selenium concentration levels

A low selenium intake leads to a selenium concentration below the levels for optimum expression of both GPx and SelP. The expression of these selenoproteins is reported to be dependent on the dietary intake of selenium. Several studies report that selenium supplementation (supra-nutritional levels) is effective in enhancing selenium ...

According to some authors, serum selenium levels are strongly associated with the severity of liver diseases, including liver cirrhosis. The aim of this study was to determine the relationship between the concentration of selenium and pro-inflammatory and profibrotic cytokines—interleukin-6 (IL-6) and growth differentiation factor 15 (GDF …

Selenium concentration values for human urine samples are presented, and the literature on the chemical species of the element in urine is critically reviewed. Daily excretion levels in healthy persons and in pathological or experimental conditions are compiled. Medical implications and the signific …

However, Gać et al. measured plasma selenium concentrations, oxidative stress levels, and total anti-oxidant status in 337 children (mean age: 8.53 ± 1.92 years) and found that the plasma selenium concentration was not negatively correlated with oxidative stress levels, but was positively correlated with the total urine anti-oxidant status.

Gassio et al. reported a consistent observation of low-serum selenium level in patients with phenylketonuria and found that selenium concentration was associated with worsen Conners' Continuous Performance Test measures (more omission errors, fluctuating attention and inconsistency of response times, and slowing reaction time as …

A total of 905 human milk samples collected in all provinces of Poland, between 12 and 75 days of lactation, were analyzed for selenium concentration. The distribution of Se levels in milk between the provinces was narrow and varied from 8.81 to 11.58 ng/mL, with the mean value (+/- SD) of 10.24 +/- 2.82 ng/mL.

Analysis of plasma/serum Se concentration in a number of D-FINES study participants showed that full plasma GPx expression (serum or plasma Se level of 98.7 μg/L) was not achieved in the majority of all population groups included in the study, and postmenopausal women had higher Se status across all ethnicities .

The mean level of selenium was 136.78 ± 20.32 μg/L. Participants with higher selenium levels were more prone to be male, diabetics, having hypoglycemic agents, elevated TC, and reduced CRP. During the mean follow-up time of 121.05 ± 40.85 months, 307 (33.05%) deaths were recorded including 56 (6.03%) cardiovascular deaths …

The Association of Circulating Selenium Concentrations with Diabetes Mellitus: Liao et al., 2020. China : Cross-sectional study: Blood Se concentrations (136.4 ± 19.60) μg/L: To analyze the association of circulating selenium level with DM, and further explore their relationship through and age subgroups.

According to some authors, serum selenium levels are strongly associated with the severity of liver diseases, including liver cirrhosis. The aim of this study was to determine the relationship between the concentration of selenium and pro-inflammatory and profibrotic cytokines-interleukin-6 (IL-6) and growth differentiation factor 15 (GDF-15) …

1. Introduction. Selenium (Se) is an essential micronutrient for living organisms and plays a vital role in several major metabolic pathways, such as thyroid hormone metabolism, antioxidant defense systems, and immune functions (Brown and Arthur, 2001; Zimmerman et al., 2015).Se concentration in the Earth's crust is …

Selenium is an essential element that is required for selenocysteine synthesis and production of selenoproteins . Animal source foods such as dairy products, meat and seafoods have high selenium concentration, and for plant-foods, the concentration of selenium depend on the selenium level in soil.

Indications. Selenium is a trace mineral that exists in minimal concentrations in the body but can play an essential role in human health. Food sources high in selenium include Brazil nuts, seeds, mushrooms, fish, seafood, beef, and poultry. Selenium presents in an organic form as selenomethionine in plant food and an inorganic form as selenate …

Pathological conditions Selenium concentration levels have also been determined in some well-defined diseases or pathological conditions as summarised in Table III. Selenium excretion values for urine from a reference population are included. In this type of study, there always remains the problem of whether a changed excretion rate …

Selenium is an important trace element that is needed for the proper functioning of our cells. It is needed in very small amounts, but it might be a good idea to have a blood test done to check the serum selenium level. The Mayo Clinic Laboratories state that the normal concentration in adult human blood serum is 70 to 150 …

• Younger children (aged 3–5 years) have lower serum selenium concentrations than do older children (aged 6–11 years). • At least 90 percent of 3–11 year-old children have adequate serum concentrations of selenium. Highlights . The majority of U.S. children (> 90 percent) have adequate serum concentrations of selenium (≥ 70 ng/mL).

