keyword
MENU ▼
Read by QxMD icon Read
search

selenium

keyword
https://www.readbyqxmd.com/read/28339083/health-risk-assessment-of-environmental-selenium-emerging-evidence-and-challenges-review
#1
Marco Vinceti, Tommaso Filippini, Silvia Cilloni, Annalisa Bargellini, Anna Valeria Vergoni, Aristides Tsatsakis, Margherita Ferrante
New data have been accumulated in the scientific literature in recent years which allow a more adequate risk assessment of selenium with reference to human health. This new evidence comes from environmental studies, carried out in populations characterized by abnormally high or low selenium intakes, and from high-quality and large randomized controlled trials with selenium recently carried out in the US and in other countries. These trials have consistently shown no beneficial effect on cancer and cardiovascular risk, and have yielded indications of unexpected toxic effects of selenium exposure...
March 24, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28339058/toenail-selenium-as-an-indicator-of-environmental-exposure-a-cross-sectional-study
#2
Tommaso Filippini, Angela Ferrari, Bernhard Michalke, Peter Grill, Luciano Vescovi, Chiara Salvia, Carlotta Malagoli, Marcella Malavolti, Sabina Sieri, Vittorio Krogh, Annalisa Bargellini, Antonio Martino, Margherita Ferrante, Marco Vinceti
The relation between toxicity and essentiality of selenium (Se) is of growing interest in human health, as the effects may widely differ depending of its different chemical species and the exposure levels. Toenail Se has been proposed as a reliable biomarker of long-term Se exposure, but few studies investigated the correlation between its toenail content and environmental determinants (i.e., dietary food intake). We aimed to determine the relation of toenail Se levels with serum Se species as well as food items...
March 24, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28338629/study-of-the-accumulation-of-toxic-and-essential-ultra-trace-elements-in-fruits-of-sorbus-domestica-l
#3
Michaela Zeiner, Iva Juranović Cindrić, Boris Majić, Gerhard Stingeder
In the present work, the accumulation of selected toxic and essential ultra-trace elements in fruits of service tree (Sorbus domestica L.) were determined depending on harvest time. Samples were collected from the same sampling area in two different years and within one year in September and October (maturity state). Harvesting the fruits in the same area excludes the influence of metals taken up via roots, thus the impact of airborne contamination by heavy metal translocation can be studied. All samples were dried and digested using an acidic microwave assisted digestion system prior to quantification by inductively coupled plasma-sector field mass spectrometry (ICP-SFMS)...
March 24, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28335545/reference-values-of-14-serum-trace-elements-for-pregnant-chinese-women-a-cross-sectional-study-in-the-china-nutrition-and-health-survey-2010-2012
#4
Xiaobing Liu, Yu Zhang, Jianhua Piao, Deqian Mao, Yajie Li, Weidong Li, Lichen Yang, Xiaoguang Yang
The development of reference values of trace elements is recognized as a fundamental prerequisite for the assessment of trace element nutritional status and health risks. In this study, a total of 1400 pregnant women aged 27.0 ± 4.5 years were randomly selected from the China Nutrition and Health Survey 2010-2012 (CNHS 2010-2012). The concentrations of 14 serum trace elements were determined by high-resolution inductively coupled plasma mass spectrometry. Reference values were calculated covering the central 95% reference intervals (P2...
March 21, 2017: Nutrients
https://www.readbyqxmd.com/read/28334709/micronutrients-essential-fatty-acids-and-bone-health-in-phenylketonuria
#5
Serwet Demirdas, Francjan J van Spronsen, Carla E M Hollak, J Hanneke van der Lee, Peter H Bisschop, Fred M Vaz, Nienke M Ter Horst, M Estela Rubio-Gozalbo, Annet M Bosch
INTRODUCTION: In phenylketonuria (PKU), a natural protein-restricted dietary treatment prevents severe cognitive impairment. Nutrient deficiencies may occur due to strict diet. This study is aimed at evaluating the dietary intake and blood concentrations of micronutrients and essential fatty acids (FA), bone mineral density (BMD) and fracture history in patients on long-term dietary treatment. METHODS: Sixty early diagnosed Dutch patients (aged 1-39 years) were included in a multi-center cross-sectional study...
