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https://www.readbyqxmd.com/read/28224335/evidence-of-colloidal-transport-of-pahs-during-column-experiments-run-with-contaminated-soil-samples
#1
Karim Benhabib, Marie-Odile Simonnot, Pierre Faure, Michel Sardin
Brownfield soils may contain high levels of organic pollutants particularly polycyclic aromatic hydrocarbons (PAHs). It is essential to predict their migration and fate and to evaluate the risk of transfer to sensitive targets, such as water resources, ecosystems and human health. In this study, soil samples have been taken from an experimental contaminated site of former steel activities located at Homecourt (Lorraine, France). These samples have been lixiviated in laboratory column in water-saturated condition at room temperature...
February 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28224033/distribution-and-risk-factors-associated-with-intestinal-parasite-infections-among-children-with-gastrointestinal-disorders
#2
Hamed Kiani, Ali Haghighi, Roya Salehi, Eznollah Azargashb
AIM: Prevalence and risk factors associated with intestinal parasites among children ≤ 12 years old in Nahavand county western Iran, was the objective of this search. BACKGROUND: Intestinal parasites (IPs) are important health problems among most societies. METHODS: This cross sectional study was carried out during 6 months from April to September 2014 in Nahavand County western Iran. Fecal samples were collected from 500 children suffering from gastrointestinal disorders (GIDs) and examined by macroscopy and microscopic (using saline and iodine wet mount, formalin-ether sedimentation, Trichrome and modified Ziehl Neelsen staining) methods...
December 2016: Gastroenterology and Hepatology From Bed to Bench
https://www.readbyqxmd.com/read/28222184/ecological-and-human-health-risks-associated-with-abandoned-gold-mine-tailings-contaminated-soil
#3
Veronica Mpode Ngole-Jeme, Peter Fantke
Gold mining is a major source of metal and metalloid emissions into the environment. Studies were carried out in Krugersdorp, South Africa, to evaluate the ecological and human health risks associated with exposure to metals and metalloids in mine tailings contaminated soils. Concentrations of arsenic (As), cadmium (Cd), chromium (Cr), cobalt (Co), copper (Cu), lead (Pb), manganese (Mn), nickel (Ni), and zinc (Zn) in soil samples from the area varied with the highest contamination factors (expressed as ratio of metal or metalloid concentration in the tailings contaminated soil to that of the control site) observed for As (3...
2017: PloS One
https://www.readbyqxmd.com/read/28221978/quantitative-microbial-risk-assessment-for-escherichia-coli-o157-h7-in-fresh-cut-lettuce
#4
Hao Pang, Elisabetta Lambertini, Robert L Buchanan, Donald W Schaffner, Abani K Pradhan
Leafy green vegetables, including lettuce, are recognized as potential vehicles for foodborne pathogens such as Escherichia coli O157:H7. Fresh-cut lettuce is potentially at high risk of causing foodborne illnesses, as it is generally consumed without cooking. Quantitative microbial risk assessments (QMRAs) are gaining more attention as an effective tool to assess and control potential risks associated with foodborne pathogens. This study developed a QMRA model for E. coli O157:H7 in fresh-cut lettuce and evaluated the effects of different potential intervention strategies on the reduction of public health risks...
February 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28221372/neglecting-legumes-has-compromised-human-health-and-sustainable-food-production
#5
Christine H Foyer, Hon-Ming Lam, Henry T Nguyen, Kadambot H M Siddique, Rajeev K Varshney, Timothy D Colmer, Wallace Cowling, Helen Bramley, Trevor A Mori, Jonathan M Hodgson, James W Cooper, Anthony J Miller, Karl Kunert, Juan Vorster, Christopher Cullis, Jocelyn A Ozga, Mark L Wahlqvist, Yan Liang, Huixia Shou, Kai Shi, Jingquan Yu, Nandor Fodor, Brent N Kaiser, Fuk-Ling Wong, Babu Valliyodan, Michael J Considine
The United Nations declared 2016 as the International Year of Pulses (grain legumes) under the banner 'nutritious seeds for a sustainable future'. A second green revolution is required to ensure food and nutritional security in the face of global climate change. Grain legumes provide an unparalleled solution to this problem because of their inherent capacity for symbiotic atmospheric nitrogen fixation, which provides economically sustainable advantages for farming. In addition, a legume-rich diet has health benefits for humans and livestock alike...
