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Showing 1-20 of 7,765 trials
NCT07470866
The purpose of this clinical trial is to compare the amount of tafamidis in the blood of healthy adult participants after taking two different forms of tafamidis by mouth under fed conditions.
NCT07549828
This study aims to develop a standardized workflow for sebum sampling and metabolomics/lipidomics analysis using Sebutape. A total of 200 participants will be recruited, including healthy individuals, patients with skin diseases, individuals undergoing dermatological treatments or using skincare products, and a subset of healthy participants receiving short-term topical antibiotic intervention. The study will investigate sebum composition, skin microbiome profiles, and their interactions under different conditions to explore potential biomarkers and clinical applications.
NCT06212804
This is a first-in-human (FIH), randomized, placebo-controlled, double-blind, single ascending dose (SAD) study to assess the safety and tolerability of VIS954, a monoclonal antibody, in healthy adult male and female participants.
NCT00104325
Background: \- National Institute on Aging researchers are looking at studies that require large numbers of white blood cells for lab use. Standard blood samples do not provide enough white blood cells for these studies. Researchers want to use cytapheresis to collect white blood cells from volunteer donors. This procedure can collect larger amounts of white blood cells and reduce the amount of fluid and other cells that are lost. Objectives: \- To use cytapheresis to collect white blood cells for study. Eligibility: \- Healthy blood donors at least 18 years of age. Design: * Participants will be screened according to the usual blood donation procedures. * Participants will provide white blood cells through cytapheresis. The blood cells will be collected in a machine that separates the white blood cells from the rest of the blood. The rest of the blood will be returned to the donor. * Participants may have this type of donation every 56 days (six times per year). They will be asked to become a repeat donor. A donation schedule may be set up. * Once a year, participants will have blood tests to continue to be eligible as a donor.
NCT01517100
Background: \- The endocannabinoid system is involved in different body functions and processes. It helps regulate appetite and mood, and sends signals to the nervous system. It may also be involved in how the body produces insulin during digestion. Researchers want to test two drugs that work on the endocannabinoid system: nabilone and CP-945,598. These drugs may be able to affect insulin levels in the blood. This information may suggest possible new treatments for people with diabetes. Objectives: \- To study how the endocannabinoid system is involved in insulin production and action. Eligibility: \- Healthy men between 21 and 55 years of age. Design: * Participants will be screened with a physical exam and medical history. They will provide blood and urine samples. They will also have imaging studies to test their brain responses, especially to food-related cues. Some participants will also have a study visit to test their insulin resistance levels. * Participants will have four separate study visits 6 weeks apart. They will keep a food diary before each visit. At each visit, they will have one of the following combinations of drugs: * Double placebo * Placebo and nabilone * Placebo and low dose of CP-945,598 * Placebo and high dose of CP-945,598. * Participants will have follow-up visits 1 week after each study visit. Blood samples will be taken.
NCT06074159
The study trains clinicians to return personal exposure results to study participants in pregnancy cohorts, and measures outcomes for environmental health literacy for both clinicians and study participants.
NCT07550101
The goal of this clinical trial is to learn whether a community-based outreach approach can improve the collection of social and demographic information in adult primary care patients who may be harder to reach through standard clinic processes. The study focuses on patients who face potential barriers to care, such as limited income, housing instability, language differences, or other social challenges. The main questions it aims to answer are: * Does support from a Community Health Surveyor increase completion of a social and demographic questionnaire compared to usual care? * Does this approach improve participation among patients with social needs or barriers to accessing care? Researchers will compare usual care (standard questionnaire invitation methods) with an enhanced approach that includes proactive outreach and support from a Community Health Surveyor to see if this increases questionnaire completion. Participants will: * Be invited to complete a social and demographic questionnaire as part of routine care * Complete the questionnaire either independently or with support from clinic staff or a Community Health Surveyor (depending on group assignment)
NCT03986021
Background: Most adult women with irregular periods of unknown cause report symptoms dating back to early adolescence. This study aims to learn how girls' periods change in the 2 years after their first period. We are also looking at girls who may have a condition called PCOS. This will help researchers learn what healthy puberty looks like and how they can spot signs of hormone problems early on. Objective: To learn how long it takes girls to develop regular menstrual cycles after their first period. Eligibility: Healthy girls ages 8-14 who either (1) haven't had their first period but show signs of puberty, such as breast development and hair in the genital area; or (2) had their first period in the past 6 months Girls at risk for PCOS age 8-14 who have a mom or sister with PCOS Girls with irregular menstrual cycles age 11-17.5 To compare with the girls, we are looking at women \>=18-34 years old with PCOS, Healthy women \>= 18-34 years old without PCOS, and Mothers of pediatric participants age 18-65 Design: Both parents or guardians must allow their daughter to participate. They must attend all study visits with her. Participants will first be screened by phone. Those who qualify will be screened in person. They will have a physical exam. They will give blood and urine samples. They will have an ultrasound of their abdomen. They will fill out questionnaires. They will sit in a BOD POD for 6 minutes: This is an egg- shaped machine that takes body measurements. They have the option to provide DNA samples. Participants will have sets of visits at home or at the clinic about every 6 months. The number of visits in each set will depend on their menstrual cycle. Then they will have a final visit. Visits will include repeats of the screening tests. There are additional parts that participants may choose to be involved in depending on how involved they want to be. At home, participants will collect their urine daily to measure hormones. They will keep a diary of their periods. Adults: Women with known PCOS will complete the same Screening Visit as the girls and will collect dried urine specimens at home for 8 weeks; The Healthy control women group will complete the same Screening Visit as the girls and collect dried urine specimens at home for 2 menstrual cycles; The Mothers of pediatric participants group will complete a Screening Visit (informed consent, urine pregnancy test) and collect vaginal swab specimens at home for 2 menstrual cycles (approx. 8 weeks)....
