Active clinical trials for "Diabetes Mellitus"

Persistent organic pollutants (POPs) are a class of organic pollutants in the environment characterized by persistent, bioaccumulation, long-range transport and biological toxicity. Due to its widespread distribution in the environment and Lipophilicity, POPs can bioaccumulate along the food chain and eventually accumulate in the human body. There are many types of POPs, including dioxins, polychlorinated biphenyls (PCBs) , polybrominated diphenyl ethers (PBDEs) and organochlorine pesticides (OCPs) . POPs is ubiquitous and Lipophilic in the environment, so the potential harm of POPs to human body has aroused wide concern. A growing number of studies have found that exposure to POPs may be associated with an increased risk of endocrine disease, particularly type 2 diabetes and thyroid cancer. The aim of this study was to assess the effect of Persistent organic pollutant exposure on the development ofType 2 diabetes and thyroid cancer by analyzing serum Persistent organic pollutant concentrations in controls, and patients with Type 2 diabetes and thyroid cancer.

THE GOALS of the STUDY are: (1) Determine if this novel continuous glucose monitoring (CGM) - multiple daily injection (MDI) port functions for 7 days in persons with Type 2 diabetes (T2D); (2) Measure the duration of glucose measurement errors that result from injecting liquid into the tissue. It is believed that these errors will be small and will not exceed 15-20 min in duration; (3) Determine how safe this device is; (4) In a survey given to subjects and other subjects after the study, to assess satisfaction and convenience vs standard MDI; (5) Assess accuracy of the glucose sensor; and (6) Compare how well subjects' glucose is controlled with the new device compared to the comparison (control) period in which subjects use standard MDI, during which the injections will be far away from the CGM.

Activation of brown adipose tissue (BAT) by cold exposure. BAT thermogenesis and BAT volume of metabolic activity will be assessed by Positron-Emitting-Tomography (PET/CT) and MRI/MRS imaging and new pharmacological methods to modulate BAT thermogenesis. All previous data on the functioning of Brown Adipose Tissue (BAT) were obtained by Positron-Emitting-Tomography (PET) imaging studies using fluorodeoxyglucose F18 ( [18F]- FDG). This approach underestimates the actual activity of the BAT. In this study, the investigator is going to use a new PET tracer (C11-palmitate) which is a fat molecule. This will allow to quantify more accurately the activity of brown fat.

Type 1 diabetes (T1D) results from an autoimmune destruction of the insulin-producing beta cells. The process of autoimmune destruction is identified by circulating islet autoantibodies to beta cell antigens, and is mediated by a lack of immunological self-tolerance. Self-tolerance is achieved by T cell exposure to antigen in the thymus or periphery in a manner that deletes autoreactive effector T cells or induces regulatory T cells. Immunological tolerance can be achieved by administration of antigen under appropriate conditions. Evidence is now emerging in humans that these approaches may be effective in chronic inflammatory diseases such as multiple sclerosis and allergy. Administration of oral insulin in multiple islet autoantibody-positive children offers the potential for inducing immunological tolerance to beta cells and thereby protect against further development progression to type 1 diabetes.

Background: - Family and twin studies have suggested that genetic factors influence approximately 50 percent of a person's susceptibility to type 2 diabetes. Recently, some of the genes involved in the development of type 2 diabetes have been identified, in large part by genome-wide association studies. Certain risk factors for type 2 diabetes, such as obesity and insulin resistance, are highly inheritable, as are diabetic complications such as diabetes-related eye and kidney disorders. However, few genes associated or linked with diabetes risk factors or complications have been conclusively identified, and more research is needed to study specific genetic factors associated with these aspects of diabetes. Objectives: - To identify and characterize genetic variants associated with type 2 diabetes, its risk factors, and its complications. Eligibility: - Individuals at least 18 years of age who are not pregnant or nursing mothers at the start of the study. Design: All participants will provide information about family history, ethnicity and ethnic background, occupation, behavioral risk factors, and other data as requested by the researchers. In addition to a general health history, participants will provide specific information about diabetes history, with particular emphasis on date of diagnosis, symptoms, initiation of insulin therapy, complications, and current medications. Testing procedures will be different for individuals with and without diabetes. Those without diabetes will have an oral glucose tolerance test, while those with diabetes will be examined for diabetic complications. Other tests during the study will include the following: Physical examination with measurements of height and weight, waist circumference, blood pressure, and other tests for individuals who have been diagnosed with diabetes Glucose tolerance test for those who have not been classified as having diabetes Retinal photographs Electrocardiograms Hepatic Ultrasound Blood and urine tests Depending on the results of the examination and laboratory findings, participants may be asked to return to the clinic for supplemental interviews, physical examinations, or blood tests, or to arrange referrals for medical evaluation and treatment. Participants who have diabetes will be asked to return for yearly follow-up visits. Participants who do not have diabetes at the initial examination will be asked to return for follow-up visits every 2 years.

