Endocrine Abstracts

Introduction: The silencing mechanisms of corticotroph tumors (CT) remain unclear. The most feasible hypothesis lies in a post-transcriptional deregulation of the POMC gene, precursor of ACTH. Micro RNAs (miRNAs) are small non-coding RNA molecules involved in the epigenetic regulation of gene expression through their inhibitory action on messenger RNA. miRNAs capable of inhibiting the expression of POMC have been described at the level of neurons of the hypot...

Introduction: Abnormal thyroid function is the most common disease in endocrinology and its screening of made by plasmatic (TSH), followed by (fT4) determination if abnormal. (fT3) determination is only used when pathological (TSH) and normal (fT4) are found, even if there is no evidence supporting this procedure, apart from the greater technical difficulty of measuring (fT3) due to its lower plasma concentration.Material and Methods: Observational retro...

Introduction: DRESS (drug reaction with eosinophilia and systemic symptoms) syndrome is a severe multiorgan drug reaction, often associated with the development of autoimmune diseases. Pathogenically it has been related to the reactivation or the primary infection of different herpes virus.Clinical case: A 33-year-old woman with a history of residual epilepsy, after resection of a cerebellar pleomorphic xantoastrocytoma, started treatment with Levetirace...

Introduction: Previous results of our group, presented in the ECE last year, showed a lower gene expression of proconvertase PC1/3, involved in the processing of POMC, in silent corticotroph tumors (sCT) than in functioning ones (fCT), overall and in microadenomas. The aim of the present study was to quantify the protein expression of convertases involved in the processing of POMC (PC1/3) and in the degradation of ACTH (PC2, CPE and PAM) in a series of CT.</p...

Introduction: Silent somatotroph tumors (sST) are a pituitary neuroendocrine tumor subtype with positive immunostaining for growth hormone (GH) but without the presence of acromegaly. Unlike silent corticotroph tumors, there is little information in the literature on sST. The aim of the present study was to study the demographic, clinical and molecular characteristics in a series of ST in order to compare sST and functioning ST (fST).Methods: We have stu...

Evidence on whether neonatal thyroid screening results are dependent on maternal thyroid function is limited.Objectives: To study the relationship between iodine status and maternal thyroid function in pregnancy, and neonatal screening results in a Northern Spanish population.Methods: Prospective, longitudinal study of 297 pregnant women recruited in 2 obstetric centers of Pamplona (Spain) at the first antenatal visit, and their ne...

Background: Several ultrasound (US) scoring systems have been proposed to provide rules for standardizing risk stratification of thyroid nodules and to select which nodules should have a fine needle aspiration (FNA) biopsy performed. TI-RADS classification is one of the most used in the daily practise. Recently, EU-TIRADS scoring system has been published to simplify the evaluation of thyroid nodules and to integrate previous classifications into a single system. We aimed to c...

Objective: Owing to their remarkable stability in the serum, microRNAs are being investigated as circulating cancer biomarkers. Several studies have explored their plasma or serum levels in thyroid cancer in order to differentiate benign from malignant nodules preoperatively. However, very few studies have explored the role of microRNAs to detect recurrent disease during postoperative follow-up and none of them used high through-put technologies. Recombinant human TSH (rhTSH) ...

In adult mice the adrenal cortex is divided, in two distinct functional zones, outermost zona glomerulosa (ZG) and innermost zona fasciculata (ZF), encapsulated by a thin layer of mesenchymal cells (capsule). The adrenal cortex undergoes constant centripetal cell renewal, reliying on recruitment of progenitors located within an outer cortex niche. Progenitors initially differentiate as ZG cells and undergo lineage conversion to ZF as they move within the cortex. This relies on...

Introduction: Patients with primary adrenal insufficiency (PAI) require lifelong corticoids replacement and they are at risk of therapy-related osteoporosis and cardiovascular complications.Objectives: Determine the prevalence of cardiovascular risk factors, osteoporosis, and other toxicities related with corticoids treatment.Material and methods: Retrospective, descriptive study in patients with PAI follow up in our service during...