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Biological Trace Element Research

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https://www.readbyqxmd.com/read/27928722/selenium-mercury-molar-ratios-in-freshwater-fish-in-the-columbia-river-basin-potential-applications-for-specific-fish-consumption-advisories
#1
Leanne K Cusack, Collin Eagles-Smith, Anna K Harding, Molly Kile, Dave Stone
Fish provide a valuable source of beneficial nutrients and are an excellent source of low fat protein. However, fish are also the primary source of methylmercury exposure in humans. Selenium often co-occurs with mercury and there is some evidence that selenium can protect against mercury toxicity yet States issue fish consumption advisories based solely on the risks that methylmercury pose to human health. Recently, it has been suggested the selenium: mercury molar ratio be considered in risk management. In order for agencies to utilize the ratio to set consumption guidelines, it is important to evaluate the variability in selenium and mercury in different fish species...
December 8, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27928721/clinical-and-metabolic-response-to-selenium-supplementation-in-pregnant-women-at-risk-for-intrauterine-growth-restriction-randomized-double-blind-placebo-controlled-trial
#2
Elaheh Mesdaghinia, Azam Rahavi, Fereshteh Bahmani, Nasrin Sharifi, Zatollah Asemi
Data on the effects of selenium supplementation on clinical signs and metabolic profiles in women at risk for intrauterine growth restriction (IUGR) are scarce. This study was designed to assess the effects of selenium supplementation on clinical signs and metabolic status in pregnant women at risk for IUGR. This randomized double-blind placebo-controlled clinical trial was performed among 60 women at risk for IUGR according to abnormal uterine artery Doppler waveform. Participants were randomly assigned to intake either 100 μg selenium supplements as tablet (n = 30) or placebo (n = 30) for 10 weeks between 17 and 27 weeks of gestation...
December 7, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27909865/apocynin-alleviates-renal-ischemia-reperfusion-injury-through-regulating-the-level-of-zinc-and-metallothionen
#3
Bo Hu, Yuhong Wu, Fei Tong, Jie Liu, Xiaohua Shen, Ruilin Shen, Guangtao Xu
The purpose of this research was to evaluate the protective effects of apocynin on renal ischemia/reperfusion (I/R) injury (RI/RI) in rats. Rats preconditioned with apocynin were subjected to renal I/R. Zinc levels in serum and renal tissues, blood urea nitrogen (BUN), and serum creatinine (Scr) were detected. We further measured the activity of superoxide dismutase (SOD); the content of malondialdehyde (MDA), IL-4, IL-6, IL-10, and TNF-α; and the expression of metallothionein (MT) in the renal tissues. Results indicated that the levels of MDA, IL-4, IL-6, IL-10, TNF-α, and MT in the kidney tissue and serum BUN and Scr levels in RI/RI group were significantly higher than those in sham-operated group, while the levels of serum Zn and kidney Zn and SOD were reduced in RI/RI group...
December 1, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27909864/effects-of-chronic-and-acute-zinc-supplementation-on-myocardial-ischemia-reperfusion-injury-in-rats
#4
Serhan Ozyıldırım, Abdulkerim Kasim Baltaci, Engin Sahna, Rasim Mogulkoc
The present study aims to explore the effects of chronic and acute zinc sulfate supplementation on myocardial ischemia-reperfusion injury in rats. The study registered 50 adult male rats which were divided into five groups in equal numbers as follows: group 1, normal control; group 2, sham; group 3, myocardial ischemia reperfusion (My/IR): the group which was fed on a normal diet and in which myocardial I/R was induced; group 4, myocardial ischemia reperfusion + chronic zinc: (5 mg/kg i.p. zinc sulfate for 15 days); and group 5, myocardial ischemia reperfusion + acute zinc: the group which was administered 15 mg/kg i...
December 1, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27905009/increased-serum-al-levels-in-hemodialysis-patients-kept-enhanced-during-a-2-year-prospective-study
#5
Maria L Reina de la Torre, Herminia Lopez García de la Serrana, Loreto Martí Del Moral, Magdalena Palomares Bayo, Miguel Navarro-Alarcón
The regulation of mineral homeostasis is altered in hemodialysis patients with renal insufficiency, producing increased risk for secondary diseases like cardiovascular ones. We hypothesized that risen serum aluminum (Al) concentration in hemodialysis patients kept enhanced during a 2-year longitudinal study is associated with enhanced cardiovascular risk and influenced by medical treatments. This study reports the prospective monitoring of serum Al levels in six-monthly samplings over 2 years in 116 hemodialysis patients and a control group of 50 healthy adults...
