Heavy Metals

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Wed, 08/12/2020 - 06:14
Author(s): Jonaina Fiorim, Maylla Ronacher Simões, Bruna Fernandes de Azevedo, Rogério Faustino Ribeiro, Leonardo dos Santos, Alessandra Simão Padilha, Dalton Valentim Vassallo Lead induces endothelial dysfunction and hypertension in humans and animals. Seven-day exposure to a low dose in rats reduces vasocontractile responses and increases nitric oxide (NO) bioavailability. We hypothesized that...
Tue, 08/11/2020 - 22:15
Significance and Impact of the Study: The occurrence and severity of fungal infections have increased in recent decades due to resistance to available antifungal drugs and the appearance of new emerging pathogens. Thus, the search for new antifungal agents is mandatory. From a series of 23 cinnamyl Schiff bases, two compounds (1 and 23) were interrogated as new anticryptococcal agents without...
Tue, 08/11/2020 - 04:02
Plant diseases caused by viruses and fungi have posed a serious threat to global agricultural production. The discovery of new leads based on natural products is an important way to innovate pesticides. In this work, natural product luotonin A was found to have good antiviral activity against tobacco mosaic virus (TMV) for the first time. A series of luotonin A derivatives were designed,...
Sun, 08/09/2020 - 06:12
Author(s): Ewa Muszyńska, Mateusz Labudda In the present research, Silene vulgaris as a representative species growing on both unpolluted and heavy metal (HM) polluted terrains were used to identify ecotype-specific responses to metallic stress. Growth, cell ultrastructure and element accumulations were compared between non-metallicolous (NM), calamine (CAL) and serpentine (SER) specimens...
Sun, 08/09/2020 - 00:00
In humans, sexual dimorphism can manifest in many ways and it is widely studied in several knowledge fields. It is increasing the evidence that also cells differ according to sex, a correlation still little studied and poorly considered when cells are used in scientific research. Specifically, our interest is on the sex-related dimorphism on the human mesenchymal stem cells (hMSCs) transcriptome...
Sat, 08/08/2020 - 06:18
Author(s): Talha Burki Mainly resulting from cookware and recycled batteries, lead exposure, even at low concentrations, can result in cognitive and neurological problems. Talha Burki reports.
Fri, 08/07/2020 - 14:08
To evaluate the effects of exogenous selenium on cadmium tolerance and accumulation in two varieties of cucumber, pot experiments with cadmium at 10 mg/kg soil were conducted. Plant biomass, cadmium bioaccumulation, cadmium speciation, and antioxidative enzyme activity, including superoxide dismutase, catalase, peroxidase, and ascorbate peroxidase were determined. Exogenous selenium (1 mg/L for...
Fri, 08/07/2020 - 02:02
The pollution of agricultural soil due to heavy metals is a serious environmental problem throughout the world due to their persistence and toxicity. The present study was carried out on agricultural soils of district Bathinda, Punjab where a total of 120 soil samples were collected from 40 different locations during pre-monsoon, monsoon, and post-monsoon season. The total mean concentration of...
Thu, 08/06/2020 - 06:28
Author(s): Manisha Gautam, Shivani Katoch, Rakesh Kumar Chahota Macrotyloma uniflorum (Lam.) Verdc. (family Fabaceae) is traditionally important pulse used for kidney stone degradation, cold, cough, asthma and in bronchial issues. It is well reported for the antilithiatic activity and nutritional profiling but no attempt has been made to find out the mechanism and nutrient responsible for the...
Thu, 08/06/2020 - 06:22
Author(s): Zhenyan Dai, Jia Cheng, Lingsheng Bao, Xin Zhu, Honghui Li, Xiao Chen, Yu Zhang, Jianshe Zhang, Wuying Chu, Yaxiong Pan, Huang Huang The present study was performed to determine the effect of waterborne cadmium (Cd) exposure on oxidative stress, autophagy and mitochondrial dysfunction, and to explore the mechanism of Cd-induced liver damage in freshwater teleost Procypris merus. To...
