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https://www.readbyqxmd.com/read/28917638/novel-antihelmintic-activity-of-tinidazole-coordination-compounds-relevance-of-the-metal-ion-and-structural-properties
#1
Israel Alfaro-Fuentes, Rodrigo Castro-Ramírez, Naytzé Ortiz-Pastrana, Rosa María Medina-Guerrero, Lilia Catherinne Soler-Jiménez, Irma Martínez-Rodríguez, Miguel Betancourt-Lozano, Leonardo Ibarra-Castro, Norah Barba-Behrens, Emma Josefina Fajer-Ávila
The in vitro and in vivo antihelmintic activity of cobalt(II), copper(II) and zinc(II) coordination compounds of tinidazole (tnz) were investigated in cultivated spotted rose snapper, infested with dactylogyrid monogeneans. The tinidazole coordination compounds [Co(tnz)2Cl2], [Co(tnz)2Br2], [Cu(tnz)2Cl2], [Cu(tnz)2Br2], [Zn(tnz)2Cl2] and [Zn(tnz)2Br2] were synthesized and spectroscopically characterized. Their molecular structures were determined by their single crystal X-ray diffraction. The metal ions presented distorted tetrahedral geometries, with an intramolecular bifurcated lone pair SO⋯π, from the sulfone group with the imidazolic ring, which contributed to the stability of the compounds in solid state and in solution...
August 30, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28917262/determination-of-several-element-levels-in-hardaliye-beverages-using-flame-atomic-absorption-spectrometry-after-ultrasound-probe-extraction
#2
Dilek Bakircioglu, Nukte Topraksever, Yasemin Bakircioglu Kurtulus
In the present study, concentrations of calcium (Ca), copper (Cu), magnesium (Mg), manganese (Mn), sodium (Na), and zinc (Zn) in hardaliye samples produced in Turkey were determined by flame atomic absorption spectrometry after ultrasound probe extraction (UPE), microwave-assisted extraction (MAE), and wet extraction procedures. At present, there is limited work in the literature on UPE for the determination of trace elements in beverage samples. Our single-correlation analysis showed that the elements studied with the UPE method in hardaliye were strongly correlated with the MAE procedure...
September 1, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28916349/offshore-iron-sand-extraction-in-new-zealand-potential-trace-metal-exposure-of-benthic-and-pelagic-biota
#3
Kay Vopel, Chris Pook, Peter Wilson, John Robertson
Plans to exploit an offshore source of iron sand in South Taranaki Bight (STB), New Zealand, caused concerns that such exploitation may expose benthic and pelagic biota to elevated trace metal concentrations. We conducted dilute-acid extractions and standard elutriate tests to investigate the potential of this exploitation to (1) create a new seafloor with elevated trace metal content, (2) mobilise trace metals during iron sand extraction and, (3) enrich the returning process seawater, which feeds iron sand through mills, with trace metals...
September 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28914778/screening-for-autochthonous-phytoextractors-in-a-heavy-metal-contaminated-coal-mining-area
#4
Kuangjia Li, Zijian Lun, Lin Zhao, Qilong Zhu, Yansheng Gu, Manzhou Li
In order to protect public health and crops from soil heavy metal (HM) contamination at a coal mining area in Henan, central China, HM pollution investigation and screening of autochthonous HM phytoextractors were conducted. The concentrations of cadmium (Cd), lead (Pb), copper (Cu) and zinc (Zn) in surface soils exceeded the corresponding local background values and the China National Standard (CNS). The maximum potential ecological risk (RI) was 627.30, indicating very high ecological risk. The monomial risk of Cd contributed the most to the RI, varying from 85...
September 15, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28913858/relationships-between-mineral-concentrations-and-physicochemical-characteristics-in-the-longissimus-thoracis-muscle-of-japanese-black-cattle
#5
Takashi Kitagawa, Masayuki Funaba, Tohru Matsui
The relationship between mineral concentrations, and the relationship of mineral concentrations with physicochemical characteristics in muscles were investigated using the Longissimus thoracis (LT) muscle of 44 Japanese Black steers. We determined moisture content, fat content, meat color, fatty acid composition and mineral concentrations in the LT muscle. Magnesium (Mg), potassium (K) and zinc (Zn) concentrations had negative correlations with fat content, but sodium (Na), manganese (Mn), copper (Cu) and molybdenum (Mo) concentrations were not correlated with fat content...