The Family Investigation of Nephropathy and Diabetes (FIND) is a multicenter study designed to identify genetic determinants of diabetic kidney disease. FIND will be conducted in eleven centers and in many ethnic groups throughout the United States. Two different strategies will be used to localize genes predisposing to kidney disease: a family-based genetic linkage study and a case-control study that utilizes admixture linkage disequilibrium. The center based at the Phoenix office of the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK-Phoenix) will conduct family-based linkage studies among American Indian populations in the southwestern United States. Participants (index cases) with diabetes and kidney disease will initially be recruited, and their parents and siblings will also be invited to participate. Genetic material from these participants will be used to genotype markers throughout the genome. Linkage analysis will be conducted to identify particular chromosomal regions containing genes that influence susceptibility to diabetic kidney disease. Linkage analyses will also be used to identify genes influencing traits related to diabetic kidney disease, such as serum creatinine, urinary protein excretion, plasma glucose levels, blood pressure and blood lipid levels. Regions that show evidence for linkage will then be examined in more detail, with both genetic linkage and association studies, to attempt to identify the specific genes that influence diabetic kidney disease, or related traits. The identification of genes that influence susceptibility to diabetic kidney disease will lead to a better understanding of how kidney disease develops. In the long run, this may lead to improved treatment and prevention of diabetic kidney disease....

The purpose of this study is to evaluate the safety, tolerability and drug levels of a 3-month exenatide implant (NPM-119) for the treatment of type 2 diabetes

Adolescents with type 1 diabetes (T1D) experience more disturbed sleep compared to their healthy peers, especially because they tend to spend less time in deep sleep, the most restoring part of sleep, potentially impacting diabetes management. Disturbed sleep may adversely affect diabetes management which requires day-to-day decision-making, emotional and behavioural regulation, attention, and planning. Despite a massive increase in new technology, more than 50% of adolescents do not reach their glycaemic target. Lack of sleep impairing diabetes management including blood glucose monitoring may play an important role in reaching the goal. For approximately 4000 children and adolescents in Denmark living with T1D, sleep disturbances may therefore account for short and long-term diabetes complications. Our overall aims are to investigate: (1) If and how glycaemic variability (GV) influences sleep quality and sleep stages and (2) if and how poor sleep quality influences time-in-range (TIR), time-above-range (TAR) and time-below-range (TBR) the following day.

The present observational cross-sectional study is aimed to assess: the hidden hypercortisolism (HidHyCo) prevalence in a sample of Type 2 diabetes (T2D) patients and the clinical characteristics more frequently associated with the HidHyCo presence and the HidHyCo prevalence in an adequate sample of obese patients without T2D and the clinical characteristics more frequently associated with the HidHyCo presence.

Fasting in Ramadan is not recommended for people with type 1 diabetes. The main risk associated with fasting is dysglycemia (hypoglycemia, hyperglycemia, diabetic ketosis) and dehydration. Nevertheless, whether or not to practice Ramadan remains a personal choice and many people living with diabetes choose to perform this fast with or without their physician's approval. The purpose of this prospective observational study is to evaluate the safety and efficacy of an closed-loop hybrid insulin system on glycemic parameters and the level of hypoglycemia in patients with type 1 diabetes who wished to fast during Ramadan.