Clinical Trials About "Enantioselective cyclizations cyclization cascades samarium ketyl radicals" RSS

14:56 EST 19th November 2017 | BioPortfolio

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Showing "Enantioselective cyclizations cyclization cascades samarium ketyl radicals" Clinical Trials 1–25 of 94

Friday 17th November 2017

Early Administration of the Lutein/Zeaxanthin in Premature Newborns

Premature birth is the most common cause of mortality, morbidity and disability. Premature infants have a higher risk of developing damage in the eyes (retinopathy of prematurity ROP), in the central nervous system (intraventricular hemorrhage IVH), in the lungs (bronchial pulmonary dysplasia BPD), in the gut (NEC) and infections. Oxidative stress has been implicated in various capacities, in the etiology of these conditions. Lutein and Zeaxanthin are powerful anti-oxidants and...

Thursday 28th September 2017

Effects of Melatonin as a Novel Antioxidant and Free Radicals Scavenger in Neonatal Sepsis

Assess the efficacy of melatonin as an adjuvant in the treatment of free radical disease in septic preterms receiving melatonin compared to those on conventional treatment through measuring the level of Malondialdehyde as a marker of oxidative stress and by comparing other clinical and laboratory parameters of sepsis in both groups.

Wednesday 12th July 2017

Effects of Polyphenols Supplementation on Cycling Endurance

Endurance performance during high intensive exercises is mainly determined by the capacity of the aerobic metabolism. It generally induces muscle fatigue defined as the reversible decline in skeletal muscle contractile performance. Fatigue is multifactorial and is often associated with many physiological parameters including reduced neural input and disruptive metabolic changes in skeletal muscles such as lactic acidosis and the production of oxidative free radicals. Moreover, ...

Friday 23rd June 2017

The Effect of High Antioxidant Cacao on Behaviors in Children With Autism Spectrum Disorder

The purpose of this study is to determine if routine consumption of high antioxidant cacao can have an effect on the behaviors of children with Autism Spectrum Disorder. This is proposed as children with Autism Spectrum Disorder have elevated oxidative stress markers, such as, free radicals making them highly vulnerable to oxidative damage. Thus, it is proposed that foods high in antioxidant activity can offer protection against oxidative stress and thus impact behaviors.

Tuesday 30th May 2017

Panitumumab Skin Toxicity Prevention Trial

Background and rationale: EGFR represents the main and more studied signal activation pathway in the development of colorectal carcinoma. KRAS, NRAS, BRAF and PI3KA mutations and ERBB2 and MET amplification are responsible for most of the cases of primary resistance to anti-EGFR antibody treatments. Despite the identification of these resistance mechanisms, a primary resistance to the therapy was detected in a certain percentage of cases, in which tumour bio-molecular character...

Tuesday 23rd May 2017

Effect of Allopurinol for Hypoxic-ischemic Brain Injury on Neurocognitive Outcome

Neonatal hypoxic-ischemic encephalopathy (HIE) is a major cause of death or long-term disability in infants born at term in the western world, affecting about 1-4 per 1.000 life births and consequently about 5-20.000 infants per year in Europe. Hypothermic treatment became the only established therapy to improve outcome after perinatal hypoxic-ischemic insults. Despite hypothermia and neonatal intensive care, 45-50% of affected children die or suffer from long-term neurodevelo...

Wednesday 10th May 2017

Effects of a Food Supplement on Cognitive and Neuropsychological Functioning in Older Adults.

The increase in life expectancy is associated with a gradual aging of the population so creating new needs arising from this new situation. Memory ability declines with age and memory deficits are regarded as an initial symptom of dementia of Alzheimer's Disease (AD) type, one of the most prevalent cognitive disorders in older people. States and scientific community have been called to find preventive strategies acting against the consequent physiological cognitive decline with...

Thursday 23rd March 2017

Effect of an Antioxidant-rich Diet During Moderate Altitude Training

Athletes, especially in endurance sports, are at increased risk of oxidative stress and inflammation-related diseases and injuries. The production of reactive oxygen and nitrogen species (RONS) and inflammatory markers increase during exercise and especially during altitude training. Antioxidant supplementation is commonly used among athletes in the belief that it prevents oxidative stress and oxidative damage. A transient increase of RONS is however necessary to activate signa...

