Heavy Metals

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Sun, 05/16/2021 - 06:08
Author(s): Shujie Wang, Qiao Li, Yanan Gao, Zhenlei Zhou, Zhen Li Elevating levels of environmental lead (Pb) results in serious hazards to health of animals and human beings. In this study, daily diet with three different levels of Pb (1, 10, and 100 mg/kg) were fed to ISA Brown layers. It showed that the kidney and liver have the relatively high Pb concentration (2.34 and 0.51 ppm) after...
Sat, 05/15/2021 - 08:05
by Sameer Al-Maisary, Gabriele Romano, Matthias Karck, Raffaele De Simone, Jamila Kremer Background The implantation of cardiac implantable electronic devices (CIED) has increased in the last decades with improvement in the quality of life of patients with cardiac rhythm disorders. The presence of bilateral subclavian, innominate or superior vena cava obstruction is a major limitation to device...
Sat, 05/15/2021 - 06:19
Author(s): Sib Sankar Giri, Min Jung Kim, Sang Guen Kim, Sang Wha Kim, Jeong Woo Kang, Jun Kwon, Sung Bin Lee, Won Joon Jung, Venkatachalam Sukumaran, Se Chang Park Curcumin exhibited numerous key activities including antioxidant, anti-inflammatory, and immunostimulatory effects in fish. This study evaluated the protective effects of curcumin (CUR) against lead (Pb)-induced toxicities in fish....
Fri, 05/14/2021 - 02:05
Salinity is a significant constraint for plant survival and productivity. Therefore, an immediate solution to this problem is sought to meet the human population's food demands. Recently, Menadione sodium bisulphite (MSB) has emerged as a significant regulator of plant defense response under abiotic stress. Studies on MSB are scarce, and a few reports on salinity (Arabidopsis and okra) and...
Thu, 05/13/2021 - 00:00
There are two main strategies for antibiotic discovery: target-based and phenotypic screening. The latter has been much more successful in delivering first-in-class antibiotics, despite the major bottleneck of delayed Mechanism-of-Action (MOA) identification. Although finding new antimicrobial compounds is a very challenging task, identifying their MOA has proven equally challenging. MOA...
Wed, 05/12/2021 - 22:08
Journal of Applied Toxicology, EarlyView. Cadmium (Cd) is a toxic heavy metal widely found in the environment. Cd is also a potential neurotoxicant, and its exposure is associated with impairment of cognitive function. However, the underlying mechanisms by which Cd induces neurotoxicity are unclear. In this study, we investigated the in vitro effect of Cd on primary murine neural stem/progenitor...
Wed, 05/12/2021 - 06:09
Author(s): Jiaqiao Zhu, Zhutao Huang, Fan Yang, Min Zhu, Jiangqin Cao, Jiali Chen, Yan Lin, Shuai Guo, Junwei Li, Zongping Liu Cadmium is an environmental pollutant that has extensive deleterious effects on the reproductive system. However, the mechanisms underlying the effects of cadmium on preimplantation embryos are unclear. Here, we used a mouse model to investigate the effects of maternal...
Wed, 05/12/2021 - 02:03
Heavy metal pollution is a great hazard to the environment that enters the ecosystem through different natural and anthropogenic sources. A study was performed to evaluate concentrations of Cd and Pb in selected plants, Ricinus communis and Parthenium hysterophorus, and soils from different functional sites in Sialkot. Maximum fresh and dry weights of R. communis were recorded from control and...
Mon, 05/10/2021 - 06:08
Author(s): Yujie Wang, Xinyu Zheng, Xiaosan He, Qixin Lü, Xin Qian, Qingtie Xiao, Ruiyu Lin Microbial remediation is a promising technique to reduce Cd accumulation in rice (Oryza sativa). In present study, a set of pot experiments were conducted to evaluate the effects of Cd-tolerate Pseudomonas TCd-1 inoculation on rice Cd uptake, soil enzyme activities and Cd bioavailability in the rhizosphere...
Sun, 05/09/2021 - 02:02
Heavy metals exposure has been linked to severe health problems. In Mexico, the Monterrey metropolitan area (MMA) is considered one of the most polluted industrial regions. Because birds have been used successfully as environmental biomonitors, the levels of lead, cadmium, and arsenic in feathers of Great-tailed grackles (Quiscalus mexicanus) from two sites within and one site outside the MMA...
