ESPE Abstracts

Background: Disorders of sexual differentiation (DSD) constitute a great challenge in patient management especially in a low resource settings with inadequate manpower in various specialities, as it involves critical reasoning, careful evaluation, multidisciplinary involvement and making difficult decisions such as rearing sex and gender issues.Aim: To highlight the importance of forming a DSD team in the management of these children and to document our ...

Case report: 6 yrs. old boy presented with high total T4, free T4, reverse T3, and normal total T3 and TSH. He has a history of tic disorder. Blood pressure, and heart rate were normal, no palpitations, no weight loss. Thyroid peroxidase and thyroglobulin antibodies were normal. Thyroid sonogram was normal. Family is of Hispanic origin. There was a family history of elevated T4 in the paternal uncle (half-brother of the father)Me...

Background: The steroidogenic enzyme aromatase (CYP19A1) is a protein located in endoplasmic reticulum (ER) that catalyzes the conversion of androgens to estrogens. Both deficiency and excess of aromatase activity lead to disease states implicating its role in human biology. Cytochrome P450 (CYP) enzymes in ER use reduced nicotinamide adenine dinucleotide phosphate through cytochrome P450 oxidoreductase (POR) for their metabolic activities. Mutations in POR cause disorders of ...

Background: The process of sexual differentiation is central for reproduction of almost all metazoan. Recently, we identified CBX2.1 a chromatin architecture regulator, as an essential transactivator for human male gonadal development. CBX2 has a second isoform CBX2.2. Since nothing is known about the role of CBX2.2 in human sex development, we took advantage of the p.C132R mutation in CBX2.2 in a 46,XY disorder of sex development (DSD) patient with complete female phenotype a...

Background: Thyroid hormone resistance (THR) is a rare genetic disorder that may be caused by thyroid hormone (TH) cell transporter defects or metabolism defects, but most cases are caused by an inherited mutation in the TH receptor beta (THRB) gene. The reduced responsiveness of target tissues to TH is characterized by elevated TH and a normal or elevated thyroid-stimulating hormone (TSH) level. Differentiating between THR and TSH-producing pituitary...

Introduction: Congenital hypothyroidism is defined as thyroid hormone deficiency present at birth. It is the most common congenital endocrine disorder. Neonatal screening test for hypothyroidism can allow its early detection. The course of disease can be permanent or transient. Some permanent congenital hypothyroidism has been linked to defects in proteins involved in the synthesis of thyroid hormones. One of the critical steps in the synthesis of thyroid hormone is the genera...

Background: Congenital hyperthyroidism is a rare disease. In most patients with congenital hyperthyroidism are autoimmune forms caused by maternal thyroid-stimulating antibodies. In contrast to autoimmune hyperthyroidism that is transient, nonautoimmune form of congenital hyperthyroidism is persistent and results from activating germline mutations in the thyrotropin receptor (TSHR) gene.Case presentation: We report the case of a Korean male infant with s...