November 30, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27888452/the-influence-of-the-dietary-cu-glycine-complex-on-the-histomorphology-of-cancellous-bone-articular-cartilage-and-growth-plate-as-well-as-bone-mechanical-and-geometric-parameters-is-dose-dependent
#6
Ewa Tomaszewska, Piotr Dobrowolski, Małgorzata Kwiecień, Anna Winiarska-Mieczan, Agnieszka Tomczyk, Siemowit Muszyński
Copper (Cu) is required for all basic biochemical and physiological processes. The objective of this study was to compare the effect of two different chemical forms (sulfates and glycinate chelates also below the recommended dose) of Cu administered to adult rats on the biomechanical and morphometric properties of femur. Male rats at the age of 12 weeks were used in the 12-week experiment. The control diet provided the required Cu level from sulfate (S-Cu), and the other diets were supplemented with Cu-glycine complex...
November 26, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27888451/n-acetyl-l-cysteine-protects-liver-and-kidney-against-chromium-vi-induced-oxidative-stress-in-mice
#7
I İpek Boşgelmez, Gülin Güvendik
Acute hexavalent chromium [Cr(VI)] compound exposure may lead to hepatotoxic and nephrotoxic effects. Cr(VI) reduction may generate reactive intermediates and radicals which might be associated with damage. We investigated effects of N-acetyl-l-cysteine (NAC) pre- or post-treatment on oxidative stress and accumulation of Cr in liver and kidney of Cr(VI)-exposed mice. Intraperitoneal potassium dichromate injection (20 mg Cr/kg) caused a significant elevation of lipid peroxidation in both tissues as compared to control (p < 0...
November 25, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27888450/effects-of-chromium-loaded-chitosan-nanoparticles-on-glucose-transporter-4-relevant-mrna-and-proteins-of-phosphatidylinositol-3-kinase-akt2-kinase-and-amp-activated-protein-kinase-of-skeletal-muscles-in-finishing-pigs
#8
Lujie Liu, Bin Wang, Yudan He, Wenjing Tao, Zixun Liu, Minqi Wang
The study was conducted to evaluate the effects of chromium-loaded chitosan nanoparticles (Cr-CNP) on glucose transporter 4 (GLUT4), relevant messenger RNA (mRNA), and proteins involved in phosphatidylinositol 3-kinase (PI3K), Akt2-kinase, and AMP-activated protein kinase (AMPK) of skeletal muscles in finishing pigs. A total of 120 crossbred barrows (BW 65.00 ± 1.26 kg) were randomly allotted to four dietary treatments, with three pens per treatment and 10 pigs per pen. Pigs were fed the basal diet supplemented with 0, 100, 200, or 400 μg/kg of Cr from Cr-CNP for 35 days...
November 25, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27885556/influence-of-selenium-on-the-production-of-t-2-toxin-by-fusarium-poae
#9
Bolun Cheng, Yan Zhang, Bei Tong, Hong Yin
The objective of this study was to investigate the effects of selenium on the production of T-2 toxin by a Fusarium poae strain cultured in a synthetic medium containing different concentrations of selenium. The T-2 toxin contents in fermentative products were evaluated by a high performance liquid chromatography (HPLC). The results showed that the production of T-2 toxin was correlated with the concentration of selenium added to the medium. In all three treatments, the addition of 1 mg/L selenium to the medium resulted in a lower toxin yield than the control (0 mg/L); the yield of the toxin began to increase when selenium concentration was 10 mg/L, while it decreased again at 20 mg/L...
November 24, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27878513/nanoselenium-supplementation-of-heat-stressed-broilers-effects-on-performance-carcass-characteristics-blood-metabolites-immune-response-antioxidant-status-and-jejunal-morphology
#10
Morteza Safdari-Rostamabad, Seyyed Javad Hosseini-Vashan, Ali Hossein Perai, Hadi Sarir
An experiment was conducted to investigate the effects of dietary nanoselenium supplementation at 0, 0.6 and 1.2 mg/kg of diet on growth performance, serum biochemical parameters, immune response, antioxidant capacity, and jejunal morphology of 29-d-old male broilers subjected to heat stress at 37 ± 1°C for 14 d. Broilers were fed for 42 d on the experimental diets. The results showed that nanoselenium supplementation had no effect on growth performance, but it supplementation at the rate of 1.2 mg/kg diet decreased the serum concentration of cholesterol prior to the heat exposure...
