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selenium concentration

selenium concentration

Selenium concentration, dietary intake and risk of ...

This study showed that selenium concentration in toenail, whole blood and serum was inversely associated with HCC risk. Conclusion: increased concentration in serum selenium was related to a lower risk of HCC. However, these results based on dietary intake and tissue samples, which included few studies, did not reach statistical significance.

Serum selenium concentrations and risk of all-cause and ...

Background: The impact of selenium status on the long-term health of people with type 2 diabetes (T2D) remains unclear. Objectives: To prospectively examine the association of serum selenium concentrations with all-cause and heart disease mortality among individuals with T2D. Methods: This analysis included 3199 adults with T2D from the third NHANES (NHANES III) and NHANES (2003-2004, 2011-2014).

Selenium concentration in wheat grain: Is there sufficient ...

Selenium (Se) is an essential micronutrient for humans and animals, with antioxidant, anti-cancer and anti-viral effects, and wheat is an important dietary source of this element. In this study, surveys of Se concentration in grain of ancestral and wild relatives of wheat, wheat landrace accessions, populations, and commercial cultivars grown in Mexico and Australia were conducted. Cultivars ...

Lower serum selenium concentration associated with

2021-10-20 · Serum selenium concentration was determined by atomic absorption spectrophotometry (BH model 5.100, Beijing Bohu Innovative Electronic Technology Corporation), with duplicate readings taken with an integration time of 2 (Liu, Ai, et al., 2011). One high outlier (selenium >10 standard deviations from the mean) was excluded from the current analyses.

Selenium metabolism in plants - ScienceDirect

2018-11-1 · Selenium (Se) and sulfur (S) share the same primary metabolism in plants. • Most angiosperm (flowering plant) species have similar shoot Se/S quotients. • Secondary Se metabolism determines tissue Se concentration differences among species. • Se hyperaccumulation results from effective metabolic detoxification of Se in tissues. •

Selenium Python 教程 - 知乎

Selenium是一个用电脑模拟人操作浏览器网页,可以实现自动化,测试等!废话不多说,直接干! 准备工作安装seleniumm pip install selenium2. 下载浏览器驱动 Firefox浏览器驱动: geckodriverChrome浏览器驱动: c

爬虫(二)浏览器如何识别selenium及爬虫如何绕过反爬 - 知乎

2020-3-11 · 因为selenium只是一个控制浏览器的工具,而chromedriver和geckodriver都不是selenium官方发布的(鬼知道谁发布的),因此在控制浏览器方面会有不同的差异,具体原理不再赘述,总之很多网站不能用selenium+chrome就可以试试firefox。

The association between serum selenium concentration

2021-7-15 · The association between serum selenium concentration and prognosis in patients with heart failure in a Chinese population. Zhiliang Zhang 1,2, Chao Chang 1,

Selenium | The Nutrition Source | Harvard T.H. Chan School ...

Selenium is a trace mineral, which means that the body only needs a small amount of it. It is found naturally in foods or as a supplement. Selenium is an essential component of various enzymes and proteins, called selenoproteins, that help to make DNA and

Influence of various selenium sources on selenium ...

2014-3-5 · Selenium (Se) as essential trace element is supplemented in various compounds to rations of food producing animals. In human nutrition the range between Se requirement and upper level is very small (1:3–5). Hence, food of animal origin may contribute to Se supply of humans, but can also offer high amounts of Se and exceed the Se upper level for humans. Therefore the transfer into the milk of ...

SES - Clinical: Selenium, Serum

Selenium supplementation to raise the serum concentration to above 70 ng/mL is the usual treatment. Serum monitoring done on a semiannual basis checks the adequacy of supplementation. Selenium toxicity has been observed in animals when daily intake exceeds 4 ppm.

Serum Concentration of Selenium and GPX Enzyme

2020-7-12 · Selenium levels might have a significant role in asthma pathogenesis. Low selenium levels of the New Zealand population reflected a low consumption of selenium . 2. Objectives The present study aimed to investigate the serum concentration of selenium and serum GPX activity of patients with asthma disease and controls. 3. Methods 3.1. Studied ...

Dietary selenium sources differentially regulate selenium ...