NCT07073963
This research study is testing whether Mindfulness-Based Stress Reduction (MBSR) can help reduce fatigue in people with sarcoidosis. The study will also look at whether MBSR can improve symptoms of anxiety and depression. Participants will be placed into one of two groups: * One group will take part in an 8-week virtual MBSR program, attend weekly online sessions, keep a daily mindfulness journal, and complete surveys about fatigue, anxiety, and depression. * The other group will join a virtual support group once a month for 5 months and complete the same surveys. The goal is to see which approach is more helpful for improving fatigue and mental well-being in people with sarcoidosis.
NCT06768944
The purpose of this study is to determine the importance of the acute subjective experience induced by psilocybin (the primary component of "magic mushrooms") in facilitating positive outcomes. Participants in this study will be given psilocybin in combination with either a placebo or risperidone, an atypical antipsychotic that block the subjective effects of psilocybin.
NCT06637865
The goal of this clinical trial is to evaluate the safety and tolerability of single and multiple doses of IMP761 in healthy female and male volunteers aged 18-55 with no history of disease affecting the immune system or recent use of medication with effects on the immune system. The main question it aims to answer is: \- if IMP761 is safe and tolerable as determined by assessing vital signs, emerging (serious) adverse events, electrocardiography, and clinical laboratory tests. Researchers will compare IMP761 to a placebo (a look-alike substance that contains no drug) to see if single and multiple doses of IMP761 are safe and tolerable in healthy volunteers. Part B of the study also investigates the effect of IMP761 on the inhibition of the keyhole limpet haemocyanin (KLH) driven immune response compared with placebo. Participants will: * receive IMP761 or a matching placebo intravenously once in single dose (part A and B) and three times in multiple dose (part C) during a 4 day in clinic stay with 4-8 following visits. * receive KLH challenge * be monitored for up to 103 days after the first dose.
NCT07548645
This study looks at whether a daily dietary supplement called HOP Box can improve markers of biological aging and overall health in women. HOP Box contains 19 ingredients selected to support cellular health, metabolism, inflammation, and longevity. Thirty-five women between the ages of 35 and 60 will take the supplement twice a day for 90 days. Researchers will measure changes in biological age using an at-home blood test that analyzes DNA methylation patterns, track sleep quality, heart rate, and heart rate variability using an Oura Ring wearable device, and assess participants' self-reported quality of life using a validated health survey (PROMIS-29). There is no placebo or control group in this pilot study - all participants will receive the supplement and serve as their own comparison over time. The goal is to gather early data on whether HOP Box shows promising health effects in women, which would inform the design of a larger, more rigorous trial in the future.
NCT07548541
This randomized, double-blind, four-period crossover trial investigates the acute effects of creatine monohydrate, L-arginine, and their combined administration on anaerobic performance, jump performance, and cognitive reaction time in recreationally active adult males. Eighteen healthy male participants complete four experimental conditions in randomized order: placebo, creatine, L-arginine, and creatine plus L-arginine, with at least 72 hours between sessions. Sixty minutes after supplementation, participants perform the Stroop Color-Word Test, countermovement jump test, and Running-Based Anaerobic Sprint Test. Primary outcomes include peak power, average power, countermovement jump height, and incongruent Stroop reaction time. The study aims to determine whether acute co-supplementation produces greater ergogenic and cognitive benefits than either supplement alone or placebo.
