Heavy Metals

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Tue, 10/22/2019 - 03:37
Author(s): Chenlu Fu, Hongling Zhang, Mingzhu Xia, Wu Lei, Fengyun WangAbstractAn eco-friendly corncob biochar based montmorillonite composite (Cc-Mt) was synthesized for the single adsorption and co-adsorption of lead (Pb(II)) and a pharmaceutical emerging organic contaminant Atenolol (ATE). In single adsorption system, the maximum equilibrium capacity of Cc-Mt for Pb (II) and ATE were 139.78 mg...
Tue, 10/22/2019 - 03:30
Cryptosporidiosis is a significant cause of gastroenteritis in both humans and livestock in developing countries. The only FDA-approved drug available against the same is nitazoxanide, with questionable efficacy in malnourished children and immunocompromised patients. Recent in vitro studies have indicated the viability of Triacsin C as a potential drug candidate, which targets the parasite’s...
Mon, 10/21/2019 - 03:35
Increasingly variable hydrologic regimes combined with more frequent and intense extreme events are challenging water systems management worldwide. These trends emphasize the need of accurate medium‐ to long‐term predictions to timely prompt anticipatory operations. Despite in some locations global climate oscillations and particularly the El Niño Southern Oscillation (ENSO) may contribute to...
Sun, 10/20/2019 - 03:39
Author(s): Yingjie Wang, Zhengfei Xie, Qian Wu, Wanying Song, Liang Liu, Yongning Wu, Zhiyong GongAbstractCadmium-contaminated rice has been a serious food safety issue in China. In this research, carboxymethyl rice starch (CMS) from cadmium-contaminated rice and native rice was prepared to remove the cadmium in rice. The preparation of native rice starch (NRS) and starch from cadmium-...
Sun, 10/20/2019 - 03:38
Author(s): Leticia Rodrigues Alves, André Rodrigues dos Reis, Emilaine Rocha Prado, José Lavres, Georgia Bertoni Pompeu, Ricardo Antunes Azevedo, Priscila Lupino GratãoAbstractCadmium (Cd) contamination has generated an environmental problem worldwide, leading to harmful effects on human health and damages to plant metabolism. Selenium (Se) is non essential for plants, however it can improve...
Sun, 10/20/2019 - 03:31
In order to trace the source of Pb pollution in wheat, the contribution ratio of soil and atmospheric fallout source was quantified based on stable isotope ratios. Results showed that the average Pb content of soil was significantly lower than that of fallout, and Pb in the fallout had a higher weak acid fraction than soil. Pb in wheat had a distinct distribution in its tissues and the content of...
Fri, 10/18/2019 - 03:40
Author(s): Letícia Harumi Oshiquiri, Karina Roterdanny Araújo dos Santos, Sidnei Alves Ferreira Junior, Andrei Stecca Steindorff, Jomal Rodrigues Barbosa Filho, Thuana Marcolino Mota, Cirano José Ulhoa, Raphaela de Castro GeorgAbstractCadmium (Cd) is a heavy metal present in the environment mainly as a result of industrial contamination that can cause toxic effects to life. Some microorganisms,...
Fri, 10/18/2019 - 03:39
Author(s): Annette Petersen, Bodil Hamborg Jensen, Nathalie Michelle Löbl, Elsa Nielsen, Lea Bredsdorff, Sisse Fagt, Tue Christensen, Julie BobergAbstractThis study shows that dietary habits have an impact on contaminant exposures. A tool was developed to calculate chemical exposures for different Danish population groups. First, the tool divided the individuals into quartiles using a previously...
Fri, 10/18/2019 - 03:29
Abstract Aims Excessive boron (B) can pose toxicity to many plant species, and consequently restricts land utilization in B-laden regions. The purpose of this study was to identify “agretti” (Salsola soda) as an alternative B-tolerant food crop. Methods Both pot and hydroponic experiments were conducted for measuring biomass, total phenolic content and B absorption of S. soda exposed to varied...
