نتایج جستجو برای: selenium recovery

تعداد نتایج: 215026  

Journal: :The American journal of clinical nutrition 2005
Yiming Xia Kristina E Hill Daniel W Byrne Jiayuan Xu Raymond F Burk

BACKGROUND Selenium is an essential micronutrient with a recommended dietary allowance for adults of 55 mug/d. It functions as an essential constituent of selenoproteins. Although there is no evidence of selenium deficiency in the United States, people in many other areas of the world are selenium deficient, with the consequence that they are unable to express their selenoproteins fully. OBJE...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2005
Yuki Ogasawara Gerard M Lacourciere Kazuyuki Ishii Thressa C Stadtman

Selenophosphate, an activated form of selenium that can serve as a selenium donor, is generated by the selD gene product, selenophosphate synthetase (SPS). Selenophosphate is required by several bacteria and by mammals for the specific synthesis of Secys-tRNA, the precursor of selenocysteine in selenoenzymes. Although free selenide can be used in vitro for synthesis of selenophosphate, the phys...

Journal: :Ecotoxicology and environmental safety 2002
A Dennis Lemly

This article presents a seven-step procedure for developing environmentally safe total maximum daily loads (TMDLs) for selenium. The need for this information stems from recent actions taken by the U.S. Environmental Protection Agency (EPA) that may require TMDLs for selenium and other contaminants that are impairing water bodies. However, there is no technical guidance from EPA or elsewhere th...

Journal: :British Journal of Hospital Medicine 2021

A range of nutrients has been studied or proposed for use in preventing respiratory tract infections and reducing their severity. This article gives a narrative review the existing literature, biological rationales current state clinical evaluation micronutrient therapies. The importance vitamin A, B vitamins, C, D, eicosapentaenoic acid, E, selenium, zinc combination therapies are discussed, l...

2015
Mary Adjepong Pius Agbenorku Patricia Brown Ibok Oduro

BACKGROUND Burn injury results in emotional stress affecting dietary intake and antioxidant micronutrient intake, which is known to have effects on recovery outcomes. The study aimed to assess dietary intake of antioxidant micronutrients and recovery outcomes of burn patients. METHODS Questionnaires were administered to 40 burn patients at Komfo Anokye Teaching Hospital (Ghana) from January 1...

Journal: :Journal of nutritional science and vitaminology 2003
Okhee Lee Jongwha Moon Yongsam Chung

Low selenium status draws much attention because of the possible involvement in the etiology of cardiovascular disease (CVD). Hyperlipidmia or dyslipidemia, a very important risk factor for CVD, occurs frequently in middle-aged Koreans. While selenium deficiency is supposed to aggravate blood lipid profiles, it has been shown that selenium status diminishes with advanced age. However, little is...

Journal: :The American journal of clinical nutrition 2009
Kate Ashton Lee Hooper Linda J Harvey Rachel Hurst Amélie Casgrain Susan J Fairweather-Tait

BACKGROUND To understand the effect of selenium intake on health, it is important to identify sensitive and population-specific biomarkers of selenium status. OBJECTIVE The objective of this systematic review was to assess the usefulness of biomarkers of selenium status in humans. DESIGN The methods included a structured search strategy on Ovid MEDLINE, EMBASE (Ovid), and Cochrane databases...

2016

Selenium is a naturally occurring substance that is toxic at high concentrations but is also a nutritionally essential element. Hydrogen selenide is the most acutely toxic selenium compound. Acute (short-term) exposure to elemental selenium, hydrogen selenide, and selenium dioxide by inhalation results primarily in respiratory effects, such as irritation of the mucous membranes, pulmonary edema...

Journal: :Bioscience, biotechnology, and biochemistry 2004
Satoru Sugihara Mariko Kondo Yûko Chihara Mami Yuji Hiroyuki Hattori Munehiro Yoshida

Sprouts of several plants (10 families and 28 species) were cultivated in a high selenium environment, and the chemical species of selenium in these selenium-enriched sprouts were identified by using high-performance liquid chromatography-inductively coupled plasma mass spectrometry (HPLC-ICPMS). Cultivation of sprouts of kaiware daikon (type of radish) with 5.0 microg/ml or 10.0 microg/ml of s...

Journal: :Biochemical Society transactions 2012
Clive S Butler Charles M Debieux Elizabeth J Dridge Peter Splatt Matthew Wright

Bacterial anaerobic respiration using selenium oxyanions as the sole electron acceptor primarily result in the precipitation of selenium biominerals observed as either intracellular or extracellular selenium deposits. Although a better understanding of the enzymology of bacterial selenate reduction is emerging, the processes by which the selenium nanospheres are constructed, and in some cases s...

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