Clinical Research Directory

Evaluation of the Clinical Spectrum of Diabetes and Obesity in Youth and Adults

Background: Diabetes and obesity are chronic diseases. They can affect blood flow and how the body processes nutrients, and complications over time can lead to early death. Diabetes can affect children as well as adults, but the disease seems to be more severe and to progress faster when it appears in younger people. Researchers want to understand more about how diabetes and obesity develop and change over time. Objective: To collect data and samples regularly from people with obesity and diabetes. Eligibility: People aged 8 to 65 years. They must be overweight or obese; or have high blood sugar; or have problems with how their body uses food for energy. Design: Participants will have additional procedures during routine care visits at the NIH clinic. Data collected for the study will include the following: Information from the participant s medical chart will be kept for research. Questionnaires will ask about participant s eating habits, feelings, sleep, and substance use. They will take 30 to 60 minutes. Care providers will address any issues revealed in these surveys. Blood, saliva, urine, and stool samples will be collected. Samples may be used for genetic tests. Data and samples will be kept for future research. Participants may remain in the study up to 30 years.

Environment, Inflammation and Metabolic Diseases Study

The aim is to establish an effective and practical early warning model for endocrine and metabolic diseases based on an environmental-gene-protein panoramic network, to uncover new mechanisms underlying the onset and progression of these diseases, and to screen for novel therapeutic targets.

Campath/Fludarabine/Melphalan Transplant Conditioning for Non-Malignant Diseases

The hypothesis for this study is that a preparative regimen that maximizes host immunosuppression without myeloablation will be well tolerated and sufficient for engraftment of donor hematopoietic cells. It is also to determine major toxicities from these conditioning regimens, within the first 100 days after transplantation.

Deciphering the Effect of Moderate Wine Consumption on Healthy Aging Through Postprandial Extracellular Vesicles.

This study aims to investigate how moderate wine consumption influences circulating extracellular vesicles (EVs) in healthy adults. EVs are small particles released by cells that carry proteins, lipids, and genetic material, and play important roles in communication between cells. Participants will consume a single serving of red or white wine, and blood samples will be collected before and after consumption to study changes in the composition and function of EVs. The study will also assess how these EVs affect vascular, immune, and brain-related cells. The results are expected to improve our understanding of how moderate wine intake contributes to cardiovascular and brain health.

Reduced Intensity Conditioning and Familial HLA-Mismatched BMT for Non-Malignant Disorders

This study is designed to estimate the efficacy and toxicity of familial HLA mismatched bone marrow transplants in patients with non-malignant disease who are less than 21 years of age and could benefit from the procedure.

A Natural History Study of Metabolic Sizing in Health and Disease

Background: Scientists have long used simple measures (such as height and weight) to estimate how much a person s body uses food (calories) as energy, as commonly called the metabolic rate. But metabolism varies among people with similar body sizes. Scientists now believe the old formulas for estimating metabolic rates may not work well for all people. Researchers want to find more accurate ways to measure a person s metabolism. Objective: This natural history study will examine the relationships between metabolism, body composition, and body surface area in a wide range of people. Eligibility: Healthy children and adults aged 2 years or older. Also, people aged 2 years or older with conditions that may alter metabolism. These may include diabetes, obesity, renal disease, or cancer. Design: Participants will spend 2 days and 1 night in the hospital. They will provide a medical history and answer questions about their activity levels, the foods they eat, and their lifestyle. They will also eat a special diet. Participants will undergo many tests: They will lie in a bed with a clear hood covering their head for 30 to 45 minutes to measure the gases in their breath. They will lie on a padded table for about 15 minutes while their body is scanned. They will stand on a platform while a 3D scanner measures their body. They will have a test to measure how fast an electric signal moves through their body. They will grip an instrument to measure the strength of their hands. They will drink salty water and provide blood and urine samples. Participants may be invited to return for these 2-day visits up to 8 times per year. Return visits must be at least 2 weeks apart.

