Endocrine Abstracts

Pheochromocytomas or Paragangliomas (PPGLs) are catecholamine-producing tumors with a 15% to 20% risk of developing metastasis, which is related to poor prognosis and shorter survival. Despite PPGL metastasis can present an indolent course for years, it eventually progresses leading to the death of the patient. As is usually the case for rare tumors, drug development for PPGL has been very slow and there are currently no effective therapies for progressive PPGL metastasis. We ...

Background: Thyroglobulin (Tg) is a promising biomarker for monitoring iodine nutrition in children and pregnant women. The determination of Tg in dried blood spots (DBS) offers many logistical advantages, simplifying the collection, transport, and storage of samples. The present study aimed to validate an ELISA assay for Tg determination in newborns.Methods: Tg-DBS samples were measured in 196 newborns born from healthy pregnant women. The different cri...

The hypo and hyperthyroidism alter the synthesis/secretion of pituitary hormones, which in normal conditions present fluctuations in serum concentration during the 24h period. An intrinsic pituitary circadian clock might be related to these oscillations; however, the possible interaction between thyroid hormonal conditions and circadian clock gene expression in anterior pituitary is still unknown. The purpose of this study was to investigate the expression of core circadian cl...

Myocardial gene expression and metabolism fluctuate over the course of the day, in association with changes in energy supply and demand. Recently, time-of-day-dependent oscillations in myocardial processes have been linked to the intrinsic cardiomyocyte circadian clock. Triiodothyronine (T3) is an important modulator of cardiac form and function. The genomic actions of T3 are triggered after its interaction with thyroid hormone nuclear receptors that ofte...

The aim of this study was to analyze IGF1R gene expression in patients with idiopathic short stature (ISS) and correlate it with their GH and IGF1 status. In a previous study, we reported lower final height in subjects with ISS and GH peak ≥40 mU/l (Group1, n=16) compared to those with ISS and GH peak between 20 and 40 mU/l (Group2, n=15), after stimulation test (ITT) performed before or during puberty. Patients were 16–24 (Group1) and 15–26 (Grou...

Endotoxemia induces behavioral changes, including a decrease of food intake. Several studies have demonstrated that ADX modifies central nervous system responsiveness to different paradigms. Control of energy homeostasis is regulated by interplay of peripheral signaling conveyed to the hypothalamus and brainstem that control appetite and meal size. We investigated the activity of oxytocin (OT) neurons in the paraventricular nucleus of the hypothalamus (PVN) and tyrosine hydrox...

Background: Thyroglobulin (Tg) is a promising index of iodine status in pregnant women and children. The present study aimed to test a new strategy facilitating the monitoring of iodine status using Tg dried blood spot (DBS) in newborns.Methods: Pregnant women were recruited in the third trimester of pregnancy at the Erasme Hospital in Brussels, Belgium. Thyroglobuline concentrations and urine iodine concentrations (UIC) were determined in pregnant women...

Introduction: Obesity is a multifactorial disease in whose genetic factors are involved. The integration of this factors will allow to state personalized prevention strategies, where the constant contact with the patient will have a greater success for them to follow up recommendations. Continuous technological changes allow bigger accessibility to communication, having platforms with remote control.Objective: Assessing the effectiveness of an Intelligen...

Objective: After Cushing Syndrome (CS) is cured, up to 70% of patients develop chronic adrenal insufficiency (AI) and hypothalamus-pituitary-adrenal (HPA) axis dysfunction. A long-term treatment with glucocorticoids (GC) is mandatory to overcome AI. However, this treatment implies non-desired complications. Fibroblast growth factor (FGF21), a key regulator of metabolism, has a bidirectional relationship with GC that bypasses the negative feedback of the HPA axis. In this study...

Cushing’s syndrome (CS) is a hormonal disorder characterized by chronic high levels of circulating cortisol. Patients treated for CS develop chronic adrenal insufficiency (AI) and hypothalamus-pituitary-adrenal (HPA) axis dysfunction. Long-term treatment with glucocorticoids (GC) is mandatory to overcome AI. Fibroblast growth factor (FGF) -21, a key regulator of metabolism, has a bidirectional relationship with GC that bypasses the negative feedback of the HPA axis. In th...