September 15, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28912764/resistance-to-antibiotics-biocides-preservatives-and-metals-in-bacteria-isolated-from-seafoods-co-selection-of-strains-resistant-or-tolerant-to-different-classes-of-compounds
#6
José L Romero, María J Grande Burgos, Rubén Pérez-Pulido, Antonio Gálvez, Rosario Lucas
Multi-drug resistant bacteria (particularly those producing extended-spectrum β-lactamases) have become a major health concern. The continued exposure to antibiotics, biocides, chemical preservatives, and metals in different settings such as the food chain or in the environment may result in development of multiple resistance or co-resistance. The aim of the present study was to determine multiple resistances (biocides, antibiotics, chemical preservatives, phenolic compounds, and metals) in bacterial isolates from seafoods...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28904290/copper-diethyldithiocarbamate-as-an-inhibitor-of-tissue-plasminogen-activator-synthesis-in-cultured-human-coronary-endothelial-cells
#7
Tomoya Fujie, Shiori Okino, Eiko Yoshida, Chika Yamamoto, Hiroshi Naka, Toshiyuki Kaji
Recent developments have shown that organic-inorganic hybrid molecules have the potential to provide useful tools for analyzing biological systems. In the case of fibrinolysis, which is the phenomenon whereby fibrin is degraded by plasmin that has been converted from plasminogen via tissue plasminogen activator (t-PA) secreted from vascular endothelial cells, we hypothesized that there may be organic-inorganic hybrid molecules that could be used to analyze the mechanisms by which endothelial fibrinolysis is regulated...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28898751/treatment-of-model-solutions-and-wastewater-containing-selected-hazardous-metal-ions-using-a-chitin-lignin-hybrid-material-as-an-effective-sorbent
#8
Przemysław Bartczak, Łukasz Klapiszewski, Marcin Wysokowski, Izabela Majchrzak, Weronika Czernicka, Adam Piasecki, Hermann Ehrlich, Teofil Jesionowski
A chitin/lignin material with defined physicochemical and morphological properties was used as an effective adsorbent of environmentally toxic metals from model systems. Particularly significant is its use in the neutralization of real industrial wastes. The ions Ni(2+), Cu(2+), Zn(2+) and Pb(2+) were adsorbed on the functional sorbent, confirming the high sorption capacity of the newly obtained product, primarily due to the presence on its surface of numerous active functional groups from the component biopolymers...
September 9, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28892882/circulating-protein-carbonyls-antioxidant-enzymes-and-related-trace-minerals-among-preterms-with-respiratory-distress-syndrome
#9
Ahmed El-Abd Ahmed, Eman Ahmed Abd-Elmawgood, Mohammed H Hassan
INTRODUCTION: Information about oxidative stress in preterms with Respiratory Distress Syndrome (RDS) is defective, so various researches in this area are required, which may open new roads in understanding the pathogenesis of the disease, hence provide additional helpful therapeutic approaches. AIM: To assess and compare the plasma level of protein carbonyls as a marker for oxidant status and the antioxidant enzymes; Superoxide Dismutase (SOD) and Glutathione Peroxidase (GPx) and the related trace minerals in the form of Copper (Cu), Zinc (Zn) and Selenium (Se) as markers for antioxidant status, in preterms with and without RDS...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28892700/modification-of-biochar-derived-from-sawdust-and-its-application-in-removal-of-tetracycline-and-copper-from-aqueous-solution-adsorption-mechanism-and-modelling
#10
Yaoyu Zhou, Xiaocheng Liu, Yujia Xiang, Pei Wang, Jiachao Zhang, Fengfeng Zhang, Jianhong Wei, Lin Luo, Ming Lei, Lin Tang
Highly efficient simultaneous removal of Cu(II) and tetracycline (TET) from aqueous solution was accomplished by iron and zinc doped sawdust biochar (Fe/Zn-biochar). The mutual effects and inner mechanisms of their adsorption onto Fe/Zn-biochar were systematically investigated via sole and binary systems, sorption isotherm and adsorption kinetics models. The liquid-film diffusion step might be the rate-limiting step for tetracycline, the interaction of Cu(II) was more likely controlled by both intra particle diffusion model and liquid film diffusion model...
