Active clinical trials for "Diabetes Mellitus"

Patients with type 1 diabetes type 1 (DM1) have increased risk of death due to heart disease and stroke. These cardiovascular conditions (CVD) are the leading cause of death in patients with DM1 younger than 40 years of age and up to 35% of all persons with DM1 will die before age 55 from CVD. Strategies are needed to help identify adolescents with DM1 at risk for CVD so that interventions to prevent heart disease and stroke can be undertaken.

This study is designed to compare the serum sphingolipidomic analyses in healthy, pre-diabetic and diabetic subjects. age, sex and BMI are matched among these three groups. As ceramide, sphingosine, sphingosine-1-phosphate and sphinganine are involved in inflammation, immunity and cancer, investigators proposed a hypothesis that sphingosine-1-phosphate and other sphingolipids may be associated with the progress of type 2 diabetes. sphingolipids may be a biomarker for diabetes.

Retinal function is highly dependent on the glucose supply. Thus, functional adaptations occur in response to both acute and long-term changes in glycaemia. The purpose of this study is to examine functional and metabolic aspects of retinal adaptation to long-lasting changes in glycaemic control in patients with diabetes. The adaptational phenomena will be characterized by electroretinography, dark adaptation, measures of retinal perfusion and oximetry as well as diabetic retinopathy grading and (OCT).

The purpose of this study is to assess the glycemic response to cycling road races (using continuous glucose monitoring ) in elite athletes with type 1 diabetes and non-diabetic controls. The investigators will also assess the relationship between power/work during cycling (using a power meter) and the subject's glucose profile.

In order to evaluate the potential role of the gastrointestinal (GI) tract in the postprandial hyperglucagonemia, which characterizes type 1 diabetes mellitus (T1DM) (as well as type 2 diabetes mellitus (T2DM)), we wish to investigate the secretion of glucagon in patients with T1DM without residual beta-cell function during 50-g oral glucose tolerance test (OGTT) and during isoglycemic iv glucose infusion. By evaluating C-peptide negative patients with T1DM we aim to describe the glucagon response to glucose (+/-stimulation of the GI tract) independently of the potentially very important regulation of glucagon secretion by endogenous insulin secretion. A more detailed understanding of the inappropriate glucagon secretion in T1DM is highly needed in order to establish new intervention strategies in the future treatment of the growing numbers of T1DM patients.

The aim of this study is to to analyze if it is possible to reach the goals of HbA1c <7.0% and blood pressure <= 130/80 mm Hg in a cohort of patients with type 2 diabetes attending a primary care unit, using ony those resources available at the unit, and provided by the Brazilian National Health System. It is an open label, observational study, with a duration of 4-6 years. Patients attending a primary care outpatient facility will be sequentially included in the study provided they give consent. They will be followed on a monthly basis by a team of physicians and nurses. Glucose, A1c, Blood PRessure will be the outcomes.

The study aim is to establish a consecutive population of newly referred type 2 diabetes mellitus patients and among these to describe the degree of macrovascular disease by evaluating left ventricular systolic and diastolic function (echocardiography), myocardial perfusion (single-photon emission computed tomography (SPECT)), the peripheral vascular perfusion (strain gauge toe blood pressure measurements and a ultrasound scan of the a. carotis communis). Further, the degree of microvascular disease will be evaluated (glomerular filtration rate assessment, fundus photography and biotesiometry). Finally the cohort will be followed the next two years to assess the prognostic value of the above-mentioned parameters