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https://www.readbyqxmd.com/read/28324819/impact-of-different-feedstocks-derived-biochar-amendment-with-cadmium-low-uptake-affinity-cultivar-of-pak-choi-brassica-rapa-ssb-chinensis-l-on-phytoavoidation-of-cd-to-reduce-potential-dietary-toxicity
#1
Kiran Yasmin Khan, Barkat Ali, Xiaoqiang Cui, Ying Feng, Xiaoe Yang, Peter Joseph Stoffella
Biochar has become eco-friendly amendment used for phytoavoidation with low cadmium (Cd) accumulating cultivars of crops to ensure food safety in Cd contaminated soils. In this study, biochar with different waste feedstock material were evaluated for their effectiveness on essential trace metals mobility, Cd bioavailability and its accumulation in two contrasting Cd accumulating cultivars of pak choi (Brassica rapa ssp. chinensis L.) grown in Cd contaminated Mollisol soil. A greenhouse experiment was conducted with plants grown in Cd contaminated soil that had been amended with biochar derived from barley straw, tomato green waste, chicken manure, duck manure and swine manure at application rate of 0%, 2...
March 18, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28324818/exogenous-malic-acid-alleviates-cadmium-toxicity-in-miscanthus-sacchariflorus-through-enhancing-photosynthetic-capacity-and-restraining-ros-accumulation
#2
Haipeng Guo, Houming Chen, Chuntao Hong, Dean Jiang, Bingsong Zheng
Malic acid (MA) plays an important role in the regulation of plant growth, stomatal aperture, nutrition elements homeostasis and toxic metals tolerance. However, little is known about the effects of exogenous MA on physiological and biochemical responses to toxic metals in plants. To measure the alleviation roles of exogenous MA against cadmium (Cd), we determined the effects of MA on plant growth, net photosynthetic rate (Pn), reactive oxygen species (ROS) accumulation and the activities of anti-oxidant enzymes in the leaves of Miscanthus sacchariflorus (M...
March 18, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28324255/can-red-deer-antlers-be-used-as-an-indicator-of-environmental-and-edible-tissues-trace-element-contamination
#3
Aleksandra Giżejewska, Józef Szkoda, Agnieszka Nawrocka, Jan Żmudzki, Zygmunt Giżejewski
Venison is an attractive product for consumers concerned with healthy lifestyle; however, it can contain high levels of toxic elements, and therefore, it is a possible source of hazardous contaminants in human diet. Antlers are suitable bioindicators of environmental metal contamination, and herein, we assessed the ability of trace element levels in antlers to indicate levels in edible soft tissues. We determined the concentrations of lead (Pb), cadmium (Cd), mercury (Hg), arsenic (As), copper (Cu), zinc (Zn), and iron (Fe) in the liver, kidney, muscle, and antlers of 14 free-ranging red deer (Cervus elaphus) from northeastern Poland using atomic absorption spectrometry...
March 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28324249/evaluation-of-organic-amendment-on-the-effect-of-cadmium-bioavailability-in-contaminated-soils-using-the-dgt-technique-and-traditional-methods
#4
EDITORIAL
Yu Yao, Qin Sun, Chao Wang, Pei-Fang Wang, Shi-Ming Ding
Organic amendments have been widely proposed as a remediation technology for metal-contaminated soils, but there exist controversial results on their effectiveness. In this study, the effect of pig manure addition on cadmium (Cd) bioavailability in Cd-contaminated soils was systematically evaluated by one dynamic, in situ technique of diffusive gradients in thin films (DGT) and four traditional methods based on the equilibrium theory (soil solution concentration and the three commonly used extractants, i.e...
March 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28319906/functional-characterization-of-gram-negative-bacteria-from-different-genera-as-multiplex-cadmium-biosensors
#5
Lara Bereza-Malcolm, Sanja Aracic, Ruban Kannan, Gülay Mann, Ashley E Franks
Widespread presence of cadmium in soil and water systems is a consequence of industrial and agricultural processes. Subsequent accumulation of cadmium in food and drinking water can result in accidental consumption of dangerous concentrations. As such, cadmium environmental contamination poses a significant threat to human health. Development of microbial biosensors, as a novel alternative method for in situ cadmium detection, may reduce human exposure by complementing traditional analytical methods. In this study, a multiplex cadmium biosensing construct was assembled by cloning a single-output cadmium biosensor element, cadRgfp, and a constitutively expressed mrfp1 onto a broad-host range vector...
