hrp0086rfc7.3 | Gonads & DSD | ESPE2016

Harmonisation of Serum Dihydrotestosterone Analysis: Establishment of an External Quality Assurance Program

Wudy Stefan , Hartmann Michaela , Jolly Lisa , Shun Ho Chung , Kam Richard , Joseph John , Boyder Conchita , Greaves Ronda

Background: Serum dihydrotestosterone (DHT) is an important analyte for the clinical assessment of disorders of sex development. It is also reportedly a difficult analyte to measure. Currently there are significant gaps in the standardisation of this analyte, including no external quality assurance (EQA) program available worldwide to allow for peer performance review of DHT.Objective and hypotheses: We therefore proposed to establish an EQA program for ...

hrp0086p1-p14 | Adrenal P1 | ESPE2016

A Unique Case of Dual Opposing Pathologies

Viseras Irene Fernandez , Giri Dinesh , Bockenhauer Detlef , Deshpande Charu , Achermann John , Taylor Norman , Rumsby Gill , Senniappan Senthil , Ajzensztejn Michal

Background: We present a patient with co-existence of two rare conditions 3β-Hydroxysteroid dehydrogenase type 2 deficiency (HSD3B2) the rarest form of Congenital Adrenal Hyperplasia (CAH) and Bartter’s Syndrome (hypokalaemic alkalosis secondary to hyperaldosteronism).Case Report: A female infant (46XX) born at 34/40 weeks weighing 2.67 kg to non-consanguineous parents presented on day four of life with significant weight loss. Subsequent inves...

hrp0086p2-p73 | Adrenal P2 | ESPE2016

Patients with Congenital Adrenal Hyperplasia have Significantly Higher Healthcare Utilisation than the General Paediatric Population

Jenkins-Jones Sara , Holden Sarah , Morgan Christopher , Currie Craig , Whitaker Martin , Ross Richard , Withe Mike , Porter John

Background: Congenital adrenal hyperplasia (CAH) is a rare disorder of steroid synthesis. Patients have multiple health problems. Healthcare utilisation has not previously been assessed in the paediatric population with CAH.Objective and hypotheses: To assess healthcare resource use in patients in England with CAH.Method: The English Clinical Practice Research Datalink (CPRD) database is an observational and interventional research...

hrp0094fc1.4 | Adrenal | ESPE2021

Acute Illness and Death in Children with Adrenal Insufficiency

Worth Chris , Vyas Avni , Banerjee Indraneel , Lin John , Jones Julie , Stokes Helen , Komlosy Nicci , Ball Steve , Clayton Peter ,

Background: Adrenal Insufficiency (AI) is a heterogeneous diagnosis comprising multiple central and peripheral causes. The unifying feature is the requirement for glucocorticoid replacement and subsequent risk of life-threatening Adrenal Crisis (AC) and Adrenal Death (AD). Very few studies have investigated rates of AD in children. Multiple studies have reported symptoms of children with AC as interpreted by medical staff but no studies have looked at parental...

hrp0097rfc7.5 | Sex differentiation, gonads and gynaecology or sex endocrinology | ESPE2023

Sex differences in endocrine mechanisms during early human fetal brain development

Buonocore Federica , Del Valle Ignacio , P. Suntharalingham Jenifer , Moreno Nadjeda , Developmental Biology Resource Human , C. Achermann John

Introduction: The influence of sex chromosomes and sex hormones on early human brain development is still poorly understood. Expression of Y chromosome genes may influence aspects of brain maturation in the 46,XY fetus, but the contribution of different Y genes is unknown. Furthermore, a marked increase in testicular testosterone biosynthesis/release from the testis occurs at around 8 weeks post conception (wpc) in the 46,XY fetus, but it is unclear whether te...

hrp0098fc12.6 | Thyroid | ESPE2024

The First Robust Bioavailability/Bioequivalence (BA/BE) Study of Thyromimetic Tiratricol, a Treatment in Development for MCT8 Deficiency.