Tuesday 17th January 2017

Bioavailability of Ubiquinone and Ubiquinol in Older Adults

Coenzyme Q10 (or CoQ10) is a marketed supplement in US even though it can be synthesized in the body via complicated biochemical pathways. It exists in both reduced and oxidized states, namely ubiquinol and ubiquinone, respectively. It is commonly present in all cell membranes. The main function of CoQ10 is to participate in energy production. Further, the reduced form of CoQ10, ubiquinol, is appreciated as an important lipophilic antioxidant to protect free radical induced dam...

Sunday 4th December 2016

PrevenTion of Contrast-inducEd nephroAThy With urinE Alkalinization

Intravascular administration of iodinated contrast media is an essential tool for cardiovascular imaging and percutaneous coronary interventions. Nonetheless, the increasing incidence of contrast-induced nephropathy (CIN) has become an important and prognostically relevant problem along with the spreading of diagnostic and interventional procedures. CIN is largely dependent on oxidative damage and represents a considerable cause of renal failure, being associated with prolonged...

Tuesday 22nd November 2016

Bioenergetics and Protein Metabolism in Sporadic Amyotrophic Lateral Sclerosis

INTRODUCTION: Amyotrophic Lateral Sclerosis (ALS) is a degenerative disease of the motor neurones of the brain and the spinal cord. The pathophysiological mechanisms of the disease remain unknown. The average age of onset of ALS is about 60 years old, and the mean survival of patients is about 2 years. The disease is responsible for a progressive paralysis leading to death from respiratory failure. The only treatment available is the Riluzole, with a very modest efficiency on t...

Wednesday 16th November 2016

Clinical Investigation to Compare the Safety and Efficacy of Cellular Matrix to Those of Ostenil® Plus

Platelet-rich plasma (PRP) is an autologous product prepared from the patient's own blood, representing a powerful source of platelet-derived growth factors, particularly useful in the field of regenerative medicine. The active and sequential secretion of these growth factors induces different cell signaling cascades that activate angiogenesis, cell proliferation, cell differentiation, eventually leading to new matrix synthesis and tissue regeneration. The potential bene...

Monday 19th September 2016

Mechanisms of Auto-immune Encephalitis

Neurological and psychiatric diseases are one of the major health problems worldwide. Decades of fundamental and clinical research have led to the model that these disorders results from synaptic imbalance between excitatory, inhibitory and modulatory systems in key brain structures. Although the network and neurotransmitter systems involved have been delineated, the mechanisms leading to improper neurotransmissions remain poorly understood. One major limitation lays in the dif...

Monday 12th September 2016

Support for the Rhabdomyolysis in an Emergency Department

Rhabdomyolysis is a common condition in the UAA. Support is heterogeneous, it is in most cases a mass hyperhydration. The idea is to initially with an EPP simultaneously screened for the most affected by this disease and aggravating factors population, associated comorbidities. The rhabdomyolysis prognosis depends mainly on the etiology and associated comorbidities. - Acute renal failure and hyperkalemia are the major complications that worsen the prognosis. ...

Wednesday 17th August 2016

Amyotrophic Lateral Sclerosis and the Innate Immune System

Amyotrophic Lateral Sclerosis (ALS) is an aggressive, deadly disease. ALS leads to destruction of the neural pathways which control the conscious movements of the muscles. This destruction leads to muscular dystrophy with increasing difficulties in moving, breathing, swallowing, and speaking. In the last phase of an ALS patient's life it is necessary with respiratory therapy in order to breathe. In average an ALS patient lives 3 years from the time he or she gets the diagnose. ...

Monday 15th August 2016

Study of Copper Isotope in Head and Neck Cancer

The distribution of stable (non-radioactive) isotopes in living organisms is increasingly studied, in particular the zinc (Zn), copper (Cu) and iron (Fe), not only in primitive organisms, but also in mammals. The scientific community shows a growing interest in the study of the isotopic distribution of Cu in humans: this distribution can vary according to gender or nutrition. Concerning pathology, the isotopic distribution of Cu seems interesting in Wilson's disease or in ...

Thursday 21st July 2016

Ascorbic Acid Treatment in Congenital Glucocorticoids and Mineralocorticoids Deficiency Due to NNT Mutation

Nicotinamide nucleotide transhydrogenase (NNT) mutations cause glucocorticoid and mineralocorticoid deficiencies through decreased detoxification of reactive oxygen species (ROS) in adrenocortical cells. Ascorbic acid is well known by its high antioxidant activity due to the neutralization of free radicals and other reactive oxygen species. Preliminary results of NNT_p.G200S homozygous fibroblasts' treatment with 10 micro molar L-ascorbic acid shows significant improvem...

