View clinical trials related to Selenium Deficiency.
Filter by:Selenium is an important trace element for human for its multiple roles such as the antioxidant activity. Previous evidences showed that critically ill patients may benefit from selenium supplement but the dose and results are controversial. Patients after operations for acute abdomen usually suffer from sepsis and stress. The aim of this study is to investigate the efficacy of selenium replacement in critical patients of acute abdomen, to see the impact on prognosis.
The project aims to study the effects of inclusion of sunflower oil, vitamin E and selenium in the diet of dairy cows on milk composition and the influence of modified milk on nutrition and health of elderly. To achieve those goals, two experiments will be conducted, both lasting 12 weeks. In the first one, 32 cows at the beginning of lactation will be allotted in a completely randomized block design with a 2 x 2 factorial arrangement of treatments, as follow: 1) control diet; 2) control diet plus selenium and vitamin E; 3) control diet plus sunflower oil diet; 4) control diet plus sunflower oil, selenium and vitamin E. This experiment seeks the development of modified milks through nutritional manipulation of cow's diet. Concomitantly, in the second experiment, 132 elderly people will receive the four different kinds of milk produced in the first experiment in a completely randomized block (gender) design. The selection of the elderly for each group shall be composed clinical evaluations. Will be conducted biochemical tests before and after supplementation of milk consumption (serum α-tocopherol, selenium, analysis of fatty acid profile). Assessment of nutritional status will be made body mass index (BMI) with each participant before and after the experiment of 12 weeks, including body composition by multifrequency bioelectrical impedance analysis (BIA), evaluating the strength of pressure of the hand portable dynamometer, demographics and food consumption. The study of human nutrition and health will be held in the form of a double-blind study. The second experiment aims to study nutrition and health of elderly people, as it is expected that milk produced with better fatty acid profile, vitamin and minerals can improve the inflammatory profile of markers of the elderly. This project is important for the human population in general, particularly elderly people, health workers, human and animal nutritionists, and especially for the milk chain, as it has a potential to develop new dairy products and boost milk consumption.
The overall hypotheses of this project is that severe sepsis is associated with endothelial dysfunction in pediatric patients and that selenium deficiency is associated with changes in biological markers of endothelial dysfunction and that these changes, in turn, are associated with worse clinical prognosis.
In this observational study the effect of selenium supplementation on the postoperative inflammatory response and clinical course should be examined in (approximately 100) adult patients undergoing elective heart surgery combined with extracorporeal circulation. Selenium is one of the essential trace elements with a variety of important immunological and antioxidant properties. The pathophysiological relevance of different selenium-dependent reactions has already been demonstrated in human and in animal experiments. It is essential for the enzymatic functions of selenium-containing proteins such as the glutathione peroxidase, which in turn affects the leukotriene, thromboxane and prostacyclin metabolism. In addition, selenium has a significant influence on various liver enzymes, therefore selenium deficiency leads to oxidative or chemically induced liver damage.
The purpose of this study is to determine the amount of selenium as selenomethionine that is required to optimize selenoprotein P in selenium-deficient Chinese subjects