Endocrine Abstracts

Polycystic ovary syndrome (PCOS), which affects 7% of the female population, is associated with established cardiovascular risk factors including obesity, dyslipidaemia and insulin resistance. Thrombus formation represents the final step in the atherothrombotic process and clot structure has been shown to predict the predisposition to cardiovascular events. The aim of the present work was to assess the effects of commonly used therapeutic agents on clot structure and fibrinoly...

Background: Recent studies have suggested that an increased level of serum IGF-1 and a decreased level of IGFBP-3 may be associated with an increased risk of developing subsequent breast cancer. However, it is uncertain whether these effects are mediated solely by endocrine actions or whether local effects might also be important. We have previously demonstrated IGF-1 mRNA to be universally expressed in normal breast tissue but in only 50% of cancers. The expression of IGFBP-3...

The incidence of macroprolactinemia decreased notably because of wide use of prolactin (PRL) assays measuring macroprolactin at a lower rate. However, in case of high PRL levels, measurement of monomeric PRL (mPRL) levels after polyethylene glycol (PEG) treatment is still required. Our aim was to determine – by the use of a second generation PRL assay – how total PRL (tPRL) levels in native sera of healthy blood donors change after PEG treatment. In women, the use of...

Growth hormone (GH) deficiency is associated with insulin insensitivity, abnormalities of endothelial function and increased cardiovascular mortality. Hyperhomocysteinaemia is also associated with impaired endothelial function, and it has been established as a risk factor for cardiovascular disease. GH treatment improves lipid profile and endothelial function, but it is not known whether it can affect homocysteine levels.Material & Methods: Twenty-t...

Background: Osteocalcin (Ost) is an osteoblast derived protein locally acting on bone formation. Ost could also have a role in regulation of glucose and fat metabolism. It has been shown that Ost can directly stimulate proliferation of β cells and have effect on secreting insulin, and can act on insulin sensitivity by cytokines. It was not fully investigated in gestational diabetes mellitus. The aim of our study was to investigate osteocalcin in Turkish gestational diabet...

Aim: In this study our aim was to investigate the relationship between obesity and vitamin D and hyperparathyroidism.Material and Method: 127 healthy persons included in this study. Study group were divided into four groups according to body mass index (BMI). Group 1 (n=35) BMI 18.5–24.9 kg/m2, Group 2 (n=35) BMI 25–29.9 kg/m2, Group 3 (n=35) BMI 3.0–34.9 kg/m2, Group 4 (n=22) BM...

Introduction: The incidence of Type 1 diabetes (T1D) is rising. The effect of increasing BMI in children has been proposed. A relationship between age of diagnosis of T1D and BMI SDS has been reported by some but not confirmed in all studies. We propose age of diagnosis and autoantibody status may be influenced by BMI and inherited factors relating to BMI and insulin resistance.Methods: BMI SDS was calculated in 230 children with newly diagnosed T1D, 4&#...

ObjectiveTo examine the relationship between leptin, adiponectin and insulin resistance in a group of men and women with varying degrees of glucose tolerance and obesity.Method69 participants were investigated and divided into four groups: 15 normal weight with normal glucose tolerance (NW NGT); 22 overweight with normal glucose tolerance (OW NGT); 15 overweight with impaired glucose tolerance (OW IGT); and 1...

Leptin is a crucial hormone in the regulation of body weight. It is produced by adipose tissue and acts centrally decreasing appetite and increasing energy expenditure. Leptin has been shown to stimulate sympathetic nervous system activity in vitro although the physiological relevance of this remains unclear. Increased sympathetic nervous system (SNS) activity has been implicated in the pathogenesis of insulin resistance and a greatly increased cardiovascular risk. We have the...

Introduction: Increased capacity for glucocorticoid regeneration in subcutaneous adipose tissue (SAT) by 11β-hydroxysteroid dehydrogenase-1 (11HSD1) is associated with obesity and associated risk factors. We hypothesised that down-regulation of SAT 11HSD1 and/or glucocorticoid receptor-α (GRα) may explain differences in body fat distribution and metabolic risk between black and white women. The study aimed to compare the expression of 11HSD1 and glucocorticoid r...