Clinical trials: Cell Function
Healthy
VO2 Max: In Vivo Model for Functional Red Cell Testing. Can RECESS be Explained?
This is a single-center, randomized, partially blinded study to determine whether 42-day old red blood cells (RBCs) deliver oxygen as effectively as 7-day old RBCs and also to determine whether transfusion with 28-day old RBCs is…
- Trial name
- NCT02918851
- Testing
- Transfusion of 7-day stored red blood cells, Transfusion of 28-day stored red blood cells, Transfusion of 42-day stored red blood cells
- Where
- United States
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Stony Brook University
Fatty Liver, Insulin Resistance
Insulin Resistance in Non-alcoholic Fatty Liver Disease
The purpose of this study is to determine whether nonalcoholic fatty liver disease (NAFLD) is associated with altered peripheral and hepatic insulin sensitivity and to investigate potential mechanisms underlying insulin…
- Trial name
- NCT00252499
- Testing
- rosiglitazone, fenofibrate
- Where
- United States
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- US Department of Veterans Affairs
Obesity, Type 2 Diabetes
Role of Pancreatic Triglyceride Content in Beta-cell Function
The study evaluates if fat accumulates in the pancreas in individuals at risk of developing obesity-related diabetes. It also evaluates if the amount of fat in the pancreas can predict the residual functional capacity of the…
- Trial name
- NCT00602953
- Testing
- No intervention planned.
- Where
- United States
- Volunteers
- 101 people, healthy volunteers welcome
- Sponsor
- University of Texas Southwestern Medical Center
Glioma
Sedatives' Effects on Neurological Function in Patients With Eloquent Area Glioma
Sedation in the operating room, the Post Anesthesia Care Unit and the Intensive Care Unit is common and often necessary for patients with intracranial brain tumor.
- Trial name
- NCT02439164
- Testing
- Midazolam
- Where
- China
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Beijing Tiantan Hospital
Obesity, Healthy
Effect of Bile Acids on Satiety, Cell Function and Body Weight in Patients With Obesity and Abnormal Satiety Phenotype
The purpose of this research is to study the effect of the study drug (a conjugated bile acid dietary supplement) or placebo on cell function, hormones and body weight.
- Trial name
- NCT05314374
- Testing
- Ileocolonic-release conjugated bile acid
- Where
- United States
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Cardiac Toxicity, Chemotherapeutic Agent Toxicity
Cardiac Magnetic Resonance Imaging in Patients With Non-Hodgkin Lymphoma or Hodgkin Lymphoma Receiving Doxorubicin
RATIONALE: Diagnostic procedures, such as cardiac magnetic resonance imaging, may help doctors detect early changes in the heart caused by chemotherapy.
- Conditions
- Cardiac Toxicity, Chemotherapeutic Agent Toxicity, Lymphoma
- Trial name
- NCT00577798
- Testing
- contrast-enhanced magnetic resonance imaging
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of Nebraska
Type 1 Diabetes
Combination Therapy With Sitagliptin and Lansoprazole to Restore Pancreatic Beta Cell Function in Recent-Onset Type 1 Diabetes
Sanford Research/USD proposes to study the combination therapy of oral administration of sitagliptin and lansoprazole versus placebo for the preservation of pancreatic beta cells still present in patients with recent-onset…
- Trial name
- REPAIR-T1D (NCT01155284)
- Testing
- Sitagliptin and Lansoprazole
- Where
- 3 sites in United States
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Sanford Health
Diabetes Mellitus, Type I, Diabetes Mellitus, Insulin-Dependent, 1
Imatinib Treatment in Recent Onset Type 1 Diabetes Mellitus
Type 1 diabetes mellitus (T1DM) results from the autoimmune destruction of insulin-producing ß cells. Although exogenous insulin is widely available, it is not possible for affected individuals to consistently achieve euglycemia…
- Conditions
- Diabetes Mellitus, Type I, Diabetes Mellitus, Insulin-Dependent, 1, Type 1 Diabetes Mellitus, Insulin-Dependent Diabetes Mellitus 1
- Trial name
- NCT01781975
- Testing
- Imatinib Mesylate
- Where
- 9 sites in United States, Australia
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Mitochondrial Function, Physical Function
Resveratrol to Enhance Vitality and Vigor in Elders
Resveratrol, a compound found in red wine and dark-skinned grapes, will improve the function of mitochondria (energy producing components) within the leg muscles of moderate functioning older adults.
- Trial name
- REVIVE (NCT02123121)
- Testing
- Resveratrol 1000 mg/day, Resveratrol 1500 mg/day, Vegetable cellulose
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University of Florida
Type 2 Diabetes, Healthy
Effect of Pioglitazone and Exenatide on Body Weight and Beta Cell Function
Pioglitazone, a drug used in treatment of type 2 diabetes has been shown to improve insulin sensitivity in skeletal muscle, liver, and fat cells.
