ESPE Abstracts

MODY (Maturity Onset Diabetes of Youth), mitochondrial diabetes, Wolfram syndrome, neonatal diabetes and the group of special syndromes seen due to gene defects that cause insulin resistance are called monogenic diabetes. MODY is an autosomal dominant form of diabetes with a relatively young onset. It constitutes 2-5% of all diabetes cases. The presence of more than one affected family member in extended families has facilitated studies of this type of diabetes. In monogenic d...

Autoimmune polyglandular syndrome (APS), on the other hand, is a cluster of endocrine disorders resulting from immune dysregulation, often accompanied by damage to non-endocrine organs. There are 2 types of APS: type 1 and type 2 (APS-1 and APS-2). Type 2 APS is characterized by the development of organ- and tissue-specific antibodies. In those with Addison's disease, antibodies to the 21-hydroxylase enzyme found in the adrenal cortex are present in more than 90% of patie...

A defect in one of the 5 enzymes related to the cortisol biosynthesis pathway (cholesterol side chain degradation enzyme, 3-beta-hydroxysteroid dehydrogenase, 17-hydroxylase, 21-hydroxylase and 11-hydroxylase) is responsible for the formation of KAH. Congenital Adrenal Hyperplasia (CAH) is seen in newborn babies with a frequency of 1/10,000-16,000. The most common 21 hydroxylase enzyme deficiency. 3-β-hydroxysteroid dehydrogenase (3βHSD) deficiency is a rare form of ...

The calcium-sensing receptor (CaSR) is a member of the G protein coupled receptor family. It is mostly found in the parathyroid gland and renal tubule. CaSR disorders occur with inherited or acquired mutations. Familial hypocalciuric hypercalcemia syndromes are associated with inactivating mutations in CaSR. The heterozygous form is “benign familial hypercalcemia” and the homozygous form is “neonatal hyperparathyroidism”. In this article, “benign ...

Obesity is a common public health problem. Secondary complications are increasing with the increase in the prevalence of obesity. Studies on the effect of obesity on the urinary system in children continue and are limited. In this study, it was aimed to evaluate the relationship between childhood obesity and lower urinary tract dysfunction (LUTD) with metabolic and anthropometric measures. 400 obese children between 6 and 18 years of age who had a body mass index ≥95 per...

17β-Hydroxysteroid dehydrogenase type 3 (17β-HSD3) is expressed mostly in the testes and converts the inactive Δ4-androstenedione (A) to testosterone (T). 17β-HSD3 deficiency is a rare autosomal recessive disorder and the most common testosterone biosynthesis defect leading to 46,XY Disorders of Sex Development (DSD). To date, more than 40 mutations of HSD17B3 have been reported. 46,XY patients with 17β-HSD3 deficiency would present with wide variable ...

Background: Obesity is characterized by insulin resistance of target tissues, such as skeletal muscle, adipose tissue and liver. Skeletal muscle tissue is responsible for approximately 75% of whole body insulin-stimulated glucose uptake. Previously, it has been shown that skeletal muscle strength is significantly associated with insulin resistance in type-2 diabetics and non-diabetics.Objective and hypotheses: To examine the relationship between insulin ...

Background: Steroid 5α-reductase catalyzes the conversion of testosterone into the more active androgen, dihydrotestosterone (DHT). In 46, XY patients with recessive mutations in steroid 5α-reductase type 2 enzyme (SRD5A2) gene, the degree of ambiguity ranges from isolated hypospadias to severe undermasculinization. SRD5A2 gene is located on chromosome 2 (p23 region) and is comprised of five exons and four introns.Objective and hypotheses: Mult...

Background: Androgen insensitivity syndrome (AIS) is the most common cause of 46,XY sexual differentiation disorders. Clinical presentation is variable among cases with a range from a complete female to male external genitalia. There is a weak correlation between genotype and phenotype.Aım: Our aim is to report clinical and molecular characteristics of siblings with AIS.Patients and methods: Two siblings newborns with ambiguou...

Background: Although there is considerable literature dealing with the diagnosis, initial management and early complications of meningococcemia, data about late complications is scarce. Growth plates may be influenced permanently by ischemia leading to late orthopedic complications such as leg length discrepancy, angular deformity and distorted body proportion. We present a patient with disproportionate short stature due to late squeal of meningococcemia who was misdiagnosed a...