View clinical trials related to Oxidative Stress.
Filter by:Purpose: This study investigates the effects of dietary zeolite + dolomite on performance, exercise-induced acidosis, oxidative stress, inflammation and intestinal barrier dysfunction in trained people. Hypotheses (H1): Zeolite + dolomite increase performance in an ergometer step test Zeolite + dolomite reduce exercise-induced acidosis Zeolite + dolomite reduce oxidative stress Zeolite + dolomite reduce inflammation Zeolite + dolomite improve intestinal barrier dysfunction
Ingestion of 3 ounces of pistachio nuts per day for two weeks before and the day of cycling intensely for 75 kilometers will support substrate utilization during exercise (as determined through metabolomics) and improve performance compared to water only, and attenuate inflammation, oxidative stress, and immune dysfunction during 24 hours of recovery.
The purpose of this study is to determine the safety, bioavailability, and effectiveness of an organic yeast-selenium compound in reducing brain oxidative stress. Oxidative stress in the brain has been linked to a variety oif disorders including Alzheimer's disease. Selenium is a very powerful antioxidant that could prove useful in reducing the harmful effects of oxidative stress in the brain and may help prevent diseases such as Alzheimer's. Our recent work has demonstrated that the specific type of selenium compound greatly influences it's ability to enhance brain health and prevent Alzheimer changes in mouse models of this disease. This study will enroll 24 participants and will allow us to test the hypotheses that yeast-selenium supplementation is safe in the elderly, and that our specific formulation reduces brain oxidative stress.
The purpose of the present investigation is to compare the responses and adaptations of young and elderly individuals to repeated eccentric exercise in regards to muscle function and redox homeostasis in a side-by-side comparison.
The overall purpose of this study is to obtain a better understanding of the biological response of red blood cells to sulforaphane contained in fresh broccoli sprouts that have been put through a blending process. This study will use commercially available fresh broccoli sprouts certified by Brassica Protection Products LLC (BroccoSprouts®). This product can also be purchased at some local grocery stores in the produce section. It is believed that NRF2, a transcription factor encoded by the NFE2L2 gene, plays a role in the regulation of defense against oxidative stress. The detrimental accelerated breakdown of sickle cell disease (SCD) red blood cells (SS RBC) is partially due to reduced anti-oxidative capacity. Previous analysis of SS RBC microRNAs revealed that a reduced level of NRF2, the master regulator of anti-oxidative stress capacity, contributes to reduced resistance to oxidative stress and increased hemolysis; NRF2 also induces fetal hemoglobin (HbF), which is known to prevent SS RBC sickling. First, erythroid progenitors from normal and SCD subjects will be tested ex-vivo to find out how sulforaphane, a natural NRF2 activator, affects the oxidative stress capacity, HbF expression, and microRNA expression of red cells. Second, a pilot clinical trial will be conducted to determine the safety and physiological effects of 3 weeks of daily consumption of broccoli sprout homogenate in a cohort of Hb SS/SB0 thalassemia adult SCD patients. During this study, subjects RBCs will be assayed for changes in anti-oxidative stress capacity and microRNA composition in mature SCD red blood cells.
Antioxidants are important for having a good memory and for smart thinking when people get old, and that is important for everyone's quality of life. This research will find out if normal aging and Alzheimer's disease use up brain antioxidants. It will develop a new imaging tool that can help doctors to stop cognitive decline.
High lipid peroxidation and altered antioxidant defenses have been frequently reported in Alzheimer's disease patients. The purpose of this study is to investigate susceptibility to photo-oxidation of isolated erythrocyte membranes, in patients affected by Alzheimer's disease and age- and sex-matched, non demented subjects.
Preterm infants are born with immature lungs and often require help with breathing shortly after birth. This traditionally involves administering 100% oxygen. Unfortunately, delivery of high oxygen concentrations leads to the production of free radicals that can injure many organ systems. Term and near-term newborns deprived of oxygen during or prior to birth respond as well or better to resuscitation with room air (21% oxygen) compared to 100% oxygen. However, a static concentration of 21% oxygen may be inappropriate for preterm infants with lung disease.Purpose of the study is to investigate if preterm neonates where resuscitation is initiated with 21% fiO2 and adjusted to meet transitional goal saturations (Limited oxygen strategy or LOX) would have less oxidative stress as measured by the oxidative balance ratio of biological antioxidant potential/total hydroperoxide compared to infants where resuscitation is initiated with pure oxygen and titrated for targeted saturations of 85-94% (Traditional oxygen strategy or TOX). Secondary outcomes of interest included need for other delivery room resuscitation measures, respiratory support and ventilation/oxygenation status upon neonatal intensive care unit (NICU) admission, survival to hospital discharge, bronchopulmonary dysplasia and other short-term morbidities.
The investigators hope to learn about the effects of whole grapes, in the form of freeze-dried grape powder, on markers of health. Phytochemical rich food consumption is associated with protection against chronic diseases such as cardiovascular disease (CVD) demonstrating the ability to modify endothelial function and lipemia, but exact causal mechanisms are still not well understood. The investigators will examine metabolic and mechanistic effects of consumption of whole grape powder in chronic as well as acute settings in response to meal challenges by testing blood samples to determine if markers of health have improved. The central hypothesis of this project is that consumption of grapes in the form of a polyphenol-rich freeze-dried whole grape powder (WGP) will attenuate chronic and meal induced oxidative stress and inflammatory responses in obese individuals.
The objectives of this clinical trial are to evaluate the effectiveness of an iridoid enriched beverage containing noni and cornelian juices and olive leaf extract on advanced glycation end product levels.