Study of PTPN22 C1858T Polymorphism in Children and Adolescents of Greek Origin With T1DM
Type 1 Diabetes MellitusThe protein tyrosine phosphatase non-receptor type 22 (PTPN22) gene encodes a lymphoid-specific phosphatase (LYP) which is an important downregulatory factor of T cell activation. A PTPN22 polymorphism, C1858T, was found associated with T1DM in different Caucasian populations. In this observational case-control study, we aimed at confirming the role of PTPN22, C1858T polymorphism in T1DM predisposition in a Greek population.
Evaluation of Safety and Parameters of Application Technique
DiabetesDiabetes Mellitus4 moreThis study is conducted in Europe. The aim of the study is to monitor patients changing therapy from syringe to insulin delivery system as prescribed by the treating physician in Slovakia.
Observational Study to Evaluate the Safety of Levemir® in Diabetes
DiabetesDiabetes Mellitus3 moreThis study is conducted in Africa, Asia, Europe, Japan and South America. The aim of this observational study is to evaluate the incidence of serious adverse reactions (SARs) while using Levemir® (insulin detemir) under normal clinical practice conditions. Study conducted globally in 26 countries. Some countries participated in the study for only 3 months (Austria, Brazil, Denmark, Germany, Israel, Lebanon, Slovenia, Russia, and Turkey), while others extended their participation to 6 (Belgium/Luxembourg, Czech Republic, Greece, India, Italy, Netherlands, Saudi Arabia, South Africa, South Korea, Sweden, Tunisia, and United Kingdom/Ireland) and 12 months (Finland, France, and Japan), respectively.
Prospective Study of the Impact of Insulin Pump Therapy in Young Children With Type 1 Diabetes
Type 1 DiabetesThe purpose of the study is to examine glycemic and neuropsychological outcomes in very young children with Type I diabetes who are being started on insulin pumps and to compare their outcomes to children who are not utilizing insulin pumps. We propose to assess 40 children with IDDM under 5 years of age. 10 patients examined will be using multiple daily injections with basal glargine, 10 will be using NPH or Lente and rapid-acting insulin, and 20 will be examined prior to and 12 months after the implementation of insulin pump therapy. These subjects will be recruited and followed because they are currently undergoing treatment for Type 1 diabetes. Children will be recruited based upon the insulin regimen that they and their primary diabetes physician have chosen to utilize clinically. Insulin regimens will not be changed by the study team. Outcome measures will examine: glycemic outcomes (overall control, blood sugar variability), cognitive outcomes, parenting Stress, and changes in diet.
PET-CT Scan Method to Monitor Pancreatic B-Cell Loss in Diabetes Mellitus
Type1 Diabetes MellitusThe pancreas is an organ that plays major roles in the digestion of food. A part of the pancreas called islet beta-cells produces insulin, which regulates the amount of glucose (a sugar) present in the blood at all times. Type-1 Diabetes Mellitus (T1DM), an autoimmune disorder characterized by destruction of pancreatic islet beta-cells (the cells that produce insulin), affects at least a million individuals in the US alone. In T1DM, a type of white blood cells called T lymphocytes attacks and destroys the pancreatic islet beta-cells, leading to a loss of insulin, an increase in blood glucose, and a dependence on insulin injections for survival. Despite rigorous control of blood sugar, the majority of diabetic patients develop serious complications including retinopathy, nephropathy, neuropathy, microangiopathy and strokes. Non-invasive methods to monitor pancreatic beta-cell loss associated with type-1 diabetes mellitus (T1DM) could improve early diagnosis, provide tools to measure responsiveness to new therapies, and evaluate the efficiency of pancreatic transplantation and graft survival. Our goal is to develop a non-invasive PET-CT imaging method based on binding of a molecule (18F-fallypride) for tracking beta-cell loss during the progression of T1DM. In preliminary studies we demonstrated specific binding of 18F-fallypride to D2 receptors in rat pancreatic sections and we demonstrated that the loss of pancreatic beta cells in streptozotocin-treated rats was associated with a corresponding decrease in 18F-fallypride binding to pancreatic sections. A preliminary 18F-fallypride PET-CT study done by a collaborator in Ohio on a healthy volunteer, revealed 18F-fallypride-uptake by the pancreas that was distinguishable from surrounding tissues. Aim-1 of our project will measure the variability of 18F-fallypride PET-scanning of the pancreas in six healthy volunteers scanned twice with an interval of 4-6 weeks. In Aim-2 of our project, we will compare fallypride PET-CT scans of 12 patients with long-standing T1DM (nearly all beta cells destroyed) with 12 age- and sex-matched healthy volunteers. If we are able to distinguish between the two groups, we will in future (a) optimize the method so as to be able to detect a 20-30% loss of beta cells, and (b) perform PET-CT studies in new-onset T1DM patients and in at-risk first degree relatives of T1DM patients.
Support Group Surveys for Individuals Who Have Type 1 Diabetes and an Eating Disorder
Eating DisorderType 1 DiabetesWe propose to conduct a monthly group of persons with type 1 diabetes who also withhold insulin. Subjects will be asked to complete a 2-page survey (check-in sheet) at the beginning of each session and a 5-page survey (Diabetes and Eating Disorders Survey) on their first session and at their last session of their group.
Vascular Inflammation in Adolescents With Type 1 Diabetes
Type 1 Diabetes MellitusCoronary Artery DiseaseThe purpose of this study is to find out if diabetes damages the blood vessels of adolescents with good diabetes control compared to adolescents with less optimal control.
Closed Loop Insulin Therapy in Type 1 Diabetics Based on Blood Microdialysis, Online Sensors and...
Type 1 DiabetesThe EU funded project CLINICIP (Closed Loop Insulin Infusion for Critically Ill Patients) aims to develop a low-risk monitoring and control device which allows maintaining metabolic control in intensive care units. A system will be developed comprising three subsystems: a body interface for the delivery of biofluids, biosensors for the determination of glucose concentration in these biofluids and an adaptive control algorithm that generates advice and thus represents a decision support system with respect to insulin infusion rate to establish glycaemic control in critically ill patients. Within a closed loop system, intensified insulin treatment will make use of the calculations leading to external regulation of glucose. It is the aim of this study to evaluate the feasibility to establish glycaemic control in type 1 diabetic subjects over a period of 30 hours by manually combining these three - previously tested - subsystems (ABS System, extracorporeal online glucose sensor and a laptop-based computer algorithm).
Desensitization for Highly Sensitized Recipients of Pancreas Transplantation
Type 1 DiabetesRejection of Pancreas Transplant1 moreThis is an observational study for patients with type 1 diabetes, whom are already scheduled to have desensitization treatment to help increase the chance of receiving a pancreas transplant.The study staff will be looking at medical records in order to collect past, present and future information for each subject's medical condition and/or transplant. There are no additional study tests, procedures or devices needed for our analysis.
Retinal Function in Diabetic Patients Without Retinopathy
Diabetes MellitusType 12 moreThe primary purpose was to assess, in diabetic patients without diabetic retinopathy and control subjects, color vision, contrast sensitivity, electroretinography, and flicker-induced vasodilatation using the Dynamic Vessel Analyzer, in order to specify the earliest impaired retinal cells in diabetes, and gain more insight into diabetic retinopathy pathogenesis.