However, selenium concentration in soil has a smaller effect on selenium levels in animal products than in plant-based foods because animals maintain predictable tissue concentrations of selenium through homeostatic mechanisms. Furthermore, formulated livestock feeds generally contain the same levels of selenium.

Mercury and selenium concentrations and Se:Hg molar ratio in edible muscle and hepatopancreas of the crab Callinectes arcuatus from coastal lagoons of northwest Mexico were determined using atomic absorption spectrophotometry. ... Hg ratio depends mainly on Hg levels because selenium is an essential element, which is …

As a consequence, the average serum selenium concentration in most American adults was above 95 ng/mL ( 11 ), while Europeans ranged from 50 to 90 …

Selenium concentration was determined with 2,3–DAN under conditions of controlled pH (pH 1–2) via the formation of selenodiazole complex. ... with a mean selenium level of 0.18 mg/mL. In addition, lower levels of Se are observed in animals in Europe, which is likely due to the lower level of selenium in the soil in Europe compared …

Most selenium in the body is stored in muscle tissue, although the thyroid gland holds the highest concentration of selenium due to various selenoproteins that assist with thyroid function. Recommended Amounts. …

Dietary deficiency of selenium is a global health threat related to low selenium concentrations in crops. Despite the chemical similarity of selenium to the two more abundantly studied elements ...

Background Evidence suggests that alterations in serum trace element concentrations are closely associated with mental illness. However, studies on the relationship between serum copper, zinc, and selenium concentrations and depressive symptoms are limited and with controversial results. We aimed to investigate the …

Whole blood selenium analysis is preferred over plasma and serum. 127 Whole blood selenium concentrations ranging from 0.07 to more than 0.1 ppm are considered normal. Short-term oral or intramuscular supplementation of selenium can confuse interpretation of circulating selenium concentration.

The reference range for plasma selenium is about 60–150 ng/mL. Selenium deficiency (serum concentration <40 ng/mL) is rare and is associated with loss of glutathione peroxidase activity. Dietary selenium deficiency is generally seen in hospitalized patients or with the use of TPN.

Incorporation of Se into Cd 1 − x Zn x Te (CZT) to form the quaternary compound semiconductor Cd 1 − x Zn x Te 1–y Se y (CZTS) has proven to be an effective solution for compensating the major flaws associated with CZT, including poor homogeneity and high concentrations of electronically active deep levels that limit the performance …

Another study revealed that the serum selenium concentration ranged from 58 to 123 μg/L in infants, adults, and expectant mothers . Mirzaeian et al. assess Se intakes in students in Isfahan, Iran. Food intake analysis indicated that the …

1123 Accesses. 7 Citations. 5 Altmetric. Metrics. Abstract. Whether Selenium (Se) deficiency relates with adverse prognosis in Chinese patients with heart failure (HF) …

The recommended intakes of selenium have been calculated from the requirement for optimum plasma glutathione peroxidase (GPx) activity that must, …

The close relationship between blood or red-cell glutathione peroxidase activity and selenium concentrations ( Figure 3) is useful for assessment in people with a relatively …

Selenium level of 5 μg/L was imposed by the United States Environmental Protection Agency (USEPA) as a chronic aquatic life criterion [59,60]. It is the highest selenium concentration in surface water to which an aquatic community can be exposed indefinitely without resulting in an unacceptable effect .

air, with an average selenium concentration estimated to be below 10 nanograms per cubic meter (ng/m ). (1) Drinking water usually contains selenium at very low levels (usually less than 0.01 milligrams per liter [mg/L]). However, occasionally, higher levels of selenium may be found in drinking water, usually in areas

Selenium levels are usually lower in CKD patients than normal people [25,26,27,28]. ... In the sensitivity analyses, the association of genetically predicted selenium levels concentrations with eGFR and BUN was robust, and no directional pleiotropy was found in the MR-Egger analysis.

where available selenium levels in the soil are low. Selenium concentrations in legumes and grasses vary when these plants are grown on selenium-normal soils; however, Ocilla usually contains the highest level, and this may be two to ten times as much as is in the gross forage." In areas where soil selenium levels are …