NCT07388667
Researchers are looking for new weight loss medicines for people with higher body weight. The study medicine, MK-4082, is different from similar weight loss medicines because people take it as a pill instead of an injection. Before giving a study medicine to people with a health condition, researchers first do studies to find a safe dose level (amount) of the study medicine that can be used in future studies. The goals of this study are to learn about: * The safety of MK-4082 and if people tolerate it * What happens to different MK-4082 dose levels in a person's body over time
NCT06687928
A Randomized, Double-blind, Two-arm, Parallel-group, Single-dose, Phase 1 Study to Compare the Pharmacokinetics, Safety, and Immunogenicity of Subcutaneous CT-P6 and Herceptin in Healthy Male Subjects
NCT07221448
The goal of this clinical trial is to determine if a self-selected high potassium diet is easier to achieve and more effective at improving vascular health than a low sodium diet in generally healthy young adults who typically consume more than the recommended amount of sodium. The main questions it aims to answer are: 1. Is it easier for young adults to increase their potassium intake, rather than reduce their sodium intake? 2. Is a self-selected high potassium diet better at improving vascular health compared to a self-selected low sodium diet? Researchers will compare the effectiveness of an education-based intervention centered only on increasing dietary potassium intake against an education-based intervention centered only on reducing dietary sodium intake. Participants will be randomly assigned to receive comprehensive dietary education on adopting either a high-potassium diet or a low-sodium diet. Education will be delivered in four weekly one-on-one sessions. Following the four-week education period, participants will be encouraged to change their diet based on what they have learned. Measures of dietary compliance (urine samples and diet records) and cardiovascular health (blood pressure, endothelial function) will be assessed at two, four, and six months post-education.
NCT07548606
Researchers have designed a study medicine called opevesostat as a new way to treat prostate cancer. The purpose of this study is to learn what happens to opevesostat in a person's body over time (a pharmacokinetic or PK study). Researchers will compare what happens to opevesostat in the body when it is given with and without another medicine called itraconazole.
NCT03535129
Background: Problem drinking affects nearly half the people who drink alcohol. Drinking alcohol affects a person's social behavior and brain structure, but researchers don't have a good understanding of how. They want to test a technique called neurofeedback to learn more about how to treat problem drinking. Objectives: * To study what happens in the brains of people who drink alcohol when they look at pictures of social things and of alcohol. * To learn if people can control brain activity in a magnetic resonance imaging (MRI) scanner and if this helps people with drinking. Eligibility: * Adults ages 21 to 65 who have an alcohol use disorder. * Healthy volunteers ages 21 to 65 Design: Participants will be screened with * Physical exam * Medical history * Blood, urine, and heart tests * Mental health interview * Questions about their alcohol drinking. At each session, participants will have: * A urine test for drugs and pregnancy. If they test positive, they cannot participate. * A breath alcohol test and assessment for alcohol withdrawal. Participants will complete surveys, talk to researchers about behaviors, and play games. Participants will have MRI brain scans. The scanner is a metal cylinder in a strong magnetic field. They will lie on a table that slides in and out of the scanner for 1-2 hours. Participants will do tasks in the scanner: * They will look at pictures, sometimes of alcohol. * They will try to hit a goal. Some participants will get feedback during this task. They will see how their brain activity changes or how someone else's changes. Participants may have follow-up phone questions at least 3 times over about 6 months.
NCT05127109
This is a research study to determine if a particular method of providing nutrition improves the clinical outcomes of patients in the intensive care unit (ICU) who have undergone abdominal surgery and would require nutrition delivered via the bloodstream (called total parenteral nutrition or TPN). The nutrition method we are testing is a structured nutrition delivery plan that involves tube feeding, oral nutrition supplements, and the use of a device (called an indirect calorimeter or IC) to measure calorie needs. This study will also use two devices to measure fat and muscle mass to examine changes during hospitalization. Subjects will be followed throughout hospitalization where nutrition status and fat and muscle mass will be closely monitored. Study activities will begin within 72 hours of a patient's abdominal surgery. TPN (total parenteral nutrition, a method of feeding that bypasses the usual process of eating and digestion) will be started, a non-invasive method of assessing calorie needs (indirect calorimetry (IC)) will be started, a urine sample will be collected to help assist in protein needs, and fat/muscle mass will be measured using bioelectrical impedance analysis (BIA), and an ultrasound. This is a minimal risk study and all products/devices used are non-invasive and FDA-approved. Indirect calorimetry and urine sample collection will be conducted every 3 days during the stay in the Intensive Care Unit - ICU, then every 5 days until hospital discharge. BIA and muscle ultrasound will be conducted every 7 days during ICU stay, then every 14 days until hospital discharge.
NCT06599970
In contrast to the trend expected based on existing prediction models, dengue incidence was historically low during the pandemic mobility restrictions of 2020-2021 in most dengue endemic countries. This highlights that current transmission models do not correctly take human mobility into account. Within a pilot-study in Cienfuegos, South-Central Cuba, we will characterise the epidemiological spread and distribution of dengue outbreaks (2012-2025) in districts repeatedly involved in previous dengue outbreaks as initiating, case-concentrating or transmission sustaining areas. This will be linked with fine-grained mobility data and socio-spatial characterizations of commuting flows and population hubs where people are concentrated during day-time (time when transmission happens). This information, together with entomological and environmental risk-data, will be used to i) improve the accuracy of mathematical dengue models, ii) better understand the transmission process and iii) inform and improve the design of disease control strategies. The project will contribute to much-needed evidence-based guidance for public health actors on improved prevention strategies of epidemics dispersion and where and when to implement control measures.