ESPE Abstracts

Background: Introital stenosis in CAH girls could occur due to poor estrogenisation of vaginal tissue. It is unknown whether CAH genital skin is equally capable of responding to estrogens and androgens, depending on form and degree of external virilisation.Objective and hypotheses: To determine the levels of oestrogen α (ERa) and androgen receptors (AR) immunoreactivity in genital tissues of girls with CAH.Method: Surgical was...

Background: Primary adrenal insufficiency (PAI) is a potentially life-threatening condition that requires accurate diagnosis and urgent treatment. Congenital adrenal hyperplasia is the most common cause of PAI in children. Non-CAH causes of PAI are relatively rare. Although several molecular causes have been found, it is emerging that considerable overlap in the clinical and biochemical features of these conditions exists.Objective and hypotheses: We inv...

Background: Premature thelarche (PT) is a benign, non-progressive condition defined as isolated breast development without the activation of the hypothalamic-pituitary axis. While the pathophysiology of PT remains unclear, increased sensitivity to estrogen may cause PT.Objective and hypotheses: The aim of this study was to investigate the association between polymorphisms in the estrogen receptor alpha (ERα) gene and PT in girls.<p class="abstex...

Background: Vitamin D Dependent Rickets Type IA(VDDR1a) is an autosomal recessive disorder characterized by defects in the biosynthesis of its active form 1,25 dihydroxyvitamin D due to the mutations in the CYP27B1 gene encoding for the enzyme 1α-hydroxylase.Objective and hypotheses: To evaluatethe clinical characteristics, molecular genetics aetiology and long-term outcome of a large nationwide cohort of VDDR-Ia f...

Aim: Hypophosphatemic rickets (HR) is a rare renal phosphate wasting disorder commonly related to X-linked form, caused by PHEX mutations and it treatment and follow-up is challenging due to imperfect treatment options. Here we presented nationwide data on HR with initial and follow-up data on the patients presented to the pediatric endocrinology clinics before the age of 18 years.Results: From 24 centers, 158 patients (93 male/65 female) were i...

Background: Oestrogens are well known for their capacity to promote bone maturation and at high doses to induce growth plate closure and thereby stop further growth. High-dose oestrogen treatment has therefore been used to limit growth in extremely tall girls. However, recent data suggest that this treatment may have severe side effects, including increased risk of cancer and reduced fertility.Objective and hypotheses: We hypothesised that oestrogenic ef...

Background: Less than 1% of breast cancer cases occur in women aged <25 years but young age at diagnosis is associated with an increased risk of recurrence and inferior survival compared to older patients. Breast tumours from young patients have an increased incidence of adverse pathological features; however it is not clear whether this fully explains poor outcomes.Objective and hypotheses: The Prospective Study of Outcomes in Sporadic and Hereditar...

Introduction: Wolfram syndrome (WS) is a rare autosomal recessive disorder characterized by the association of early-onset, insulin-dependent diabetes mellitus (DM), diabetes insipidus, deafness, and progressive optic atrophy. The disease is caused by mutations of wfs1 located on 4p16 encoding peptide that is called wolframin. Wolframin is a component of the endoplasmic reticulum (ER) membrane. It is considered that mutant Wolframin might cause increased misfolded and...

Background: The oestrogenic activity of endocrine-disrupting compounds (EDCs) has been reported to be associated with premature thelarche (PT) and precocious puberty. Some years ago, we developed a recombinant cell bioassay to determine serum estrogenic bioactivity (EBA) that is useful in physiology, as well as in the field of the environmental-related endocrine diseases. We recently improved the assay with an evaluation of EBA before and after incubation with estrogen recepto...

Growth response to daily GH treatment can be predicted using pre-treatment gene expression profiles.1 Once-weekly GH treatment potentially reduces the burden of daily injections2 and thus may be a major advancement in care for patients with GHD, vs standard, daily GH treatment. Here we investigate the prediction of first-year growth response based on pre-treatment blood transcriptome in children with GHD undergoing treatment with daily or once-weekly GH. ...