Endocrine Abstracts

Introduction: When facing with non-functioning pituitary macroadenomas (NFPMA), radiological invasion is determinant to surgical approach, apart from histological biomarkers of pituitary tumor aggressiveness (Ki-67; p53 and mitotic index). Invasive tumors usually need additional surgery and/or radiotherapy. There are no much studies describing epidemiological data on aggressive pituitary tumors in clinical practice. We provide information regarding the radiological findings of...

Objectives: This study evaluated the prebiotic effect of a moderate intake of extra virgin olive oil (Evoo) and red wine (Rw) polyphenols on modulating the gut microbiota composition and the improvement of metabolic risk factors in obese subjects with high insulin resistance (HIR).Methodology: 10 obese patients with HIR (HOMA-IR>5.5) and 10 lean subject with low insulin resistance (HOMA-IR< 3.3) were included in a randomized and controlled interv...

Background: The prolactin/vasoinhibin axis constitutes a novel endocrine axis in which the generation, secretion, and actions of the pituitary hormones prolactin and vasoinhibins are under control of the hypothalamus, the pituitary gland, and of regulators in the target tissue microenvironment. Vasoinhibins are generated in the pituitary gland and in multiple target tissues through proteolytic cleavage of prolactin; it is not known wether they are also produced in the circulat...

Background: Congenital isolated ACTH deficiency (IAD) is a rare condition characterised by low plasma ACTH and serum cortisol with normal production of other pituitary hormones. TBX19 is a T-box pituitary restricted transcription factor important for POMC gene transcription and terminal differentiation of POMC-expressing cells. TBX19 gene mutations have been shown to cause neonatal-onset congenital IAD. To date 25 mutations in TBX19 have been described, five ...

Background: Optimal management of type 1 diabetes requires full understanding of the relationships between the triad: HbA1c, fasting plasma glucose, and glucose variability (GV). As GV may contribute to HbA1c we assessed the influence of GV in HbA1c levels.Research design and methods: We retrospectively analysed 9393 h of continuous glucose monitorings (CGMs) from 61 patients with type 1 diabetes. Periods of 24 h with missing values were excluded. We cal...

Introduction: Langerhans cell histiocytosis (LCH) is a rare disorder characterized by proliferation/accumulation of cells phenotypically similar to skin Langerhans cells. Clinical presentation and aggressiveness are very heterogeneous, from benign to disseminated forms that cause significant morbi-mortality, particularly endocrine failures.Case 1: A 15-year-old Caucasian woman presented with a 14-month history of headaches, secondary amenorrhea. She repo...

Introduction: Medullary thyroid carcinoma (MTC) occurs in a hereditary pattern in 25% of cases. Virtually all patients with multiple endocrine neoplasia 2A (MEN2A) develop MTC. MTC aggressiveness and natural history varies according to the RET mutation. Prophylactic thyroidectomy may cure and/or prevent metastatic disease in most cases.Case report: A 27-year-old man with past history of colostomy at 5 months of age for Hirschsprung disease and t...

Introduction: Individuals with Turner syndrome (TS) are prone to develop autoimmune conditions. The most frequently found are Hashimoto’s thyroiditis, type 1 diabetes, coeliac disease, and inflammatory bowel disease. In patients with TS, Addison’s disease isolated or combined with other autoimmune disease as type 2 polyglandular autoimmune syndrome, is a rare finding.Case report: We report a case of a 41-year-old female patient, with severe ast...

Introduction: Factitious hypoglycemia results from surreptitious administration of insulin or insulin secretagogues. It can involve non-diabetic individuals with knowledge of hypoglycemiant drugs, or diabetics manipulating the doses.Clinical case: A 42-year-old women, type 1 diabetic since the age of 14, on intensive insulin therapy (A1C: 8.5%), was hospitalized for study of recurrent severe hypoglycemia in the last 2 months, despite successive insulin d...

Introduction: Radioiodine (RAI) therapy is an inexpensive and reliable therapeutic option for Graves’ disease (GD). However, individual characteristics of the disease can influence therapeutic success. The identification of these factors may help to predict outcome and select optimal pre-treatment conditions.Aim: To assess clinical, laboratory and radioactive parameters that may lead to RAI treatment failure in patients with GD....