ESPE Abstracts

Background: The sonic hedgehog pathway (SHH) regulates CNS development and mutations or abnormal expression of the SHH pathway genes have been identified in epithelial tumors. SHH pathway interacts with Wnt/β-catenin signalling. To date, CTNNB1/β-catenin mutations are the sole molecular abnormality found in adamantinomatous craniopharyngiomas (ACPs).Objective and Hypotheses: To analyze the expression pattern of SHH pathway genes in ACPs and its...

11-year-old female, admitted in the emergency room due to postprandial hyperglycemia (350 mg/dL) in her father´s glucometer without ketosis or acidosis. She referred one-month evolution of mild symptoms, as polydipsia, polyuria, sporadic abdominal pain and nocturia.She was the first child of non-consanguineous parents, born full term at vaginal delivery with a birth weight of 3760g (90th percentile). Since 5-years-old her weight was betwe...

Introduction: Mitochondrial-derived peptide (MOTS-c) is originated from the 12S ribosomal region of mitochondrial DNA. MOTS-c functions as an activator of AKT and AMPK, which are involved in the insulin signaling pathway. In experimental studies, MOTS-c administration was shown to reduce insulin resistance and obesity. Besides, MOTS-c levels were decreased and negatively correlated with insulin resistance in obese male children. In male cases, the MOTS-c</...

Background: Noonan syndrome (NS) is a rare genetic disease characterized by facial dysmorphism, short stature, heart defects, chest deformities, and variable developmental delay/learning disabilities. Almost 80% of patients have a mutation in the genes encoding components of the RAS/MAPK pathway. Puberty was described as delayed in NS patients, but few studies are focusing on this subject and genotype-phenotype correlations so far.<s...

Background: Loss of function mutations in SGPL1, a key component of sphingolipid metabolism, are associated with accumulation of sphingolipid intermediates giving rise to a multisystemic disease incorporating primary adrenal insufficiency (PAI) and progressive renal and neurological disease. Sphingolipids are implicated in mitochondrial apoptosis via induction of mitochondrial outer membrane permeabilization, cytosolic release of inter-membranal cytochrome c and activ...

Background: Congenital hypothyroidism (CH) comprises a heterogeneous group of disorders that includes diseases of the hypothalamo-hypophyseal system. The latter are missed on TSH based screening programs leading to increased morbidity and mortality. Additional T4 determinations, allows an early detection of CH of central origin (CH-C).Objective and hypotheses: To report the findings of a neonatal screening program based on determination of TSH...

Background: Preservation of C-peptide is important and has become regarded a relevant endpoint as already a quite small residual C-peptide seems to be related to both less acute and late diabetes complications.Objective: To assess the residual C-peptide secretion in pediatric patient with T1D.Method: Cross-sectional study of 157 patients with T1D. We analyzed: age at diagnosis, age at time of study (years), sex, diabetes duration (...

Background: Noonan syndrome (NS) is a frequent autosomal dominant disorder characterized by facial dysmorphisms, heart defects, short stature and learning disabilities. It is caused by mutations in genes within the RAS/MAPK signaling pathway, thus called RASopathies. The RAS/MAPK pathway can also impact the signal transduction of hormones involved in body weight, carbohydrate, and lipid metabolism features scarcely studied only in animal models. This study aimed to describe me...

Introduction: Variants in the N-terminal of the Indian-hedgehog gene (IHH) have been associated with Brachydactyly type-A1 (AD) and Acrocapitofemoral dysplasia (AR), only three of which have been functionally studied. However, heterozygous IHH variants, majority classified as variants of unknown significance (VUS) are being increasingly identified, not only in the N-terminal but also in the uncharacterized C-terminal, by NGS, in individuals with short...

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...