Selenium concentration. In the spleen and dorsal muscle, Se concentration was the lowest for fish fed the S-S diet and showed no significant difference between fish fed the S-Y and S-M diets. In the kidney, Se concentration was the highest for fish fed S-S diets and lowest for fish fed the S-M diet .

Selenium in Drinking-water - World Health Organization

Selenium is released into the air as hydrogen selenide, produced metabolically by plants, and as elemental selenium, selenites and selenates in particulate form. The level of selenium in most urban air ranges from 0.1 to 10 ng/m3, but higher levels may be found in certain areas, such as in the vicinity of copper smelters (Zoller & Reamer, 1976).

The role of selenium metabolism and selenoproteins in ...

2020-8-13 · In the human knee joint, the selenium concentration in cartilage is approximately 80 μg/kg dry weight, whereas the selenium concentrations in ligament and meniscus are 270 and 307 μg/kg dry ...

Selenium metabolism in plants - ScienceDirect

2018-11-1 · Selenium (Se) and sulfur (S) share the same primary metabolism in plants. • Most angiosperm (flowering plant) species have similar shoot Se/S quotients. • Secondary Se metabolism determines tissue Se concentration differences among species. • Se hyperaccumulation results from effective metabolic detoxification of Se in tissues. •

CONCENTRATION OF SELENIUM IN SOIL, PASTURE,

2010-6-15 · Dietary selenium requirements of sheep are generally quoted to be between 0.1 and 0.3 mg/g dry matter (Puls, 1994). However, under grazing conditions no 266 Acta Veterinaria (Beograd), Vol. 60, No. 2-3, 263-271, 2010. Antunovi} Z et al.: Concentration of

Association of maternal prenatal selenium concentration ...

Background Selenium (Se), an essential trace mineral, has been implicated in preterm birth (PTB). We aimed to determine the association of maternal Se concentrations during pregnancy with PTB risk and gestational duration in a large number of samples collected from diverse populations. Methods Gestational duration data and maternal plasma or serum samples of 9946 singleton live births were ...

Dietary selenium sources differentially regulate selenium ...

Selenium concentration. In the spleen and dorsal muscle, Se concentration was the lowest for fish fed the S-S diet and showed no significant difference between fish fed the S-Y and S-M diets. In the kidney, Se concentration was the highest for fish fed S-S diets and lowest for fish fed the S-M diet .

SELENIUM IN SOIL - doiSerbia

2010-11-12 · Selenium concentration in soil is determined by selenium content in soil native substrate, climate, relief and age (Mayland etal., 1989). These fac-tors may contribute either to selenium accumulation during soil forming or its removal during or after soil forming. The soils formed on sedimentary rocks

Selenium in the Environment, Metabolism and

2013-3-13 · Selenium is a metalloid which is close to sulfur (S) in terms of properties.The Se concentration in soil varies with type, texture and organic matter content of the soil and with rainfall. Its assimilation by plants is influenced by the physico-chemical properties of the soil (redox status, pH and microbial activity).

Effects of graded concentrations of supplemental selenium ...

2021-11-19 · The experiment was conducted to determine the effects of graded dietary selenium (Se) on organ weight and Se concentrations in tissues and to develop equations for estimating dietary Se intake in pigs. Sixteen barrows (initial body weight = 30.0 ±

(PDF) Selenium Supplementation of Lactating Dairy Cows ...

Selenium Supplementation of Lactating Dairy Cows: Effect on Selenium Concentration in Blood, Milk, Urine, and Feces October 2006 Journal of Dairy Science 89(9):3544-51

Frontiers | Selenium in the Treatment of Graves ...

2021-1-26 · The measurement of total serum selenium concentration or circulating selenoproteins, including GPX-3 and selenoprotein P, can be used to evaluate the selenium status, which is variable depending on the geographical area, being high in

Selenium metabolism in plants - ScienceDirect

2018-11-1 · Selenium (Se) and sulfur (S) share the same primary metabolism in plants. • Most angiosperm (flowering plant) species have similar shoot Se/S quotients. • Secondary Se metabolism determines tissue Se concentration differences among species. • Se hyperaccumulation results from effective metabolic detoxification of Se in tissues. •