November 22, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27878512/nickel-oxide-nanoparticles-induce-oxidative-dna-damage-and-apoptosis-in-kidney-cell-line-nrk-52e
#11
Mahmoud Abudayyak, Elif Guzel, Gül Özhan
Increasing use of nickel oxide (NiO) nanoparticles in different applications results in high occupational and environmental exposure to them. However, the effect of NiO nanoparticles on human health is still poorly documented. It was aimed to investigate the toxic potentials of NiO nanoparticles on NRK-52E kidney epithelial cells. The following assays were used: the nanoparticle characterization by transmission electron microscopy (TEM) and dynamic light scattering (DLS); the determination of cellular uptake and morphologic changes by TEM and inductively coupled plasma-mass spectrometry (ICP-MS); MTT and neutral red uptake (NRU) assays for cytotoxicity; comet assay for genotoxicity; the determination of malondialdehyde (MDA), 8-hydroxydeoxyguanosine (8-OHdG), protein carbonyl (PC) and glutathione (GSH) levels by enzyme-linked immune sorbent assays (ELISA) for the potential of oxidative damage; and Annexin V-FITC apoptosis detection assay with propidium iodide (PI) for apoptosis...
November 22, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27873289/the-effect-of-ketogenic-diet-on-serum-selenium-levels-in-patients-with-intractable-epilepsy
#12
Nur Arslan, Engin Kose, Orkide Guzel
The aim of the present study was to evaluate serum selenium levels in children receiving olive oil-based ketogenic diet (KD) for intractable seizures for at least 1 year. Out of 320 patients who were initiated on KD, patients who continued receiving KD for at least 12 months were enrolled. Sixteen patients who had selenium deficiency at the time of starting KD were excluded. Finally, a total of 110 patients (mean age 7.3 ± 4.2 years) were included. Serum selenium levels were measured at baseline and at 3, 6, and 12 months after treatment initiation by using atomic absorption spectroscopy...
November 21, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27873288/cardioprotective-effect-of-aloe-vera-biomacromolecules-conjugated-with-selenium-trace-element-on-myocardial-ischemia-reperfusion-injury-in-rats
#13
Yang Yang, Ming Yang, Fen Ai, Congxin Huang
The present study was undertaken to evaluate the cardioprotection potential and underlying molecular mechanism afforded by a selenium (Se) polysaccharide (Se-AVP) from Aloe vera in the ischemia-reperfusion (I/R) model of rats in vivo. Myocardial I/R injury was induced by occluding the left anterior descending coronary artery (LAD) for 30 min followed by 2-h continuous reperfusion. Pretreatment with Se-AVP (100, 200, and 400 mg/kg) attenuated myocardial damage, as evidenced by reduction of the infarct sizes, increase in serum and myocardial endogenous antioxidants (superoxide dismutase (SOD), glutathione peroxidase (GSH), and catalase (CAT)), and decrease in the malondialdehyde (MDA) level in the rats suffering I/R injury...
November 21, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27866358/anemia-and-dental-caries-in-pregnant-women-a-prospective-cohort-study
#14
Elisa Miranda Costa, Juliana A P Azevedo, Rafiza F M Martins, Cláudia M C Alves, Cecília C C Ribeiro, Erika B A F Thomaz
The objective was to evaluate the effect of anemia during pregnancy on the risk of dental caries development in pregnant women. A prospective cohort including a sample of pregnant women in a prenatal care unit of São Luís, Brazil, was done. The incidence of dental caries during pregnancy, according to Nyvad's criteria, was the outcome. The main independent variables were serum iron, ferritin, hemoglobin, erythrocyte, hematocrit, mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), and red cell distribution width (RDW)...
November 19, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27866357/an-optimal-dietary-zinc-level-of-brown-egg-laying-hens-fed-a-corn-soybean-meal-diet
#15
Shizhen Qin, Lin Lu, Xichun Zhang, Xiudong Liao, Liyang Zhang, Yanli Guo, Xugang Luo
An experiment was conducted to estimate the optimal dietary zinc (Zn) level of brown-egg laying hens fed a corn-soybean meal diet from 20 to 40 weeks of age. A total of 120 20-week-old Beijing Red commercial laying hens were randomly allotted by bodyweight to one of five treatments with six replicates of four birds each in a completely randomized design, and fed a Zn-unsupplemented corn-soybean meal basal diet containing 27.95 mg Zn/kg by analysis and the basal diets supplemented with 30, 60, 90, or 120 mg Zn/kg as Zn sulfate (reagent grade ZnSO4·7H2O) for a duration of 20 weeks...