March 24, 2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28333766/dietary-inadequacies-in-hiv-infected-and-uninfected-school-aged-children-in-johannesburg-south-africa
#6
Stephanie Shiau, Acadia Webber, Renate Strehlau, Faeezah Patel, Ashraf Coovadia, Samantha Kozakowski, Susan Brodlie, Michael T Yin, Louise Kuhn, Stephen M Arpadi
OBJECTIVES: The World Health Organization (WHO) recommends that HIV-infected children increase energy intake and maintain a balanced macronutrient distribution for optimal growth and nutrition. Few studies have evaluated dietary intake of HIV-infected children in resource-limited settings. METHODS: We conducted a cross-sectional analysis of the dietary intake of 220 perinatally HIV-infected children and 220 HIV-uninfected controls ages 5-9 years in Johannesburg, South Africa...
March 22, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28333357/dietary-patterns-foods-and-nutrients-in-male-fertility-parameters-and-fecundability-a-systematic-review-of-observational-studies
#7
Albert Salas-Huetos, Mònica Bulló, Jordi Salas-Salvadó
BACKGROUND: Infertility is a global public health issue, affecting 15% of all couples of reproductive age. Male factors, including decreased semen quality, are responsible for ~25% of these cases. The dietary pattern, the components of the diet and nutrients have been studied as possible determinants of sperm function and/or fertility. OBJECTIVE AND RATIONALE: Previous systematic reviews have been made of the few heterogeneous low-quality randomized clinical trials (RCTs) conducted in small samples of participants and investigating the effect of specific nutrients and nutritional supplements on male infertility...
March 10, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28331867/the-content-of-plasma-selenium-in-early-admitted-septic-patients
#8
Omid Moradi Moghaddam, Mohammad Niakan Lahiji, Azadeh Moghaddas, Maryam Farasatinasab, Somayyeh Nasiripour
OBJECTIVE: Selenium depletion has been reported in critical illness correlates with an increase in mortality and morbidity. In this study, we aimed to access the selenium plasma levels of septic patients early at the Intensive Care Unit (ICU) admission in order to compare with reference range. METHODS: We conducted a cross-sectional study in a university affiliated hospital aiming to assess the early plasma level of selenium in ICU admitted patients. eighty patients diagnoses with sepsis were included and considered for characteristic evaluation, monitoring criteria assessment and also blood sampling...
January 2017: Journal of Research in Pharmacy Practice
https://www.readbyqxmd.com/read/28330850/neither-vitamin-e-nor-selenium-prevents-dementia-researchers-find
#9
Jacqui Wise
No abstract text is available yet for this article.
March 21, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28330346/a-new-approach-to-molecular-dynamics-with-non-adiabatic-and-spin-orbit-effects-with-applications-to-qm-mm-simulations-of-thiophene-and-selenophene
#10
Marek Pederzoli, Jiří Pittner
We present surface hopping dynamics on potential energy surfaces resulting from the spin-orbit splitting, i.e., surfaces corresponding to the eigenstates of the total electronic Hamiltonian including the spin-orbit coupling. In this approach, difficulties arise because of random phases of degenerate eigenvectors and possibility of crossings of the resulting mixed states. Our implementation solves these problems and allows propagation of the coefficients both in the representation of the spin free Hamiltonian and directly in the "diagonal representation" of the mixed states...