China Atrial Fibrillation With Complex Metabolic Disorder Cohort Study (CAME Cohort)

The number of atrial fibrillation (AF) patients in China is approximately 32.76 million, with a prevalence rate of 2.3%. AF is associated with severe outcomes such as stroke and heart failure. Metabolic disorders (e.g., obesity, diabetes mellitus, dyslipidemia) are closely linked to the onset and prognosis of AF. However, the epidemiological characteristics and disease burden of AF combined with metabolic disorders in China remain unclear. Additionally, the impact of complex multi-dimensional metabolic disorders on AF prognosis requires further investigation, and current clinical guidelines lack targeted management recommendations for this population.

Observational Study for the Characterisation of Patients Affected by Any Type of Diabetes and Endocrine Disorders

The main objective of this retrospective and prospective observational register is to identify anthropometric, clinical, laboratory and/or instrumental markers of disease severity and activity in patients suffering from diabetes, endocrine-metabolic disorders, rare diseases in order to improve their diagnosis, monitoring and treatment processes. The Registry is monocentric, observational prospective and retrospective. No additional procedures to those of normal clinical practice are planned, and neither diagnostic approaches nor experimental drugs/prescriptions will be applied. The data under study (demographic, anthropometric, clinical and care characteristics) will be collected as part of outpatient visits of the Diabetes Outpatient Clinic or admission to Diabetes Day Hospital. In case of outpatients, the observation will start at the diagnosis or during the first outpatient visit and will end with the last outpatient visit performed within the total time foreseen for the duration of the study. The study will start once the regulatory authorizations are completed, and is expected to last at least 10 years with the possibility of extension

Evaluating Metabolic Health in People Aged 18 to 60 by Nutrilite Metabolic Health Index

The goal of this observational study is to evaluate Metabolic Health by fit analysis between calculated Nutrilite Metabolic Health Index and the result of Metabolomics analysis from blood plasma samples in healthy adult participants aged between 18 and 60 years. The main question it aims to answer: \- Does the Nutrilite Metabolic Health Index fit well with the result of Metabolomics analysis from blood plasma samples? 200 eligible participants will be enrolled in a single center, one site visit will be made to finish a health questionnaire, a lifestyle questionnaire, a routine physical checkup. Blood samples will be collected for routine blood test (blood sugar, total triglycerides, total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, uric acid), and for Metabolomics testing. Researchers will calculate the Nutrilite Metabolic Health Index based on participant data, and do the fit analysis against the result from Metabolomics analysis.

Chinese Migrant Population Health Cohort

The Chinese Migrant Population Health Cohort is a prospective, multi-center study jointly initiated by Professor Yong Ji, President of Harbin Medical University, and Academician Guoqiang Chen, President of Hainan Medical University, in collaboration with regional partners. It targets older adults (≥60 years) who engage in seasonal migration between cold (Heilongjiang) and tropical (Hainan) regions. The primary objective is to investigate cardiovascular and metabolic disease risks, underlying biological and environmental mechanisms, and effective preventive strategies in this unique population. Participants are recruited from both origin and destination sites and undergo standardized baseline assessments, including questionnaires, physical examinations, medical imaging, biospecimen collection (blood, stool, hair, nails), and environmental exposure monitoring. Longitudinal follow-up includes periodic reassessments, remote monitoring, and data linkage with hospital information systems to capture health outcomes. The study aims to: Define migration-related health risk profiles and disease phenotypes. Elucidate biological and environmental mechanisms influencing disease onset and progression. Develop AI-driven risk prediction models and evaluate targeted interventions through nested randomized controlled trials. Translate findings into clinical guidelines and scalable cross-regional health management models. This is the first cohort in China to systematically investigate the health impacts of seasonal migration in older adults. By integrating epidemiology, multi-omics, environmental data, and health policy translation, the study seeks to improve continuity of care, strengthen climate adaptation, and promote healthy ageing.