- Conditions
- Type 2 Diabetes, Healthy, Impaired Glucose Tolerance
- Trial name
- PIO-EX (NCT00845182)
- Testing
- Pioglitazone, Exenatide, Pioglitazone and Exenatide
- Where
- United States
- Volunteers
- 43 people, healthy volunteers welcome
- Sponsor
- The University of Texas Health Science Center at San Antonio
Healthy, Obesity
Mitochondrial Function in Circulating Cells and Muscle Tissue
The main goal of this project is to determine whether mitochondrial function in circulating cells is related to that measured in the muscle fibers of the same subjects.
- Conditions
- Healthy, Obesity, Insulin Sensitivity, Women
- Trial name
- MitoWomen (NCT02700698)
- Where
- 2 sites in United States
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- University of Arkansas
PCOS
Theca Cell Function in Adolescents With Polycystic Ovary Syndrome (PCOS)
In women with polycystic ovary syndrome (PCOS), the cardinal physiological abnormality is excessive ovarian androgen production marked by increased serum testosterone (T) and androstenedione (A) levels.
- Trial name
- NCT01154192
- Testing
- Dexamethasone, recombinant human chorionic gonadotropin (r-hCG)
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- University of California, San Diego
Healthy
A Study to Evaluate the Effect of Genetic Variation on Beta-cell Function During Fasting and Hyperglycemia in Nondiabetics
The GLP-1 receptor (GLP1R) gene is found on the beta cells of the pancreas. Its role is in the control of blood sugar level by enhancing insulin secretion from the pancreas after eating a meal.
- Trial name
- NCT04466566
- Testing
- Saline, Exendin-9,39, Liraglutide
- Where
- United States
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- Adrian Vella
Healthy
DPP4 Inhibition & Beta Cell Function
This study is being done to determine the role of a hormone, glucagon-like peptide 1 (GLP-1), on insulin secretion and to study how GLP-1 works in in diabetic individuals as compared to non-diabetic individuals, under fasting…
- Trial name
- NCT02683187
- Testing
- Active Comparator: Sitagliptin
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- David D'Alessio, M.D.
Cardiovascular Diseases
Red Blood Cell ATP Release and Vascular Function in Humans
Previous work demonstrates that the red blood cells of older adults do not release a potent vasodilator (ATP) as well as the red blood cells of younger adults.
- Trial name
- NCT03404843
- Testing
- Fasudil Hydrochloride, Saline
- Where
- United States
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- Colorado State University
Insulin Sensitivity
Insulin Sensitivity and Beta Cell Function After Carbohydrate Loading in Hip Replacement Surgery
The purpose of this study is to determine whether preload of carbohydrate or water before elective hip replacement improve insulin sensitivity and or beta cell function in human.
- Trial name
- NCT01774084
- Testing
- Experimental: PreOp, NutriciaNordica AB
- Where
- 2 sites in Sweden
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- Karolinska Institutet
Asthma, COPD
Leukocyte Function in Asthma and COPD
The aim of this study is to examine the inflammatory mechanisms involved in the pathogenesis of inflammatory lung disease, in particular to compare the inflammatory profile seen in asthma and COPD.
- Conditions
- Asthma, COPD, Emphysema, Chronic Bronchitis
- Trial name
- NCT00147069
- Where
- United Kingdom
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Imperial College London
Polycystic Ovary Syndrome
Theca Cell Function in Women With Polycystic Ovary Syndrome (PCOS)
The mechanism for increased androgen production in women with polycystic ovary syndrome (PCOS) is not well understood. Excess androgen production by the ovary is stimulated by increased pituitary luteinizing hormone (LH)…
- Trial name
- NCT00747617
- Testing
- recombinant human chorionic gonadotropin
- Where
- United States
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- University of California, San Diego
Anemia, Sickle Cell
Examining Cognitive Function and Brain Abnormalities in Adults With Sickle Cell Disease
Sickle cell disease (SCD), also known as sickle cell anemia, is an inherited blood disease that can cause intense pain episodes and may lead to organ failure.
- Trial name
- NCT00528801
- Testing
- NP Battery, MRI
- Where
- 12 sites in United States
- Volunteers
- 212 people, healthy volunteers welcome
- Sponsor
- UCSF Benioff Children's Hospital Oakland
Type 2 Diabetes
Study of Vitamin D and Omega-3 Supplementation for Preventing Diabetes
The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is an ongoing randomized clinical trial in 25,875 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids…
- Trial name
- NCT01633177
- Testing
- Vitamin D3, Omega-3 fatty acid (fish oil)
- Where
- United States
- Volunteers
- 22,220 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital