ESPE Abstracts

Background: Autoimmune polyendocrine syndrome type 1 (APS-1) is a rare autoimmune disease characterized by chronic mucocutaneous candidiasis, hypoparathyroidism and primary adrenal insufficiency. Minor components of the disease are diverse among patients, even within the same family. APS-1 is autosomal recessively inherited and caused by biallelic mutations in the autoimmune regulator (AIRE) gene.Objective and Hypotheses...

Background: Both genetic and environmental factors serve as the trigger of Hashimoto's thyroiditis (HT), but the exact mechanisms are still not fully understood. Increased intestinal permeability was shown to be a constant and early feature of several autoimmune disorders. Although HT is the most common autoimmune disorder worldwide, the role of intestinal permeability in its pathogenesis had received little attention. Human zonulin modulates intracellular...

Context: Corticotropin-releasing hormone (CRH)-stimulated inferior petrosal sinus sampling (IPSS) has an important role in the differential diagnosis of hypercortisolism of pituitary or ectopic origin as the most accurate procedure in terms of sensitivity and specificity compared with clinical, biochemical and imaging analyses. However, due to the cost and unavailability issues of CRH, desmopressin may be an alternative to CRH during IPSS.<p class="abstext...

Background: Congenital adrenal hyperplasia (CAH) is an autosomal recessive disorder caused by a defect in any of the enzymatic steps of adrenal steroidogenesis. It occurs due to mutations in genes that encode enzymes involved in the synthesis of cortisol from cholesterol. The most common cause is 21-hydroxylase deficiency, with 11-beta hydroxylase, 3-beta hydroxysteroid dehydrogenase, 17-alpha hydroxylase and POR deficiency being among rarer causes.Objec...

Background: Congenital hyperinsulinism (HI) is the most common cause of persistent hypoglycemia which needs a prompt diagnosis and relevant treatment to avoid brain damage. So far, mutations in 11 key genes are known to cause monogenic forms of HI.Objective and hypotheses: The aim of this study was to characterize the clinical and molecular features of Turkish congenital HI patients and analyze the genotype/phenotype correlations.M...

Context: There is a limited data from large cohorts regarding pubertal characteristics of children with classical 21-hydroxylase deficiency(21OHD).Objective: To explore the timing and tempo of puberty, and pubertal height gain(PHG) in children with 21OHD-CAH.Design: A multicenter observational, retrospective, longitudinal analysis.Patients: D...

Context: Deficiency of 3β-hydroxysteroid dehydrogenase 2 (3βHSD2) causes a very rare form of congenital adrenal hyperplasia (CAH) known as 3βHSD2 deficiency, which is a consequence of biallelic HSD3B2 gene defects. The estimated prevalence is less than 1/1,000,000 live births. Knowledge of comprehensive steroid metabolome patterns in 3βHSD2 deficiency is scarce.Objective: We aimed...

Objective: Congenital Hyperinsulinism(CHI) is a clinically, genetically, and histologically heterogeneous disease. Turkey is a county with highly prevalent cases of severe CHI due to the high rate of consanguinity and recessively inherited KATP gene mutations. We herein evaluated the clinical characteristics, molecular genetic analysis, and follow-up of a large nationwide cohort of CHI from Turkey.Patients and method: Th...