Thu, 10/17/2019 - 03:37
Honey bees are important insect pollinators used heavily in agriculture and can be found in diverse environments. Bees may encounter toxicants such as cadmium and selenate by foraging on plants growing in contaminated areas, which can result in negative health effects. Honey bees are known to have a simple and consistent microbiome that conveys many benefits to the host, and toxicant exposure may...
Thu, 10/17/2019 - 03:36
Author(s): Longjiang Gu, Manli Zhao, Min Ge, Suwen Zhu, Beijiu Cheng, Xiaoyu LiAbstractBiological strategy of utilization of plants-microbe's interactions to remediate cadmium (Cd) contaminated soils is effective and practical. However, limited evidence at transcriptome level is available about how microbes work with host plants to alleviate Cd stress. In the present study, comparative...
Thu, 10/17/2019 - 03:32
Effect of base trehalose solution on quality of prepared weever during repeated freeze‐thaw cycles has been studied. L* (lightness), b* (yellowness), expressible moisture and total volatile base nitrogen (TVBN) of weever sample dipped in base trehalose solution reduced comparing with the control (without treatment), while pH, a* (redness), shear force, moisture content of treated samples...
Thu, 10/17/2019 - 03:32
Interactions of the flavoring compounds hexyl acetate (HxAc), heptyl acetate (HpAc), linalyl formate (LiFo), linalyl acetate (LiAc), geraniol, linalool, limonene, and myrcene with soy protein isolate (SPI) were estimated in pH 3.0, 6.0, and 9.0 aqueous solutions using headspace solid‐phase microextraction gas chromatography–mass spectrometry (SPME–GC–MS). The binding capacity of HxAc, HpAc, LiFo...
Thu, 10/17/2019 - 03:29
The use of leaded gasoline adversely affects cardiovascular, nervous, and immune systems. Study projects to rule out different variables of prognostic importance in lead-exposed subjects. A total of 317 traffic wardens with 5 years of outdoor experience and Hb levels < 10 µg/dl, and 100 traffic wardens with indoor duties were substituted in two groups. Levels of vitamins, cytokines, lead, iron...
Wed, 10/16/2019 - 03:32
The current research focuses on anaerobic respiration of arsenic and other toxic metals by purple nonsulfur bacteria (PNSB). Among the optimization assays performed were carbon utilization, cross metal resistance, and metal respiration, along with a comparison of each assay in photoheterotrophic and chemoheterotrophic growth. The bacteria were identified by the classification of 16S ribosomal RNA...
Wed, 10/16/2019 - 03:29
Although many proteins possess a distinct folded structure lying at a minimum in a funneled free energy landscape, thermal energy causes any protein to continuously access lowly populated excited states. The existence of excited states is an integral part of biological function. Although transitions into the excited states may lead...
Sun, 10/13/2019 - 03:43
Author(s): Hamdy A. Abdel-Gawwad, Mona S. Mohammed, Mohamed HeikalAbstractThe beneficial use of alkali-activation/sintering process in the fabrication of open-celled cellular materials and lead solidification/stabilization (S/S) is the biggest challenge of the present work. Waste glass (WG), red-clay brick waste (RCBW), and lead-bearing-sludge (LBS) were used as silicate-rich-wastes in the...
Sun, 10/13/2019 - 03:38
Author(s): Lixin Wang, Miaomiao Zheng, Shuping Zhang, Chuan Zhao, Weijun Kang, Ke WangAbstractCadmium, a typical heavy metal, causes serious toxicities on many organs and tissues. As the last partially controlled class of polybrominated diphenyl ethers (PBDEs), BDE209 can also induce various health issues. Although apoptosis mediated by mitochondria has been known to be a key player in inducing...
