182 Clinical Trials for Various Conditions
Magnetic Resonance Imaging (MRI) unlike X-rays and CT-scans does not use radiation to create a picture. MRI use as the name implies, magnetism to create pictures with excellent anatomical resolution. Functional MRIs are diagnostic tests that allow doctors to not only view anatomy, but physiology and function. It is for these reasons that MRIs are excellent methods for studying the brain. In this study, researchers will use MRI to assess brain anatomy and function in X and Y chromosome variation, healthy volunteers, and patients with a variety of childhood onset psychiatric disorders. The disorders include attention deficit disorder, autism, congenital adrenal hyperplasia, childhood-onset schizophrenia, dyslexia, obsessive compulsive disorder, Sydenham's chorea, and Tourette's syndrome. Results of the MRIs showing the anatomy of the brain and brain function will be compared across age, sex (gender), and diagnostic groups. Correlations between brain and behavioral measures will be examined for normal and clinical populations....
Endocrine disorders like Type 2 diabetes mellitus (T2DM) represent complex cardiometabolic disease processes affecting approximately 462 million individuals worldwide and is associated with a two- to three-fold increase in cardiovascular mortality. Individuals with T2DM are at an increased risk of developing cardiovascular disease. Research has shown individuals with T2DM and no previous history of coronary artery disease are still at similar risk rates for cardiovascular events as patients with a prior myocardial infarction. The MAgenetoCardiography ENDOcrine Registry (MACENDOR) study is designed to collect CardioFlux scans on a select group of volunteers who are high-risk patients with endocrine disorders. CardioFlux is used as a noninvasive magnetocardiography (MCG) tool that analyzes and records the magnetic fields of the heart to screen volunteers for heart disease. There will be a 12-month duration of the study where we propose to collect screening data from approximately 250 volunteers who present to the Genetesis facility for a 5-minute CardioFlux scan. The volunteers will be contacted at intervals over a 1-year period for follow-up data and may choose whether or not they would like to provide follow-up data or participate in another scan.
Background: Endocrine disorders involve changes to glands that produce hormones. Hormones are released by these glands into the blood so they can direct the function of other tissues in the body. Researchers want to study people who may have endocrine disorders. They want to learn more about the conditions that affect endocrine glands. Objective: To study adults with a variety of endocrine disorders for research and physician education. Eligibility: Adults ages 18 and older who have an endocrine or metabolic-related disorder Healthy volunteers 18 and older Design: Participants will be screened with a review of their medical records. Participants will have a physical exam and medical history. The length of the study and the schedule will vary by participant. Tests may include: Blood and urine tests Stool and saliva samples Imaging studies: Participants will lie on a table while a machine takes pictures of the body. They may be injected with a substance to make their organs more visible in the pictures. Tests of endocrine tissue function Consultation with other specialists Sleep study Medical photographs Participants may be treated for their endocrine disorder. This could include: Surgery. If tissue is removed during surgery, it may be studied. Radiation Medicine Participants may have genetic testing. This will be done with a small amount of blood, cells from a cheek swab, or saliva. Sponsoring Institution: National Institute of Digestive, Diabetes and Kidney Disease ...
The goal of this data review study is to collect data to learn more about thyroid, parathyroid, and adrenal disease.
Background: There are many endocrine and metabolic-related conditions. Two well-known disorders include diabetes and thyroid disease. Some of these diseases are caused by a change in genes. Researchers want to identify the genes involved in these disorders. They hope this will help them learn more about these diseases. Objectives: To learn more about conditions that affect the hormone-secreting glands (endocrine glands) in adults. To train doctors to diagnose and treat people with endocrine or metabolic conditions. Eligibility: Adults age 18 years and older with a known or suspected endocrine disorder. Relatives ages 18 years and older. Doctors will review all requests and available medical records to determine final eligibility for the protocol. Design: Participants will have a medical history and physical exam. Most participants will have 1 visit, and may have follow up visits if necessary. They may have tests, surgery, or other procedures to help diagnose or treat their condition. These could include: * Blood, urine, and saliva tests * Imaging tests. These may include X-ray, ultrasound, or scans. * Sleep study * Medical photographs * Visits with other specialists at NIH Participants will provide blood, urine, saliva, or tissue samples. Some of these samples may be stored in the freezer for future studies. Participants may be asked to participate in genetic testing. They will give a blood or saliva sample for this.
The purpose of this study is to collect a portion of blood/tissue specimens that will be generated during the participants office visit or surgery. The investigators are asking whether a small portion of the specimen/s could be set aside and banked for future research purposes. Data originating from participants will be gathered and analyzed in research studies that will help understanding various medical conditions such as polycystic ovary syndrome (PCOS), congenital uterine malformations, endocrine malfunctions, endometriosis, and infertility.