August 2, 2016: Nature Plants
https://www.readbyqxmd.com/read/28220869/nitric-oxide-is-involved-in-the-oxytetracycline-induced-suppression-of-root-growth-through-inhibiting-hydrogen-peroxide-accumulation-in-the-root-meristem
#6
Qing-Xiang Yu, Golam Jalal Ahammed, Yan-Hong Zhou, Kai Shi, Jie Zhou, Yunlong Yu, Jing-Quan Yu, Xiao-Jian Xia
Use of antibiotic-contaminated manure in crop production poses a severe threat to soil and plant health. However, few studies have studied the mechanism by which plant development is affected by antibiotics. Here, we used microscopy, flow cytometry, gene expression analysis and fluorescent dyes to study the effects of oxytetracycline (OTC), a widely used antibiotic in agriculture, on root meristem activity and the accumulation of hydrogen peroxide (H2O2) and nitric oxide (NO) in the root tips of tomato seedlings...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28220383/removal-of-dde-by-exploiting-the-alcoho-phobic-interactions
#7
Kazım Köse, Dursun Ali Köse
DDE (1,1-bis-(4-chlorophenyl)-2,2-dichloroethene), which is a commonly used pesticides in agriculture, has harmful effects on human health. Therefore, the removal of this substance from the drinking water and the soil is essential. Since DDT (1,1″-(2,2,2-Trichloroethane-1,1-diyl) bis(4-chlorobenzene)) is derivation of DDE, the presence of DDT can be monitored by the detection of DDE present in the environment. Herein, we report on the development of aspartic acid-incorporated poly(2-hydroxyethyl methacrylate-L-aspartic acid) [poly(HEMA-MAsp)] cryogel for the removal of DDE from aqueous solutions for the first time in the literature...
February 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28218450/chromium-iv-exposure-via-src-ras-signaling-promotes-cell-transformation
#8
Suthakar Ganapathy, Ping Li, Jean Lafontant, Rui Xiong, Tianqi Yu, Guojun Zhang, Changyan Chen
Hexavalent chromium [Cr(VI)] is a well-known environment carcinogen. The exposure of Cr(VI) through contaminated soil, air particles and drinking water is a strong concern for the public health worldwide. While many studies have been done, it remains unclear which intracellular molecules transduce Cr(VI)-mediated carcinogenic signaling in cells to promote cancer. In this study, we demonstrated that upon Cr(VI) treatment, the intracellular receptor src was activated, which further upregulated Ras activity, leading to the augmentation of ROS and onset of ER stress in human lung epithelial BEAS-2B or keratinocytes...
February 20, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28212668/association-of-community-sanitation-usage-with-soil-transmitted-helminth-infections-among-school-aged-children-in-amhara-region-ethiopia
#9
William E Oswald, Aisha E P Stewart, Michael R Kramer, Tekola Endeshaw, Mulat Zerihun, Berhanu Melak, Eshetu Sata, Demelash Gessese, Tesfaye Teferi, Zerihun Tadesse, Birhan Guadie, Jonathan D King, Paul M Emerson, Elizabeth K Callahan, Matthew C Freeman, W Dana Flanders, Thomas F Clasen, Christine L Moe
BACKGROUND: Globally, in 2010, approximately 1.5 billion people were infected with at least one species of soil-transmitted helminth (STH), Ascaris lumbricoides, Trichuris trichiura, hookworm (Ancylostoma duodenale and Necator americanus). Infection occurs through ingestion or contact (hookworm) with eggs or larvae in the environment from fecal contamination. To control these infections, the World Health Organization recommends periodic mass treatment of at-risk populations with deworming drugs...