Sat, 10/12/2019 - 03:29
The objective of this study was to evaluate the effect of different cooking methods on the β-carotene content of jute mallow (Corchorus olitorius) leaves. Three cooking methods have been experimented. Jute mallow raw leaves was respectively boiled for 15 and 30 minutes in water (CW), in water containing ash leachate (CWA) and frying for 5 minutes followed by cooking with water (CWF) for 15 and 30...
Fri, 10/11/2019 - 03:41
by Shan Lu, Zhongyun Dong Proliferating cell nuclear antigen (PCNA) is essential for DNA replication and repair, and cell growth and survival. Previously, we identified a novel class of small molecules that bind directly to PCNA, stabilize PCNA trimer structure, reduce chromatin-associated PCNA, selectively inhibit tumor cell growth, and induce apoptosis. The purpose of this study was to...
Fri, 10/11/2019 - 03:37
Author(s): Diana Matos, Carina Sá, Paulo Cardoso, Adília Pires, Sílvia M. Rocha, Etelvina FigueiraAbstractRhizobia have a significant agronomic and environmental role and are eminent contributors to soil fertility. However, this group of microorganisms are affected by various environmental stresses, such as Cd contamination. High Cd concentrations change bacterial metabolism. During this...
Fri, 10/11/2019 - 03:37
Author(s): Florian Zindler, Franziska Beedgen, Diana Brandt, Madeleine Steiner, Daniel Stengel, Lisa Baumann, Thomas BraunbeckAbstractIn (eco)toxicology, there is a critical need for efficient methods to evaluate the neurotoxic potential of environmental chemicals. Recent studies proposed analysis of early coiling activity in zebrafish embryos as a powerful tool for the identification of...
Thu, 10/10/2019 - 03:37
Author(s): Surbhi Dabral, Yashaswee, Ajit Varma, Devendra Kumar Choudhary, Rajeev Nayan Bahuguna, Manoj NathAbstractPiriformospora indica is known for plant growth promotion and abiotic stress alleviation potential in several agricultural crops. However, a systemic analysis is warranted to explore potential application of this important fungus to augment heavy metal tolerance in rice. The present...
Wed, 10/09/2019 - 03:29
A hydroponic experiment was carried out to study the accumulation characteristics of copper (Cu) and lead (Pb) combined pollution in three ornamental plants. The results showed that these tested ornamental plants had higher tolerance to Cu–Pb combined pollution and could effectively accumulate the heavy metals. The Cu and Pb concentrations were higher in the roots of the ornamental plants than...
Wed, 10/09/2019 - 03:29
Detoxification of the highly toxic cadmium element is essential for the survival of living organisms. Pseudomonas putida CadR, a MerR family transcriptional regulator, has been reported to exhibit an ultraspecific response to the cadmium ion. Our crystallographic and spectroscopic studies reveal that the extra cadmium selectivity of CadR is mediated...
Sun, 10/06/2019 - 03:36
Author(s): Yakui Chen, Qifa Zhu, Xiangzhou Dong, Weiwei Huang, Chenyu Du, Diannan LuAbstractA novel strain Serratia marcescens HB-4 with high Cadmium adsorption capacity was isolated from heavy metal contaminated soil in Hunan province, China. S. marcescens HB-4 reduced the concentration of Cd present in wastewater to less than 0.1 mg/L when the inlet stream contained no higher than 5.0 mg/L Cd....
Sun, 10/06/2019 - 03:36
Author(s): M.O. Ibiwoye, Q. Matthews, K. Travers, J.D. FosterSummaryClinical and experimental studies have demonstrated the neurotoxic and behavioural effects of cadmium. However, the exact pathophysiological mechanism(s) of cadmium neurotoxicity on the human central nervous system (CNS) is not completely understood. A rat blood–brain barrier (BBB) endothelial marker, the endothelial barrier...
Sat, 10/05/2019 - 03:30
The use of pedunculate oak (Quercus robur L.), along with other tree species, for the afforestation of heavy metal contaminated lands is an attractive prospect. Little, however, is known of Q. robur tolerance and its antioxidative system response to heavy metal exposure. The main objective of the study was to determine the cadmium-induced changes in antioxidative system of pedunculate oak in an...
