View clinical trials related to Oxidative Stress.
Filter by:Hypoperfusion, hypoxia and ischemia occurs in circulation as a result of anemia. All of these situations lead to oxidative stress and endothelial dysfunction in the organism. In this study, the investigators aimed to investigate the oxidant-antioxidant balance and asymmetric dimethylarginine (ADMA) levels in patients that have symptomatic anemia in need of erythrocyte suspension (ES) transfusion. To the best of the investigators knowledge, there have been few studies in the literature on anemia and total oxidant, total antioxidant and ADMA levels. We aimed to observe changes in oxidative - antioxidant ADMA levels before and after ES transfusion.
The European Space Agency (ESA) runs a research centre in Antarctica as an earth-based model for long duration deep-space missions. Just like astronauts travelling into space, crew-members overwintering at this Concordia base are exposed to a number of extreme environmental stressors; including high altitude (approximately 3800m); extreme cold; long periods of 24 hour darkness or daylight; and complete isolation. The investigators will recruit up to 30 over-wintering crew members working at this station for ESA over a 2 year period and observe how their bodies adapt and respond to the stress of living and working in this environment. The investigators will collect blood, saliva and urine samples, together with ultrasound images of muscle mass and grip strength measurements at regular intervals throughout their deployment to Antarctica. These samples will be transported back to Southampton to be analysed for biochemical levels of stress. During the final month of their stay, all participants will be randomised to receive a daily nutritional drink which is either high or low in targeted dietary supplements. Following similar studies that the investigators has successfully performed over shorter durations at high altitudes previously, they hypothesise that levels of stress experienced in extreme environments such as Antarctica or deep space can be reduced with targeted nutritional supplementation. These findings may become important to members of the general public as commercial aviation moves increasingly towards using low space-orbital vehicles to drastically reduce international travel times over the coming decade.
The purpose of this study is to investigate Thiol-disulfide balance in patients with cervical preinvasive lesions
It is used by music therapists to help the social, physical, emotional, psychological and psychological needs of patients. In a study, music has a positive effect on pain, anxiety, depression, shortness of breath, mood, facial expression and speech . The aim of this study was to investigate analgesia consumption during egg collection and postoperative period of music therapy and to compare and evaluate oxidative stress parameters in blood and follicle fluids.
The purpose of this study is to investigate thiol‑disulfide balance in early stage endometrium cancer patients.
Solarplast is a unique mixture of antioxidant enzymes and single antioxidant molecules that are capable of attack oxidants that cause damage to the cells in the human body and cause premature aging. This mechanism may provide protection from stress, such as free radicals, heat, infection, as well as reduce inflammation and participate in the repair mechanism of the intestinal tract. Participants will consume Solarplast, or placebo, for 45 days with blood draws at day-0 and -45 in order to assess antioxidant capacity.
This study will examine the effects of Oceanix™, an antioxidant supplement, on muscle performance, immune and endocrine function, recovery and safety in participants undergoing resistance training. Measures of muscle performance will include isometric testing in the bench-press and mid-thigh pull and ground reaction forces in the counter movement- and squat-jump. Markers of immune function will include salivary immunoglobulin A (IgA) as well as serum total antioxidant capacity (TAC) and superoxide dismutase (SOD) while endocrine function will be measured by salivary cortisol and testosterone. Recovery will be measure by plasma creatine kinase (CK) and perceptual measures will be assessed using a validated perceived recovery status (PRS) scale. Safety metrics will be indicated by a comprehensive metabolic panel (CMP), complete blood count (CBC), and urinalysis (UA). Additionally, the modified Borg Rating of Perceived Exertion (RPE) will be administered following each training session to grade physical exertion and monitor progression of the training protocol.
The present study aims to support previous research on the effects of antioxidant therapy on the outcome of diabetic retinopathy and local oxidative stress values. The researchers intend to evaluate 56 patients with proliferative diabetic retinopathy undergoing the vitrectomy procedure, who will be assigned to a placebo group or combination antioxidant therapy. Each group will receive the intervention for 2 months. This intervention consists of taking one tablet (placebo or antioxidant therapy) orally, once a day. At the beginning of the study, only blood samples will be collected to evaluate the state of oxidative and metabolic stress at a systemic level. After 2 months of intervention, blood samples will be taken again on the day of the intervention, adding the samples of aqueous and vitreous humor obtained during the vitrectomy. The results obtained between both groups and the different analysis matrices will be compared.
Vertigo is a common complaint in the Emergency Department (ED). The differential diagnosis of central and peripheral vertigo is a difficult issue that directly affects mortality. Magnetic resonance imaging (MRI) is the preferred diagnostic tool, but may not be suitable in all patients due to logistic and economic conditions. In this study, the investigators evaluated the role of thiol/disulfide homeostasis (TDH) parameters and ischemia modified albumin (IMA) levels to assist in the value of being used instead of MRI.
Aim of this study is to investigate the relationship between heme oxygenase-1 enzyme level and angiographically determined SYNTAX score in patients with suspected stable coronary artery disease. Consecutive patients who are deemed to undergo coronary angiography due to high pre test probability or evidence of cardiac ischemia in imaging studies will be included in the study. Patients with coronary artery bypass surgery history and severe comorbid illnesses such as active malignancy, chronic obstructive lung disease, stage 3-5 chronic renal failure will be excluded. Serum heme oxygenase levels will be measured by ELISA method and SYNTAX score will be calculated from coronary angiography.