Heavy Metals

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Thu, 03/25/2021 - 02:02
The purpose of this study was to explore the usefulness of Great Shearwater (Ardenna gravis) as a bioindicator for biomonitoring programs for metal pollution. Three different metals were analysed in liver, kidney, and feathers, including cadmium, lead, and zinc. Glutathione-S-transferase, malondialdehyde, reduced glutathione, and catalase were assessed as oxidative stress biomarkers. Sex-related...
Wed, 03/24/2021 - 08:02
by Ans Vercammen, Alexandru Marcoci, Mark Burgman Groups have access to more diverse information and typically outperform individuals on problem solving tasks. Crowdsolving utilises this principle to generate novel and/or superior solutions to intellective tasks by pooling the inputs from a distributed online crowd. However, it is unclear whether this particular instance of “wisdom of the crowd”...
Tue, 03/23/2021 - 06:10
Author(s): Afzal Hussain, Muhammad Rizwan, Shafaqat Ali, Muhammad Zia ur Rehman, Muhammad Farooq Qayyum, Rab Nawaz, Awais Ahmad, Muhammad Asrar, Sajid Rashid Ahmad, Abdulaziz Abdullah Alsahli, Mohammed Nasser Alyemeni Cadmium (Cd) accumulation in arable lands has become a serious matter for food security. Among various approaches, the application of nanoparticles (NPs) for remediation of...
Tue, 03/23/2021 - 02:02
Marine debris and trace metals are among the common environmental contaminants known to affect marine organisms. In this study, the quantitative and qualitative aspects of marine debris levels and bioaccumulation of trace metals (Cadmium: Cd; Copper: Cu; Lead: Pb; and Zinc: Zn) were investigated in 42 green sea turtles (Chelonia mydas) stranded on the northern coast of the Sea of Oman. The...
Tue, 03/23/2021 - 00:01
Combined papermill biosolids (PB) and forest-derived alkaline by-products are known for their direct benefits to agricultural crops, but their residual effects after several years of application have received little attention. A 10 yr field study was initiated on a loamy soil at Yamachiche, QC, to assess the residual effects of PB application after nine consecutive years, either alone or with...
Mon, 03/22/2021 - 22:07
Aquaculture Nutrition, EarlyView. The present experiment containing two dietary cadmium (Cd) levels (0 and 5 mg/kg) and two lipoic acid (LA) levels (0 and 600 mg/kg) was carried out to investigate the effects of dietary Cd on the growth, antioxidant capacity, immunity and intestine morphology of Macrobrachium nipponense and the alleviation effects of LA. We found that dietary Cd and LA had no...
Mon, 03/22/2021 - 16:00
African countries face key challenges in the deployment of GM crops due to incongruities in the processes for effective and efficient commercial release while simultaneously ensuring food and environmental safety. Against the backdrop of the preceding scenario, and for the effective and efficient commercial release of GM crops for cultivation by farmers, while simultaneously ensuring food and...
Mon, 03/22/2021 - 06:08
Author(s): Ling Zheng, Ya-Lin Jiang, Jun Fei, Peng Cao, Chen Zhang, Guo-Fang Xie, Li-Xiang Wang, Wei Cao, Lin Fu, Hui Zhao Environmental cadmium (Cd) exposure can cause several pulmonary diseases. Epithelial-mesenchymal transition (EMT) involved in the process of chronic obstructive pulmonary disease (COPD). However, the association between environmental Cd exposure and EMT was unclear in COPD...
Sat, 03/20/2021 - 06:14
Author(s): Xi Tian, He Xiao, Yaobin Liu, Weirong Ding The recycling of secondary resources is complicated as consumers, recyclers and governments are all involved in this process. In developing countries, compared to legal recyclers, illegal recyclers not only have cost advantages but also create serious pollution. Inappropriate management policies may cause disorder in the recycling market or...
Sat, 03/20/2021 - 04:02
Both overproduced reactive oxygen species/reactive nitrogen species and hyperglycemic conditions accompany a significant increase in protein glycation and nitration that contribute to the initiation and progression of diabetic complications and neuronal disorders. In this study, 19 compounds, including steroidal saponins, alkaloids, cerebroside, phenolic compounds, sterols, and nucleosides, were...
