Endocrine Abstracts

Background: The so called ‘big-big’ prolactin, also known as macroprolactin is formed by prolactin-immunoglobulin complexes, is considered to be biologically inactive, but may cause elevation of serum prolactin (Prl) concentrations measured by standard assays. In women presenting with oligo- and/or amenorrhoea the cause of menstrual irregularity needs to be explained even in the setting of concomitant macroprolactinaemia. We have therefore attempted to assess the pre...

Background: The so called “big-big” prolactin, also known as macroprolactin is formed by prolactin-immunoglobulin complexes, and is considered to be biologically inactive. Nevertheless, macroprolactin may cause elevation of serum prolactin (Prl) concentrations measured by standard assays. In women presenting with oligo- and/or amenorrhoea the cause of menstrual irregularity needs to be explained even in the setting of concomitant macroprolactinaemia. We have therefor...

Macroprolactin is formed by prolactin-immunoglobulin complexes and may cause elevation of prolactin (Prl) concentrations, potentially leading to unnecessary investigations and/or treatment. We have endeavoured to assess the prevalence of macroprolactinaemia in euthyroid women with non-toxic goitre and to assess whether autoimmune thyroid disease may result in an increased prevalence of macroprolactinaemia.Material & Methods: We measured serum Prl in ...

Introduction: Prolactin is a hormone which is characterized with a high structural and functional polymorphism. Macroprolactin is one of the form of prolactin - it is a complex of monomeric prolactin and immunoglobulin. Macroprolactin is characterized with immunoreactivity and probably the lack of biological activity.Purpose: The main purpose of our study was to estimate the frequency of macroprolactin appearance among the patients with hyperpronactinaem...

Introdutcion: In recent years, thyroid microcarcinoma (TMC) predominates in the context of diagnosis and treatment of thyroid cancer. TMC has an excellent prognosis, its management is changed in the last few years, reducing surgical procedure and role of radioiodine ablation (RAI). Therefore, the question is what tests have a diagnostic value in patients with thyroid microcarcinoma after thyroidectomyThe aim of this study was to evaluate the role of 131 ...

Introduction: Adrenocorticotropic hormone (ACTH) is a tropic hormone produced by the anterior pituitary that stimulates the adrenal glands to release cortisol. The ACTH measurement is often used to diagnose the pituitary and/or adrenal disorders, mainly Cushing’s disease, Cushing’s syndrome, Addison’s disease and hypopituitarism. Therefore, the assessment of plasma ACTH concentration is a crucial step in the differential diagnosis of hypothalamic–pituitary&...

Introduction: Undetectable concentration of Tg after rhTSH stimulation (Tg/rhTSH) is one of the most important criteria in evaluating the effectiveness of radioiodine ablation in patients with differentiated thyroid cancer (DTC) treated with 131I.Aim: To evaluate the possibility of using L-T4 suppression treatment (Tg/L-T4) measurements by the ultrasensitive method TRACE (immunofluorescence method) with the KRYPTOR analyzer instead of the Tg/rhTSH measur...

Introduction: Treatment of Graves orbitopathy (GO) is one of the most difficult problems in clinical endocrinology. Objective: To establish the efficacy of the regime used in the treatment of GO and to analyze methods used to determine treatment effectiveness.Material: The study involved 30 patients with moderate to severe GO (according to the classification of EUGOGO) being in the active phase of GO.Method: ...

Introduction: The correct 25-hydroxy vitamin D (25(OH)D) level plays a key role in the proper supply of vitamin D for the organism. Vitamin D deficiency may lead to an increased risk of development of various neoplasms, including papillary thyroid carcinoma (PTC).Aim: Evaluation of the prevalence of vitamin D deficiency in patients with PTC and analysis of the relation between 25(OH)D levels and age, sex, place of living, severity of the disease, and pre...

The pentagastrin-stimulated calcitonin test is known and widely used in monitoring patients with MTC. Given the problems of pentagastrin availability other diagnostic tests are being tried.The goal of the study was the evaluation of safety and tolerance of high-dose calcium to stimulate calcitonin in MTC patients.Materials: The study included 41 patients after surgery for medullary thyroid cancer who were under observation. Patient...