March 16, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28319859/use-of-clay-to-remediate-cadmium-contaminated-soil-under-different-water-management-regimes
#6
Jianrui Li, Yingming Xu
We examined in situ remediation of sepiolite on cadmium-polluted soils with diverse water regimes, and several variables including brown rice Cd, exchangeable Cd, pH, and available Fe/P. pH, available Fe/P in soils increased gradually during continuous flooding, which contributed to Cd absorption on colloids. In control group (untreated soils), compared to conventional irrigation, brown rice Cd in continuous flooding reduced by 37.9%, and that in wetting irrigation increased by 31.0% (p<0.05). In contrast to corresponding controls, brown rice Cd in sepiolite treated soils reduced by 44...
March 17, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28319776/removal-of-antimony-iii-and-cadmium-ii-from-aqueous-solution-using-animal-manure-derived-hydrochars-and-pyrochars
#7
Lanfang Han, Haoran Sun, Kyoung S Ro, Ke Sun, Judy A Libra, Baoshan Xing
In this study, hydrochars and pyrochars prepared from animal manures were characterized and were used to remove Sb (III) and Cd (II) from aqueous solution. Fourier transform infrared spectroscopy (FTIR) analysis revealed the interaction between Cd (II) and CO and CO groups within biochars and between Sb (III) and CO, CO and OH groups, respectively. Additionally, the lower absolute value of zeta potential of biochar after loading Sb (III) and Cd (II) suggested the occurrence of surface complexation. Existing primarily in the form of Sb (OH)3, the maximum adsorption capacities (Qmax) for Sb (III) were lower than those for Cd (II)...
March 1, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28319742/biochar-provides-a-safe-and-value-added-solution-for-hyperaccumulating-plant-disposal-a-case-study-of-phytolacca-acinosa-roxb-phytolaccaceae
#8
Shengsen Wang, Bin Gao, Yuncong Li, Yong Sik Ok, Chaofeng Shen, Shengguo Xue
In this work, an innovative approach using biochar technology for hyperaccumulator disposal was developed and evaluated. The heavy metal enriched P. acinosa biomass (PBM) was pyrolyzed to produce biochar (PBC). Both PBM and PBC were characterized with X-ray diffraction (XRD) for crystal phases, scanning electron microscopy (SEM) for surface topography, and analyzed for elemental composition and mobility. The results revealed that whewellite, a dominant crystal form in biomass, was decomposed to calcite after pyrolysis...
February 27, 2017: Chemosphere
https://www.readbyqxmd.com/read/28315714/cadmium-induced-malignant-transformation-of-rat-liver-cells-potential-key-role-and-regulatory-mechanism-of-altered-apolipoprotein-e-expression-in-enhanced-invasiveness
#9
Masayo Suzuki, Shuso Takeda, Noriko Teraoka-Nishitani, Akane Yamagata, Takahiro Tanaka, Marika Sasaki, Natsuki Yasuda, Makiko Oda, Tatsuji Okano, Kazuhiro Yamahira, Yuta Nakamura, Takanobu Kobayashi, Katsuhito Kino, Hiroshi Miyazawa, Michael P Waalkes, Masufumi Takiguchi
Cadmium is a transition metal that is classified as human carcinogen by the International Agency for Research on Cancer (IARC) with multiple target sites. Many studies using various model systems provide evidence of cadmium-induced malignancy formation in vivo or malignant cell transformation in vitro. Nonetheless, further studies are needed to completely understand the mechanisms of cadmium carcinogenicity. Our prior studies have utilized a rat liver epithelial cell line (TRL 1215) as a model for cadmium-induced malignant transformation...
March 15, 2017: Toxicology
https://www.readbyqxmd.com/read/28315003/anti-oxidative-responses-on-hepatic-tissue-of-zebrafish-danio-rerio-in-a-short-duration-of-sub-lethal-concentrations-of-cadmium-exposure
#10
Su Mei Wu, Li-Hsin Shu, Jia-Hao Liu, Ching Hsein Chen
The aim of the present study was to identify whether the responses of oxidative stress in zebrafish liver are similar to those in mammalians upon low doses of Cd(2+) exposure in short durations. Fish were exposed to 1.78 μM Cd(2+) (treatment) and 0.0 μM Cd(2+) (control) for 0, 1, 3, and 6 h. The reactive oxygen species (ROS) and lipid peroxidation (LPO) of hepatic tissues significantly increased after 3 and 6 h of Cd(2+) exposure, respectively. Antioxidants glutathione peroxidase (gpx1a), superoxide dismutase (sod), and catalase (cat) were up regulated after 1-3 h, and metallothionein isoforms (smtB and mt2) increased after 3-6 h of Cd(2+) exposure...