Sat, 05/08/2021 - 02:03
The bioaccumulation of trace elements (TEs) in crops consumed by humans can reduce food production as a consequence of photosynthetic damage in plants and cause several diseases in humans. Liming is a soil management strategy designed to alleviate soil acidity and mitigating these problems by reducing the TE bioavailability. In this study, we evaluated the effect of liming on photosynthesis,...
Fri, 05/07/2021 - 06:09
Author(s): Javier Ávila-Román, Jorge R. Soliz-Rueda, Francisca Isabel Bravo, Gerard Aragonès, Manuel Suárez, Anna Arola-Arnal, Miquel Mulero, Maria-Josepa Salvadó, Lluís Arola, Cristina Torres-Fuentes, Begoña Muguerza Background Phenolic compounds are one of the most heterogeneous group of plant secondary metabolites with over 50,000 diverse molecules identified so far. Despite the low...
Fri, 05/07/2021 - 04:02
Edible insects are a novel food in most countries; their popularity is growing because of their high protein/low fat content, ease of cultivation, and small environmental impact. To our knowledge, this is the first report that addresses both microbiological and chemical hazards in edible insects. Samples were collected from retail stores or purchase through e-commerce. A total of 51 samples of...
Fri, 05/07/2021 - 02:03
Abstract Main conclusion Transgenic Arabidopsis thaliana and Populus alba plants overexpressing the zinc transporter ScZRC1 in shoots exhibit Zn tolerance. Increased Zn concentrations were observed in shoots of P. alba, a species suitable for phytoremediation. Abstract Genetic engineering of plants for phytoremediation is worth to consider if genes leading to heavy metal accumulation and...
Fri, 05/07/2021 - 02:02
Fungi are eukaryotic organisms that have the ability to synthesize an enormous number of metabolites with a vast diversity of chemical structures and bioactivities. Chaetomiaceae species are a wealthy source of enzymes with diverse biotechnological and industrial applications such as PMO (polysaccharide monooxygenase), L-methioninase, β-1,3-glucanase, laccase, dextranase, lipolytic, pectinolytic...
Thu, 05/06/2021 - 14:05
Animal bioassays have been developed to estimate oral relative bioavailability (RBA) of metals in soil, dust, or food for accurate health risk assessment. However, the comparability in RBA estimates from different labs remains largely unclear. Using 12 soil and soil-like standard reference materials (SRMs), this study investigated variability in lead (Pb) and arsenic (As) RBA estimates employing...
Thu, 05/06/2021 - 02:02
The potential of two aquatic plants, e.g., Typha angustifolia and Acorus calamus, and a terrestrial plant, e.g., Pandanus amaryllifolius, was evaluated in hydroponic experiments for rhizofiltration of cadmium (Cd) and zinc (Zn). Of the three species, T. angustifolia experienced a 100% survival rate and showed no symptoms of toxicity, with substantial values of dry biomass production (11.5–20.8 g...
Wed, 05/05/2021 - 02:03
Abstract Bioconversion using microorganisms and their enzymes is an important tool in many industrial fields. The discovery of useful new microbial enzymes contributes to the development of industries utilizing bioprocesses. Streptomyces sp. EAS-AB2608, isolated from a soil sample collected in Japan, can convert the tetrahydrobenzotriazole CPD-1 (a selective positive allosteric modulator of...
Wed, 05/05/2021 - 02:03
In this study, the occurrence of heavy metals including cadmium (Cd), chromium (Cr), copper (Cu), lead (Pb), and zinc (Zn) was investigated in indoor dust samples collected from 33 urban and rural areas in 11 provinces, China. The concentrations of the selected heavy metals were determined by an inductively coupled plasma mass spectrometry. The mean concentrations of Zn (166 mg kg−1), Pb (40.7 mg...
Tue, 05/04/2021 - 06:15
Author(s): Monashree Sarma Bora, Kali Prasad Sarma The present research is an appraisal of anatomical and ultrastructural alterations in aquatic fern, Ceratopteris pteridoides under cadmium (Cd) exposure. Plants were cultured hydroponically for 12 consecutive days in different Cd treatments: 10 µM L−1 (CDT1), 20 µM L−1 (CDT2), 40 µM L−1 (CDT3) and 60 µM L−1 (CDT4). Anatomical and ultrastructural...