Sat, 03/20/2021 - 02:03
The bioaccumulation of arsenic (As) in the muscle, liver, kidneys, and brain of the shark Sphyrna lewini was measured in 40 juvenile specimens from southeast Gulf of California. Additionally, the biomagnification factor was calculated through prey items from stomach contents of the analyzed specimens. The concentrations of As (mg kg−1, wet weight) were higher in the muscle (10.1 ± 0.3) and liver...
Fri, 03/19/2021 - 16:00
Arsenic mobilization in groundwater systems is driven by a variety of functionally diverse microorganisms and complex interconnections between different physicochemical factors. In order to unravel this great ecosystem complexity, groundwaters with varying background concentrations and speciation of arsenic were considered in the Po Plain (Northern Italy), one of the most populated areas in...
Fri, 03/19/2021 - 10:02
Quinoline antimalarials cause drug-induced electrocardiographic QT prolongation, a potential risk factor for torsade de pointes. The effects of currently used antimalarials on the electrocardiogram (ECG) were assessed in pregnant women with malaria. Pregnant women with microscopy-confirmed parasitemia of any malaria species were enrolled in an open-label randomized controlled trial on the...
Fri, 03/19/2021 - 00:00
Food can be contaminated by various types of contaminants such as mycotoxins and toxic heavy metals. Therefore, it is very likely that simultaneous intake of more than one type of food contaminant by consumers may take place, which provides a strong rationale for investigating the combined toxicities of these food contaminants. Patulin is one of the most common food-borne mycotoxins, whereas...
Thu, 03/18/2021 - 08:03
The use of whole citrus fruits in the food industry means that the valuable peel is used, but this may raise palatability or health concerns among consumers. The content of sugars, dietary fibre, redox compounds, lead, and cadmium was compared in citrus fruits (orange; pomelo; mandarin; lemon; key lime; and red, yellow, and green grapefruit). The pulp of all fruits contained significantly less...
Thu, 03/18/2021 - 06:12
Author(s): Kan Shao, Zheng Zhou, Pengcheng Xun, Samuel M. Cohen Abundant epidemiological evidence has shown that there is a strong causal relationship between long-term exposure to inorganic arsenic (iAs) through drinking water and a few types of cancer (e.g., lung and bladder cancer). Traditionally, a linear low-dose extrapolation assumption was applied in risk assessment for iAs which resulted...
Thu, 03/18/2021 - 02:02
Abstract Purpose This study aimed to explore the phytoremediation potential of Salvia tiliifolia for cadmium (Cd)-contaminated soils and to understand the interactions in soil-Cd-plant systems. Methods We assessed the Cd tolerance and accumulation characteristics of S. tiliifolia grown in soils with 0, 5, 25, and 50 mg kg− 1 Cd for 3 months. We also analysed the changes in physicochemical...
Thu, 03/18/2021 - 00:00
The primary focus of our research was to obtain global gene expression data in baker’s yeast exposed to sub-lethal doses of quantum dots (QDs), such as green-emitting CdSe/ZnS and InP/ZnS, to reveal novel insights on their unique mechanisms of toxicity. Despite their promising applications, their toxicity and long-lasting effects on the environment are not well understood. To assess toxicity, we...
Wed, 03/17/2021 - 16:00
Macrofungi, which are also known as mushrooms, can produce various bioactive constituents and have become promising resources as lead drugs and foods rich in nutritional value. However, the production of these bioactive constituents under standard laboratory conditions is inefficiency due to the silent expression of their relevant genes. Coculture, as an important activation strategy that...
Tue, 03/16/2021 - 14:04
Sample pre-treatment plays an important role in sample analysis, which directly affects the accuracy and reliability of the results. In this work we studied the influence of three common sample pre-treatment methods (direct injection, microwave digestion and wet digestion) on the determination of lead (Pb) content of Chinese health-care wines by graphite furnace atomic absorption spectrometry (...
Mon, 03/15/2021 - 02:02
In this study, a higher metal ions-resistant bacterium, Stenotrophomonas rhizophila JC1 was isolated from contaminated soil in Jinchang city, Gansu Province, China. The Pb2+ (120 mg/L) and Cu2+ (80 mg/L) removal rate of the strain reached at 76.9% and 83.4%, respectively. The genome comprises 4268161 bp in a circular chromosome with 67.52% G + C content and encodes 3719 proteins. The genome...