Wed, 08/05/2020 - 16:00
Oryza sativa L. is a worldwide food-crop frequently growing in cadmium (Cd)/arsenic (As) polluted soils, with its root-system as the first target of the pollutants. Root-system development involves the establishment of optimal indole-3-acetic acid (IAA) levels, also requiring the conversion of the IAA natural precursor indole-3-butyric acid (IBA) into IAA, causing nitric oxide (NO) formation....
Wed, 08/05/2020 - 06:13
Author(s): Boris A. Katsnelson, Svetlana V. Klinova, Oksana P. Gerzen, Alexander A. Balakin, Oleg N. Lookin, Ruslan V. Lisin, Salavat R. Nabiev, Larisa I. Privalova, Ilzira A. Minigalieva, Vladimir G. Panov, Leonid B. Katsnelson, Larisa V. Nikitina, Daniil A. Kuznetsov, Yuri L. Protsenko
Wed, 08/05/2020 - 06:12
Author(s): Esther U. Kadiene, Baghdad Ouddane, Hong-Yi Gong, Min-Sub Kim, Jae-Seong Lee, Yen-Ju Pan, Jiang-Shiou Hwang, Sami Souissi In this study, the whole transcriptome and sex-specific differential gene expression of the copepod Pseudodiaptomus annandalei exposed to cadmium (Cd) were investigated. P. annandalei were exposed to 40 μg/L Cd from the naupliar stage to male and female adults. High...
Wed, 08/05/2020 - 06:12
Author(s): Zhang Jiayong, Wang Shengchen, Hao Xiaofang, Sun Gang, Xu Shiwen Recent studies identified a novel programmed and regulated cell death that was characterized by a necrotic cell death morphology, termed necroptosis. Lead (Pb) is known as a persistent inorganic environmental pollutant that affects the health of humans and animals worldwide. However, there are no detailed reports of Pb-...
Wed, 08/05/2020 - 06:12
Author(s): Lingyuan Yu, Xumin Chen, Ying Wei, Yanjuan Ding, Qiwei Wang, Shaohua Wang, Bin Tang, Shigui Wang Trehalose is the major blood sugar in insects; it not only serves as an energy source but also plays important roles in physiological responses to adverse conditions. However, only a few studies have explored the effects of heavy metal exposure stress on trehalose metabolism in insects....
Tue, 08/04/2020 - 02:03
Sensitivity of tropical freshwater microalgae (Mesotaenium sp., Chlorococcum sp. and Scenedesmus sp.) to environmentally relevant concentrations of hexavalent chromium (Cr6+) and cadmium (Cd2+) was compared individually in three growth media viz. Bold’s Basal Medium (BBM), Test Medium 1 (TM1) and Test Medium 2 (TM2) based on fluorescence reduction. Free metal content of growth media was...
Mon, 08/03/2020 - 06:15
Author(s): Chunhao Gu, Brianne A. Gates, Andrew J. Margenot Phosphorus (P) usage and water quality concerns are associated with using phosphate-based amendments to remediate lead (Pb) contaminated soils in urban areas. Struvite has gained increasing attention in the last decade to recover P from point sources while being used as a novel P fertilizer with reduced P loss risk, but its potential for...
Sat, 08/01/2020 - 06:21
Author(s): Rili Hao, Xinyu Song, Feng Li, Xintong Tan, Dongxiao Sun-Waterhouse, Dapeng Li Exposure to nonbiodegradable cadmium (Cd) causes many health problems including the damage to the nervous system. This study aimed to increase knowledge about its neurotoxic effects and the neuroprotective potential of caffeic acid phenethyl ester (CAPE, a polyphenol abundant in honeybee propolis). In mice,...
Sat, 08/01/2020 - 06:20
Author(s): Guilherme Deomedesse Minari, Luciana Maria Saran, Milena Tavares Lima Constancio, Rafael Correia da Silva, David Luciano Rosalen, Wanderley José de Melo, Lúcia Maria Carareto Alves Soil management using fertilizers can modify soil chemical, biochemical and biological properties, including the concentration of trace-elements as cadmium (Cd), chromium (Cd) and nickel (Ni). Bacterial...
Fri, 07/31/2020 - 06:16
Author(s): Xiaoshan Huang, Hongliang Zhao, Chengyan Wang, Xinfang Zhang The use of lead brass is increasingly restricted because of the harmful effects of lead on human function and the natural environment. However, how to separate the large amount of lead in existing brass scrap in green, energy-saving and efficient manner is a serious problem. In this study, the effect of pulsed electric...