Sun, 05/02/2021 - 06:08
Author(s): Hongliang Lu, Yingchao Hu, Chunquan Kang, Qinyuan Meng, Zhihua Lin Heavy metal pollution in natural water bodies generally interacting with other environmental stressors produces toxic effects on aquatic organisms. However, toxicological studies exploring interactive effects of these stressors are still limited. Here, tadpoles of the Zhenhai brown frog (Rana zhenhaiensis) were exposed...
Sat, 05/01/2021 - 02:03
Cadmium (Cd) is a toxic metal and an environmental pollutant that significantly reduces plant growth and productivity. Proper management can ameliorate dysfunction and improve the plant growth and productivity exposed to Cd. Therefore, the present study was conducted to explore the protective role of the fungicides tebuconazole (TEB) and trifloxystrobin (TRI) in helping wheat (Triticum aestivum L...
Fri, 04/30/2021 - 06:08
Author(s): Rafaela Amaral dos Reis, Sophie Hendrix, Miguel Pedro Mourato, Luísa Louro Martins, Jaco Vangronsveld, Ann Cuypers The commonly used Arabidopsis thaliana natural accessions Columbia (Col-0) and Wassilewskija (Ws) are known to differ in their metal sensitivity, with Col-0 being more sensitive to copper (Cu) and cadmium (Cd) than Ws. As both Cu and Cd are known to affect Cu homeostasis,...
Fri, 04/30/2021 - 02:02
Intensified vehicular traffic causes increased heavy metal contamination of the environment. We investigated the heavy metal chemistry of soils located under silver fir stands in the vicinity of Poland’s S7 roadway. Three sampling sites were located in fir stands in central Poland. Fieldwork included soil sampling of the organic (O) horizon and mineral (A) topsoil. We analyzed the soil pH, carbon...
Thu, 04/29/2021 - 16:00
Rice poses a major source of the toxic contaminant cadmium (Cd) for humans. Here, we elucidated the role of Cd storage forms (i.e., the chemical Cd speciation) on the dynamics of Cd within rice. In a pot trial, we grew rice on a Cd-contaminated soil in upland conditions and sampled roots and shoots parts at flowering and maturity. Cd concentrations, isotope ratios, Cd speciation (X-ray absorption...
Thu, 04/29/2021 - 12:07
Author(s): Qi Tao, Bing Li, Yixuan Chen, Junwen Zhao, Qiquan Li, Yulan Chen, Quanhui Peng, Shu Yuan, Huanxiu Li, Rong Huang, Changquan Wang The recycling of agricultural waste is a global challenge to the sustainable development of agriculture. By using corn stalks, we studied the feasibility of combining anaerobic fermentation and pyrolysis processes to produce both fermentated liquid feed and...
Thu, 04/29/2021 - 12:05
Author(s): Jian Zhang, Qingqing Xiao, Pengcheng Wang Cadmium (Cd) is among the most toxic heavy metals in soils. The ways by which tomato plants inoculated with a phosphate-solubilizing bacterium (PSB) respond to Cd and regulate gene expression remain unclear. We investigated hormone metabolism and genes involved in Cd resistance in tomato seedlings inoculated with the PSB strain N3. Cd inhibited...
Thu, 04/29/2021 - 12:05
Author(s): MeiYan Guan, MingXue Chen, ZhenZhen Cao Management of nitrogen fertilizer is a good strategy for controlling cadmium (Cd) accumulation in plants. Some progress has already been made but much remains to be done. Here, we show that mutants with loss of function of nitrate transporter1.1 (NRT1.1) or nitrate transporter2.1 (NRT2.1) had lower Cd concentrations than wild-type plants under...
Wed, 04/28/2021 - 10:02
ABSTRACT The evolution of pathogens in response to selective pressures present during chronic infections can influence their persistence and virulence and the outcomes of antimicrobial therapy. Because subpopulations within an infection can be spatially separated and the host environment can fluctuate, an appreciation of the pathways under selection may be most easily revealed through the...