March 18, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28314195/treatment-of-contaminated-greywater-using-pelletised-mine-water-sludge
#11
Suhail N Abed, Suhad A Almuktar, Miklas Scholz
Precipitated sludge (ochre) obtained from a mine water treatment plant was considered as an adsorbent substance for pollutants, since ochre is relatively free from problematic levels of toxic elements, which could impair on the quality of water to be treated. Artificially created ochre pellets from mixing Portland cement with raw ochre sludge were utilised to remediate either high (HC) or low (LC) contaminated synthetic greywater (SGW) in mesocosm-scale stabilisation ponds at 2-day and 7-day contact times under real weather conditions in Salford...
March 14, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28314151/cadmium-lead-and-arsenic-contamination-in-paddy-soils-of-a-mining-area-and-their-exposure-effects-on-human-hepg2-and-keratinocyte-cell-lines
#12
Shengguo Xue, Lizheng Shi, Chuan Wu, Hui Wu, Yanyan Qin, Weisong Pan, William Hartley, Mengqian Cui
A mining district in south China shows significant metal(loid) contamination in paddy fields. In the soils, average Pb, Cd and As concentrations were 460.1, 11.7 and 35.1mgkg(-1) respectively, which were higher than the environmental quality standard for agricultural soils in China (GB15618-1995) and UK Clea Soil Guideline Value. The average contents of Pb, Cd and As in rice were 5.24, 1.1 and 0.7mgkg(-1) respectively, which were about 25, 4.5 or 2.5 times greater than the limit values of the maximum safe contaminant concentration standard in food of China (GB 2762-2012), and about 25, 10 or 1 times greater than the limit values of FAO/WHO standard...
March 14, 2017: Environmental Research
https://www.readbyqxmd.com/read/28306745/nickel-and-cadmium-induced-slbp-depletion-a-potential-pathway-to-metal-mediated-cellular-transformation
#13
Ashley Jordan, Xiaoru Zhang, Jinquan Li, Freda Laulicht-Glick, Hong Sun, Max Costa
Both nickel and cadmium compounds have been established as group I carcinogens for several decades. Despite over-whelming evidence of these compounds' carcinogenicity in humans, the specific underlying molecular mechanisms that govern metal induced cellular transformation remain unclear. In this study, we found that there were slightly different effects on decreased SLBP mRNA and protein as well as increased polyA H3.1 in our nickel exposed cells. This suggested that nickel and arsenic have similar effects on canonical histone mRNA transcription and translation...
2017: PloS One
https://www.readbyqxmd.com/read/28306542/biomonitoring-of-danish-school-children-and-mothers-including-biomarkers-of-pbde-and-glyphosate
#14
Lisbeth E Knudsen, Pernille Winton Hansen, Seher Mizrak, Heidi K Hansen, Thit A Mørck, Flemming Nielsen, Volkert Siersma, Line Mathiesen
BACKGROUND: The Danish part of the large European Human biomonitoring pilot project Demonstration of a study to Coordinate and Perform Human biomonitoring on a European Scale (DEMOCOPHES) investigated the urine, hair and blood concentrations of 66 different environmental chemicals in a group of 145 Danish school children aged 6-11 years and their mothers from rural and urban areas in autumn 2011. Some - but not all - results were published; however, the concurrence of the chemicals has not been assessed...
March 17, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/28303713/growth-of-single-crystalline-cadmium-iodide-nanoplates-cdi2-mos2-ws2-wse2-van-der-waals-heterostructures-and-patterned-arrays
#15
Ruoqi Ai, Xun Guan, Jia Li, Kangkang Yao, Peng Chen, Zhengwei Zhang, Xidong Duan, Xiangfeng Duan
Two-dimensional layered materials (2DLMs) have attracted considerable recent interest for their layer-number-dependent physical and chemical properties, as well as potential technological opportunities. Here we report the synthesis of two-dimensional layered cadmium iodide (CdI2) nanoplates using a vapor transport and deposition approach. Optical microscopy and scanning electron microscopy studies show that the resulting CdI2 nanoplates predominantly adopt hexagonal and triangular morphologies with a lateral dimension of ∼2-10 μm...