The purpose of this study is to assess the results of ovarian tissue freezing, such as resumption or initiation of menses (menstruation: the discharge of blood and tissue from the uterus that happens about every 4 weeks in females who are not pregnant) and pregnancy, prior to starting chemotherapy or radiation treatment (commonly used for cancer treatment or for other conditions such as multiple sclerosis, psoriasis, rheumatoid arthritis). Females who are about to undergo chemotherapy or radiation therapy for cancer or these other medical conditions may stop having menses and may not be able to produce a biological child. Girls who have not achieved puberty and are exposed to chemotherapy (alkylating agents) or radiation treatment, the risk is up to 22-50%. In contrast, girls older than 10 years, or who have achieved puberty, experience acute ovarian failure in over 50% of the cases. By freezing and preserving ovarian tissue will help prevent these outcomes. In fact, when you are considered cured of your disease, you will have another surgical procedure where your own ovarian tissue will be transplanted back to you. This surgery will increase the possibility of resuming/initiating menses and the chance to have a pregnancy.
The purpose of this study is to collect data that will be generated during an office visit. The data will be gathered and analyzed in research studies that will help with the investigators understanding of various medical conditions. About 200 subjects will be participating in this study. Participation in this study will not require a patient's time or presence. The medical information contained in a patient's chart from the office visit, including the results of any tests that were ordered at that time, will be transferred to an anonymous database and analyzed together with data from other patients who have similar condition/s. No follow-up information will be collected. The following information will be collected from a patient's medical record: the medical history and a list of the current medications.
Cortisol is a hormone critical for survival in times of stress. Currently most measurements are done with blood samples. The hypothesis of this study is cortisol measured from saliva using mass spectrometry can be used to replace measurements by blood.
To assess the effects of AZD4901 when given in multiple doses to females with Polycystic Ovary Syndrome
The purpose of this study is to gather safety and effectiveness information about a new formulation of Hydrocortisone (Chronocort®) used to treat patients with a disease called congenital adrenal hyperplasia (CAH). Hydrocortisone is the man-made version of the hormone cortisol, which is released in the body following a regular daily pattern. The objective of the study is to measure the levels of hydrocortisone that are absorbed into the bloodstream once Chronocort® is taken and what affects it has on other hormones in the body. Since Chronocort® is anticipated to mimic the same release pattern of cortisol in the body, it is hoped that patients with CAH will be treated more effectively to manage their disease.
Background: - The body produces gonadotropin-releasing hormone (GnRH) about every 2 hours. GnRH travels through the bloodstream to the pituitary gland, where it stimulates the gland to produce hormones called gonadotropins. These hormones stimulate the testicles or ovaries. The testicles produce testosterone and develop sperm. The ovaries produce estrogen and prepare for ovulation. Normal estrogen and testosterone levels are required for puberty. Some people, however, have either low levels or total lack of GnRH. This can cause problems with puberty and fertility. Researchers want to study people with low or no GnRH to better understand how it affects puberty and fertility. Objectives: - To study disorders of GnRH production. Eligibility: * Adult men and women at least 18 years of age with low or no gonadotropin levels. * Adolescents between 14 and 18 years of age with low or no gonadotropin levels. Design: * Participants will be screened with a physical exam and medical history. Blood and urine samples will be collected. * Participants will have tests to look at their hormone levels. Blood samples may be collected after taking different drugs, including insulin and cortisone. A 24-hour urine sample will be collected. * Participants will have imaging studies to look at bone and brain development. They will also have ultrasounds of the kidneys, abdomen, and reproductive organs. * Tests of smell and hearing will be used to look for abnormalities in these senses.
