Endocrine Abstracts

Polycystic ovary syndrome (PCOS) is heterogeneous disorder leading to infertility. The introduction of Rotterdam criteria creates different PCOS phenotypes, i.e. hyperandrogenic anovulatory with (A) and without (B) polycystic ovaries (PCO) morphology in ultrasonography (usg), hyperandrogenic ovulatory with PCO morphology in usg (C), non-hyperandrogenic anovulatory with PCO morphology in usg (D). In PCOS insulin resistance might be involved in the development of endocrine and m...

Fibroblast growth factor 21 (FGF21) might increase glucose uptake in adipocytes and reduce plasma glucose and triglycerides in animal models of diabetes. The aim of the present study was to assess serum FGF21 concentration in lean and obese subjects, its regulation by hyperinsulinemia and relationship with insulin sensitivity and glucose and lipid oxidation. We examined 76 subjects with normal glucose tolerance, 36 lean (BMI <25 kg/m2) and 39 overweight or obese...

Polycystic ovary syndrome (PCOS) is a main cause of women infertility. There are data suggesting an increased risk for cardiovascular disease in PCOS. Insulin resistance might play a role in the pathogenesis of PCOS and its metabolic complications. The aim of the study was to asses the prevalence of The National Cholesterol Education Program (NCEP)-defined metabolic syndrome (MS) in women with PCOS in relation to insulin resistance and endothelial dysfunction – soluble E-...

The aim of our study was to assess the effectiveness of radioiodine therapy (RIT) on the achievement of euthyroidism and reduction of thyroid volume, in patients with toxic nodular goitre (TNG).Material and methods: During the last 7 years, we treated 3800 patients with TNG, aged 30-70 years; 82% female and 18% male; 2200 patients with multinodular goitre (MNG) and 1600 with autonomous toxic nodule (ATN); thyroid volume ranged between 16 and 130 ml (30% ...

Anorexia nervosa (AN) is an eating disorder, resulting in sustained low weight. In AN, similarly to syndromes of lipodystrophy, one observes the significant loss of the adipose tissue. In lipodystrophies, despite the lack of subcutaneous adipose tissue, insulin resistance is observed. Adipose tissue is known as a source of a variety of bioactive peptides, known as adipocytokines. The aim of the present study was to examine the plasma concentration of adipocytokines in relation...

Visfatin is a newly discovered protein secreted by adipose tissue, which is suggested to play a role in pathogenesis of insulin resistance. Polycystic ovary syndrome (PCOS) is heterogeneous disorder, where insulin resistance might be involved in the development of endocrine and metabolic abnormalities. The aim of the present study was to asses the relation between serum visfatin and insulin sensitivity and markers of hyperandrogenism in a lean and obese PCOS patients. The stud...

The pathogenesis of insulin resistance is not completely understood, however, there are data that it might be associated with altered tissue carbohydrate and lipid oxidation. Adiponectin may be a key regulator of insulin sensitivity and energy metabolism. The aim of the present study was to determine the association of adiponectin, glucose metabolism (oxidation and storage) and lipid oxidation by applying the euglycemic clamp technique and indirect calorimetry.<p class="ab...

A higher incidence of nodular goitre and less differentiated types of thyroid carcinoma have been observed in iodine deficient regions. North-Eastern Poland was an area with a moderate deficiency of iodine until the introduction of the mandatory salt iodination in 1997 (30±10 mg KJ/kg NaCl). The aim of our study was to compare the incidence of goitre, thyroid carcinoma and urine excretion of iodine in the inhabitants of the North-Eastern Region of Poland in 1997 and 2005....

Background: Irisin is an adipokine/myokine which could be connected with insulin sensitivity. Polycystic ovary syndrome (PCOS) is characterized by oligo- or anovulation, polycystic ovary, hyperandrogenism and insulin resistance.Objective: The aim of the present study was to determine the relationship between serum irisin concentration and insulin sensitivity (Mffm) as well as the effect of insulin infusion on circulating irisin levels in PCOS ...

The exact mechanism of the development of T2DM is still unclear, however, it is known that important role is played by both environmental and genetic factors. In this study we focused on describing the interactions between environmental and genetic factors and answering the question whether physical activity can modify the impact of the genes on the incidence of T2DM. We recruited 921 subjects (median age: 38 years; 49.7% man; mean BMI: 28.1) from the cohort 1000 Polish Longit...