Fri, 03/12/2021 - 16:00
Prokaryotic tolerance to inorganic arsenic is a widespread trait habitually determined by operons encoding an As (III)-responsive repressor (ArsR), an As (V)-reductase (ArsC), and an As (III)-export pump (ArsB), often accompanied by other complementary genes. Enigmatically, the genomes of many environmental bacteria typically contain two or more copies of this basic genetic device arsRBC. To shed...
Fri, 03/12/2021 - 10:02
Within the landscape of globally distributed pathogens, populations differentiate via both adaptive and nonadaptive forces. Individual populations are likely to show unique trends of genetic diversity, host-pathogen interaction, and ecological adaptation. In plant pathogens, allopatric divergence may occur particularly rapidly within simplified agricultural monoculture landscapes. As such, the...
Fri, 03/12/2021 - 06:08
Author(s): Wenxuan Dong, Gang Liu, Kanglei Zhang, Yun Tan, Hui Zou, Yan Yuan, Jianhong Gu, Ruilong Song, Jiaqiao Zhu, Zongping Liu Nuclear factor erythroid 2-related factor 2 (Nrf2) is a nuclear transcription factor of great concern which is widely involved in physiological and pathological processes of the organism, but the role and regulatory mechanism of Nrf2 in kidney exposed to cadmium (Cd)...
Fri, 03/12/2021 - 06:08
Author(s): Fasih Ullah Haider, Jeffrey A. Coulter, Sardar Alam Cheema, Muhammad Farooq, Jun Wu, Renzhi Zhang, Guo Shuaijie, Cai Liqun Sole biochar addition or microbial inoculation as a soil amendment helps to reduce cadmium (Cd) toxicity in polluted agricultural soils. Yet the synergistic effects of microorganisms and biochar application on Cd absorption and plant productivity remain unclear....
Fri, 03/12/2021 - 02:02
Used oyster shells are considered a waste product of the seafood industry. Herein, we hypothesize that oyster shells can be used as a raw ingredient to synthesize effective sorbents. This study investigated the lead sorption ability of modified oyster shells [phosphoric-acid treated oyster shell (POS) and oyster shells with phosphoric acid (OS + P)] from water. XRD confirmed the presence of...
Thu, 03/11/2021 - 16:00
Contamination of agricultural soil by arsenic (As) is a serious menace to environmental safety and global food security. Symbiotic plant–microbe interaction, such as arbuscular mycorrhiza (AM), is a promising approach to minimize hazards of As contamination in agricultural soil. Even though the potential of AM fungi (AMF) in redeeming As tolerance and improving growth is well recognized, the...
Thu, 03/11/2021 - 16:00
Cadmium (Cd) pollution in soils is an increasing problem worldwide, and it affects crop production and safety. We identified Cd-tolerant and -sensitive cultivars by testing 258 accessions of Medicago truncatula at seedling stage, using the relative root growth (RRG) as an indicator of Cd tolerance. The factorial analysis (principal component analysis method) of the different growth parameters...
Thu, 03/11/2021 - 00:00
Multiplex polymerase chain reaction (mPCR) is increasingly being used to diagnose infections caused by respiratory pathogens in pediatric inpatient facilities. mPCR assays detect a broader array of viruses, with higher specificity and sensitivity and faster turnaround than previous assays. We adapted the FilmArray Respiratory Panel (FA-RP) for diagnosing respiratory infections. FA-RP is an in...
Wed, 03/10/2021 - 02:02
Application of organics in soil can reduce uptake of arsenic (As) in food crops grown on soil spiked with As. However, the results may be different if the crop is grown with As-contaminated irrigation water. In this study, a modest initiative has been undertaken to assess the organo-arsenic equilibria using the fulvic and humic extracted from paddy husk (PH), vermicompost (VC), and soil. The...