Background: * Metabolic syndrome is a name given to a group of factors that tend to occur together. These risk factors include central obesity (extra weight around the middle of the body) and high blood pressure and blood sugar levels. They also include low levels of HDL ("good cholesterol") and high triglyceride levels. A person is said to have metabolic syndrome if they have three or more of the above risk factors. People with metabolic syndrome are at increased risk for type 2 diabetes, stroke, and heart disease. * Cortisol, a hormone produced by the adrenal glands, is an important regulator of metabolism. People with central obesity and metabolic syndrome may have higher than normal cortisol levels that the body cannot regulate properly. Abnormal cortisol levels may play an important role in metabolic syndrome. Mifepristone is a drug that blocks cortisol. Researchers are interested in studying its effects on metabolic syndrome. Objectives: - To study the effects of short-term mifepristone treatment for metabolic syndrome. Eligibility: - Men and Women between 35 and 70 years of age are overweight or obese, and have abnormal glucose and triglyceride levels. Design: * Participants will be screened with a physical exam and medical history. They will also have blood and urine tests. * Participants will be admitted to the metabolic unit at the National Institutes of Health Clinical Center for the first 3 days of the study: * Day 1: Body measurements (height, weight, waist, hip, and neck) and blood pressure tests. Also, 24 hours of regular blood draws and 24-hour urine collection to monitor regular daily cortisol levels. * Day 2: Glucose/insulin infusion test to measure blood sugar levels. * Day 3: Infusion of cortisol-like compounds and then regular blood draws for about 3 hours to evaluate how cortisol is metabolized. * At the end of Day 3, participants will receive mifepristone or a look-alike capsule to take for 7 days at home. * After 7 days, participants will return to the metabolic unit to repeat the Day 1 and Day 2 study procedures. They will continue to take mifepristone. * One week after the second set of study tests, participants will return for a brief physical exam and blood tests. * The study procedures will be repeated after 6 to 8 weeks, with the other study drug.
Objective 1: To assess environmental exposure to chemicals/toxins, including phthalates, among rural and urban Mexican American men and women (n=300), aged 18 to 40, in urban Baytown, TX and rural Rio Grande Valley (Hidalgo County) communities along the Texas-Mexico border region via survey. Objective 2: To determine generational sex ratio trends in urban Baytown, TX and along the rural Rio Grande Valley (Hidalgo County) utilizing vital statistics data from the Texas Department of Health and the Center for Health Statistics. Objective 3: To measure urinary phthalate levels and self-reported phthalate exposure in Mexican American men and women from urban Baytown, Texas and rural communities along the lower Rio Grande Valley (Hidalgo County) on theTexas-Mexico border. To conduct an optional procedure, chromosomal sex determination, among a subgroup of 50 persons (13 men + 12 women in each community) from participants who complete the survey in Objective 1.
This study will evaluate healthy normal volunteers and patients with a variety of endocrine disorders to 1) learn more about conditions that affect the endocrine glands (glands that secrete hormones) and 2) train physicians in endocrinology. Patients with endocrine-related conditions and healthy volunteers of all ages may be eligible for this study. All participants will have a physical examination medical and history. They may be required to provide blood, saliva or urine samples and undergo ultrasound (using sound waves) or magnetic resonance (using a magnetic field) imaging to visualize internal body structures. Some healthy adult volunteers will have hormone-stimulating tests to assess endocrine function. These tests measure blood hormone levels before and after injection of a synthetic form of a hormone. A device called a heparin lock, through which the hormone is injected and the blood samples are collected, is placed in a vein in the arm or hand. Blood samples are drawn before the hormone is injected and at various intervals after the injection to measure levels of the hormone. These tests, which last from 1 to 3 hours, may include the following: 1. CRH stimulation test corticotropin-releasing hormone is given to test pituitary and adrenal gland function 2. ACTH stimulation test adrenocorticotrophic hormone is given to test adrenal gland function 3. LHRH stimulation test luteinizing hormone-releasing hormone is given to test pituitary gland function 4. TRH stimulation test thyroid-releasing hormone is given to test pituitary and thyroid gland function 5. GHRH stimulation test growth hormone releasing hormone is given to measure growth hormone levels. An oral glucose tolerance test, which is similar to the stimulation tests, may also be done to measure blood glucose (sugar) and insulin levels after drinking a sugary liquid. Healthy volunteers and patients with a hereditary endocrine disorder and their family members may also be asked to provide a blood sample for genetic studies of inherited endocrine disorders. Patients with endocrine-related disorders may be offered medical or surgical treatment for their disorder. AcAccess http://turners.nichd.nih.gov/ for additional study publications.