March 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28330186/a-comprehensive-study-of-one-step-selenization-process-for-cu-in1-x-ga-x-se2-thin-film-solar-cells
#11
Shih-Chen Chen, Sheng-Wen Wang, Shou-Yi Kuo, Jenh-Yih Juang, Po-Tsung Lee, Chih Wei Luo, Kaung-Hsiung Wu, Hao-Chung Kuo
In this work, aiming at developing a rapid and environmental-friendly process for fabricating CuIn1-x Ga x Se2 (CIGS) solar cells, we demonstrated the one-step selenization process by using selenium vapor as the atmospheric gas instead of the commonly used H2Se gas. The photoluminescence (PL) characteristics indicate that there exists an optimal location with superior crystalline quality in the CIGS thin films obtained by one-step selenization. The energy dispersive spectroscopy (EDS) reveals that the Ga lateral distribution in the one-step selenized CIGS thin film is intimately correlated to the blue-shifted PL spectra...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28329567/acquired-acrodermatitis-enteropathica-after-gastric-bypass-surgery-responsive-to-iv-supplementation
#12
Jasmine Rana, Molly Plovanich, Elizabeth B Wallace, Chao Yang, Alvaro Laga Canales, Arash Mostaghimi
Nutritional deficiency is rare in developed countries, but can be acquired from decreased nutrient intake, reduced absorption, and increased gastrointestinal excretion. We report a patient with acquired acrodermatitis enteropathica (AE) who exhibited low plasma zinc levels and concurrent nutritional deficiencies (pyridoxine, selenium and fatty acids). Our patient had undergone Roux-en-Y gastric bypass 13 years prior to presentation. The rash, consistent with AE clinically and histologically, nearly resolved one week after starting IV zinc supplementation, total parenteral nutrition, and micronutrient supplements...
November 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28327813/relative-validity-of-a-food-frequency-questionnaire-in-patients-coinfected-with-hepatitis-c-virus-and-human-immunodeficiency-virus
#13
Anelise Fernanda Zanolla, Caroline Buss, Dimas Alexandre Kliemann, Giselle Souza Pinto, Vivian Silveira Vasques, Cristiane Valle Tovo
INTRODUCTION: Validation of food frequency questionnaires (FFQs) is recommended for accurate measurement of habitual food consumption. We assessed the relative validity of a FFQ in patients coinfected with hepatitis C virus and human immunodeficiency virus. METHODS: Each patient responded to a FFQ and three 24-hour food recalls. Pearson's correlation and weighted Kappa index analyses were performed to identify the FFQ relative validity and concordance. RESULTS: De-attenuated correlation coefficients ranged from 0...
January 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28327526/survivin-and-naip-in-human-benign-prostatic-hyperplasia-protective-role-of-the-association-of-serenoa-repens-lycopene-and-selenium-from-the-randomized-clinical-study
#14
Giuseppe Morgia, Antonio Micali, Mariagrazia Rinaldi, Natasha Irrera, Herbert Marini, Domenico Puzzolo, Antonina Pisani, Salvatore Privitera, Giorgio I Russo, Sebastiano Cimino, Antonio Ieni, Vincenzo Trichilo, Domenica Altavilla, Francesco Squadrito, Letteria Minutoli
Benign prostatic hyperplasia (BPH) treatment includes the apoptosis machinery modulation through the direct inhibition of caspase cascade. We previously demonstrated that Serenoa repens (Ser) with lycopene (Ly) and selenium (Se) reawakened apoptosis by reducing survivin and neuronal apoptosis inhibitory protein (NAIP) levels in rats. The aim of this study was to evaluate the effectiveness of Ser-Se-Ly association on survivin and NAIP expression in BPH patients. Ninety patients with lower urinary tract symptoms (LUTS) due to clinical BPH were included in this randomized, double-blind, placebo-controlled trial...
March 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28326773/germanium-compounds-containing-ge%C3%A2-e-double-bonds-e-s-se-te-as-single-source-precursors-for-germanium-chalcogenide-materials
#15
Hyo-Suk Kim, Eun Ae Jung, Seong Ho Han, Jeong Hwan Han, Bo Keun Park, Chang Gyoun Kim, Taek-Mo Chung
New germanium chalcogenide precursors, S═Ge(dmamp)2 (3), S═Ge(dmampS)2 (4), Se═Ge(dmamp)2 (5), Se═Ge(dmampS)2 (6), Te═Ge(dmamp)2 (7), and Te═Ge(dmampS)2 (8), were synthesized from Ge(dmamp)2 (1) and Ge(dmampS)2 (2) using sulfur, selenium, and tellurium powders (dmamp = 1-dimethylamino-2-methyl-2-propanolate, dmampS = 1-dimethylamino-2-methylpropane-2-thiolate). Complexes 1 and 2 were synthesized from metathesis reactions of GeCl2·dioxane with 2 equiv of aminoalkoxide or aminothiolate ligands. Thermogravimetric analysis of complex 1 displayed good thermal stability and volatility...
