View clinical trials related to Oxidative Stress.
Filter by:CABG (coronary artery bypass graft) surgery is among the most common heart surgeries performed in the heart pump. In CABG surgery, operations performed on the beating heart without the use of CPB (off-pump) are frequently performed (30-60%) (1). To the best of our knowledge, there has been no study examining cerebral oxygenation values, oxidative stress levels and postoperative results in CABG operations.
Fibromyalgia (FM) is a very common but mysterious pain disorder characterized by chronic widespread muscular pain. Fatigue, anxiety and depression are common comorbidities. The syndrome is commonly associated with several symptoms, including fatigue, sleeping disturbance, cognitive impairment, and comorbid pain syndrome, especially irritable bowel symptoms and temporomandibular disease. Anxiety and depression are common psychiatric co-morbidies. Daily stress is believed to trigger or aggravate pain conditions. These symptoms can markedly affect patients' quality of life, and even lead to disability. So far, the etiology and pathogenesis are largely unknown, and diagnostic biomarkers and curative treatment remain to be developed. Recent technological advances enable scientists to explore mechanisms by genetic, transcriptomic, proteomic, and metabolomic researches. However, no definitive result has been concluded for clinical practice so far. In this study, the investigators use tailored questionnaires to evaluate fibromyalgia and associated symptoms, including numeric rating scale for soreness, widespread soreness index, Fibromyalgia impact questionnaire, Hospital Anxiety and Depression Scale, and perceived stress scale. The investigators also use metabolomics and lipidomic approach to probe the potential pathophysiology of fibromyalgia. In our prior translation research (PMID: 32907805), the investigators found that excessive LPC16:0 resulting from lipid oxidization inflicts psychological stress-induced chronic non-inflammatory pain via activating ASIC3. In this content, our prior translational research identified a potential nociceptive ligand that causes fibromyalgia symptoms, which is likely to function as biomarkers for diagnosis or disease monitor. In the current clinical investigation, the investigators aim to reversely translate the novel findings in animal studies and validate the bio-significance of LPC16:0 for fibromyalgia with clinical approaches.
Preterm infants are at risk of free radical mediated diseases from oxidative stress (OS) injury. Melatonin (MEL) is a powerful antioxidant and scavenger of free radicals. In preterm neonates, melatonin deficiency has been reported. Several studies tested the efficacy of melatonin to counteract oxidative damage in diseases of newborns such as chronic lung disease, perinatal brain injury, necrotizing enterocolitis, retinopathy of prematurity and sepsis, giving promising results. In these studies, the dosages of melatonin varied over a wide range. The present study was designed to test the hypothesis that oral administration of melatonin reduced OS and consequentially, the occurrence of intraventricular haemorrhage (IVH), necrotizing enterocolitis (NEC), retinopathy of prematurity (ROP) and bronchopulmonary dysplasia (BPD) in preterm newborns.
Exposure to radiation, such as during routine CTs, bone scans, or X-rays, causes oxidative stress which can damage the DNA (your genetic material) within your white blood cells. While the amount of DNA damage that may occur from one scan is not harmful to your overall health, there could be concerning damage in patients who are constantly exposed to this radiation. Currently, there is no way to prevent DNA damage during a medical scan. One potential way to fight the oxidative stress caused by radiation is to take an antioxidant before a scan. The purpose of this study is to see if a combination of antioxidants can protect someone from the damage that radiation causes to the DNA of their white blood cells.