November 19, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27866356/effect-of-feeding-and-withdrawal-of-vanadium-and-vitamin-c-on-egg-quality-and-vanadium-residual-over-time-in-laying-hens
#16
J P Wang, K R He, X M Ding, S P Bai, Q F Zeng, K Y Zhang
This experiment examined the egg quality of hens fed vanadium (V) and vitamin C (VC) during storage, as well as the V and VC withdrawal on egg quality and V residual in egg. A total of 360 laying hens (31 weeks old) were randomly allotted into a 3 × 2 factorial arrangement treatments (6 replicates and 10 chicks per replicate) with three levels of dietary V (0, 5, and 10 mg/kg) and two levels of VC (0 and 100 mg/kg) for 19 weeks (feeding V and VC 12 weeks, recovery 7 weeks). The V residual in eggs at 4, 8, and 12th weeks were increased (linear effect, P ≤ 0...
November 19, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27864666/evaluation-of-serum-trace-element-levels-and-superoxide-dismutase-activity-in-patients-with-inflammatory-bowel-disease-translating-basic-research-into-clinical-application
#17
Erfan Mohammadi, Durdi Qujeq, Hassan Taheri, Karimollah Hajian-Tilaki
The relationship of minerals and trace elements with inflammatory bowel disease (IBD) is complex. Alterations in their metabolism can be induced by the diseases and their complications. To study the role of trace elements in IBD patients' serum zinc and copper and their related enzymes, including superoxide dismutase (SOD), activity were measured in patients with IBD patients as well as in healthy subjects. In addition, the correlation between serum trace element levels, albumin, total protein, urea level, copper/zinc ratio, and disease activity (DA) was determined in these subjects...
November 18, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27854046/fluoride-exposure-aggravates-the-testicular-damage-and-sperm-quality-in-diabetic-mice-protective-role-of-ginseng-and-banaba
#18
Saumya Sm, P Mahaboob Basha
Fluoride toxicity is known to pose infertility in fluoride-intoxicated animals as well as in people residing in fluoride endemic zones. The present study addresses the degree of impairments caused due to co-exposure of high fluoride toxicity in diabetic mice. Swiss mice, Mus musculus, were subjected to fluoride toxicity by providing fluoride-supplemented drinking water (600 ppm NaF) for a period of 30 days after the confirmation of streptozotocin-induced diabetes(STZ, 50 mg/kgbw). Consequently, aggravated hyperglycemia and tissue fluoride accumulation were witnessed in fluoride-intoxicated diabetic mice; later, these toxicated mice were treated with ginseng extract (GE) and banaba leaf extract, (BLE) at dose of 150 mg/kgbw/day alone and in combination for 15 and 30-day duration to check the efficacy of phytoextracts in reversing the toxicity...
November 16, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27837381/metabolomics-and-trace-element-analysis-of-camel-tear-by-gc-ms-and-icp-ms
#19
Syed Rizwan Ahamad, Mohammad Raish, Syed Hilal Yaqoob, Altaf Khan, Faiyaz Shakeel
Camel tear metabolomics and elemental analysis are useful in getting the information regarding the components responsible for maintaining the protective system that allows living in the desert and dry regions. The aim of this study was to correlate that the camel tears can be used as artificial tears for the evaluation of dryness in the eye. Eye biomarkers of camel tears were analyzed by gas chromatography-mass spectroscopy (GC-MS) and inductively coupled plasma mass spectroscopy (ICP-MS). The major compounds detected in camel tears by GC-MS were alanine, valine, leucine, norvaline, glycine, cadaverine, urea, ribitol, sugars, and higher fatty acids like octadecanoic acid and hexadecanoic acid...
November 11, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27830451/tissue-specific-regulation-of-the-contents-and-correlations-of-mineral-elements-in-hens-by-zinc-oxide-nanoparticles
#20
Yong Zhao, Yan-Ni Feng, Lan Li, Hong-Fu Zhang, Yu-Na Zhang, Peng-Fei Zhang, Xin-Qi Liu, Wei-Dong Zhang, Ting-Ting Huang, Li Zhao, Wei Shen, Zhi-Hui Hao
Due to their small size, zinc oxide (ZnO) nanoparticles (NPs) are readily absorbed and easily cross biological barriers, which make them promising candidates as diet additives. However, some studies have reported that ZnO NPs cause toxicity; therefore, their safety and potency as diet additives for farm animals should be established. This study was the first to fully evaluate the effects of ZnO NPs on the homeostasis of eight elements in seven organs/tissues. The regulation of element homeostasis was found to be organ specific with no influence on oxidation status, anti-oxidation capability, or organ damage...
November 10, 2016: Biological Trace Element Research
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