ESPE Abstracts

Background: Autoimmune thyroid diseases are multifactorial diseases with a genetic susceptibility and environmental factors. A potential role of cytotoxic T-lymphocyte-associated protein 4 (CTLA4) gene, Fc receptor-like 3 (FCRL3) gene, Fas apoptotic inhibitory molecule 2 (FAIM2) gene polymorphisms on autoimmune thyroid diseases (AITDs) in children has not been established equivocally yet.Objective and hypotheses: To estimate the association of polymorphi...

Short-chain L-3-hydroxyacyl-CoA (SCHAD, HADH) deficiency is characterized by diazoxide-responsive hyperinsulinemic hypoglycemia in the neonatal or infancy periods. These patients have severe protein (especially leucine) sensitivity. HADH mutations are recessively inherited with less than 50 patients reported so far. The mechanism behind unregulated insulin secretion in SCHAD deficiency is not understood but may involve changes in protein-protein interactions with glutamate deh...

Background: Cushing's syndrome (CS) is very rare in children and the most common cause is the high doses of glucocorticoids (GC) administered. It is well known that application of potent GCs cause iatrogenic CS (ICS) due to suppressing hypothalamo-hypophyseal-adrenal (HPA) axis and later even adrenal insufficiency (AI). Other side effects of GCs are also seen in these patients.Objective: The aim of this study is to r...

Background: Genetic diversity of mutations in the CYP21A2 gene is the main cause of the monogenic Congenital adrenal hyperplasia (CAH) disorder. On chromosome 6p23.1, the CYP21A2 gene is partially overlapped by the TNXB gene and reside in tandem with their highly homologous corresponding pseudogenes (CYP21A1P and TNXA), which leads to recurrent homologous recombination.Methods and Results: The genetic s...

Background: Low birth-weight (bw) and unfavourable intrauterine conditions are associated with a subsequent impact on the endocrine system. However, very little is known about the impact on thyroid function.Objective and hypotheses: We observed genetically identical twins with intra-twin bw-differences from birth until adolescence to objectify the impact of a lower bw on development and health in later life.Method: Bw-difference of...

Background: The GH/IGF-I axis is involved in metabolic control and studies suggest that IGF-I deficiency and subsequent changes in IGF-I signaling in brown adipose tissue (BAT) modifies its thermogenic capacity. Food restriction reduces thermogenic capacity in BAT, while leptin stimulates thermogenesis through uncoupling protein 1 (UCP-1) induction. Leptin and IGF-I maintain important crosstalk in different tissues, but whether these two hormones interact to r...

We evaluated growth parameters and endocrine disorders in relation to the quantity of liver iron (LIC) measured by the Ferriscan method and insulin-like growth factor 1 (IGF-I) level in a cohort of adolescents with sickle cell disease (SCD) (n=40) and beta thalassemia major (BTM) (n=52) receiving nearly the same protocol of transfusion and iron chelation therapy since early childhood. Before transfusion, hemoglobin concentration had not been less than 9 g/dl ...

Introduction: Pituitary imaging is important for the evaluation of hypothalamo-pituitary axis defects in patients diagnosed with childhood-onset growth hormone deficiency (CO-GHD). Published evidence shows that there is a close relationship between structural changes in the pituitary gland and growth hormone deficiency.Aim: To evaluate the relationship between clinical, laboratory and magnetic resonance imaging of the pi...

Background: The Xp21 contiguous gen deletion syndrome is a rare disorder which is characterized by complex glycerol kinase deficiency, congenital adrenal hypoplasia, intellectual disability and Duchenne muscular dystrophy. It is caused by partial deletion of Xp 21. On Xp21 several genes are located contiguously, such as NR0B1/DAX1, dystrofin gen and gene for glycerol kinase, and the clinical features depend on the size of the deletion. The major clinical manif...

Background: Congenital hyperinsulinism (CHI) is a condition caused by dysregulated insulin secretion. Compound heterozygous mutations in ABCC8 or KCNJ11 genes account for approximately 13% of CHI mutations and have traditionally been associated with diffuse disease unresponsive to diazoxide.Objective and hypotheses: To analyse the clinical presentation and response to treatment of patients diagnosed with CHI due to compound heterozygous...