Friday 15th July 2016

Accuracy and Precision of Different Devices for the Monitoring of Pulsed Oxygen Saturation

Hypoxemia is a frequent situation in clinical practice, particularly in intensive care units or perioperative. The mortality and morbidity increase for cardiovascular reason, due to hypoxia has been reported several times. It is therefore important to detect hypoxemia very early and with accuracy. The objective is to correct the causes quickly and thus avoid or minimize complications. In addition to the risks associated with hypoxemia, the monitoring of Arterial Oxygen S...

Wednesday 15th June 2016

Paraoxanase Enzyme Activity in Patients With Pulmonary Diseases

Lipid per oxidation final products and free oxygen radicals are thought as initiator role for developing of cancer in the body. Level of paraoxonase in the patients with cancer varies. In this research, the investigators investigated the contribution of level of serum and bronchoalveolar lavage paraoxonase in the differentiation of benign and malignant lung disease patients. This research includes the patients that are diagnosis of lung cancer (research group) and benign pulmon...

Tuesday 24th May 2016

Remote Ischaemic Conditioning After Stroke Trial (ReCAST-2)

Stroke has an enormous impact on both individual and society. Novel treatments are required to relieve this burden and remote ischaemic conditioning (RIC) is one such approach. RIC refers to applying non-lethal ischaemia to an area distant from an organ you are trying to protect (e.g. the brain). Pre-clinical animal stroke studies have shown RIC to be neuroprotective and help restore functional outcome when compared to control. These outcomes are achieved simply by transiently ...

Monday 2nd May 2016

Gene Therapy for X-linked Chronic Granulomatous Disease

X-linked chronic granulomatous disease (X-CGD) is a rare genetic disorder, which affects boys. It is a primary immunodeficiency disorder which results from an inability of the white blood cells called phagocytic cells (or phagocytes) to kill invading bacteria and fungi. These cells have difficulty forming the free radicals (most importantly the superoxide radical due to defective phagocyte NADPH oxidase complex) which are important in the killing of ingested pathogens. In X-CGD...

Thursday 10th March 2016

Immune Response of Caudally Administrated Ketamine or Tramadol In Pediatric Lower Abdominal Surgery

Management of acute pain is one of the most important tasks of perioperative pediatric anesthesia. The alleviation of pain has been defined by the Society of Pediatric Anesthesia, on its 15th annual meeting as a basic human right, irrespective of age, treatment primary service responsible for the patient care. Pro-inflammatory cytokines increased by surgical trauma indirectly modulate pain through the release of substances like nitric oxide, oxygen free radicals, prostaglandins...

Friday 8th January 2016

Effect of Dexmedetomidine on Ischemia-Reperfusion Injury in Lower Extremity Operations

Ischemia reperfusion injury causes the release of free oxygen radicals. The selective alpha2-receptor agonist, dexmedetomidine, has an inhibitory effect on inflammatory responses during ischemic injury. The aim of this study is to evaluate the effect of dexmedetomidine on inflammatory responses during ischemia-reperfusion injury in skeletal muscle.

Tuesday 15th December 2015

Effect on Migraine Frequency of Combined Anti-oxidant Therapy: The MIGRANT Study.

Migraine affects 15% of Western Australians and is a leading cause of suffering and disability in our community (1,2). Research suggests that inflammation of the brain's coverings (meninges) by nerve cell inflammation and the release of 'free radicals', is a cause of migraine. N-acetylcysteine, Vitamin E and Vitamin C are powerful anti-oxidants (free-radical scavengers) that reduce brain inflammation and nerve activity. It is therefore possible these anti-oxidants could reduce ...

Wednesday 9th December 2015

Effects of Functional Ingredients in an Acute Metabolic Challenge Context

After an energy-rich meal the blood levels of glucose and lipids undergo a marked temporary increase, triggering a wave of oxidative stress due to the appearance of excess free radicals in adipose and muscle tissues. Elevated postprandial hypertriglyceridemia has been associated with increased risk of cardiovascular disease and type 2 diabetes. Hence, postprandial changes in different circulating biomarkers are potential predictors of cardiometabolic risk. In addition to the po...

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