View clinical trials related to Type 1 Diabetes.
Filter by:We hypothesize that our integrated closed-loop glucose-control system can provide effective, tight, and safe blood glucose (BG) control in type 1 diabetes, thereby establishing the feasibility of closed-loop BG control.
The aim of this study is based on recent pilot studies carried out at Odense University Hospital showing that the acute changes in electroencephalographic (EEG) signals (i.e. electrical activity inthe brain) elicited by insulin-induced hypoglycemia in patients with type 1 diabetes can be reliable detected by real-time processing of these EEG signals using mathematical algorithms and state of the art noise and artifact reduction. These preliminary results also showed that the hypoglycemia-induced EEG changes are detectable 15-30 min before deterioration in cognitive function impedes an adequate response to warning. We hypothesize that these observations apply to the majority of patients with type 1 diabetes, and therefore, that it is possible to develop an automated device to detect hypoglycemic episodes by continuous real-time monitoring and processing of EEG signals. To test our hypothesis, the specific aims of the present proposal are: 1. Detection of hypoglycemia-induced EEG changes using subcutaneous electrodes 2. Ambulatory EEG monitoring using subcutaneous electrodes
The primary objectives are to compare the mean levels of the sleep quality parameters of subjects : with a nocturnal fall of the SBP (Systolic blood pressure), DBP (diastolic blood pressure) and MAP (mean arterial pressure) over of egal to 10% (dipping subjects) and of subjects with a nocturnal fall of SBP, DBP and MAP inferior to 10% (non dipper subjects). The secondary objectives are : Establish correlations between: - The quality of sleep parameters - The parameters of BP variations between the diurnal and nocturnal periods and the awake periods of sleep defined in reference to polysomnography. - The glycemia levels on 24h with a glycemic holter. The parameters of the sympathic system activation evaluated in reference to the measure of the baroreflex sensibility during the awake period.
This study will establish criteria indicating short-term loss of beta cell mass and therefore accelerated progression towards type 1 diabetes.
This study aims to test an insulin and glucagon delivery algorithm designed to be used in conjunction with a continuous glucose monitoring system. This combined glucose sensing/hormone delivery approach is a step on the way to eventual development of an artificial (or automated) pancreas. The insulin and glucagon delivery algorithm is based on the difference between the current blood glucose and the target glucose (proportional error) and the rate of change in blood glucose (derivative error), both adjusted for the recent glucose history. This algorithm is called the Fading Memory Proportional-Derivative (FMPD) Algorithm. The principal investigator of this study has published previous research regarding the use of this algorithm and found it to be well-suited to control blood glucose in type 1 diabetic animals. The addition of glucagon was helpful; better glycemic control with fewer glucose excursions were observed when small intermittent infusions of subcutaneous glucagon were given during times of impending low blood sugar (Ward et al. 2008).
The purpose of this study is to determine whether islet transplantation alters brain glucose concentrations in patients with type 1 diabetes, recurrent hypoglycemia, and hypoglycemia unawareness when compared to that measured prior to transplant in the same subjects.
The purpose of this study is to determine whether injecting Symlin and insulin through a multiple injection port is safe and effective. This will be measured by HbA1c values taken at the beginning of the study and at the final visit. The secondary objective of the study is to measure patient satisfaction toward using the multiple injection port.
The inclusion of "Timing of premeal insulin administration (Timing)" in an Intensive Insulin Therapy regimen will reduce A1C by an average of 1% in type 1 diabetic patients who have initial A1C's between 7.0% and 9.0%.
This is a phase I study to assess the safety and tolerability of infusing expanded stem cells into the pancreas of patients with type I diabetes and a successful renal transplant. The stem cells used in this study occur naturally in the body and are collected from each recipient by a procedure called leukapheresis. The cells are then expanded and differentiated into insulin-like cells in a sterile suite before being injected into the body or tail of the pancreas of the recipient.
The long-range goal of this project is to determine the effects of diabetes and the hypoglycemic consequences of intensive therapy on in vivo brain glucose metabolism in humans. We will measure brain glycogen turnover and content in normal controls and subjects with diabetes under conditions of modest hyper-and hypoglycemia.