Wed, 04/28/2021 - 10:02
We investigated the prevalence and transmission of NDM-producing Enterobacteriaceae in fecal samples of geese and environmental samples from a goose farm in southern China. The samples were cultivated on MacConkey agar plates supplemented with meropenem. Individual colonies were examined for blaNDM, and blaNDM-positive bacteria were characterized based on whole-genome sequencing (WGS) data from...
Wed, 04/28/2021 - 06:11
Author(s): Ping Zhang, Yue Cai, Lingjie Zhang, Yuting Mao, Mingxue Xiang, Zhongbang Zhu, Youqin Zou Selective removal of metal ions, especially lead (Pb2+), is of enormous importance for environmental protection. A major challenge is to rational design capture agent for Pb2+ with high efficiency and excellent selectivity. Here we recycled the organic layered wastes to prepare a novel sulfate-...
Mon, 04/26/2021 - 08:04
Lead (Pb) contamination in environment has been identified as a threat to human health and ecosystems. In an effort to reduce the health and ecological risks associated with Pb mining wastes, a field study was conducted to stabilize Pb using phosphate (P)-enriched biosolid amendments in the contaminated mining wastes (average of 1004 mg Pb kg−1) located within the Jasper County Superfund Site,...
Sat, 04/24/2021 - 08:04
by Hongke Wu, Ming Wang, Jay D. Raman, Alicia C. McDonald Exposures to heavy metals have been linked to prostate cancer risk. The relationship of these exposures with serum prostate-specific antigen (PSA), a marker used for prostate cancer screening, is unknown. We examined whether total urinary arsenic, urinary dimethylarsonic acid, blood cadmium, blood lead, and total blood mercury levels are...
Thu, 04/22/2021 - 06:16
Author(s): Hao Wu, Shufang Zheng, Jinxi Zhang, Shiwen Xu, Zhiruo Miao Cadmium (Cd), an environmental pollutant, causes several adverse reactions in animals. High dose of Cd has serious cytotoxicities, including the induction of programmed cell necrosis, autophagy and apoptosis, which has aroused wide public concern. The balance of cytokine network is affected by Th1/Th2 balance which is closely...
Thu, 04/22/2021 - 02:02
The research aims to analyse the treatment possibility of Cd-polluted soil using electrokinetics driven by solar power in comparison with driving by direct current power. Meanwhile, the effects of electrolyte on electrokinetics were investigated. Five runs of electrokinetics were carried out using different electrolytes and energy sources. Experimental results showed that the combined application...
Thu, 04/22/2021 - 02:02
Abstract Aims There is little information available on the potential influence of soil micro-arthropods on the phytoremediation of metal-contaminated soils using hyperaccumulator plants. We hypothesized that soil micro-arthropods may promote organic matter decomposition, thereby releasing nitrogen and enhancing the growth of and metal uptake by hyperaccumulators and thereby increase...
Wed, 04/21/2021 - 04:03
Pseudomonas aeruginosa is a Gram-negative opportunistic pathogen that is frequently found in the airways of cystic fibrosis (CF) patients due to the dehydrated mucus that collapses the underlying cilia and prevents mucociliary clearance. During this life-long chronic infection, P. aeruginosa cell accumulates mutations that lead to inactivation of the mucA gene that results in the constitutive...
Wed, 04/21/2021 - 04:03
The humoral immune response plays a key role in suppressing the pathogenesis of SARS-CoV-2. The molecular determinants underlying the neutralization of the virus remain, however, incompletely understood. Here, we show that the ability of antibodies to disrupt the binding of the viral spike protein to the angiotensin-converting enzyme 2 (ACE2) receptor on the cell, the key molecular event...
Wed, 04/21/2021 - 02:03
Lead (Pb) not only negatively alters plant growth and yield but may also have potentially toxic risks to human health. Nevertheless, the interaction between rice (Oryza sativa L.) plants and the molecular cell dynamics induced by lead-methyl jasmonate (MJ) remains unknown. Here, plants were hydroponically exposed to Pb (150 and 300 µM) alone or in combination with 0.5 and 1 µM MJ. The application...
