View clinical trials related to Metabolism.
Filter by:The purpose of the study is to examine whether orally ingested oat avenanthramides (AVA) in oat flour cookies are bioavailable in humans by measuring plasma and urine concentrations of AVAs and their potential metabolites after ingestion. The blood and urine concentrations will be quantified at several different time points after the oat flour cookies are consumed to characterize the "concentration-time profile".
This study investigates the health benefits of whole grain wheat on cardiovascular/ cardio-metabolic health, including glucose metabolism, by means of applying a mixed meal challenge. This study also investigates the health benefits of whole grain wheat (WGW) on liver- and adipose tissue health and evaluates the potential of do-it-yourself (DIY) devices in quantifying health effects in a nutritional intervention study.
Healthy volunteers will be recruited to participate in a ten-week double-blinded crossover trial. The trial will consist of two, three-week periods of intermittent fasting, where subjects receive either antioxidant supplementation or placebo, the ordering of which will be randomly determined. A one-week preconditioning will precede each invention period, and a two week "wash-out" period will follow the first intervention period. Serum-based assays will be performed to assess levels of reactive oxidant species, antioxidant genes, sirtuins, and markers of mitochondrial biogenesis and aging. The investigators hypothesize that an intermittent fasting diet in healthy young volunteers will improve these markers of cellular aging and that these beneficial effects will be abrogated by the supplementation of antioxidants. This study is a proof-of-principle study that will shed light on the mechanism and effects of IF as an anti-aging dietary intervention in the absence of weight loss. It will inform the design of dietary interventions that are both effective in improving markers of aging and feasible for patients to practice on a long-term basis.
6-week, single site, two parallel arm, randomized, controlled trial comparing the effectiveness of a High Intensity Interval Training (HIIT) versus a continuous Moderate Intensity Training (MIT) program on cardiovascular and metabolic health outcomes in overweight adolescent males. HIIT training may be a potent time-efficient strategy to induce similar metabolic and cardiovascular adaptations typically associated with MIT.
The overarching goal of this program project grant is the development of technologies that lead to new methods for studying, detecting, and treating type 2 diabetes, and their integration with hypothesis-driven diabetes research projects. Project 4 of the grant, led by Dr. Craig Malloy at UTSW, will develop and apply new technology in MRI to test core hypotheses about the development of insulin resistance in people. The long-term goal is to develop technology to monitor metabolism in skeletal muscle, brain and the liver using magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS) in a 3 Tesla and 7 Tesla MRI scanners. These advanced imaging methods allow researchers to take pictures of the inside of the body and to measure metabolism as it occurs in the MRI scanner. Standard clinical MRI for medical diagnosis and treatment is performed in a 1 Tesla or 3 Tesla MRI scanner. A primary goal of the 7 Tesla research program is to develop a group of protocols for investigating specific metabolic pathways in adipose (fat) tissue, skeletal muscle and the liver. This study is being done to improve methods of imaging and measuring molecules in a 3 Tesla or 7 Tesla scanners.
The purpose of this study is to investigate metabolic effects of 3 different nutritional compounds. Fasting (36 hours) creates a catabolic state that is comparable with the catabolic state seen in acute illness. This study is a randomized, placebo cross-over study investigating 8 healthy men on 4 separated days (at least 3 weeks between trials). - High leucine content drink - Low leucine content drink - Low leucine content drink + HMB - Carbohydrate (isocaloric) The investigators hypothesize that these nutritional supplements may counteract catabolic processes in different ways and degrees.
The E-MECHANIC Ancillary Study will measure changes in 24-hour energy expenditure and spontaneous physical activity in a subset of 60 obese individuals enrolled in the main study. We aim to determine if changes in energy metabolism might explain why people don't lose the expected amount of weight in an exercise program.
The purpose of this study are: 1. to evaluate the involvement of CYP2D6, CYP3A4 and CYP1A2 (through dextromethorphan and caffeine challenges), and catechol-O-methyltransferase (COMT)in MDMA metabolism 2. to evaluate gender differences in the human pharmacology of MDMA 3. to study the influence of some genetic polymorphisms (CYP2D6, COMT, SERT) in the effects and pharmacokinetics of MDMA.
This study will investigate the non-growth-hormone-dependent metabolic effects of the hormone Ghrelin in growth hormone deficient subjects by examining the insulin tolerance as well as signal proteins in fat and muscle biopsies.
8 healthy male volunteers will be studied each on 3 occasions, ie - after 4 days on a weight maintenance diet containing 5% simple sugars + low physical activity - after 4 days on a weight maintenance diet containing 30% fructose + low physical activity - after 4 days on a weight maintenance diet containing 30% fructose + high physical activity At the end of each of these 3 periods, fructose induced hepatic de novo lipogenesis (13C palmitate synthesis in response to ingestion of a 13C fructose load) and plasma VLDL-triglyceride kinetics (measured with a bolus of 2H-labeled glycerol) will be measured