Fri, 07/31/2020 - 04:02
Heavy metals (HMs) are an indispensable part of industrial and agricultural development. As the cradle of China's industry and an important province for agricultural production, Jilin Province has been concerned about the pollution of HMs in the local environment and grains. In this paper, we chose four HMs that are more harmful to humans: inorganic arsenic (iAs), cadmium (Cd), methylmercury (...
Fri, 07/31/2020 - 02:02
Globally, heavy metal (HM) pollution of soil is a serious problem that can lead to long-term toxic effects on soil. In this milieu, the present study investigated the eco-toxicological effects of three trace elements, e.g., cadmium (Cd), copper (Cu), and lead (Pb), on enzyme activities and microbial function and structural diversity in phaeozem and red soil samples. Hormesis effects of Cd, Cu,...
Thu, 07/30/2020 - 14:07
Lead (Pb) is a toxic metal that can accumulate in the body and negatively impact human health. In this study, we prepared a highly sensitive and specific monoclonal antibody, 2C3, that can recognize Pb(II) with an IC50 and linear range of 0.5 ng/mL and 0.08–1.86 ng/mL, respectively. Additionally, based on this antibody we developed a fluorescent test strip, which can be used for both qualitative...
Thu, 07/30/2020 - 02:04
Abstract Chickpea (Cicer arietinum) belonging to the Fabaceae family is a major legume crop and is a good source of protein and carbohydrates. Industrialization has resulted in soil contamination with heavy metals such as cadmium. Adsorption of cadmium by plants can lead to reduced yields and heavy metal toxicity. In the current study, changes in the anatomical, morphological features and...
Thu, 07/30/2020 - 02:02
The present study focuses on the simultaneous analysis of metallic species and radionuclide data from January 2009 to December 2011 in the dust deposited on filters in Málaga (Spain). Some metallic elements (Ca, Fe, K, Mg, Na, Zn, Pb, Cu, Ni) and radionuclides (7Be and 210Pb) have been determined by inductively coupled plasma-mass spectroscopy and gamma spectrometry, respectively. For this...
Wed, 07/29/2020 - 02:03
Phytoremediation is an ecologically and economically feasible technique to remove heavy metal from soil. The aim of the study was to examine cadmium (Cd) toxicity and phytoremediation aptitude of Brassica juncea. In the present study, plants survived when exposed to different levels of Cd (0, 25, 50 and 100 mg/kg soil) and accumulated a large amount of Cd in its root and shoot. Translocation...
Tue, 07/28/2020 - 16:00
Previous studies proved that heavy metals could increase the risk of disease by acting on the gut microbiota. Meanwhile, gut microbiota played important roles in detoxifying heavy metals. However, the response of gut microbiota to heavy metals and which microbes dominated this detoxification processes are still unclear. This study investigated the difference of high-fat-diet (HFD) and normal-diet...
Tue, 07/28/2020 - 02:02
In this study, a magnetic montmorillonite composite (MMC) was prepared by a coprecipitation method, evaluated as sorbent for Cd(II) ions and characterized by IR spectroscopy, SEM, EDX, VSM, and zeta potential measurement. The adsorption potential of MMC was tested in both batch and continuous modes at different initial pH levels, sorbent dosages, contact times, ionic strengths, flow rates, and...
Sat, 07/25/2020 - 18:02
This research deals with a highly efficient, selective, low-cost, and recyclable adsorbent for the fast removal of lead (Pb)(II) ions from aqueous solutions, and an investigation of the related adsorption mechanisms. Three types of materials were prepared from pea peels waste using simple, energy-efficient and environmentally friendly treatment. Obtained adsorbents were characterized by elemental...
Fri, 07/24/2020 - 02:02
Quantum dots (QDs), such as cadmium selenide (CdSe) and lead selenide (PbSe) exhibit excellent optical, magnetic and chemical properties due to their extremely size (ca. 1–10 nm) and are attractive semiconductor nanomaterials for optical studies and energy storage. In this study, aqueous synthesis of CdSe and PbSe QDs in a size range of 2–10 nm was described. Synthesized QDs were characterized...