Tue, 03/09/2021 - 10:04
In the metallophilic beta-proteobacterium Cupriavidus metallidurans, the plasmid-encoded Czc metal homeostasis system adjusts the periplasmic zinc, cobalt and cadmium concentration, which influences subsequent uptake of these metals into the cytoplasm. Behind this shield, the PIB2-type APTase ZntA is responsible for removal of surplus cytoplasmic zinc ions, thereby providing a second level of...
Tue, 03/09/2021 - 06:12
Author(s): Mingkun Zhu, Sasa Miao, Wenting Zhou, Shaaban Saad Elnesr, Xinyang Dong, Xiaoting Zou The occurrence of cadmium (Cd) in feed is a major problem in animal health and production. Studies have confirmed that Cd depresses egg production of laying hens, which is closely related to follicular atresia. This study aimed to assess the toxic impacts of Cd on the ovarian tissue, and to examine...
Mon, 03/08/2021 - 22:08
Journal of the Science of Food and Agriculture, Accepted Article. Cadmium uptake by cacao plants can affect plant growth, consumer's health, and commercialisation. To develop mitigation strategies is essential to know what soil characteristics could influence this absorption. To determine the relation of cadmium absorption and soil characteristics of cacao areas, the response at concentrations of...
Mon, 03/08/2021 - 08:02
A hydroponic experiment was conducted to evaluate the role of potassium (K) in tomato plant growth exposed to cadmium (Cd) stress. In this work, the effects of three potassium nutrition regimes (155, 232 and 310 ppm of K) combined with Cd at different levels (0, 12 and 25 µM of CdCl2) on chlorophyll content index, root and shoot dry weights, root morphology, chlorophyll a fluorescence and...
Sun, 03/07/2021 - 06:10
Author(s): Kathlene Cleah D. Benitez, Flordeliza D. Cambia, Riza Jane S. Banicod, Karl Bryan S. Perelonia, Gezelle C. Tadifa, Bryan E. Tanyag, Ana Trinidad F. Rivera, Ulysses M. Montojo Scallop, specifically Bractechlamys vexillum is one of the economically important fishery resources in Central Philippines. However, international trade can be constrained due to high concentrations of cadmium (Cd...
Sun, 03/07/2021 - 06:10
Author(s): Guowei Shu, Qiqi Zheng, Li Chen, Fufeng Jiang, Chunji Dai, Yao Hui, Guanli Du Cadmium (Cd) is a non-degradable heavy metal pollutant, which is harmful to human health. The aim of this study is to screen out excellent Lactic acid bacteria strains for cadmium removal. Among the tested 35 strains of lactic acid bacteria, 12 strains with strong Cd-resistant and cadmium removal ability were...
Sat, 03/06/2021 - 02:02
The input of heavy metals in agricultural systems depresses the soil quality and compromises the food safety owing to crop contamination. Metals also affect the structure, morphology, function, and activity of microorganisms in soils and substrates. Heavy metals can inhibit basic processes of microbial metabolism such as respiration. The present study aimed (i) to assess the relationship between...
Fri, 03/05/2021 - 02:02
Phytoremediation is a green, simple, eco-friendly, sustainable, and cost-effective remediation technology to remove and degrade contaminants from soil. In this study, a germination experiment and a pot experiment were performed in greenhouse to evaluate cadmium toxicity and phytoremediation capacity. The results showed that there was the highest membership function value of cadmium (MFVC) in KFJT...
Wed, 03/03/2021 - 02:03
Abstract Bioremediation of toxic metal ions using bacterial strains is a promising tool. Metal binding motifs in microbial proteins are involved in the regulation and transport of such toxic metals for metal detoxification. A bacterial strain designated TWSL_4 with metal (Cu, Cd, and Pb) resistance and removal ability was isolated and identified as a Bacillus megaterium strain using 16S rRNA...
Tue, 03/02/2021 - 04:02
Development of simple, sensitive, and reliable fluorescence sensors for monitoring the residue, distribution, and variation of organophosphorus pesticides (OPs) in agricultural crops is highly urgent but remains challenging, which is ascribed to deprivation of an ideal fluorophore and ingenious detection strategy. Herein, we report the fabrication of cadmium telluride quantum dots (CdTe QDs) with...