March 22, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28326763/gold-nanoparticle-based-colorimetric-assay-for-selenium-detection-via-hydride-generation
#16
Guoming Cao, Fujian Xu, Shan-Ling Wang, Kailai Xu, Xiandeng Hou, Peng Wu
Gold nanoparticles (AuNPs)-based colorimetric assays are of particular interest since molecular events can be easily read out with the color changes of AuNPs by naked eye. However, the molecular recognitions occur almost exclusively in the liquid phase, i.e., the interaction between target analytes and AuNPs is always proceeded in the presence of sample matrix. Since the aggregation of the unmodified AuNPs is prone to be influenced by the ionic strength of the solution, sample matrix will cause undesirable interference...
March 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28326620/effect-of-selenium-and-vitamin-e-addition-to-the-extender-on-liquid-stored-capercaillie-tetrao-urogallus-semen-quality
#17
A M Kowalczyk, J Klećkowska-Nawrot, E T Łukaszewicz
Captive breeding has become an important tool in species conservations programmes, maintaining genetic diversity and restoring wild, endangered populations. In order to improve the reproductive efficiency of captive kept capercaillie, the purpose of the study was to determine the effect of selenium and vitamin E addition to semen extender on sperm characteristic during short-term storage. Ejaculates collected individually from four capercaillie were divided into two parts, diluted threefold with basic EK extender and EK enriched with 1 mg/ml of organic selenium and 8 mg/ml of vitamin E (EK+Se+E) and stored 24 hr at temp...
March 21, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28326463/relationship-between-selenium-lead-and-mercury-in-red-blood-cells-of-saudi-autistic-children
#18
Afaf El-Ansary, Geir Bjørklund, Alexey A Tinkov, Anatoly V Skalny, Hussain Al Dera
Autism spectrum disorder (ASD) is a neurodevelopmental disorder that can cause significant social, communication and behavioral challenges. Environmental contribution to ASD is due in large part to the sensitivity of the developing brain to external exposures such as lead (Pb), and mercury (Hg) as toxic heavy metals or due to a poor detoxification ability as the phenotype of this disorder. Selenium (Se) as an antioxidant element that counteracts the neurotoxicity of Hg, and Pb, presumably through the formation of nontoxic complexes...
March 21, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28325649/elemental-analysis-of-serum-and-hair-from-pre-eclamptic-south-african-women
#19
K Maduray, J Moodley, C Soobramoney, R Moodley, T Naicker
Pre-eclampsia is a hypertensive disorder that is associated with adverse maternal and perinatal outcomes. It has been proposed that specific trace and macro elements associated with antioxidant activities may also play a contributory role in aetiology of pre-eclampsia. The aim of this study was to measure the concentrations of thirteen different elements in hair and serum samples from women with a diagnosis of pre-eclampsia and compare them with normotensive controls. Venous blood and pubic hair samples were collected from forty-three pre-eclamptic and twenty-three normotensive pregnant women...
March 9, 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28324842/phenotypical-physiological-and-biochemical-analyses-provide-insight-into-selenium-induced-phytotoxicity-in-rice-plants
#20
Mohammad Golam Mostofa, Mohammad Anwar Hossain, Md Nurealam Siddiqui, Masayuki Fujita, Lam-Son Phan Tran
The present study investigated the phenotypical, physiological and biochemical changes of rice plants exposed to high selenium (Se) concentrations to gain an insight into Se-induced phytotoxicity. Results showed that exposure of rice plants to excessive Se resulted in growth retardation and biomass reduction in connection with the decreased levels of chlorophyll, carotenoids and soluble proteins. The reduced water status and an associated increase in sugar and proline levels indicated Se-induced osmotic stress in rice plants...
March 11, 2017: Chemosphere
keyword
keyword
5053
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"