View clinical trials related to Healthy Volunteers.
Filter by:Biopsies of the outer thigh muscle and serum samples will be collected from untreated healthy subjects. These biological samples will be provided to the Diabetes Research Unit Translational Biomarker Laboratory for use in developing and validating human muscle malonyl CoA and serum malonate biomarker assays.
PF-04457845 has been shown to temporarily decrease the dream (REM) period of sleep in rats, which suggests that PF-04457845 is active in rat's brains. This study is designed to see whether this is also the case in man.
Background: - Obesity is the result of many factors, including genetics and lifestyle, such as over-eating high-calorie foods and not being physically active. Obesity affects approximately one third of adults in the United States. Researchers often study individuals who are already overweight and obese, but another approach is to examine people who stay thin despite eating whatever they want and not exercising. Studying these thin individuals will enhance understanding of why some people become obese and others do not, which may lead to novel treatments for obesity. Objective: - To study the metabolism, body composition, body temperature, physical activity, and blood chemistries of healthy lean adults before and after adding 1,000 extra Calories per day to their normal diet. Eligibility: - Healthy adults, 30 to 50 years of age, who have never been overweight after adolescence, who are currently weight-stable, sedentary, and eating without restrictions. Design: - The entire study will take about 9 weeks and will include the following outpatient and inpatient visits: <TAB>- Outpatient screening visit and monitoring: Physical examination and blood test at screening; then, one week of physical activity monitoring (e.g., with a pedometer-like device called an accelerometer) and completing a food diary. <TAB>- Baseline inpatient visit (5 days): Volunteers will eat a normal diet to maintain body weight. Energy expenditure, body composition, physical fitness, activity level, and eating behavior will be measured. Urine and blood samples will be taken. Volunteers may go home for the weekend or stay at the metabolic clinical research unit (MCRU). <TAB>- Inpatient feeding week 1 (5 days): Volunteers will eat a normal diet plus milkshakes for added calories. All the same measurements during the baseline week visit will be repeated. <TAB>- Outpatient feeding weeks 2 3: Volunteers will eat breakfast at the MCRU everyday for the next 2 weeks and take prepared meals home with them (volunteers may also stay at the MCRU for the 2 weeks if they prefer). Volunteers will drink a non-radioactive (heavy) water called doubly labeled water to measure energy expenditure in their normal living environment Daily urine samples will be collected. <TAB>- Inpatient feeding week 4 (5 days): Volunteers will continue eating a normal diet plus milkshakes for added calories. This stay and measurement is identical to inpatient feeding week 1. - Volunteers will be contacted at 6 and 12 months to assess any changes in body weight, diet, and physical activity.
The purpose of this study is to determine whether AMAP102 is safe and well tolerated by humans.
To assess the safety and tolerability of escalating single and multiple doses of the compound in healthy volunteers
Recent reports showed that the opioid buprenorphine is a very potent sodium channel blocker. Buprenorphine not only exerts a strong antinociception, but also a long lasting antihyperalgesic effect. This antihyperalgesic effect is not observed for other clinically employed opioids but is common for local anaesthetics. The principal aim of the study is to compare the speed of onset and the time of recovery of motor blockage achieved by lidocaine and buprenorphine, respectively. The investigators hypothesize that the blocking capacity of buprenorphine is equal to the one of lidocaine.
The study will investigate how a new formulation of the study drug is absorbed, metabolised and distributed through the body, as well as its safety and tolerability in higher doses when given as single and multiple doses and as a single dose in the presence and absence of naproxen.
This study is primarily to evaluate the single dose pharmacokinetics of CP-751,871 and its effect on QT interval prolongation.
Background: - Many people can learn to use feedback about brain activity to modify that activity, but is it not known if people with Tourette syndrome can modify their brain activity. - Researchers have evidence that certain areas of the brain are involved in causing tics in people with Tourette syndrome. If people with Tourette syndrome can use feedback about brain activity to modify activity in those parts of the brain, they may be able to modify their brain activity to help control the tics. Objectives: - To determine if people with and without Tourette syndrome can learn to use thought to control brain activity. - To test whether people who have Tourette syndrome can learn to control brain activities, possibly helping to control tics. Eligibility: - Healthy volunteers ages 18 and older who are right-handed and are willing to not consume caffeine or alcohol for 24 hours before the study visit. - Patients with Tourette syndrome who have tics that can be observed and studied. - All participants must be able to undergo magnetic resonance imaging (MRI) scans. Design: - Healthy volunteers (two visits to the NIH Clinical Center over a 2- to 4-week period; visit may last up to 3 hours): - Screening visit, including physical examination and medical history, and a magnetic resonance imaging (MRI) scan if the individual has not had one performed at the National Institutes of Health in the past year. - Study visit: Functional MRI (fMRI) scan to allow researchers to see if volunteers can learn to control their brain activity during a scan. Volunteers will be asked to complete tasks as directed during the fMRI scan. - Patients with Tourette syndrome (three or four outpatient visits over a 4- to 6-week period; each visit may last up to 4 hours): - Screening visit, including physical examination and medical history, and an MRI scan if the individual has not had one performed at the National Institutes of Health in the past year. - Evaluation visit to ask questions about Tourette symptoms and to have patients complete questionnaires about their tics and their mental health. - Study visit: fMRI scan to allow researchers to see if patients can learn to control their brain activity during a scan. Patients will be asked to complete tasks as directed during the fMRI scan. - Final visit: Researchers will ask questions about tic symptoms, have patients complete questionnaires, and perform a brief exam. Afterward, patients will have an fMRI scan similar to the previous one. - All participants will be paid a small amount of money in compensation for their participation in the study.
Investigation of safety, tolerability, and pharmacokinetics of PF-00868554 following multiple oral administrations of PF-00868554 in Japanese healthy adult volunteers.