View clinical trials related to Oxidative Stress.
Filter by:The role of oxidative stress in disease pathology is increasingly recognized. At present, the development of biomarkers of this state is in its infancy and the availability of clinically validated assays is lacking. This study will better determine normal values for specific biomarkers of oxidative stress. It will also investigate normal values of taurine, a natural occurring oxidative stress protectant. A primary and specific application of this data is for the evaluation of oxidative stress, levels of the natural protectant taurine, and of associated inflammation in the context of cystathionine β-synthase (ClinicalTrials.gov study: Oxidative Stress Markers in Inherited Homocystinuria and the Impact of Taurine).
Ischemia-reperfusion injury resulted from pneumoperitoneum during laparoscopic surgery have been reported in some literatures. There are no studies investigating the time course of changes in oxidative stress markers in volume-controlled ventilation (VCV) and pressure-controlled ventilation (PCV) modes. The aim of this study is to compare the alterations in oxidative stress in two different ventilation strategies during gynecologic laparoscopic surgery. Methods: Fifty-two patients of ASA physical status I or II were randomly assigned to receive either VCV or PCV during laparoscopic gynecologic surgery. Blood gas analysis and ventilation variables were recorded 1 minute before (T1) and 1 hour after (T2) pneumoperitoneum. Blood samples for malondialdehyde (MDA) measurement were collected at seven points: 1 minute before (T1) and 1 hour after (T2) pneumoperitoneum; 30 minutes, 60 minutes, 90 minutes, and 120 minutes after deflation (T3~T6); and 24 hours after deflation (T7).
The purpose of this study is to investigate the possible antioxidant and anti-inflammatory effects of yogurt enriched with polyphenols after 2-week consumption by healthy individuals.
The purpose of this study is to investigate the gene expression and activity of SIRT1, and forkhead box O3 pathway by means of investigating target genes MnSOD and catalase in multiple sclerosis and healthy subjects. Also, we investigate the effect of melatonin on interaction between SIRT1 activity and target genes MnSOD and catalase in multiple sclerosis and healthy subject .Additionally, we evaluate effect the probable effect of melatonin treatment on gene expression and activity of above-mentioned genes in peripheral blood mononuclear cells of healthy subjects-treated with H2O2.
The purpose of this research study is to learn if and in what amount a compound from hops, called xanthohumol (ZAN-tho-HUE-mol), prevents damage to DNA and oxidative stress. The human body is constantly exposed to oxidative stress from environmental compounds (e.g. air pollution) which may cause damage to DNA. The human body can repair some DNA damage, but too much DNA damage is harmful and may lead to cancer. Research done at OSU and around the world has shown that xanthohumol can stop or slow processes that lead to cancer.
To determine the ideal sexual abstinence time for producing high quality sperm
Iron supplementation is very common in athletes, probably due to its catalytic role on the oxygen transport and optimal function of oxidative enzymes and proteins during exercise. Iron is also characterized as a potent pro-oxidant, as it can lead to increased production of reactive oxygen and nitrogen species (RONS) that are involved in critical biological processes, such as gene expression, signal transduction and enzyme activity. In exercise, low levels of RONS are essential for optimal force production, whereas excessive production of RONS can cause contractile dysfunction, resulting in muscle weakness and fatigue. On the other hand, RONS are involved in signaling pathways and up-regulation of the expression of several genes, and therefore, RONS can provoke favorable effects such as training adaptations. The purpose of the present study is to investigate the effect of iron supplementation on redox status, muscle damage and muscle performance after an acute bout of a valid muscle damaging eccentric exercise model in adults and children.
Alzheimer's disease (AD) is commonly associated with behavioural changes such as agitation. Severe agitation is important to treat because it not only increases progression of AD and physical health problems (increased falls and weight loss), but it also decreases quality of life and increases caregiver stress. Currently prescribed treatments (i.e., antipsychotics) for agitation in AD do not work in everybody and when they do work the effect is small and they increase the risk of harmful side effects, including death. As a result, there is an urgent need for safer medication options. The cannabinoid nabilone can now be prescribed in capsule form for appetite and pain killing effects. Nabilone's calming effects may benefit those with agitation, and help the weight loss and untreated pain frequently associated with agitation. Through a clinical trial, the investigators hope identify the benefits of nabilone in the treatment of agitation in AD. The investigators objective is to determine whether nabilone is an efficacious and safe treatment for agitation, as well as having benefits for pain, weight and behavioural symptoms. This will be a 14 week clinical trial (participants take nabilone for 6 weeks, placebo for 6 weeks (order randomized) with 1 week between treatments). The investigators will assess and compare agitation, weight, pain, memory, behaviour and safety. Nabilone is a new class of medication that may be a safe and effective treatment for agitation in AD, with added benefits on appetite and pain. Reducing these symptoms would increase quality-of-life and reduce caregiver stress.
The investigators will do an intervention on four groups of previously sedentary post-menopausal women which consists: group 1 - 30 minutes per day of physical protocol; group 2 - 50 minutes per day of physical protocol; group 3 - 70 minutes per day of physical protocol; group 4 - sedentary control women. The protocol consists of three sessions per week of concurrent training (half session with aerobic training and the other part with weight training). Inflammatory and oxidative parameters will be analyzed and the investigators hypothesized that 90 minutes per week of concurrent training (group 1) will reduce the inflammatory parameters and the oxidative stress, and this improvements will be greater so much as the longer the sessions (a dose-response effect). The physical activity practiced out of the intervention will be controlled by a questionnaire (the commuting and leisure sections of the International Physical Activity Questionnaire) and the food intake by a 24-hour food recall.
The purpose of this study is to evaluate modifications of plasma protein carbonyls and malondialdehyde levels in endurance-based athletes after three weeks of pomegranate juice consumption.