February 17, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28211339/phytoextraction-of-contaminated-urban-soils-by-panicum-virgatum-l-enhanced-with-application-of-a-plant-growth-regulator-bap-and-citric-acid
#10
Matthew Aderholt, Dale L Vogelien, Marina Koether, Sigurdur Greipsson
Lead (Pb) contamination in soil represents a threat to human health. Phytoextraction has gained attention as a potential alternative to traditional remediation methods because of lower cost and minimal soil disruption. The North American native switchgrass (Panicum virgatum L.) was targeted due to its ability to produce high biomass and grow across a variety of ecozones. In this study switchgrass was chemically enhanced with applications of the soil-fungicide benomyl, chelates (EDTA and citric acid), and PGR to optimize phytoextraction of Pb and zinc (Zn) from contaminated urban soils in Atlanta, GA...
February 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/28199939/sorption-and-desorption-of-selected-non-steroidal-anti-inflammatory-drugs-in-an-agricultural-loam-textured-soil
#11
Y Zhang, G W Price, R Jamieson, D Burton, K Khosravi
Non-steroidal, anti-inflammatory drugs (NSAIDs) are widely used pharmaceutical products with analgesic and anti-inflammatory effects that are consistently detected in municipal wastewater systems and in municipal biosolids. Land application of biosolids and irrigation with reclaimed wastewater introduces these compounds into agricultural environments, which is an emerging issue of concern for ecosystem health. In this study, the sorption-desorption behaviour of four commonly consumed NSAIDs, including naproxen (NPX), ibuprofen (IBU), ketoprofen (KTF), and diclofenac (DCF), was examined in a loam textured soil exposed to either an individual-compound or a mixture of the four NSAIDs...
February 6, 2017: Chemosphere
https://www.readbyqxmd.com/read/28199938/assessment-of-multiple-exposure-to-chemical-elements-and-health-risks-among-residents-near-huodehong-lead-zinc-mining-area-in-yunnan-southwest-china
#12
Yirun Wang, Ruming Wang, Liyun Fan, Tiantian Chen, Yahong Bai, Qianru Yu, Ying Liu
The contents of chemical elements (Cd, Cr, Cu, Pb and Zn) in 11 kinds of crop/vegetables and soils around the Huodehong lead-zinc mining area in Yunnan, Southwest China were determined by using inductive coupled plasma emission spectrometry (ICP-MS). Results showed that element contents in soils decreased in the order of Zn > Pb > Cr > Cu > Cd. The high geo-accumulation indexes (Igeo) showed that cultivated soils near mine were practically polluted by Cd, Pb and Zn. The contents of Cd, Cr and Pb in crop/vegetables samples were significantly higher than the maximum permissible standard set by China...
January 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28197169/effects-of-litter-on-seedling-emergence-and-seed-persistence-of-three-common-species-on-the-loess-plateau-in-northwestern-china
#13
Rui Zhang, Xiaowen Hu, Jerry M Baskin, Carol C Baskin, Yanrong Wang
Litter accumulation resulting from land use change (enclosure) is one of the key variables influencing seedling recruitment and consequently the regeneration of plant populations and seed persistence in the soil seed bank. A better understanding of the effects of litter on seed germination and seedling emergence is crucial for developing a new set of indicators for grassland ecosystem health and for grassland management policy. We investigated the effects of seed position in litter and amount of litter covering the seed on seedling emergence and seed persistence of three common species on the Loess Plateau in northwestern China...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28196978/ivermectin-enigmatic-multifaceted-wonder-drug-continues-to-surprise-and-exceed-expectations
#14
REVIEW
Andy Crump
Over the past decade, the global scientific community have begun to recognize the unmatched value of an extraordinary drug, ivermectin, that originates from a single microbe unearthed from soil in Japan. Work on ivermectin has seen its discoverer, Satoshi Ōmura, of Tokyo's prestigious Kitasato Institute, receive the 2014 Gairdner Global Health Award and the 2015 Nobel Prize in Physiology or Medicine, which he shared with a collaborating partner in the discovery and development of the drug, William Campbell of Merck & Co...
