With an increased incidence of pediatric type 1 diabetes (T1D) and a decrease in age at diagnosis, children are exposed to complications such as renal impairment at a very young age. The current biomarker used to diagnose renal impairment is microalbuminuria, but it's a late marker. Early screening is a major issue to reduce T1D consequences. Early glomerular hyperfiltration (GHF) could participate in the development and progression of nephropathy. Hyperfiltration has also been associated with a systemic endothelial dysfunction and with changes in arterial stiffness, suggesting, at least to a certain extent, a state of generalized vascular dysfunction. Diabetes is responsible for very early neurovascular dysfunctions, detectable with techniques to evaluate cutaneous neurovascular interaction. Those should help bringing to light very early microcirculation impairment, particularly precocious endothelial dysfunction (ED). No study about correlation between GHF and ED is currently available. The hypothesis assessed is those of a strong correlation between ED and GHF in children and adolescent with a story of T1D for at least 10 years. This pilot study should allow assessing ED's and GHF's proportions in our population, in order to conduct a larger study to prove, in a prospective way, the prognostic value of ED in the apparition of nephropathy, taking into count other factors such as diabetes duration or stability. This measure could be included in the global evaluation of microangiopathy risk in children and then take action to prevent negative outcomes. The second aspect of this study is the assessment of other functions and metabolisms possibly impaired in T1D: osseous microarchitecture, vitamin D status and precocious evaluation of macro angiopathy through intima media thickness measurement. Long term diabetes in children is associated with shorter and leaner bones, despite a correct mineralization, a reduced bone density and a fracture risk increased six fold. Bone status in the population will be evaluated through the study of bones microarchitecture via HR-pQCT (High Resolution peripheral Quantitative Computed Tomography) on both tibia and radius, dual-energy X-ray absorptiometry (DXA), and bone turn over biochemical markers. Results on bone microarchitecture in a preexisting cohort of healthy children and adolescents will be used to compare results.
Age range
10 Years – 18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Glomerular hyper filtration (Glomerular filtration > 135 mL/min/1,73 m2)
Timeframe: Day 1