hrp0092p2-3 | Adrenals and HPA Axis | ESPE2019

Contraceptives in Female Adolescents with 21-hydroxylase Deficiency (CAH) - a way to Optimize Treatment with Respect to Androgen Excess? A Pilot Study

Boettcher Claudia , Graf Stefanie , Flück Christa E

Background: At present, treatment of „classic" congenital adrenal hyperplasia (21-hydroxylase-deficiency, 21OHD) consists of glucocorticoid and mineralocorticoid replacement. However, often androgen excess and its negative metabolic impact are difficult to control without accepting glucocorticoid overtreatment, especially in adolescence. In healthy subjects oral contraceptives (containing ethinylestradiol) increase cortisol binding capacity and free c...

hrp0092p1-309 | Diabetes and Insulin (2) | ESPE2019

Level of Glycemic Control in Pediatric Patients with Type 1 Diabetes in Bern: A Cross-Sectional Study

Ch. Zingg Tanja , Dennig Michelle , Sommer Grit , Flück Christa E.

Background: Good glycemic control prevents long-term complications of microvascular and macrovascular diseases in type 1 diabetes (T1DM).We aimed to investigate whether our patients had A1c values <7.5% as recommended by ISPAD and how therapy modality, duration of diabetes and pubertal status affected the metabolic control of our patients. We also set out to compare our quality of care with our results of 2008 and with other publ...

hrp0084fc6.3 | Gonads &amp; DSD | ESPE2015

Establishing the Role of the Steroid Backdoor Pathway for Androgen Biosynthesis in the Human Ovary

Marti Nesa , Sauter Kay S , Mullis Primus E , Fluck Christa E

Background: Recent work revealed two pathways in androgen biosynthesis, namely the classic and an alternative, the backdoor pathway. In this alternative pathway dihydrotestosterone is produced from 17-hydroxyprogesterone without the intermediacy of testosterone using mostly enzymes that are specific to the backdoor path. In the human ovary, regulation of androgen production plays a crucial role in normal physiology and in pathologies such as the polycystic ovary syndrome (PCOS...

hrp0092p1-164 | Adrenals and HPA Axis (1) | ESPE2019

The Urinary Steroid Signature of Premature Adrenarche

Janner Marco , Sommer Grit , Groessl Michael , Flück Christa

Background: Adrenarche describes the developmental event of the human adrenal cortex when the zona reticularis increases the synthesis of C19 steroids (DHEA/-S) markedly at around 6-8 years of age. Early appearance of this event is called premature adrenarche (PA) and has been associated with adverse outcomes including polycystic ovary syndrome and metabolic syndrome. Recently novel biosynthetic pathways of androgen production have been revealed, but their rol...

hrp0092p3-83 | Diabetes and Insulin | ESPE2019

Diabetes Mellitus in a 16-Year-Old Boy Developing Multiple Neuro-Endocrine Dysfunctions in the Course: Is it Type 1 Diabetes or Wolfram Syndrome, or Both?

Santi Maristella , Emma Flück Christa , Böttcher Claudia

Introduction: Autosomal recessive mutations in the Wolfram syndrome type 1 gene are responsible for the classical Wolfram syndrome (OMIM_ 222300), also known by the acronym "DIDMOAD" (diabetes insipidus, diabetes mellitus (DM), optic atrophy and deafness). The gene encodes wolframin, a membrane glycoprotein, which helps to regulate the calcium homeostasis in the endoplasmic reticulum of many different tissues, including the pancreatic...

hrp0089p2-p287 | Multisystem Endocrine Disorders P2 | ESPE2018

Endocrine Challenges in Patients with Thalassemia

Haamberg Tanja Christa , Schneider Christine , Rossler Jochen , Fluck Christa E

Introduction: Beta-thalassaemia is caused by point mutations leading to decreased production of beta-globin, which results in defective red blood cells and ineffective erythropoiesis. Complications are microcytic hypochromic anaemia, extramedullary haematopoiesis and increased intestinal iron absorption due to compensation mechanisms. The resulting iron overload can be aggravated by recurrent blood transfusions necessary for treatment of anaemia and may cause several endocrine...

hrp0084fc4.4 | Growth | ESPE2015

Modulation of GH-1 Splicing as Potential Strategy to Rescue GH Deficiency Type II

Miletta Maria Consolata , Fluck Christa E , Mullis Primus-E

Background: Isolated GH deficiency type II (IGHD II), the autosomal-dominant form of GH deficiency, is mainly caused by specific splicing mutations in the human GH (hGH) gene (GH-1). These mutations, occurring in and around exon 3, cause complete exon 3 skipping and produce a dominant-negative 17.5-kDa GH isoform that reduces the accumulation and secretion of wt-GH.Objective and hypotheses: As the severity of IGHD II inversely correlate...

hrp0095p1-577 | Sex Differentiation, Gonads and Gynaecology, and Sex Endocrinology | ESPE2022

Pediatric transgender care from an endocrine perspective: experience over the past decade in a tertiary Swiss center

Mazzi Sara , Nussbaum Marie-Lou , Christa Flück E.

Gender dysphoria indicates a psychological distress due to any incongruence between biological sex and gender identity, while transgender identity refers to an individual, whose gender identity is the opposite of the biological sex. The number of gender dysphoric youth seeking hormonal care seems to rise worldwide. Therefore, numerous bioethical and medical controversies are raising about possible side effects of hormonal therapies, including interference with brain developmen...

hrp0092rfc15.3 | Late Breaking Abstracts | ESPE2019

Metformin Treatment Affects ACTH Receptor Activation and Downstream Signaling: A Potential Treatment for ACTH Excess Disorders and Management of Hyperandrogenic States

Parween Shaheena , Pandey Amit V. , Flueck Christa E.

Background: The peptide hormone adrenocorticotropin (ACTH or Corticotropin) is a major component of the stress response system in the Hypothalamus-Pituitary-Adrenal (HPA) axis. Under stress, it is secreted from the anterior pituitary and stimulates cortisol production from the adrenal cortex. Changes in ACTH production or action are associated with multiple disease conditions. In clinical situations like Cushing's disease, ectopic ACTH syndrome and congeni...

hrp0092p1-281 | Sex Differentiation, Gonads and Gynaecology or Sex Endocrinology (1) | ESPE2019

Virilization of a Girl at Puberty Due to a Unique Translocation of an Abnormal Duplicated Y-Chromosome to a Deleted Chromosome 9 Including the DMRT1 Gene

Graf Stefanie , Aliu Nijas , Zeino Mazen , Flueck Christa E.

Background: Virilization at puberty in girls remains a challenge. Several differential diagnoses must be considered including disorders of sex development (DSD) and tumors.Case Report: We report an 11.5-year-old girl who was referred to our center for progressive cliteromegaly since 6 months. Past medical history was remarkable for prematurity of 36 weeks gestation and for mild ongoing psychomotor delay. At presentation ...