Naval Special Warfare (NSW) operators are exposed to a variety of extreme environmental conditions and intense physical demands. In addition to breathing high pressure gases at depth, prolonged cold water immersion and inadequate recovery from sustained physical exertion negatively impact individual and team performance. Biotechnologies that could mitigate the effects of cold as well as support physical recovery represent a significant unmet need for the NSW operational community. Oxytocin (OT) has a wide range of actions both locally in the brain and peripherally in the body including skeletal muscle. These peripheral effects can be mediated by classic ligand-receptor activation given the abundant expression of the oxytocin receptor in peripheral tissues, along with local expression of OT in peripheral tissues where it is likely to act in an autocrine manner. Exogenous OT via intranasal administration is FDA Investigational New Drug (IND)-approved and has been demonstrated as an easy and safe method to increase circulating OT concentrations that may augment actions on peripheral tissues. Due to the pleiotropic effects of OT on whole body metabolism, thermogenesis, stress responses, pain, mood, inflammation, appetite, glycemic control, skeletal homeostasis, and skeletal muscle repair and regeneration, there is increasing interest in the administration of exogenous OT for benefits to human health, performance and resilience. However, the biological mechanisms by which OT exerts tissue-specific effects (e.g., skeletal muscle) remain poorly understood, particularly in humans. This project is designed to significantly advance this understanding while testing the central hypothesis that intranasally administered OT attenuates systemic and skeletal muscle oxidative stress and inflammation induced by the combined stressor of resistance swim exercise and hyperoxia.
The aim of the current study, therefore, is to investigate the effects of vitamin K2 supplementation on the physiological responses to an acute bout of resistance exercise.
Obesity, in addition to causing abnormal glucose and lipid metabolism, is also associated with altered plasma concentrations of multiple amino acids, including increased levels of branched-chain amino acids and decreased levels of glycine. The mechanisms and consequences of obesity- related glycine deficiency are unknown. The overall aim of this project is to comprehensively study glycine metabolic pathways in morbid obesity using stable-isotope tracer techniques in human subjects and validating kinetic findings using a cell model of oxidative stress. This will be a single-centre, observational study. 21 individuals with morbid obesity scheduled for bariatric surgery and 21 non-obese controls will be recruit. They will undergo different study visits and procedures and the human biological materials collected will be analysed for as per aims of the studies. We believe that the glycine metabolic pathways, possibly through the optimization of gluthathione (GSH) synthesis, may provide targets to develop novel therapeutic agents.
Infants of diabetic mothers who are failing to learn oral feeding by term age equivalence have greater CNS oxidative stress, which interact to predict poor neuroplasticity response to transcutaneous vagus nerve stimulation paired with oral feeding. We propose treating the oxidative stress in IDM infants prior to initiating taVNS, with an FDA-approved antioxidant (N-acetylcysteine, NAC) to improve CNS oxidative stress, which in turn regulates expression of many genes including BDNF, that may enhance motor learning.
End-stage kidney disease (ESKD) represents a serious public health problem in Mexico. Data from the United States Renal Data System (USRDS) have reported that the region of Jalisco (Mexico) is one of the places with the highest incidence rate of treated ESKD and use of peritoneal dialysis (PD). In patients with ESKD, oxidative stress (OS) has been recognized as a potential source of morbidity and mortality, since it is involved in the pathogenesis of atherosclerosis and other complications of ESRD. This can induce damage to DNA (nucleic acid), proteins, carbohydrates, and lipids. Another common complication in ESKD patients receiving PD is protein-energy wasting (PEW), which is characterized by the decline in the body stores of protein and energy fuels (that is, body protein and fat masses) due to the multiple nutritional and catabolic alterations that occur in this condition. Diverse factors can affect the nutritional and metabolic status of patients with PD, for which they require interventions to reverse protein and energy depletion. Nutritional counseling can be a useful tool in PD patients in order to improve compliance with nutritional recommendations. The strategies more used for PEW include oral nutritional supplementation. Therefore, the purpose of this study is assess the effect of oral nutritional supplementation on OS in PEW patients with PD.
Thiol disulfide levels will be determined using venous blood samples from pre- and postmenopausal women to evaluate oxidative stress in menopause. Furthermore, oxidative stress will be assessed according to age, and years since the start of menopause. Also, whether the presence of menopause related osteoporosis has any association with oxidative stress will be determined.