Active clinical trials for "Diabetes Mellitus, Type 1"

This is an observational mono-centric retrospective study carried out at the University Hospital of Brest The main objective of this study is to assess the glycemic control before, during and after the 2016 Paris Marathon in patients with type 1 diabetes using continuous glucose measurement (CGM) by DEXCOM sensor.

Even though there is growing interest in and use of trained Diabetes Alert Dogs (DADs) as a way to monitor blood glucose in type 1 diabetes (T1D), no scientific studies have confirmed the ability of DADs to accurately detect extreme high and low blood sugar. The current project is the first preliminary investigation into the accuracy of DADs, using scientifically rigorous research methods similar to those required to demonstrate accuracy in blood glucose meters. The primary aim of the project is to test the hypotheses that DADs are accurate at detecting extreme blood sugar levels in adults and children with T1D. The proposed project has several other secondary aims, which include determining: 1) the glycemic thresholds and time course for hypo- and hyperglycemic DAD alerts, 2) the degree to which alert accuracy is consistent across different DADs, and 3) whether or not DAD owners appear to experience better psychosocial status and quality of life compared to other individuals with T1D.

The use of exogenous insulin and incorrect nutritional habits are conducive to obesity and excess weight. This leads to the development of insulin resistance, even in patients with type 1 diabetes mellitus. The purpose of this study is to assess the effects of metformin as adjunctive therapy on anthropometric parameters, insulin resistance and metabolic control in overweight and obese patients with type 1 diabetes mellitus. The study group consists of 200 Caucasian type 1 diabetic patients with elevated adipose tissue content as measured by electrical bioimpedance, treated at the Poznan University of Medical Sciences Department of Diabetology in 2009-2014. All patients have type 1 diabetes diagnosed by autoimmune antibodies, and are treated with intensive insulin therapy. This group is divided into metformin treated arm (group I+ M, 100 subjects), the remaining 100 patients are treated with insulin alone (control group, group I). Metformin is administered at least 6 months at a mean dose of 1000 mg/day. The investigators would like to assess the impact of metformin treatment on metabolic control, insulin resistance and anthropometric parameters in overweight and obese patients with type 1 diabetes.

Evaluate the regulatory T cell function in patients with type 1 diabetes mellitus, and find the pathogenesis of this autoimmune disease.

Thromboelastography (TEG) is a laboratory technique used to examine the process of clot formation and degradation by measuring and reporting the kinetic changes, the rate of clot formation, clot strength, and clot stability. TEG provides numeric values and a graphical representation of the primary and secondary hemostatic systems and fibrinolysis more quickly and with a smaller blood sample than routine coagulation studies. TEG6s, the newest TEG platform, simplifies and standardizes TEG technique and is currently available at only four US children's hospitals. Normative values of TEG6s results have not been established in healthy neonates. There are a number of well-established perinatal risk factors for thrombosis in the newborn; however, maternal diabetes has been the most frequently identified risk factor in the newborn since 1965. Despite the well-established hypercoagulable state observed in infants of diabetic mothers (IDMs), there have been no studies evaluating TEG in IDMs. To establish normative data and investigate the hypercoagulable state of IDMs, this observational prospective cohort study will evaluate TEG6s in these two populations: a control group that will include neonates ≥37 weeks gestational age born to mothers with uncomplicated pregnancies and a comparison group that will include neonates ≥37 weeks born to mothers with gestational diabetes or a history of Type 1 or Type 2 diabetes prior to pregnancy, either requiring insulin or diet controlled. We hypothesize that cord blood TEG6s results will differ between healthy newborns and IDMs reflecting a hypercoagulable state in IDMs with an increased coagulation index (CI) in the IDM group. A sample size calculation was performed for a two-sample t-test using the POWER procedure in SAS version 9.4. Based on a two-tailed alpha of 0.05 and a standard deviation of 0.9, the total N was determined to be 40 (i.e., 20 in each group). This yields a power of 0.84 to detect a difference of 1.25 units in the mean CI between IDMs and healthy controls. To avoid blood loss and skin breaking procedures in the subjects, umbilical cord blood obtained from the umbilical cord will be used for analysis. To assure appropriate dilution, a hematocrit will be measured at the time of blood collection using a blood gas machine for prompt results. Sample blood will immediately be taken by the investigators from the delivery hospital to the children's hospital, where the following clotting studies will be performed: PT, aPTT, fibrinogen, platelet count, platelet mapping, and TEG6s. Statistical analyses will be performed on the results of these studies and will provide normative data in healthy newborns and infants of diabetic mothers. Having data on the coagulation profile of neonates will help guide management techniques and help explain the propensity to clot among IDMs and guide further research into prevention and treatment of this complication.

Analyze the Medtronic 670g pump on glycemic control

Management of patients with type 1 Diabetes Mellitus has been changing rapidly in recent years, due in part to the introduction of new technologies such as Apps that recommend insulin boluses, or the use of continuous blood glucose sensors. This fact also entails a change in the care the investigators provide to these patients, facilitating virtual interaction without the need for the patient to go to the consultation, but having all the information necessary to modify treatment doses. There are no studies that compare the influence on glycemic control of conventional management with respect to virtual visits. The investigators have proposed a randomized cohort study, with the aim to compared the changes in glycated hemoglobin in a group of patients with DM1 of the reference area of the "Hospital Comarcal de l´Alt Penedès" followed by telemedicine respect to the usual management in presential consultation.

The study aims to investigate the validity of 2 hour post-prandial UCPCR test in paediatric and adult patients with diabetes duration greater than 2 and 5 years, respectively, for the purposes of distinguishing between patients with type 1 diabetes and MODY in the UAE population.

Beta-cells release extracellular vesicles (EV) and exosomes under normal and pathophysiologic conditions. These EV contain beta-cell specific autoantigens which may trigger the immune response at the initiation of type 1 diabetes. In this study, beta-cell derived EV will be detected and characterized in human blood samples.

As glycaemic variability on the one hand and hypoglycaemia on the other are associated with oxidative stress and inflammation, they are likely, in type-1 diabetic patients, to affect the oxidation of lipoproteins and HDL function, by altering their anti-atherogenic properties. The aim of this study is thus to determine, in patients with Type 1 Diabetic (T1D) who will wear a glycaemic Holter for 1 week, the glycaemia parameters (mean glycaemia, duration of hypoglycaemia, duration of hyperglycaemia, mean amplitude of glycaemic excursions) associated with proatherogenic alterations in lipoproteins, in particular: LDL oxidation HDL oxidation and alterations of HDL function (anti-inflammatory capacity, antioxidant capacity)