French National Cohort of People With Type 1 Diabetes
Diabetes MellitusType 13 moreCardiovascular (CV) diseases are the most frequent type 1 diabetes (T1D) complications. A recent epidemiological study showed that patients with T1D have a two-fold CV mortality risk, even in case of good glycemic control. In addition, it has been shown that patients with T1D with no traditional CV risk factors had about a 80% higher risk of cardiovascular event compared to non-diabetic individuals. This indicates that further modifiable risk factors in relation to CV mortality remain to be identified. One of the candidates that could help to disentangle the factors associated with the increased CV mortality in T1D patients is glycemic variability which could contribute to diabetes complications. Indeed, severe hypoglycaemia, one of the most severe consequence of glycaemic variability, are associated with a higher mortality in patients with type 1 and type 2 diabetes. In order to evaluate the relation between glycemic variability, insulin therapy modalities and CV risk as well as some other questions related to health determinants of T1D, we are building up a large observational, prospective, multi-centric cohort study of patients gathering 15,000 patients with T1D, age above 6 years old, to perform the following: Collecting clinical information Evaluating Glycemic variability (assessed by the coefficient of variation of glucose (CV) calculated from automatically downloaded continuous glucose monitoring data (CGM) Biobanking including plasma, DNA, urine, saliva and hair. Collecting patients' reported outcomes through auto-questionnaires (online questionnaires). Doing an active follow-up for a period of 10 years with an intermediate visit every 3 years. Passive follow-up: link to national Health data system (Système National de Données de Santé, SNDS) in order to exhaustively collect health events as death, CV events and hospitalizations (including severe hypoglycemia).
Recurrent Hypoglycemia in Type 1 Diabetes (Aim 2)
Diabetes MellitusType 1This study will explore the cerebral mechanisms of impaired awareness of hypoglycemia (IAH) in type 1 diabetics following exposure to experimental recurrent hypoglycemia (HG). To induce IAH, patients with T1D identified to have normal awareness of hypoglycemia (NAH) will undergo three 2-hour long hypoglycemic clamps. Neurochemical profiles will be measured by high field MRS before and after induction of IAH. Subject glycemic variability and activity/sleep for 1 week before each study will be monitored as all factors have been shown to alter responses to HG.
Investigating the Relationship Between Nocturnal Glucose Levels and Motion During Sleep
DiabetesHypoglycemia1 moreIn this study the investigators will explore whether the motion during sleep of people with diabetes changes as a function of the blood glucose levels. The motion will be assessed with a radar sensor, a thermal camera, and wrist worn smartwatches. Additionally, participants will answer a short daily questionnaire. Data will be collected for 10 days and analyzed at the end of the study.
CGM-Assisted Management of PN
Intestinal FailureHypoglycemia1 moreThe purpose of this study is to learn more about changes in glucose levels in hospitalized infants with intestinal failure receiving parenteral nutrition or PN (nutrients delivered intravenously), as they transition from continuous PN (given 24 hours a day) to cycled PN (given less than 24 hours a day). There is an increased risk of glucose abnormalities with cycled PN, which can be harmful to infant growth and brain health. Continuous glucose monitors (CGM) will be used to measure interstitial glucose levels (in the tissue under the skin), which are similar to blood glucose levels. CGM is a small, minimally-invasive sensor worn on the thigh, which gives a glucose measurement every 5 minutes, and can help us understand changes in blood sugar levels without having to do a blood draw or fingerstick. CGM will be used during PN cycling for up to 30 days or until hospital discharge. CGM data will be hidden from the clinical team, there will be no change to routine clinical care. This study may help us understand how cycled PN affects glucose levels in infants with intestinal failure, which may help other children treated with cycled PN in the future.
DiGESTnewborn Study
GDMHypoglycemiaWe wish to study the effect of a mothers sugar (glucose) control during pregnancy on her baby's sugar control after birth.