February 15, 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28194624/concentration-of-heavy-metals-in-vegetables-and-potential-health-risk-assessment-in-china
#15
Taiyang Zhong, Dawei Xue, Limin Zhao, Xiuying Zhang
Food safety is an important issue in the world. This study assessed the health risk for the Chinese public when consuming vegetables grown in China, based on 1335 data records from 220 published papers during 2007-2016. The results showed that the average of Pb, Cd, and Hg concentration in vegetables was 0.106, 0.041, and 0.008 mg/kg, which were lower than the maximum allowable concentrations, respectively. Leaf vegetables contained higher heavy metals than root vegetables and fruit vegetables. On a provincial scale, the highest Pb, Cd, and Hg concentrations in vegetables were determined by those in soil and atmosphere...
February 13, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28189028/assessment-of-heavy-metal-pollution-spatial-distribution-and-origin-in-agricultural-soils-along-the-sin%C3%A3%C2%BA-river-basin-colombia
#16
José Marrugo-Negrete, José Pinedo-Hernández, Sergi Díez
The presence of metals in agricultural soils from anthropogenic activities such as mining and agricultural use of metals and metal-containing compounds is a potential threat for human health through the food chain. In this study, the concentration of heavy metals in 83 agricultural soils irrigated by the Sinú River, in northern Colombia, affected by mining areas upstream and inundated during seasonal floods events were determined to evaluate their sources and levels of pollution. The average concentrations of Cu, Ni, Pb, Cd, Hg and Zn were 1149, 661, 0...
February 7, 2017: Environmental Research
https://www.readbyqxmd.com/read/28187388/sustainability-likelihood-of-remediation-options-for-metal-contaminated-soil-sediment
#17
Season S Chen, Jessica S Taylor, Kitae Baek, Eakalak Khan, Daniel C W Tsang, Yong Sik Ok
Multi-criteria analysis and detailed impact analysis were carried out to assess the sustainability of four remedial alternatives for metal-contaminated soil/sediment at former timber treatment sites and harbour sediment with different scales. The sustainability was evaluated in the aspects of human health and safety, environment, stakeholder concern, and land use, under four different scenarios with varying weighting factors. The Monte Carlo simulation was performed to reveal the likelihood of accomplishing sustainable remediation with different treatment options at different sites...
February 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/28185733/evaluating-the-potential-health-risk-of-toxic-trace-elements-in-vegetables-accounting-for-variations-in-soil-factors
#18
Yang Yang, Weiping Chen, Meie Wang, Yanling Li, Chi Peng
Vegetable crop consumption is one of the main sources of dietary exposure to toxic trace elements (TEs). A paired survey of soil and vegetable samples was conducted in 589 agricultural sites in the Youxian prefecture, southern China, to investigate the effect of soil factors on the accumulation of arsenic, cadmium, mercury, and lead in different vegetables. A site-specific model was developed to estimate the health risk from vegetable consumption. The TE concentration varied in different plant species, and rape can be cultivated in contaminated areas for its potential use in restricting the transfer of TE from soil to edible plant parts...
February 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28185221/waste-dumpsites-and-public-health-a-case-for-lead-exposure-in-zimbabwe-and-potential-global-implications
#19
Tsanangurayi Tongesayi, Jameson Kugara, Sunungurai Tongesayi
Most waste sites in Zimbabwe are not sanitary landfills but open dumps that indiscriminately receive waste from municipalities, industries, commercial establishments, and social services establishments. People, including children, who eke out a living through scavenging the dumps expose themselves to environmental pollutants at the dumps via inadvertent ingestion and inhalation of contaminated dust, and dermal absorption. The public is potentially being exposed to a slew of the pollutants via air, water, and food, all contaminated by uncontrolled leachates and aerially deposited dust and particulates from the sites...
February 9, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28184370/metaproteomics-as-a-complementary-approach-to-gut-microbiota-in-health-and-disease
#20
REVIEW
Bernardo A Petriz, Octávio L Franco
Classic studies on phylotype profiling are limited to the identification of microbial constituents, where information is lacking about the molecular interaction of these bacterial communities with the host genome and the possible outcomes in host biology. A range of OMICs approaches have provided great progress linking the microbiota to health and disease. However, the investigation of this context through proteomic mass spectrometry-based tools is still being improved. Therefore, metaproteomics or community proteogenomics has emerged as a complementary approach to metagenomic data, as a field in proteomics aiming to perform large-scale characterization of proteins from environmental microbiota, such as the human gut...
2017: Frontiers in Chemistry
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