Endocrine Abstracts

Background: The altered DNA methylation of certain genes in Pituitary Neuroendocrine Tumors (PitNETs) are well known. However little information is available regarding global methylation changes and the process of demethylation in these tumors. In addition, influencing global methylation-demethylation could be a potential new therapeutic option especially in clinically non-functional PitNETs.Material and Methods: Overall, 44 fresh frozen pituitary adenom...

Object: Adolescence is the period during which the greatest accrual of bone mineral occurs. During puberty, changes of bone metabolism primarily depend on maturity. Diagnosis and therapy of childhood bone diseases is difficult due to the lack of reference ranges of metabolic bone markers. Our aim was to establish the reference values of bone markers in primary school students (mean age: 13.2±1.2 years; 65 girls, 56 boys).Methods: The children were d...

Objectives: Neonatal severe hyperparathyroidism (NSHPT) is induced by inactivating mutations of human calcium-sensing receptor (CaSR). We report the case of a now 11 year-old boy with NSHPT. We characterize a novel inactivating mutation with the results of some functional analyses.Case: In the neonatal age the patient presented the clinical syndrome of NSHPT. At the age of 6 years, persisting hypercalcemia without clinical symptoms was documented, and th...

Introduction: In the human, obesity is one of the leading health problems as declared by the World Health Organization. Obesity is frequently associated with diabetes, hypertension and hyperlipaemia, these acts together as metabolic syndrome (MS). The risk of cardiovascular diseases is 5 to 10 times higher in MS. Lack of daily exercise is a good reason to evolve MS. Several hormones take part in the development of MS. Leptin and insulin, which are produced by the adipose tissu...

Issue: The use of thyroglobulin (Tg) as tumor marker in differentiated thyroid cancer (DTC) is limited in the presence of thyroglobulin-antibodies (TgAb) but it is generally believed that this is true only for TgAb concentrations over the normal ‘cut off’ point.The aim: Of this study was to investigate if TgAb-s in the normal range, considered to be physiological, may also influence the accuracy and clinical relevance of Tg measurement.<p c...

The hypothalamic suprachiasmatic nucleus (SCN) is the key-structure of the control of circadian rhythms. Several observations support the view that glutamate is the primary transmitter of the retinal projection to this cell group. The glutamatergic innervation of the nucleus is not limited to this projection, it is much more extended. The aim of our investigations was (1) to examine whether are glutamatergic neurons existing in the SCN and (2) to get information about the rela...

Introduction: Prader-Willi Syndrome (PWS) is a complex syndrome including hyperphagia, pituitary hormone deficiencies, low muscle mass and cognitive impairment. Treatment with recombinant Growth Hormone (GH) has beneficial effects on body composition, physical performance, cognition, psychomotor development, respiratory function, and quality of life of patients with PWS. GH treatment has a narrow therapeutic range. Clinicians measure serum immunoreactive Insulin-like Growth Fa...

The angiotensin II (AngII) hormone exerts a number of biological effects through the type 1 angiotensin II receptor (AT1R). One of the main targets of AngII are vascular smooth muscle cells, their stimulation activates many signaling pathways and results in gene expression changes.Affymetrix Gene Chip experiments were performed to analyze the effects of AngII stimulation on gene expression. For the determinations, aortic thoracic aorta from young male Wi...

Introduction: In vitro monolayer cell cultures are not able to faithfully model the biological features of the three dimensional (3D) structure of solid tumours. There are limited information about the applicability of 3D cell culturing methods for modeling of tumours of endocrine organs.Aim: The aim of our work was the establishment and characterization of three-dimensional in vitro models of various endocrine tumour cells in order to ...

Background: Differentiated thyroid cancer (DTC) <1 cm without risk factors require only lobectomy, and there is no need for radioiodine remnant ablation (RRA). The approach for surgery and RRA after surgery is less clearly defined for tumours measuring 1–4 cm.Objectives: We aimed to evaluate the surgical approaches of DTC in stages pT1–2 in a moderate iodine deficient area. We compared our data to the current European Thyroid As...