Sonesson Christian , Carroll Kevin , Singh Nand , McDermott John , Sjöblom Nygren Kristina , Näsström Jacques , Paul A Dickinson

Background and Objectives: MCT8 deficiency is a debilitating, ultra-rare, X-linked disorder resulting from dysfunctional thyroid hormone (TH) transport. A lack of TH in the brain results in profound neurodevelopmental delay while a co-existing excess of TH in tissues outside the brain leads to symptoms of chronic thyrotoxicosis. Tiratricol is a naturally occurring metabolite of triiodothyronine (T3) that clinical trials have shown can restore normal TH signall...

hrp0098p2-327 | Late Breaking | ESPE2024

A myostatin inhibitory antibody potentiates the positive effects of insulin on the skeletal muscle and bone phenotype of insulin-deficient diabetic female mice

Kalaitzoglou Evangelia , Adatorwovor Reuben , Ray Philip , Keeble Alexander , Fry Christopher , Uppuganti Sasidhar , Nyman Jeffry , Fowlkes John , Clay Bunn R

Background: Type 1 diabetes is associated with deficits in skeletal muscle and bone mass and quality. Inhibition of myostatin, a negative regulator of muscle mass, was explored as a therapeutic modality to improve the muscle and bone phenotype associated with insulin-deficient diabetes.Methods: We investigated whether an inhibitory myostatin antibody in streptozotocin (STZ)-induced diabetes in female mice is protective f...

hrp0095p1-371 | Sex Differentiation, Gonads and Gynaecology, and Sex Endocrinology | ESPE2022

Exome sequencing reveals a high proportion of causal and candidate gene variants in a large early-onset Primary Ovarian Insufficiency cohort

M McGlacken-Byrne Sinead , P Suntharalingham Jenifer , Ishida Miho , Buonocore Federica , Del Valle Ignacio , Cameron-Pimblett Antoinette , Genomics UCL , T Dattani Mehul , S Conway Gerard , C Achermann John

Background: The presentation of early-onset Primary Ovarian Insufficiency (EO-POI), most often with primary amenorrhea, is at one end of a spectrum spanning 40 years. The aetiology of POI is frequently unclear but next generation sequencing of varied age groups has identified several associated genetic variants. Whether girls with EO-POI are more likely to have a genetic aetiology than those with later presentations remains unknown.<stro...

hrp0092fc2.5 | Bone, Growth Plate and Mineral Metabolism Session 1 | ESPE2019

Age and Gender-Specific Reference Data for High-Resolution Magnetic Resonance Based Musculoskeletal Parameters in Healthy Children and Young People

Elsharkasi Huda M. , Chen ¹Suet C. , Steell Lewis , Joseph Shuko , Abdalrahman Naiemh , Johnston Blair , Foster John E. , Wong Sze C. , Ahmed S. Faisal

Background: The need to understand the relationship between bone, muscle, and fat within the bone-muscle unit has recently gained great prominence. Although high resolution (HR) MRI is a non-invasive imaging modality that can provide this information, there is limited expertise in children and young people.Objectives: To establish MRI-based normative data for bone, bone marrow adiposity and muscle adiposity in children a...

hrp0089s6.1 | Molecular Mechanisms of Tissue Sensitivity to Glucocorticoids: Potential Clinical Implications | ESPE2018

Cardiomyocyte Glucocorticoid and Mineralocorticoid Receptors Antagonistically Regulate Heart Disease

Oakley Robert H , Cruz-Topete Diana , He Bo , Foley Julie F , Myers Page H , Willis Monte S , Gomez-Sanchez Celso E , Chambo Pierre , Cidlowski John A

Stress is increasingly associated with cardiac disease. Glucocorticoids are primary stress hormones that regulate homeostasis through two nuclear receptors, the glucocorticoid receptor (GR) and mineralocorticoid receptor (MR). Cardiomyocytes express both receptors but little is known concerning their specific and coordinated actions in heart physiology and pathology. To examine the in vivo function of glucocorticoid signaling in the heart, we generated mice with cardi...