Sat, 04/17/2021 - 02:03
Abstract Bacterial cell has always been an attractive target for anti-infective drug discovery. MurA (UDP-N-acetylglucosamine enolpyruvyl transferase) enzyme of Escherichia coli (E.coli) is crucial for peptidoglycan biosynthetic pathway, as it is involved in the early stages of bacterial cell wall biosynthesis. In the present study we aim to identify novel chemical structures targeting the MurA...
Sat, 04/17/2021 - 02:03
Pollutants emitted into the air not only have local effect but can also affect areas further from the source. The goal of this study was to assess a method for identifying the sources of element pollution in rainwater using enrichment factors supported by Weather Research and Forecasting (WRF) model. In this study, we collected nineteen rainwater samples at the two locations of Durham and Chimney...
Fri, 04/16/2021 - 18:03
The organochlorine insecticide dichlorodiphenyltrichloroethane (DDT) and heavy metal cadmium (Cd) are widespread environmental pollutants. They are persistent in the environment and can accumulate in organisms. Although the individual toxicity of DDT and Cd has been well documented, their combined toxicity is still not clear. Since liver is their common target, in this study, the individual and...
Fri, 04/16/2021 - 08:03
by Katja Pirc, Vesna Hodnik, Tina Snoj, Tea Lenarčič, Simon Caserman, Marjetka Podobnik, Hannah Böhm, Isabell Albert, Anita Kotar, Janez Plavec, Jure Borišek, Martina Damuzzo, Alessandra Magistrato, Boris Brus, Izidor Sosič, Stanislav Gobec, Thorsten Nürnberger, Gregor Anderluh The lack of efficient methods to control the major diseases of crops most important to agriculture leads to huge...
Fri, 04/16/2021 - 06:09
Author(s): Yilu Gao, Jiameng Hong, Yuke Guo, Mengxu Chen, Alan K. Chang, Lei Xie, Xueping Ying Cadmium (Cd) has been widely used in industry and can accumulate in the water, soil, and food. Meretrix meretrix is one of the marine shellfishes cultivated for economic purpose in China. The increasing Cd levels in coastal marine water could adversely affect the economic benefits of shellfish...
Thu, 04/15/2021 - 06:18
Author(s): Xin Wang, Yiwei Xu, Yahui Li, Yanxiao Li, Zhihua Li, Wen Zhang, Xiaobo Zou, Jiyong Shi, Xiaowei Huang, Chao Liu, Wenting Li This work presents an electrochemical device based on a composite modification of amine functionalized Zr(IV) metal–organic framework (UiO-66-NH2) and multi-walled carbon nanotubes (MWCNTs) for voltammetry determination of cadmium ions (Cd2+). The UiO-66-NH2@...
Thu, 04/15/2021 - 06:15
Author(s): Anna Maria Cybulska, Szymon Grochans, Magdalena Sylwia Kamińska, Mateusz Bosiacki, Karolina Skonieczna-Żydecka, Elżbieta Grochans The aim of this systematic review was to assess if cadmium and lead levels are linked to anxiety and depression. A systematic literature search was conducted to identify observational trials evaluating the impact of cadmium and lead on the incidence and...
Thu, 04/15/2021 - 06:15
Author(s): Xueying Zong, Juanjuan Zhang, Jinwei Zhu, Linyu Zhang, Lijuan Jiang, Ying Yin, Hongyan Guo Microplastics are widespread in freshwater environments, their biological effects and combined effects of other pollutants have attracted extensive attention. In this study, we investigated the adsorption properties of heavy metals onto polystyrene (PS) microplastics as well as the...
Thu, 04/15/2021 - 04:03
Here we have described a systematic structure activity relationship (SAR) of a set of compounds inspired from cladosporin, a tool compound that targets parasite (Plasmodium falciparum) lysyl tRNA synthetase (KRS). Four sets of analogues, synthesized based on point changes in the chemical scaffold of cladosporin and other logical modifications and hybridizations, were assessed using high...
Wed, 04/14/2021 - 16:00
An increase in environmental pollution resulting from toxic heavy metals and metalloids [e.g., cadmium (Cd), arsenic (As), and lead (Pb)] causes serious health risks to humans and animals. Mitigation strategies need to be developed to reduce the accumulation of the toxic elements in plant-derived foods. Natural and genetically-engineered plants with hyper-tolerant and hyper-accumulating capacity...

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