This study was designed to allow inpatient and outpatient evaluation of women with a variety of reproductive and endocrine-related disorders for purposes of research and physician education. The evaluations may include ultrasound examinations, blood, saliva, and/or urine samples. In some cases, specific laboratory or X-ray studies will be performed to confirm the diagnosis or assist in the treatment of the patient. These additional tests will be conducted within the guidelines of current gynecologic practice. In some cases, the patient will receive medical or surgical treatment for their disorder. The purpose of this study is to provide an opportunity for physicians to evaluate women with medical conditions of reproduction. These evaluations and treatments will support clinical training and research for the accredited training program in reproductive endocrinology at the National Institute of Child Health and Human Development (NICHD).\<TAB\>
Background: Gynecologic conditions are those that are related to the reproductive system. They can be reproductive gland disorders or reproductive system tumors. They can also be inborn anomalies of the reproductive tract. Researchers want to gather data over time from a large group of young people with these conditions. Objective: To create a database about child and teenage gynecologic conditions. Eligibility: Participants of any age with known or suspected pediatric and adolescent gynecologic conditions, and their adult family members Design: Participants will be screened with a review of their medical records. Participants may have a medical history and physical exam. Participants will have blood drawn using a needle. The blood will be used for genetic tests. Participants will have saliva collected. They will spit into a small plastic container. Or their spit will be absorbed from their mouth using a small sponge. The saliva will be used for genetic tests. Participants may have samples collected from their vagina. A small cotton swab will be used to gather the samples. This procedure is optional. If participants have a surgery related to their condition, a small tissue sample will be taken. It will be stored for future research. Participants may complete optional surveys. These surveys ask about their physical and emotional health. They can choose not to answer any of the questions. Researchers will collect medical data from participants standard tests. Such tests may include blood and urine tests, X-rays, nuclear medicine scans, and other tests. Data will also be collected from standard treatments they may receive.
Background: Endocrine glands give off hormones. Researchers want to learn more about the disorders that affect these glands in children. These disorders might be caused by changes in genes. Genes contain DNA, which is the blueprint of how a cell works. Researchers want to identify the genes involved in endocrine and metabolic disorders. This might help develop new ways to diagnose and treat the disorders. Objective: To study the inheritance of endocrine or metabolism disorders. Eligibility: Children ages 3month-18 with known or suspected endocrine or metabolism disorders. Family members ages 3months-100. They may participate in the DNA part of the study. Design: Participants will be screened with a review of their medical records. Their parents or guardians will allow the records to be released. Participants will have a clinic visit. This may include a physical exam and medical history. Parents or guardians will give their consent for the study. Participants may have tests, surgery, or other procedures to help diagnose or treat their condition. These could include: Blood, urine, and saliva tests Growth hormone test Pituitary and adrenal function tests Picture of chromosomes Imaging tests. These may include X-ray, ultrasound, scans, or a skeletal survey. Genetic tests Sleep study Medical photographs If surgery is done, a tissue sample will be taken. Participants may have follow-up visits for diagnosis and treatment. Participating relatives will have one visit. This will include medical history and blood and saliva tests. The blood and saliva will be used for DNA testing.
The goal of this study is to develop better methods of diagnosis, localization, and treatment for pheochromocytomas. These tumors, which usually arise from the adrenal glands, are often difficult to detect with current methods. Pheochromocytomas release chemicals called catecholamines, causing high blood pressure. Undetected, the tumors can lead to severe medical consequences, including stroke, heart attack and sudden death, in situations that would normally pose little or no risk, such as surgery, general anesthesia or childbirth. Patients with pheochromocytoma may be eligible for this study. Candidates will be screened with a medical history and physical examination, electrocardiogram, and blood and urine tests. Study participants will undergo blood, urine, and imaging tests, described below, to detect pheochromocytoma. If a tumor is found, the patient will be offered surgery. If surgery is not feasible (for example, if there are multiple tumors that cannot be removed), evaluations will continue in follow-up visits. If the tumor cannot be found, the patient will be offered medical treatment and efforts to detect the tumor will continue. Main diagnostic and research tests may include the following: 1. Blood tests - mainly measurements of plasma or urine catecholamines and metanephrines as well as methoxytyramine. If necessary the clonidine suppression test can be carried out. 2. Standard imaging tests - Non-investigational imaging tests include computed tomography (CT), magnetic resonance imaging (MRI), sonography, and 123I-MIBG scintigraphy and FDG (positron emission tomography) PET/CT. These scans may be done before and/or after surgical removal of pheochromocytoma. 3. Research PET scanning is done using an injection of radioactive compounds. Patients may undergo 18F-FDOPA, 18F-DA, as well as 68Ga-DOTATATE PET/CT . Each scan takes up to about 2 hours. 4. Genetic testing - A small blood sample is collected for DNA analysis and other analyses.
