Endocrine Abstracts

Objective: To determine the prevalence of polycystic ovary syndrome (PCOS) and hyperandrogenism and their relationships with metabolic syndrome (MS) parameters in female-to-male transsexuals (FMT).Design and methods: Seventy-seven FMT were assessed clinically and biochemically to hyperandrogenism, before the beginning of the treatment with testosterone. We also assessed cardiovascular risk factors and other parameters of MS.Results...

Background: Endothelial dysfunction may have deleterious effect cardiovascular pathology in diabetic patients.Atrial natriuretic peptide (ANP) exerts beneficial effects on the cardiovascular system in part by exerting antioxidant activity. Recently it was reported that ANP is able to exert an antihypertrophic effect in myocitos at least in part due to inhibition of NADPH oxidase and superoxido generation.It seems that hyperglucemia...

Introduction: The syndrome of late-onset hypogonadism (LOH) is a clinical and biochemical syndrome associated with advancing age male, characterized by typical symptoms and decreased serum concentrations of testosterone, which can affect multiple organ systems and may impair quality of life. The prevalence of LOH syndrome is higher in certain patient groups, obese, diabetic and suffering from erectile dysfunction manifest LOH at higher rates than the general population.<p ...

Introduction: During a normal menstrual cycle, serum levels of luteinizing hormone (LH), follicle-stimulating hormone (FSH), estradiol (E2), and progesterone (P4) can vary widely between cycles for the same woman, as well as between different women. Reliable reference values based on the local population are important for correct interpretation of laboratory results.Aims: To evaluate the discrepancy of the results on fertility hormones by two different t...

Androgen deficiency in the aging male has become an actual topic due to the aging population and finding from different studies that shown a progressive decline of serum levels of age-related testosterone. These levels have been inversely related with markers of metabolic syndrome and cardiovascular disease.The aim of this observational study was to investigate the relation of endogenous testosterone and other sex hormones with different components of me...

Introduction: Different studies have published that testosterone therapy in men and women results in decreased HDL cholesterol and increased LDL cholesterol, and therefore an increased cardiovascular risk.Aims: To determine whether testosterone therapy has this effect on lipid parameters and markers of metabolic syndrome (MetSyn) in female-to-male transsexuals (FMT).Material and methods: We studied 50 FMT, aged 27.8±7.6 years,...

Aim: To assess ET1 levels in diabetic patients with and without microangiopathy, and compared with normal subjects, nondiabetic, without underlying vascular pathology.Introduction: The pathophysiology of diabetic microangiopathy is complex and many important aspects of it still are not fully understood. Endothelial dysfunction is of major importance in the pathogenesis of atherosclerosis and diabetic angiopathy. ET-1 is one of the most potent vasoconstri...

Moderately elevated body iron stores may be associated with several components of the metabolic syndrome (MetSyn). Elevated serum ferritin levels (Fer) independently predicted incident type 2 diabetes in prospective studies in apparently healthy men and women.Aims: To analyze the association between Fer and components of MetSyn in transsexuals before and after 2-year cross-sex treatment (CST).Methods: Before starting the CST in 90 ...

Elevated serum ferritin levels has been reported in premenopausal women presenting polycystic ovary syndrome (PCOS) and hyperandrogenism, and thus may be involved in the development of insulin resistance, type 2 diabetes y cardiovascular disease. In female-to-male transsexuals (FMTs) PCOS is frequent and this issue has been little studied.Aims: To study the serum ferritin in FMTs with PCOS and their relations with markers of insulin resistance (IR) and m...