Fri, 07/24/2020 - 02:02
Phytoremediation is a cost-effective and relatively cleaner method for remediating contaminated areas using plants. Certain plants, including some sunflower species, have already been identified as potential phytoremediation candidates because of their ability to accumulate heavy metals. This study investigated the ability of Tithonia rotundifolia (red sunflower) to accumulate lead from lab-...
Thu, 07/23/2020 - 10:01
Alveolar echinococcosis (AE), caused by the larval stage of the cestode Echinococcus multilocularis, is a lethal disease in humans. Novel therapeutic options are urgently needed since the current chemotherapy displays limited efficiency in AE treatment. In this study, we assessed the in vitro and in vivo effects of the epidermal growth factor receptor (EGFR)/MEK/extracellular signal-regulated...
Thu, 07/23/2020 - 10:01
Novel antiparasitic activity was observed for the antifungal occidiofungin. It efficaciously and irreversibly inhibited the zoonotic enteric parasite Cryptosporidium parvum in vitro with limited cytotoxicity (50% effective concentration [EC50] = 120 nM versus 50% cytotoxic concentration [TC50] = 988 nM), and its application disrupted the parasite morphology. This study expands the spectrum of...
Wed, 07/22/2020 - 16:00
Metallothioneins (MTs) are low molecular weight, Cys-rich proteins that sequester both essential and non-essential metal ions. Despite being highly conserved in the Pseudomonas genus of Gram-negative bacteria, knowledge of their physiological function in this species is scarce. Using the strain P. fluorescens Q2-87 as a model organism, we investigated the role of a conserved MT in zinc...
Wed, 07/22/2020 - 08:02
Although the Flint, Michigan, water crisis renewed concerns about lead (Pb) in city drinking water, little attention has been paid to Pb in private wells, which provide drinking water for 13% of the US population. This study evaluates the risk of Pb exposure in children in households relying on private...
Wed, 07/22/2020 - 06:13
Author(s): Hamdy A. Abdel-Gawwad, Samah A. Sanad, Mona S. Mohammed Hazardous wastes produced from different industrial activities mainly contribute to serious environmental problems, notably their negative impact on the human health. Therefore, there is a great need to implement an innovative protocol for the safe disposal of these wastes in the production of widely-used materials. This study...
Tue, 07/21/2020 - 16:00
Selenium (Se) is an essential micronutrient for human health. Deficiency and suboptimality of Se in human populations are a potential health risk. The reduction of such health risk by biofortification of crops, particularly in wheat has drawn much attention, especially for color-grained wheat as it is rich in anthocyanins and can be used as a major source of antioxidants in diet. Herein, a two-...
Mon, 07/20/2020 - 06:12
Author(s): Irfan Ullah Khan, Justice Kipkorir Rono, Xue Song Liu, Sheng Jun Feng, He Li, Xi Chen, Zhi Min Yang Plant metallochaperones are a class of specific metal-binding proteins that mediate metal distribution and homeostasis, but their biological functions and mechanisms underlying metal acquisition, translocation and detoxification are largely unknown. This study functionally characterized...
Mon, 07/20/2020 - 06:11
Author(s): Di Ran, Yonggang Ma, Wei Liu, Tongwang Luo, Jiaming Zheng, Dedong Wang, Ruilong Song, Hongyan Zhao, Hui Zou, Jianhong Gu, Yan Yuan, Jianchun Bian, Zongping Liu Cadmium (Cd) is one of worldwide environmental pollutants that causes bone homeostasis, which depends on the resorption of bones by osteoclasts and formation of bones by the osteoblasts (OB). However, the Cd toxicity on OB and...
Mon, 07/20/2020 - 06:10
Author(s): Jingang Wang, Junchao Zhao, Shuang Feng, Jinzhu Zhang, Shufang Gong, Kun Qiao, Aimin Zhou Cadmium (Cd), which seriously affects plant growth and crop production, is harmful to humans. Previous studies revealed ryegrass (Lolium multiflorum Lam.) exhibits Cd tolerance, and may be useful as a potential hyperaccumulator because of its wide distribution. In this study, the physiological and...
