent integrated hydrogeochemical tools can help in distinguishing among possible different salinization and nitrate contamination origins, in order to provide adequate science-based support to local development and environmental protection...
January 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28110452/comparison-of-trace-elements-in-size-fractionated-particles-in-two-communities-with-contrasting-socioeconomic-status-in-houston-tx
#4
Inkyu Han, Yuncan Guo, Masoud Afshar, Thomas H Stock, Elaine Symanski
Levels of ambient air pollutants, including particulate matter (PM), are often higher in low-socioeconomic status (SES) communities than in high-SES communities. Houston is the fourth largest city in the USA and is home to a large petrochemical industry, an active port, and congested roadways, which represent significant emission sources of air pollution in the region. To compare levels of air pollution between a low-SES and a high-SES community, we simultaneously collected a 7-day integrated size-fractionated PM between June 2013 and November 2013...
February 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28110358/pollution-assessment-of-the-biob%C3%A3-o-river-chile-prioritization-of-substances-of-concern-under-an-ecotoxicological-approach
#5
Álvaro Alonso, Ricardo Figueroa, Pilar Castro-Díez
The water demand for human activities is rapidly increasing in developing countries. Under these circumstances, preserving aquatic ecosystems should be a priority which requires the development of quality criteria. In this study we perform a preliminary prioritization of the risky substances based on reported ecotoxicological studies and guidelines for the Biobío watershed (Central Chile). Our specific aims are (1) reviewing the scientific information on the aquatic pollution of this watershed, (2) determining the presence and concentration of potential toxic substances in water, sediment and effluents, (3) searching for quality criteria developed by other countries for the selected substances and (4) prioritizing the most risky substances by means of deterministic ecotoxicological risk assessment...
January 21, 2017: Environmental Management
https://www.readbyqxmd.com/read/28110246/fe-fe2o3-promoted-electrochemical-mineralization-of-atrazine-via-a-triazinon-ring-opening-mechanism
#6
Xing Ding, Shengyao Wang, Wanqiu Shen, Yi Mu, Li Wang, Hao Chen, Lizhi Zhang
In this study, an electrochemical/electro-Fenton oxidation (EC/EF) system was designed to degrade atrazine, by utilizing boron-doped diamond (BDD) and Fe@Fe2O3 core-shell nanowires loaded active carbon fiber (Fe@Fe2O3/ACF) as the anode and the cathode, respectively. This EC/EF system exhibited much higher degradation rate, decholorination and mineralization efficiency of atrazine than the electrochemical (EC) and electrochemical/traditional electro-Fenton (EC/TEF) oxidation counterpart systems without Fe@Fe2O3 core-shell nanowires...
January 16, 2017: Water Research
https://www.readbyqxmd.com/read/28110241/autopsy-tissues-as-biological-monitors-of-human-exposure-to-environmental-pollutants-a-case-study-concentrations-of-metals-and-pcdd-fs-in-subjects-living-near-a-hazardous-waste-incinerator
#7
José L Domingo, Francisco García, Martí Nadal, Marta Schuhmacher
Human biomonitoring is of tremendous importance to prevent potential adverse effects derived from human exposure to chemicals. Blood and urine are among the biological monitors more frequently used. However, biological matrices such as breast milk, hair, nails, saliva, feces, teeth, and expired air are also often used. In addition, and focused mainly on long-term exposure, adipose tissue and other human tissues like bone, liver, brain or kidney, are also used as biological monitors of certain substances, especially for long-term biomonitoring...
January 19, 2017: Environmental Research
https://www.readbyqxmd.com/read/28110163/evaluation-of-remediation-techniques-in-soils-affected-by-residual-contamination-with-heavy-metals-and-arsenic
#8
M García-Carmona, A Romero-Freire, M Sierra Aragón, F J Martínez Garzón, F J Martín Peinado
Residual soil pollution from the Aznalcóllar mine spill is still a problem in some parts of the affected area, today converted in the Guadiamar Green Corridor. Dispersed spots of polluted soils, identified by the absence of vegetation, are characterized by soil acid pH and high concentrations of As, Pb, Cu and Zn. Ex situ remediation techniques were performed with unrecovered soil samples. Landfarming, Composting and Biopiles techniques were tested in order to immobilize pollutants, to improve soil properties and to promote vegetation recovery...
