ESPE Abstracts

Background: Neonatal diabetes may be defined as hyperglycemia diagnosed within the first 6 months of life which is permanent neonatal diabetes or transient neonatal diabetes. They can result from some gene mutations such as KCNJ11, ABCC8, INS, GCK, … In there, the most common cause of neonatal diabetes mellitus is associated with activating mutations in the KCNJ11 gene, which encodes Kir6.2-a subunit of the ATP-sensitive potassium channel (KATP) of the β cell and AB...

Keywords: recombinant human growth hormone (rhGH), growth hormone deficiency (GHD), short statureBackground: Recombinant growth hormone is used for the treatment of growth hormone deficiency. In children treated early, catch-up growth is excellent, with a normal final height. A final height gain of 30 cm can be expected on average. However, it has long been recognized that there is variability in the magnitude of individ...

Background: Congenital hyperinsulinism of infancy (CHI) is the most common cause of severe hypoglycaemia in children. Although CHI arises from mutations in KATP channels which lead to inappropriate insulin secretion, CHI it also is associated with marked changes in islet organization.Aims and objectives: Our aim was to investigate the structure and composition of the islet capsule in CHI and age-matched control tissue.Me...

Background: Hypoglycaemia due to congenital hyperinsulinism (CHI) usually presents early (E-CHI) in the neonatal period, but late presentation (age >1 month) (L-CHI) also occurs. Adverse neurodevelopment is well recognised in both early and late CHI, but differences between both groups are not known.Objective and hypotheses: We examined a cohort of children with E-CHI and L-CHI to test neurodevelopmental outcomes in mid-childhood.<p class="abstex...

Background: Congenital hyperinsulinism (CHI) is the commonest cause of persistent hypoglycaemia and is due to the unregulated secretion of insulin from the pancreatic β-cells. The role of glucagon like peptide-1, gastric inhibitory polypeptide (GLP1/GIP), and dipeptidyl peptidase-4 (DPP4), is currently unknown in patients with CHI.Objective and Hypotheses: To understand the expression pattern of DPP4 in focal and diffuse disease CHI.<p class="ab...

Background: Atypical forms of congenital hyperinsulinism in infancy (CHI-A) represent a novel subgroup of patients who present later in the neonatal period; have poor responses to medical intervention; an unremarkable histopathology and no known genetic cause of disease.Objective and hypotheses: To compare the expression profiles of insulin and somatostatin in islets from patients with CHI-A, diffuse CHI (CHI-D) and age-matched control tissue.<p clas...

Background: Diffuse congenital hyperinsulinism in infancy (CHI-D) mainly arises from mutations in KATP channel genes. In addition, there are also several reports of increased cell proliferation in CHI-D. We hypothesised that the higher rates of proliferation in CHI-D are as a consequence of failure to terminate proliferation in the neonatal period.Objective and hypotheses: To test this we examined the proliferative index (PI) of CHI-D tissue a...

Background: Congenital hyperinsulinism (CHI) is the most common cause of the persistent hypoglycemia in children and occurs in approximately 1 in 50,000 live births. Genetic testing provides information on the pancreatic histological subtype (i.e. focal vs diffuse) and determines further management and prognosis of the patients. At least 11 known monogenic forms and several syndromes have been associated with CHI. Mutations in ABCC8 and KCNJ11 genes coding pot...

Background/hypothesis: Congenital hyperinsulinism in infancy (CHI) mainly arises from mutations in ATP-sensitive potassium channel genes. However, the expression pattern of defects can be markedly diverse. In diffuse CHI (CHI-D) all islet cells express gene defects, whereas patients with focal CHI (CHI-F) only express defects in a localised region of islet cells due to loss of a maternally-imprinted locus. Here, we examined the properties of a novel population of CHI islet cel...

Context: Major advances have been made in the genetics and classification of congenital hyperinsulinism (CHI; OMIM #256450).Objective: To examine the molecular and clinical characteristics of the Finnish patients with persistent and transient CHI.Design: A cross-sectional study with the register data and targeted sequencing of 104 genes affecting glucose metabolism.<p class="ab...