Endocrine Abstracts

Introduction: The mixed tumor which secretes an excess of both GH and TSH causing acromegaly and hyperthyroidism is rare. The main problem is the late diagnosis, especially in men, even 10 years after the occurrence of the first symptoms.Case report: A 53-year-old men, was admitted to the our department, with complaints of excessive sweating and enlargement of the hands. His medical history included arterial hypertension. Past medical history revealed th...

Introduction: Polycystic ovary syndrome (PCOS) is characterized by menstrual disorders, hyperandrogenism and polycystic ovaries on ultrasonography. This hormonal disorder is also strongly associated with insulin resistance. The diagnosis of PCOS can be established after the exclusion of other causes of mentioned symptoms, such as non-classic congenital adrenal hyperplasia (NCAH). To date, several studies suggest the increased serum concentration of 17-hydroxyprogesterone (17-O...

Iatrogenic Cushing syndrome caused by the use of steroid medications is common because of the widespread use of these medications for the treatment of many diseases, however development of Cushing syndrome from the topical corticosteroids is very rare in adults.A 45-year-old men (BMI: 44 kg/m2), with a history of psoriasis, developed manifestations of Cushing syndrome, which included weight gain, central obesity, moon face, facial plethora, bu...

The accumulated data underline the role of betatrophin in glucose homeostasis. Polycystic ovary syndrome (PCOS) is characterized by insulin resistance and high risk of developing prediabetes and diabetes. The aim of our study was to investigate the relationship of serum betatrophin concentrations with indirect indices of insulin resistance and insulin secretion in women with PCOS, comparing to the control group. The study group comprised 43 women with PCOS and 16 controls matc...

Introduction: The pleiotropic effects of vitamin D extend to control many physiological and pathophysiological processes in the human body. One of them is involved in the protective process of the nerve cells during stroke as well as pathogenesis of type 2 diabetes. Serum 25-hydroxyvitamin D concentration <20 ng/ml indicating vitamin D deficiency which is common in Poland. The aim of this study was to estimate serum level of 25-hydroxyvitamin D in acute ischemic strokes&#1...

Objective: It has been shown that women with PCOS as well as with autoimmune thyroiditis (AIT), are characterized by increased incidence of infertility. Serum anti-Müllerian hormone (AMH), which reflects ovarian reserve, is elevated in PCOS women and is decreased in women with AIT. The Rotterdam criteria recognize four clinical PCOS phenotypes,i.e.,phenotype Acharacterized by clinical and/or biochemical hyperandrogenism (HA), menstrual dysfunction (oligo/amenorrhea) (Olig...

Introduction: Adiponectin is an adipocytokine with insulin-sensitizing and anti-inflammatory properties. In skeletal muscle, it increases fatty acid oxidation and insulin-stimulated glucose uptake through binding with adiponectin receptor 1 (AdipoR1). The aim of our study was to assess the effect of insulin and Intralipid/heparin infusions on muscle AdipoR1 expression in humans.Methods: Twenty healthy male subjects (age 25.2±3.2 years; BMI, 26.5&#17...

Insulin resistance and type 2 diabetes are associated with an increased risk of neurodegenerative diseases. Brain-derived neurotrophic factor (BDNF) regulates neuronal differentiation and synaptic plasticity and its decreased levels are supposed to play a role in the pathogenesis of Alzheimer disease and other disorders. Decreased circulating BDNF levels in obesity and type 2 diabetes were reported, however, it is unclear, whether BDNF might be associated with insulin resistan...

Visfatin, a protein secreted by the adipose tissue, might regulate insulin action. The aim of the present study was to assess serum visfatin concentration in obese women with normal glucose tolerance (NGT) and impaired glucose tolerance (IGT) and to estimate the relationships between serum visfatin concentration and insulin sensitivity, blood pressure, proinflammatory and proatherogenic factors.The study group consisted of 134 women: 30 overweight or obe...

One of the key actions of insulin is the regulation of glucose and lipid oxidation. Disturbances in substrate oxidation play an important role in the development of insulin resistance. Insulin action is inversely associated with circulating pro-inflammatory cytokines such as soluble TNF-α receptors (sTNFR1 and sTNFR2).The aim of the present study was to analyze the associations between serum sTNFR1 and sTNFR2 concentrations and glucose and lipid oxi...