Cushing Syndrome is an endocrine disorder causing an over production of the hormone cortisol. Cortisol is produced in the adrenal gland as a response to the production of corticotropin (ACTH) in the pituitary gland. Between 10% and 20% of patients with hypercortisolism (Cushing Syndrome) have ectopic production of the hormone ACTH. Meaning, the hormone is not being released from the normal site, the pituitary gland. In many cases the ectopic ACTH is being produced by a tumor of the lung, thymus, or pancreas. However, in approximately 50% of these patients the source of the ACTH cannot be found even with the use of extensive imaging studies such as computed tomography (CT) scans, magnetic resonance imaging (MRI), and nuclear scans (111-indium pentetreotide). The ability of these tests to locate the source of the hormone production is dependent on the changes of anatomy and / or the dose and adequate uptake of the radioactive agent. The inability to detect the source of ectopic ACTH production often results in unnecessary pituitary surgery or irradiation. Unlike the previously described tests, positron emission tomography (PET scan) has the ability to detect pathologic tissue based on physiologic and biochemical processes within the abnormal tissue. This study will test whether fluorine-18-fluorodeoxyglucose (FDG), fluorine-18-dihydroxyphenylalanine (F-DOPA) or use of a higher dose of 111-indium pentetreotide can be used to successfully localize the source of ectopic ACTH production.
This is a pilot study. The goal of this prospective cohort study is to determine impact of pharmacist-led continuous glucose monitoring on glycemic control and health behavior change in people with type 2 diabetes. The main questions it aims to answer are: 1. to assess change in hemoglobin A1c in people with type 2 diabetes using continuous glucose monitoring under a pharmacist-led approach as compared to a pharmacist-led approach utilizing no continuous glucose monitoring (only self-monitoring blood glucose with a glucometer). 2. to assess change in continuous glucose monitoring-derived glycemic outcomes among the pharmacist-led continuous glucose monitoring cohort (intervention group) 3. to assess change in health behavior among the pharmacist-led continuous glucose monitoring cohort (intervention group)
OBJECTIVES: I. Compare whether the bone tissue in the spine and hip improves in patients with adult onset growth hormone deficiency treated with growth hormone (GH) vs placebo. II. Determine whether the blood samples of these patients show evidence of beneficial bone effects after treatment with GH. III. Compare the quality of life of these patients treated with these 2 regimens. IV. Determine the side effects of GH in these patients.
RATIONALE: Very low birth weight infants have problems maintaining normal blood sugar levels. Gluconeogenesis is the production of sugar from amino acids and fats. The best combination of amino acids, fat, and sugar to help very low birth weigh infants maintain normal blood sugar levels is not yet known. PURPOSE: Clinical trial to study how very low birth weight infants break down amino acids, fat, and sugar given by intravenous infusion, and the effect of different combinations of nutrients on the infants' ability to maintain normal blood sugar levels.
OBJECTIVES: I. Determine if mutations in the gene encoding the insulin-like growth factor-I receptor lead to relative insulin-like growth factor-I insensitivity and produce intrauterine growth retardation in children.
OBJECTIVES: I. Determine whether reduction of serum insulin levels by metformin increases ovulatory response to clomiphene citrate in women with polycystic ovary syndrome.
OBJECTIVES: I. Compare growth hormone (GH) levels at baseline and after glucose suppression measured with both a polyclonal radioimmunoassay and a highly sensitive immunoradiometric assay (IRMA) in patients with acromegaly and normal volunteers. II. Measure the levels of IGF-I and its binding protein, IGFBP-3, in these cohorts. III. Determine any correlation between levels of IGF-I and IGFBP-3 and GH suppressibility as assessed by sensitive IRMA. IV. Determine if patients who demonstrate biochemical features of mild GH excess are at risk for progression to active disease.
OBJECTIVES: I. Evaluate the effects of 20 Gy of external-beam radiotherapy to 1 orbit vs. the untreated orbit at 3 and 6 months after therapy in patients with Graves' ophthalmopathy. II. Evaluate whether 20 Gy of external-beam radiotherapy delivered to the second orbit 6 months later in the course of the disease produces effects of equal magnitude to those observed when the first orbit was treated. III. Relate the magnitude of treatment effects to the time since onset of eye symptoms. IV. Evaluate whether characteristics of radiation retinopathy are present 3 years after orbital radiotherapy.
OBJECTIVES: I. Identify the genetic defect and fine map the gene that causes sitosterolemia.
RATIONALE: Hypogonadotropism is an abnormal condition caused by decreased production of gonadotropins, a group of hormones that stimulate the parts of the reproductive system that produce and release eggs from the ovaries or sperm from the testicles. Leuprolide may stimulate the production of gonadotropins and be effective in increasing testosterone in men and inducing ovulation in women. PURPOSE: Clinical trial to study the effectiveness of leuprolide in treating adults who have hypogonadotropism.
RATIONALE: The body's response to one injection of leuprolide may provide more information than the standard test for gonadotropin deficiency in determining whether the cause of gonadotropin deficiency is related to the hypothalamus or the pituitary gland. PURPOSE: Randomized double-blinded clinical trial to study the effectiveness of leuprolide in determining the cause of gonadotropin deficiency.