September 1, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28889277/neurodegeneration-induced-by-metals-in-caenorhabditis-elegans
#11
Felix Antunes Soares, Daiandra Almeida Fagundez, Daiana Silva Avila
Metals are a component of a variety of ecosystems and organisms. They can generally be divided into essential and nonessential metals. The essential metals are involved in physiological processes once the deficiency of these metals has been associated with diseases. Although iron, manganese, copper, and zinc are important for life, it has been evidenced that they are also involved in neuronal damage in many neurodegenerative disorders. Nonessential metals, which are metals without physiological functions, are present in trace or higher levels in living organisms...
2017: Advances in Neurobiology
https://www.readbyqxmd.com/read/28889271/neurotoxicity-of-metal-mixtures
#12
V M Andrade, M Aschner, A P Marreilha Dos Santos
Metals are the oldest toxins known to humans. Metals differ from other toxic substances in that they are neither created nor destroyed by humans (Casarett and Doull's, Toxicology: the basic science of poisons, 8th edn. McGraw-Hill, London, 2013). Metals are of great importance in our daily life and their frequent use makes their omnipresence and a constant source of human exposure. Metals such as arsenic [As], lead [Pb], mercury [Hg], aluminum [Al] and cadmium [Cd] do not have any specific role in an organism and can be toxic even at low levels...
2017: Advances in Neurobiology
https://www.readbyqxmd.com/read/28888463/brazil-nuts-nutritional-composition-health-benefits-and-safety-aspects
#13
REVIEW
Bárbara R Cardoso, Graziela B Silva Duarte, Bruna Z Reis, Silvia M F Cozzolino
Brazil nuts are among the richest selenium food sources, and studies have considered this Amazonian nut as an alternative for selenium supplementation. Besides selenium, Brazil nuts present relevant content of other micronutrients such as magnesium, copper, and zinc. The nutritional composition of nuts, also characterized by adequate fatty acid profile and high content of protein and bioactive compounds, has many health benefits. In the present review, we examine the nutritional composition of Brazil nuts, comparing it with other nuts, and describe the relevance of possible contaminants and metal toxicants observed in this nut for human health...
October 2017: Food Research International
https://www.readbyqxmd.com/read/28887563/the-most-active-cu-facet-for-low-temperature-water-gas-shift-reaction
#14
Zhenhua Zhang, Sha-Sha Wang, Rui Song, Tian Cao, Liangfeng Luo, Xuanye Chen, Yuxian Gao, Jiqing Lu, Wei-Xue Li, Weixin Huang
Identification of the active site is important in developing rational design strategies for solid catalysts but is seriously blocked by their structural complexity. Here, we use uniform Cu nanocrystals synthesized by a morphology-preserved reduction of corresponding uniform Cu2O nanocrystals in order to identify the most active Cu facet for low-temperature water gas shift (WGS) reaction. Cu cubes enclosed with {100} facets are very active in catalyzing the WGS reaction up to 548 K while Cu octahedra enclosed with {111} facets are inactive...
September 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28886370/synthesis-of-iron-and-copper-cluster-grafted-zinc-oxide-nanorod-with-enhanced-visible-light-induced-photocatalytic-activity
#15
Umair Alam, Azam Khan, Detlef Bahnemann, M Muneer
Design of visible-light-responsive photocatalyst employing simple and cost-effective method is of great importance from commercial point of view. Herein, we report the synthesis of visible-light-sensitive ubiquitous nanoclusters of Fe(3+)/Cu(2+)-grafted ZnO nanorod using impregnation technique, which showed excellent photocatalytic activity towards the decomposition of Rhodamine B (RhB), 4-nitrophenol (4-NP) and paracetamol in aqueous suspension under atmospheric oxygen. Fe-grafted ZnO nanorod exhibited pronounced effect for the degradation of the above-mentioned pollutants compared to pure ZnO and Cu-grafted ZnO nanorod...