Tue, 03/02/2021 - 02:02
Norovirus contamination of oysters is the lead cause of non-bacterial gastroenteritis and a significant food safety concern for the oyster industry. Here, norovirus reduction from Pacific oysters (Crassostrea gigas), contaminated in the marine environment, was studied in laboratory depuration trials and in two commercial settings. Norovirus concentrations were measured in oyster digestive tissue...
Mon, 03/01/2021 - 02:02
Abstract Background and aims Rice accumulates higher levels of cadmium (Cd) in grain than other cereals, and hybrid rice varieties cover around half of the total rice area in China. Therefore, understanding the phenotypic and genetic characteristics of Cd accumulation in rice hybrids is vital for food safety. Methods An incomplete diallel cross design was used to analyse the heritability and...
Fri, 02/26/2021 - 08:02
by Niladri S. Kar, Daniel Ferguson, Nianli Zhang, Erik I. Waldorff, James T. Ryaby, Joseph A. DiDonato Pulsed-electromagnetic-field (PEMF) treatment was found to enhance cellular differentiation of the mouse preosteoblast, MC3T3-E1, to a more osteoblastic phenotype. Differentiation genes such as Alp, BSPI, cFos, Ibsp, Osteocalcin, Pthr1 and Runx2 showed increased expression in response to PEMF...
Thu, 02/25/2021 - 16:00
Vitamin A deficiency remains a common public health problem among the rice-dependent poor people in the developing countries of Asia. Conventional milled rice does not contain provitamin A (β-carotene) in is edible part (endosperm) and is also deficient in essential minerals, such as iron and zinc. Transgenic Golden Rice event GR2E, which produces β-carotene in its endosperm, was used as a parent...
Thu, 02/25/2021 - 06:14
Author(s): Jin Chen, Pan Jin, Shimin Huang, Yeshan Guo, Fengxiao Tan, Jianwu Wang, Yinghua Shu We executed a pot experiment to examine the differences of absorption, chemical forms, subcellular distribution, and toxicity of Cd between two cultivars of Chinese flowering cabbage Brassica campestris [Lvbao701 (low-Cd cultivar) and Chicaixin No.4 (high-Cd cultivar)]. Compared to Chicaixin No.4, the...
Wed, 02/24/2021 - 10:03
ABSTRACT Most antimicrobials currently in the clinical pipeline are modifications of existing classes of antibiotics and are considered short-term solutions due to the emergence of resistance. Pseudomonas aeruginosa represents a major challenge for new antimicrobial drug discovery due to its versatile lifestyle, ability to develop resistance to most antibiotic classes, and capacity to form robust...
Tue, 02/23/2021 - 08:03
To overcome the severe toxicity and blind absorption zone of conventional lead-based shielding materials for X-rays in the 70–90 keV range, the lead-free multilayered polymer composites were designed and fabricated. The effects of the direction of incidence of the X-rays and number of layers as well as layer thickness ratio of the (tungsten/ethylene-octene copolymer)/(bismuth/ethylene-octene...
Tue, 02/23/2021 - 08:03
Acetogenic bacteria use cellular redox energy to convert CO2 to acetate using the Wood–Ljungdahl (WL) pathway. Such redox energy can be derived from electrons generated from H2 as well as from inorganic materials, such as photoresponsive semiconductors. We have developed a nanoparticle-microbe hybrid system in which chemically synthesized cadmium sulfide...
Tue, 02/23/2021 - 06:14
Author(s): Xia Zhao, Shengchen Wang, Xiaojing Li, Honggui Liu, Shiwen Xu Cadmium (Cd) is one common environmental pollutant with systemic toxicity. Lipoxin A4 (LXA4) can regulate transforming growth factor-β (TGF-β) pathway and alleviate tissue injury via binding to formyl peptide receptor 2 (FPR2). The activation of nuclear factor-κB (NF-κB) pathway can promote the occurence of necroptosis....
Tue, 02/23/2021 - 02:02
Abstract Field-scale experiments were conducted to assess biochar’s ability with and without supplements to sequester heavy metals of lead (Pb2+) and zinc (Zn2+) from stream water contaminated by abandoned mines. The study was conducted at the Frongoch mine watercourse site in central Wales for 1104 h (46 days). The methods employed include pyrolysis of waste Leylandii feedstocks at 700 °C and...

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