January 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28110147/self-photodegradation-of-formaldehyde-under-visible-light-by-solid-wood-modified-via-nanostructured-fe-doped-wo3-accompanied-with-superior-dimensional-stability
#9
Chengmin Sheng, Chao Wang, Hanwei Wang, Chunde Jin, Qingfeng Sun, Song Li
In this paper, solid wood with superior self-photodegradation of formaldehyde (HCHO) under visible-light was realized through a facile method at room temperature. Spherical Fe-doped WO3 nanostructured materials deposited on the wood substrate with diameters ranging from 100 to 150nm were mainly responsible for the self-photodegradation of formaldehyde. Fe-doped WO3 nanostructured materials were strongly adhered to wood surface through electrostatic and hydrogen bonding interactions. Additionally, the dimensional stability and the inherent anisotropic thickness swelling of wood were greatly improved and eliminated, respectively...
January 16, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28110047/are-cuo-nanoparticles-effects-on-hemocytes-of-the-marine-scallop-chlamys-farreri-caused-by-particles-and-or-corresponding-released-ions
#10
Xuemei Sun, Bijuan Chen, Bin Xia, Qian Han, Lin Zhu, Keming Qu
Manufactured nanoparticles (NPs) have become emerging pollutants and attracted extensive concern about their potential effects on the marine environment. However, the contribution of particles and their corresponding released ions to the overall toxicity of CuO NPs is poorly understood. In this study, we investigated the toxicological effects of CuO NPs and their corresponding released ions on the hemocytes of Chlamys farreri. Both copper species induced membrane damage, and increased lysosome contents in hemocytes...
January 19, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28110017/remediation-efficiency-of-three-treatments-on-water-polluted-with-endocrine-disruptors-assessment-by-means-of-in%C3%A2-vitro-techniques
#11
Juliana Polloni-Silva, Ana Valdehita, Renata Fracácio, José M Navas
Chemical substances with potential to disrupt endocrine systems have been detected in aquatic environments worldwide, making necessary the investigation about water treatments able to inhibit such potential. The present work aimed to assess the efficiency for removing endocrine disruptors (with estrogenic and androgenic activity) of three simple and inexpensive substrates that could be potentially used in sectors or regions with limited resources: powdered activated carbon (PAC), powdered natural zeolite (ZEO) (both at a concentration of 500 mg L(-1)) and natural aquatic humic substances (AHS) (at 30 mg L(-1))...
January 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/28110016/spatial-characteristics-of-urinary-btex-concentrations-in-the-general-population
#12
Xanthi Tsangari, Xanthi D Andrianou, Agapios Agapiou, Pawel Mochalski, Konstantinos C Makris
Benzene, toluene, ethylbenzene, o-, m-, and p-xylenes (BTEX) are ubiquitous outdoor and indoor air pollutants associated with both environmental and health effects. The objective of this exploratory study was to determine the magnitude and variability of urinary BTEX levels among residents of two areas located in the same city (Nicosia, Cyprus). The two areas differed with respect to their proximity to an industrial cluster and an intercity-highway. First morning urine voids were collected during a random campaign from selected households in the two urban areas (n = 48)...
January 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28110015/rapid-assessment-of-estrogenic-compounds-by-cxcl-test-illustrated-by-the-screening-of-the-uv-filter-derivative-benzophenones
#13
Denis Habauzit, Catherine Martin, Gwenneg Kerdivel, Farzad Pakdel
CXCL-test is a method that uses the estrogen-dependent secretion of the natural endogenous chemokine CXCL12 to evaluate the estrogenic activity of molecules. CXCL12 chemokine is involved in the estrogen dependent proliferation of breast cancer cells. Its measure is an indicator of cell proliferation and is used as an alternative test to classical proliferation test. Here we aimed to optimize this test, first to increase the number of tested molecules in a single assay and then to decrease the number of intermediate steps...
January 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28110013/dna-damage-and-translational-response-during-detoxification-from-copper-exposure-in-a-wild-population-of-chironomus-riparius
#14
Paola Bernabò, Matteo Gaglio, Francesco Bellamoli, Gabriella Viero, Valeria Lencioni
Copper is one of the predominant components of pesticides employed in agriculture and known to be highly toxic once it reaches aquatic organisms. The impact of sublethal concentrations of this metal on wild insects is not yet completely understood. Studies addressing alterations in different levels of gene expression are still lacking. We previously demonstrated that in a wild population of Chironomus riparius, HSP and CYP families of genes were up-regulated at the transcriptional level after copper exposure...