Interactive Roles of Cardiorespiratory Fitness and Adiposity on Glucose and Vascular Control After Physical Inactivity

The far-reaching negative health effects of the reduced physical activity (RPA) epidemic are often overlooked by the general population and health professionals. Short-term RPA induces cardiometabolic dysfunction, including impaired glucose control and vascular function, that may precede disease development. The impact of existing health status on RPA-induced cardiometabolic dysfunction and recovery of impaired glucose control following RPA is unexplored. Thus, the investigators' objectives are 1) to investigate the effect of existing health status (cardiorespiratory fitness and adiposity) on the recovery of impaired glucose control following a period of RPA and 2) to determine the role of vascular function as a mechanism of impaired glucose control. The investigators' final objective is to 3) expose undergraduate students to meritorious biomedical clinical research methods. The investigators have piloted the clinical research methods and analysis with undergraduate researcher associates and are well-prepared to complete this proposal. Preliminary data show that low cardiorespiratory fitness and/or high adiposity impair the recovery of glucose control following short-term RPA. Thus, the investigators aim to examine the interactive role of health status (cardiorespiratory fitness and adiposity) on the ability to recover impaired glucose control following short-term RPA. The investigators also seek to examine changes in vascular function as a mechanism of recovery of impaired glucose control following a return to normal PA. The investigators will recruit men and women with divergent health status (cardiorespiratory fitness and adiposity) to examine glucose control and vascular function during 7-d of normal PA, 7-d of RPA, and 7-d of resumption of normal RA. Continuous glucose monitoring and oral glucose tolerance tests will be performed to assess glucose control. Increases in vascular shear stress induced by passive leg movement and central arterial stiffness will be measured to assess vascular function.

An Optimized Programming of Healthy Children (APPROACH)

The Nutrition Research Unit at Copenhagen University Hospital Herlev will during the fall 2013 initiate a randomized and controlled intervention study engaging 390 obese pregnant women. The overall aim of APPROACH is to investigate how an optimal diet during pregnancy influences the programming of the offspring. The children will after birth be included in a prospective cohort according to maternal randomization and examined six times from delivery until the age of nine years.

Exploring Physical Exercise for the Regulation and Control of Metabolic Disorders in College Students.

This clinical trial objective is to evaluate the effect of an aerobic physical exercise program on reducing triglycerides, blood pressure, abdominal obesity, altered glucose levels, and the increase in HDL in college-level students at the University of Colima. It will try to answer whether aerobic physical exercise reduces metabolic disorders (altered blood pressure and glucose levels, abdominal obesity, and increased HDL). A simple randomized clinical trial will be conducted with a sample of 48 voluntary students from the University of Colima, divided into two groups of 24 people (Control group -A-, will perform aerobic physical exercise, which will be walking at 57% to 76% of HRmax; and Experimental Group -B-, will undergo an aerobic physical exercise (APE) program involving jogging, swimming, and static cycling, with a progressive intensity, which will start at 57%-63% of the maximum heart rate (HRmax) in the first 4 weeks of the study, and will increase to 64% -76% in the final four weeks, fulfilling the principle of progressive overload). Researchers will compare the results of both groups to confirm the effectiveness of the planned aerobic physical exercise in reducing these risks.

Buyuan-zhixiao Formula in the Treatment of Elderly Patients With Diabetes and Multiple Metabolic Disorders

The primary objective of this clinical trial is to assess the clinical efficacy and safety of the Buyuan Zhixiao Formula in treating elderly patients with diabetes and multiple metabolic disorders exhibiting symptoms of renal deficiency and blood stasis. Furthermore, this study aims to intervene in high-risk factors to prevent arteriosclerosis and to investigate the clinical efficacy of the Buyuan Zhixiao Formula in the prevention and treatment of cognitive impairments. The main questions it aims to answer are: 1. What are the clinical effects of Buyuan Zhixiao Formula, including lowering blood sugar, lowering blood pressure, lowering lipids, and treating obesity? 2. Can Buyuan Zhixiao Formula improve cognitive impairment in diabetes? Researchers compared Buyuan Zhixiao Formula with a placebo (a drug that looks similar but contains only 10% of the active ingredients) to see if the drug Buyuan Zhixiao Formula can treat elderly people with diabetes and multiple metabolic disorders. Participants will: 1. Take the drug Bu Yuan Zhi XiaoFormula or placebo every day for 6 months；Follow-up for 6 months； 2. Check fasting blood sugar and 2-hour postprandial blood sugar every month; check HbA1c, blood lipids, vascular function, and cognitive impairment serum markers every 3 months; 3. Conduct scores on TCM symptoms, cognitive ability, nutritional status and other scales and adverse events; 4. Urine and serum samples were collected before and after treatment;