View clinical trials related to Oxidative Stress.
Filter by: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.
Out-of-hospital cardiac arrest (OHCA) is one of the leading cause of death in the world. In Slovenia approximately 25% of resuscitated patients survives to discharge from hospitals, usually with poorer functional status. One of key pathophysiological process responsible for poorer functional status is global hypoxic-ischemic injury, which is two-stage. Primary stage occurs immediately after cardiac arrest due to cessation of blood flow. With return of spontaneous circulation a secondary injury occurs, of which the leading process is an imbalance between oxygen delivery and consumption. Reperfusion exposes ischemic tissue to oxygen, resulting in the formation of large amounts of highly reactive oxygen species (ROS) within minutes. ROS lead to oxidative stress, which causes extensive damage to cell structures and leads to cell death. Consequently, necrosis and apoptosis are responsible for organ dysfunction and functional outcome of these patients. Such injury of neural tissue causes brain damage, which is ultimately responsible for poor neurological and thus functional outcome of OHCA survivors. The extent of brain damage can be determined in several ways: clinically by assessing quantitative and qualitative consciousness and the presence of involuntary movements in an unconscious patient, by assessing activity on electroencephalographic record, by imaging of the brain with computed tomography and magnetic resonance imaging, as well as by assessing levels of biological markers of brain injury. Of the latter, the S-100b protein and neuron-specific enolase have been shown to be suitable for such assessment. Oxidative stress is counteracted by the body with endogenous antioxidants that balance excess free radicals and stabilize cellular function. Vitamin C (ascorbic acid) is the body's main antioxidant and is primarily consumed during oxidative stress. Large amounts of ROS rapidly depletes the body's vitamin C stores. Humans cannot synthesise vitamin C and enteral uptake of vitamin C is limited by transporter saturation. On the other hand, parenteral (venous) dosing of vitamin C can achieve concentrations of vitamin C above physiological and thus produce a stronger antioxidant effect. The beneficial effect of parenteral dosing of vitamin C has been establish in several preclinical and clinical studies in patients with ischemic stroke and cardiac arrest. The investigators hypothesize that there is a similarly beneficial effect of vitamin C in survivors of OHCA.
In the current study the investigators intend to evaluate the mode of anesthesia on ischemia modified albumin and outcome in patients with traumatic brain injury undergoing emergency craniotomy
This research aims to determine if melatonin supplementation, through improvements in sleep quality, increases the ability to repair oxidative DNA damage and reduce lipid peroxidation levels among nightshift workers.
Treatments are an administration of a mixed extract of Garcinia mangostana 400mg and Solanum Lycopersicum Fructus 200mg (OKSI(R) POM TR 193324351) and placebo control.
The aim of the study is to investigate the effect of preoperative epidural dexmedetomidine compared to dexamethasone on postoperative pain control, analgesic consumption and oxydative stress response in patients undergoing thoracic surgery
A prospective double blind, placebo-controlled, randomized cross-over trial to evaluate the effect of lowering cerebral blood flow on the ventilatory chemoreflexes (acute hypoxic and hypercapnic ventilatory responses).
The project will be structured in 3 main parts: 1. Effect of sera of ESRD patients on HD using Theranova dialyzer on high-Pi induced vascular calcification in an in vitro model of rat VSMCs. 2. Effect of sera of ESRD patients on HD using Theranova dialyzer on oxidative stress pathways in an in vitro model of rat VSMCs vascular calcification. 3. Study of RNA sequencing, transcriptome analysis gene expression of time course high-P challenged VSMCs studying the effect of sera of ESRD patients on HD using Theranova dialyzer
To explore the effect of induction and maintenance of anesthesia with etomidate on hemodynamics and oxidative stress in diabetic patients.
Recently, a new synthetic marker was developed, based on a molecule that is composed of Amino Acids and Linoleic Acid and Neucleic Acid, which is capable of detecting even minor changes of oxidative stress. The investigators would like to assess the usefulness of this marker during positive pressure pneumoperitoneum, during laproscopic surgery, with or without intenstinal resection (ischemia induced by intra-abdominal pressure and vascualr compromise).