September 1, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28884887/impaired-antioxidant-enzyme-functions-with-increased-lipid-peroxidation-in-epithelial-ovarian-cancer
#16
Aydan Caglayan, Doruk Cevdi Katlan, Zafer Selçuk Tuncer, Kunter Yüce, Hasan Berkan Sayal, Mehmet Coşkun Salman, Belma Kocer-Gumusel
We aimed to identify the possible role of oxidant-antioxidant status in epithelial ovarian cancer (EOC) by measuring (a) antioxidant enzyme (AOE) activities [total superoxide dismutase (SODtotal ), manganese-SOD (Mn-SOD), copper,zinc-SOD (Cu,Zn-SOD), catalase (CAT) and glutathione peroxidase (GPx1)], (b) Mn-SOD protein expression, (c) lipid peroxidation markers [malondialdehyde (MDA), 8-epi-prostaglandin-F2α (8-epi-PGF2α)] and by evaluating the possible correlations between tumor biomarkers, reproductive hormone levels and all measured parameters, comprehensively...
September 8, 2017: IUBMB Life
https://www.readbyqxmd.com/read/28883881/zinc-and-copper-metabolism-and-risk-of-autism-a-reply-to-sayehmiri-et-al
#17
Keith Fluegge Ba
OBJECTIVE: Sayehmiri et al. recently conducted a meta-analysis to explore the relationship between zinc and copper metabolism and autism spectrum disorders (ASD). Recent reports have elucidated a full behavioral profile of mice exposed to prenatal zinc deficiency and documented a phenotype similar to that found in autism spectrum disorders (ASD). These studies suggest that significant alterations in Zn metabolism may be an important nutritional component in the development of ASD. MATERIALS & METHODS: The idea that prenatal zinc deficiency may be to blame is cursorily challenged...
2017: Iranian Journal of Child Neurology
https://www.readbyqxmd.com/read/28879625/effects-of-arsenic-compounds-on-microminerals-content-and-antioxidant-enzyme-activities-in-rat-liver
#18
Ana Cláudia Ferreira Souza, Sarah Cozzer Marchesi, Graziela Domingues de Almeida Lima, Mariana Machado-Neves
Interactions of arsenic with essential trace elements may result in disturbances on body homeostasis. In the present study, we aimed to investigate the effects of different arsenic compounds on micromineral content and antioxidant enzyme activities in rat liver. Male Wistar rats were randomly divided into five groups and exposed to sodium arsenite and sodium arsenate at 0.01 and 10 mg/L for 8 weeks in drinking water. The concentration of arsenic increased in the liver of all arsenic-exposed animals. The proportion of zinc and copper increased in animals exposed to 0...
September 6, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28879543/apex-predatory-mammals-as-bioindicator-species-in-environmental-monitoring-of-elements-in-dinaric-alps-croatia
#19
Maja Lazarus, Ankica Sekovanić, Tatjana Orct, Slaven Reljić, Josip Kusak, Jasna Jurasović, Đuro Huber
Tissue element investigations of apex terrestrial mammals are very scarce in Europe. We quantified 16 essential and nonessential elements in the kidney cortex, liver, and muscle tissue of 467 brown bears (Ursus arctos), 125 gray wolves (Canis lupus), one Eurasian lynx (Lynx lynx), and three golden jackals (Canis aureus) from Croatia by inductively coupled plasma mass spectrometry (ICP-MS). Renal cadmium (0.6% of animals) and lead (1%) and hepatic lead (5%) were found in toxicologically relevant levels for mammals only in bears, while the other elements were within normal range...
September 6, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28877212/selenium-deficiency-induced-alterations-in-ion-profiles-in-chicken-muscle
#20
Haidong Yao, Xia Zhao, Ruifeng Fan, Hamid Sattar, Jinxin Zhao, Wenchao Zhao, Ziwei Zhang, Yufeng Li, Shiwen Xu
Ion homeostasis plays important roles in development of metabolic diseases. In the present study, we examined the contents and distributions of 25 ions in chicken muscles following treatment with selenium (Se) deficiency for 25 days. The results revealed that in chicken muscles, the top ranked microelements were silicon (Si), iron (Fe), zinc (Zn), aluminum (Al), copper (Cu) and boron (B), showing low contents that varied from 292.89 ppb to 100.27 ppm. After Se deficiency treatment, essential microelements [Cu, chromium (Cr), vanadium (V) and manganese (Mn)], and toxic microelements [cadmium (Cd) and mercury (Hg)] became more concentrated (P < 0...
2017: PloS One
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