January 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28110012/interaction-effects-and-mechanism-of-pb-pollution-and-soil-microorganism-in-the-presence-of-earthworm
#15
Gao Liu, Siyuan Ling, Xiuping Zhan, Zhifen Lin, Wei Zhang, Kuangfei Lin
Heavy metals usually cause great damage to soil ecosystem. Lead (Pb) was chosen as a research object in the present study. Here repeated exposure of Pb was designed for the soil artificially contaminated. A laboratory study was conducted to determine the changes in the Pb availability and biological activity in the presence of earthworm, and the risk assessment code (RAC) was applied to evaluate the remediated soil. Results demonstrated that Pb gradually transformed to more stable fractions (OMB- and FeMnOX-Pb) under microbial action, indicating the risk level of Pb was declined...
January 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/28110011/distributions-of-persistent-organic-contaminants-in-sediments-and-their-potential-impact-on-macrobenthic-faunal-community-of-the-geum-river-estuary-and-saemangeum-coast-korea
#16
Seo Joon Yoon, Seongjin Hong, Bong-Oh Kwon, Jongseong Ryu, Chang-Hee Lee, Jungho Nam, Jong Seong Khim
Over the last 30 years, the Geum River Estuary and Saemangeum Coast have been subject to major environmental changes, including dike construction, reclamation, and development of industrial complexes. This study aimed to: 1) investigate the occurrence of polycyclic aromatic hydrocarbons (PAHs), alkylphenols (APs), and styrene oligomers (SOs), 2) identify the sources of sedimentary organic matter, and 3) determine key environmental factors controlling the macrozoobenthos community structure. A total of 58 surface sediments were collected from the estuary and coastal area in 2014...
January 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28110008/typha-latifolia-as-potential-phytoremediator-of-2-4-dichlorophenol-analysis-of-tolerance-uptake-and-possible-transformation-processes
#17
M C Rodriguez-Hernandez, R F García De la-Cruz, E Leyva, G Navarro-Tovar
2,4-Dichlorophenol (2,4-DCP) is considered a priority pollutant due to its high toxicity. Therefore, it is urgent to develop technologies for the disposal of this pollutant. Various remediation processes have been proposed for the elimination of 2,4-DCP in contaminated water, however, most of them involve high costs of operation and maintenance. This study aimed to determine the capacity of remediation of 2,4-DCP in water by Typha latifolia L. wild plants. For that, the tolerance, removal, accumulation and biotransformation of 2,4-DCP by T...
January 2, 2017: Chemosphere
https://www.readbyqxmd.com/read/28110005/concentrations-sources-and-human-health-risk-of-inhalation-exposure-to-air-toxics-in-edmonton-canada
#18
Md Aynul Bari, Warren B Kindzierski
With concern about levels of air pollutants in recent years in the Capital Region of Alberta, an investigation of ambient concentrations, sources and potential human health risk of hazardous air pollutants (HAPs) or air toxics was undertaken in the City of Edmonton over a 5-year period (2009-2013). Mean concentrations of individual HAPs in ambient air including volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs) and trace metals ranged from 0.04 to 1.73 μg/m(3), 0.01-0.54 ng/m(3), and 0...
January 7, 2017: Chemosphere
https://www.readbyqxmd.com/read/28109940/proteome-response-of-fish-under-multiple-stress-exposure-effects-of-pesticide-mixtures-and-temperature-increase
#19
Allison Gandar, Pascal Laffaille, Nathalie Marty-Gasset, Didier Viala, Caroline Molette, Séverine Jean
Aquatic systems can be subjected to multiple stressors, including pollutant cocktails and elevated temperature. Evaluating the combined effects of these stressors on organisms is a great challenge in environmental sciences. To the best of our knowledge, this is the first study to assess the molecular stress response of an aquatic fish species subjected to individual and combined pesticide mixtures and increased temperatures. For that, goldfish (Carassius auratus) were acclimated to two different temperatures (22 and 32°C) for 15 days...
January 15, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28109891/redox-regulation-of-electrophilic-signaling-by-reactive-persulfides-in-cardiac-cells
#20
REVIEW
Motohiro Nishida, Akiyuki Nishimura, Tetsuro Matsunaga, Hozumi Motohashi, Shingo Kasamatsu, Takaaki Akaike
Maintaining a redox balance by means of precisely controlled systems that regulate production, and elimination, and metabolism of electrophilic substances (electrophiles) is essential for normal cardiovascular function. Electrophilic signaling is mainly regulated by endogenous electrophiles that are generated from reactive oxygen species, nitric oxide, and the derivative reactive species of nitric oxide during stress responses, as well as by exogenous electrophiles including compounds in foods and environmental pollutants...
January 18, 2017: Free Radical Biology & Medicine
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