Fri, 10/04/2019 - 03:40
Author(s): Cristina García-Florentino, Maite Maguregui, Chiara Ciantelli, Alessandro Sardella, Alessandra Bonazza, Ignasi Queralt, Jose Antonio Carrero, Claudio Natali, Héctor Morillas, Juan Manuel Madariaga, Gorka AranaAbstractConstruction materials affected by black crusts (BCs) can be subjected to restoration, demolition, recycling or even to their management as waste products. Therefore, the...
Thu, 10/03/2019 - 03:37
Author(s): Xiaoxia Dong, Fan Yang, Shuping Yang, Changzhou YanAbstractCanna indica L. is a promising species for heavy metal phytoremediation due to its fast growth rate and large biomass. However, few studies have investigated cadmium (Cd) tolerance mechanisms. In the present study, Canna plants were cultivated under hydroponic conditions with increasing Cd concentrations (0, 5, 10, 15 mg/L). We...
Wed, 10/02/2019 - 03:35
Honey, pineapple, chilli pepper, and onion extracts were investigated for their ability to inhibit enzymatic browning in sweet potatoes. Honey had the highest inhibition (41.39%–48.0%), comparable with l‐ascorbic acid. Heated onion extract increased polyphenol oxidase (PPO) inhibition by 2.5‐fold when 4‐methylcatechol was used as substrate. However, percentage inhibition decreased drastically (7....
Tue, 10/01/2019 - 03:39
Author(s): Gabriela M. Chiocchetti, Teresa Latorre, María Jesús Clemente, Carlos Jadán-Piedra, Vicenta Devesa, Dinoraz VélezAbstractMushrooms can accumulate toxic trace elements. The objectives of the present study are to evaluate levels of mercury, cadmium, lead, and arsenic in dried mushrooms, to determine the effect of cooking on the contents of these elements, and to evaluate their...
Tue, 10/01/2019 - 03:38
Author(s): Bulat Kuluev, Elena Mikhaylova, Alexander Ermoshin, Svetlana Veselova, Anastasia Tugbaeva, Gulnar Gumerova, Karina Gainullina, Evgenia ZaikinaAbstractA small family of ARGOS genes encodes transmembrane proteins that act as negative regulators of ethylene signaling. Recent studies show that ARGOS genes are involved in the regulation of plant growth under the influence of stress factors...
Tue, 10/01/2019 - 03:30
Animal venoms are promising sources of novel drug leads, but their translational potential is hampered by the low success rate of earlier biodiscovery programs, in part reflecting the narrow selection of targets for investigation. To increase the number of lead candidates, here we discuss a phylogeny-guided approach for the rational selection of venomous taxa, using tarantulas (family...
Mon, 09/30/2019 - 17:10
Actinomycetes are remarkable producers of compounds essential for human and veterinary medicine as well as for agriculture. The genomes of those microorganisms possess several sets of genes (biosynthetic gene cluster (BGC)) encoding pathways for the production of the valuable secondary metabolites. A significant proportion of the identified BGCs in actinomycetes encode pathways for the...
Mon, 09/30/2019 - 17:10
For the past few decades, there has been limited progress in the development of novel antibacterials. Previously, we postulated that the gut microbiota of animals residing in polluted environments are a forthcoming supply of antibacterials. Among various species, the water monitor lizard is an interesting species that feeds on organic waste and the carcass of wild animals. Gut microbiota of the...
Mon, 09/30/2019 - 17:04
Author(s): Jie Zhang, Liang Li, Liping Huang, Manman Zhang, Ziyan Chen, Qingsong Zheng, Haiyan Zhao, Xi Chen, Mingyi Jiang, Mingpu TanAbstractThe plant-specific NAC transcription factors play diverse roles in various stress signaling. Alternative splicing is particularly prevalent in plants under stress. However, the investigation of cadmium (Cd) on the differential expression of the splice...