Mon, 07/20/2020 - 04:01
Previous efforts in our lab have led to the development of human immunodeficiency virus type 1 (HIV-1) non-nucleoside reverse transcriptase inhibitor (NNRTI) thiophene[3,2-d]pyrimidine compound 1 (K-5a2) with promising activity against wild-type and mutant HIV-1 strains. In this work, a series of novel diarylpyrimidines derivatives carrying a structurally diverse motif at the right wing of the...
Sun, 07/19/2020 - 06:12
Author(s): Zhi-Quan Liu, Hong-Li Li, Xian-Jie Zeng, Cheng Lu, Jing-Ying Fu, Li-Jun Guo, Kimani Wilson Mwangi, Hui-Li Yan, Zhen-Yan He, Huai-Qing Hao, Hai-Chun Jing With increasing environmental pressure and soil pollution, sustainable energy and food production for a steadily growing world population is a grand challenge. Globally, nearly 12 million hectares of croplands are contaminated by...
Sun, 07/19/2020 - 06:10
Author(s): Hao Zhang, Lingyu Luan, Mengjiao Bi, Lining Zhao, Lin Yuan, Jia Feng, Rutao Liu Glutathione peroxidases (Gpxs) play vital roles in elimination of hydroperoxide and other reactive oxygen species through catalyzing reduced glutathione to protect from oxidative stress caused by heavy metals such as lead. Among the family of Gpxs, Gpx3 is the only extracellular enzyme synthesized in the...
Sun, 07/19/2020 - 04:01
The clinical management of bacterial biofilm infections represents an enormous challenge in today’s healthcare setting. The NIH estimates that 65% of bacterial infections are biofilm-related, and therapeutic outcomes are positively correlated with early intervention. Currently, there is no reliable imaging technique to detect biofilm infections in vivo, and current clinical protocols for accurate...
Sat, 07/18/2020 - 14:05
Festuca rubra L. plants are pseudometallophytes colonizing abandoned Pb/Zn mine areas, successfully employed in phytostabilization. To study the contribution of low-molecular weight organic acids to metal tolerance, F. rubra plants were grown for three months in hydroponics with Cd (1.8, 18 and 36 µmol L−1), Pb (50, 250 and 500 µmol L−1) and Zn (0.3, 3 and 6 mmol L−1), separately, and in ternary...
Sat, 07/18/2020 - 06:12
Author(s): Xuejing Wen, Yu Ding, Zilong Tan, Jingxin Wang, Daoyuan Zhang, Yucheng Wang Cadmium (Cd) is one of the most serious global environmental pollutants, which inhibits plant growth and interferes with their physiological processes. However, there have been few studies on the involvement of long noncoding RNAs (lncRNAs) in Cd tolerance. In the present study, we identified the lncRNAs from...
Sat, 07/18/2020 - 02:02
The results of the Multi-Purpose Geochemical Survey in the Pearl River Delta (PRD) show that the pollution is serious. In this study, the influence of geological genesis, soil-forming process, and human activities on soil quality in PRD is analyzed, and the influence factors, genesis and spatial distributional characteristics of cadmium (Cd) in different soil depths are studied by inverse...
Fri, 07/17/2020 - 16:00
Wheat productivity has been significantly improved worldwide through the incorporation of novel genes from various gene pools, not least from wild relatives of wheat, into the commonly cultivated bread and durum wheat. Here, we present and summarize results obtained from a diverse set of wheat-alien introgression lines with mainly introgressions of rye, but also of Leymus spp. and Thinopyrum...
Fri, 07/17/2020 - 16:00
Toxic heavy metals and metalloids in agricultural ecosystems are crucial factors that limit global crop productivity and food safety. Industrial toxic heavy metals and metalloids such as cadmium, lead, and arsenic have contaminated large areas of arable land in the world and their accumulation in the edible parts of crops is causing serious health risks to humans and animals. Plants have co-...
Fri, 07/17/2020 - 06:10
Author(s): Marziyeh Heidari, Kamal Ghanemi, Yadollah Nikpour In the present study, silver (Ag) atoms were chemically deposited on γ-alumina (Al2O3) nanospheres to be further functionalized with trithiocyanuric acid (TTC). The result was Al2O3@Ag@TTC composites, which were used for the selective extraction and preconcentration of Fe (III) and Pb (II) ions in seawater and river water samples. TTC...

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