March 17, 2017: ACS Nano
https://www.readbyqxmd.com/read/28303536/cadmium-adsorption-chelation-and-compartmentalization-limit-root-to-shoot-translocation-of-cadmium-in-rice-oryza-sativa-l
#16
Qiang Xu, Changquan Wang, Shigui Li, Bing Li, Qiquan Li, Guangdeng Chen, Weilan Chen, Feng Wang
Strategies to reduce cadmium (Cd) in rice grain, below concentrations that represent serious human health concerns, require that the mechanisms of Cd distribution and accumulation within rice plants be established. Here, a comprehensive hydroponic experiment was performed to investigate the differences in the Cd uptake, chelation and compartmentalization between high (D83B) and low (D62B) Cd-accumulation cultivars contrasting in Cd accumulation in order to establish the roles of these processes in limiting Cd translocation from root to shoot...
March 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28302978/determination-of-ultra-trace-metal-impurities-in-high-purity-cadmium-using-inductively-coupled-plasma-mass-spectrometry-after-matrix-separation-with-anion-exchange-resin
#17
Ayaka Wada, Naoko Nonose, Masaki Ohata, Tsutomu Miura
The analytical method for ultra-trace metal impurities at μg kg(-1) level in high-purity Cd was examined by inductively coupled plasma mass spectrometry (ICP-MS) combined with matrix separation by Bio-Rad AG MP-1M anion exchange resin. After the separation of Cd, the metal impurities such as Li, In, Cr, Mn, Fe, Co, Ni, Cu, Ga, Sr, Ba and Pb were measured by an ICP-quadrupole mass spectrometer (ICP-QMS) and ICP-sector field mass spectrometer (ICP-SFMS). From the comparison of measured results, it was evaluated that the analytical sensitivity by ICP-SFMS was 10 times higher than ICP-QMS...
2017: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
https://www.readbyqxmd.com/read/28302721/involvement-of-notch1-signaling-in-malignant-progression-of-a549-cells-subjected-to-prolonged-cadmium-exposure
#18
Kota Fujiki, Hisako Inamura, Takamitsu Miyayama, Masato Matsuoka
Cadmium exposure is known to increase lung cancer risk, but the underlying molecular mechanisms in cadmium-stimulated progression of malignancy are unclear. Here, we examined the effects of prolonged cadmium exposure on the malignant progression of A549 human lung adenocarcinoma cells and the roles of Notch1, hypoxia-inducible factor 1α (HIF-α), and insulin-like growth factor 1 receptor (IGF-1R)/Akt/extracellular signal-regulated kinase (ERK)/p70 S6 kinase 1 (S6K1) signaling pathways. Exposing A549 cells to 10 or 20 μM cadmium chloride (CdCl2) for 9-15 weeks induced a high proliferative potential, the epithelial-mesenchymal transition (EMT), stress fiber formation, high cell motility, and resistance to anti-tumor drugs...
March 16, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28300594/cadmium-induced-testicular-damage-is-associated-with-mineral-imbalance-increased-antioxidant-enzymes-activity-and-protein-oxidation-in-rats
#19
Marli C Cupertino, Rômulo D Novaes, Eliziária C Santos, Daniel Santos Sena Bastos, Daiane Cristina Marques Dos Santos, Maria do Carmo Queiroz Fialho, Sérgio L P Matta
No abstract text is available yet for this article.
March 11, 2017: Life Sciences
https://www.readbyqxmd.com/read/28299929/metal-transfer-among-organs-following-acute-and-chronic-exposures-using-autoradiography-cadmium-bioaccumulation-by-macrobrachium-australiense
#20
Tom Cresswell, Debashish Mazumder, Paul D Callaghan, An Phuc Nguyen, Michael Corry, Stuart L Simpson
The uptake, depuration and organ distribution of the radioisotope 109Cd was used to explore the internal kinetics of this non-essential metal following accumulation from solution by the freshwater decapod crustacean Macrobrachium australiense. Acute (6 h) and chronic (7 to 14 d) exposures to the radioisotope in solutions of 0.56 µg Cd/L, were followed by depuration in metal- and isotope-free water for up to 21 d. The anatomical distribution of the radionuclide was visualised using autoradiography at pre-defined time points...
March 16, 2017: Environmental Science & Technology
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