Novel Approach for the Prevention of Hypoglycemia Associated Autonomic Failure (HAAF)
Diabetes MellitusType 12 moreThe overall goal of this study is to develop a new and practical way to prevent the development of Hypoglycemia Associated Autonomic Failure (HAAF), which is unawareness of hypoglycemia (low blood sugar) in individuals with diabetes. Previous studies suggest that two medications, naloxone and diazoxide, may increase the body's ability to respond to episodes of low blood sugar and prevent the development of HAAF (or hypoglycemia unawareness). Only healthy subjects are being recruited for this study. The study has three distinct phases. In the first phase, healthy, non-diabetic individuals who are susceptible to developing HAAF are identified. Only these individuals will be studied in the second and third phases. The second phase of this study evaluates the effect of using a naloxone nasal spray versus a placebo nasal spray in improving the body's response to episodes of low blood sugar and in preventing the development of HAAF. The third phase of this study evaluates the effect of using naloxone nasal spray and diazoxide in combination, compared to naloxone nasal spray plus a placebo (for diazoxide) or diazoxide plus a placebo (for naloxone) in improving the body's response to episodes of low blood sugar and in preventing the development of HAAF.
Pasireotide s.c. in Patients With Post-Bariatric Hypoglycaemia
Post-Bariatric HypoglycemiaThe Total duration of trial participation for each participant with post-bariatric hypoglycemia will be a maximum of 59 weeks, with the following duration of trial periods 19 weeks for the Core Phase. It is composed of: a Screening period: a maximum of 3 weeks a Run-in period (no treatment): 4 weeks a Blinded Treatment Phase: 12 weeks 36 weeks Extension Phase = an open-label Treatment period 4 weeks for the safety follow-up period (without any treatment).
Impact of Preoperative Fasting on Intraoperative Glycemic Homeostasis and Enhanced Recovery in Children...
Anesthesia MorbidityChild2 moreIn 2018, the main societies of anesthesia (European Society Anaesthesiology, European Society Pediatric Anesthesia, and Association des Anesthésistes Réanimateurs Pédiatriques d'Expression Française) changed the current recommendations for preoperative fasting time in children, reducing the time to last intake of clear liquids from two to one hour before anesthetic induction. Prolonged fasting may have a deleterious impact on blood glucose homeostasis. The consequences of intraoperative hypoglycemia in children can be serious in the short term, but also in the long term. The objective of multicenter prospective, observational cohort study is to investigate- in children younger than 24 months of age undergoing scheduled conventional inpatient surgery- a correlation between the duration of preoperative fasting, glycemic intraoperative homeostasis and the criteria of enhanced recovery after surgery, which are the hospital length of stay (main outcome), postoperative pain and postoperative nausea-vomiting (secondary outcomes). By identifying non-adherence to fasting rules as one of the causes of prolonged hospitalization, this study will highlight the need to develop effective strategies to promote adherence to fasting rules in pediatric surgery and minimize the potential deleterious impact on intraoperative glycemic control.
Diabetes Type One in Pregnancy and Continuos Glucose Monitoring
Large-for-gestational-age NeonatesGlycemic Variability3 moreType I diabetes mellitus (T1DM) affects about 0.1-0.2% of all pregnancies. T1DM in pregnancy increases the risk of maternal and neonatal complications. Continuous glucose monitoring systems (CGM) provide a continuous display of measured glucose. Studies have shown improved pregnancy outcomes for patients with T1DM using CGM when compared to capillary blood glucose measurements. This prospective observational study analyses impact of glycemic variability on development of large-for-gestational-age neonates and effects of hypoglycemia during pregnancy on pregnancy outcomes. Furthermore, overall glycemic regulation, different insulin metrics and C-peptide concentration during pregnancy will also be assesed.
Late Preterm Corticosteroids and Neonatal Hypoglycemia
Neonatal HypoglycemiaPrematurityThis is a prospective randomized controlled trial investigating the timing of betamethasone administration in late preterm infants in relation to delivery and impact on neonatal hypoglycemia. Previous data has shown that neonatal hypoglycemia is increased in late preterm infants that were exposed to antenatal corticosteroids. The investigators hypothesize that the timing of steroid administration may impact the development of neonatal hypoglycemia.