Mon, 09/30/2019 - 17:03
Author(s): Xu Yang, Rongkai Lin, Wenyuan Zhang, Yongkang Xu, Xin Wei, Chen Zhuo, Junhao Qin, Huashou LiAbstractSalt-tolerant rice cultivar (sea rice) is a research hotspot worldwide due to its high yield in high salinity soil. However, knowledge regarding the cadmium (Cd) effects on the growth of sea rice is limited. To determine the short-term and long-term impact of Cd stress, relatively low/...
Mon, 09/30/2019 - 16:54
ABSTRACT The opportunistic pathogenic fungus Candida albicans can cause devastating infections in immunocompromised patients. Its ability to undergo a morphogenetic transition from yeast to filamentous forms allows it to penetrate tissues and damage tissues, and the expression of genes associated with a number of pathogenetic mechanisms is also coordinately regulated with the yeast-to-hypha...
Sun, 09/29/2019 - 03:29
Author(s): Arthur Vinicius Sousa Silva, Lilian D. Moura Torquato, Glauber CruzAbstractThe replacement of fossil fuels by renewable sources has been discussed globally, because fossil fuels account for a large portion of the pollutant emissions into the atmosphere. Several cities along the Brazilian coast produce a variety of fish types, generating a large amount of waste, including viscera and...
Sat, 09/28/2019 - 03:28
Author(s): Subrata Banik, Mahmuda Akter, Serene Ezra Corpus Bondad, Takeshi Saito, Toshiyuki Hosokawa, Masaaki KurasakiAbstractCarvacrol is a monoterpenic phenol found in essential oils, is considered a safe food additive, and possesses various therapeutic properties. Numerous studies have also deciphered the protective role of carvacrol on various cytotoxicities. We clarify the effects of...
Thu, 09/26/2019 - 03:22
Cadmium (Cd) is an environmental pollutant of considerable interest throughout the world and potentially a neurotoxicant. Our recent data indicate that Cd exposure induces impairment of hippocampus-dependent learning and memory in mice. However, the underlying mechanisms for this defect are not known. The goal of this study was to determine if Cd inhibits adult neurogenesis and to identify...
Wed, 09/25/2019 - 03:34
Author(s): Mengyao Mu, Hongjing Zhao, Yu Wang, Juanjuan Liu, Dongxue Fei, Mingwei XingAbstractArsenic and copper are naturally occurring element. Contamination from natural processes and anthropogenic activities can be discovered all over the world and their unique interactions with the environment lead to widespread toxicity. When the content was excessive, the organism would be hurt seriously....
Wed, 09/25/2019 - 03:34
Author(s): Aneta Spyra, Anna Cieplok, Małgorzata Strzelec, Agnieszka BabczyńskaAbstractIn this study we focused on Physella acuta, an alien snail species in order to determine their ability of bioaccumulation of heavy metals in their shells, bodies, the difference in accumulation in relation to age classes, and the influence of ecological variables on the community composition and density. On the...
Wed, 09/25/2019 - 03:34
Author(s): Jaime Rodríguez-Estival, Carlos Morales-Machuca, Jennifer Pareja-Carrera, Manuel E. Ortiz-Santaliestra, Rafael MateoAbstractHere we characterize the bioaccumulation of mercury (Hg) and lead (Pb) in red swamp crayfish (Procambarus clarkii) from two river courses in Central Spain that are impacted by historical Hg and Pb mining activities, respectively. We estimate the absolute oral...
Wed, 09/25/2019 - 03:27
Cadmium (Cd) is a toxic element widely distributed in the aquatic environment and producing a wide variety of harmful effects. In this study, the acute toxicity (96 h LC50) of Cd to rainbow trout Oncorhynchus mykiss embryos and larvae was determined. The obtained results showed that hatched larvae were the most sensitive to Cd exposure. After 4 days of exposure, embryos were found to have...

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