Endocrine Abstracts

Introduction: Determining TSH in the serum is a basic test for the diagnosis of thyroid function in the general population. Its regulation is based on feedback, however during pregnancy there are other mechanisms – mainly suppression of TSH due to a high hCG and the iodine saturation.Aim: Results of TSH, anti TPOAb and FT4 by ADVIA Centaur (Siemens) in our group of 7530 women living in iodine sufficient area in 9–11 week of pregnancy...

Introduction: Low-dose dexamethasone suppression test is used to screen for excess cortisol production (Cushing’s syndrome). It is recommended to use cut-off for suppression of serum cortisol (SC) < 50 nmol/l after 1 mg dexamehason suppression test (DST). Plasma dexamethasone levels are affected by many factors resulting in lower test specificity. Simultaneous analysis of dexamethasone and cortisol levels can improve diagnostic accuracy of DST. We used cut-off level o...

Introduction: Anti-C1q antibodies have been implicated in the pathogenesis of systemic lupus erythematosus. We have previously shown that anti-C1q antibodies are also linked to autoimmune thyroid disorders (AITD). The aim of this study was to assess the occurrence of anti-C1q antibodies in pregnant women with AITD.Methods: Serum anti-C1q antibodies were measured during the 9–11th gestational weeks in 103 pregnant women screened positive for AITD, an...

Introduction: Latent toxoplasmosis, a zoonosis caused by protozoan Toxoplasma gondii, is the most widespread human parasitosis in developed countries (prevalence 20–80%). Upon infection, T. gondii stays in human organism lifelong. It has been linked to several autoimmune diseases, including autoimmune thyroid disease (AITD). The aim of our study was to assess the impact of latent T. gondii infection on the prevalence of AITD in pregnancy with re...

Background: Early miscarriages are of multifactorial origin. Subclinical thyroid dysfunction belongs to the common causes. Thyroid dysfunction in pregnancy is caused mainly by thyroid autoimmunity and/or iodine deficiency. The Czech Republic belongs to countries with sufficient iodine intake. The aim of the study was to determine iodine status in women after early miscarriages (n=183) and to compare it with randomly chosen age-comparable euthyroid women without previo...

Background: Etiology of infertility and miscarriages is multifactorial. Negative impact of overt thyroid dysfunction on fertility, pregnancy and development of offspring is known. Moreover, even presence of euthyroid autoimmune thyroid diseases may increase risk of miscarriages. The prevalence of positive antibodies to thyroid peroxidase (TPOAb) ranges 9–39% in women with recurrent miscarriages and 0–37% in controls. The aim of the study was to compare serum concentr...

Introduction: Urinary iodine concentration (UIC) and neonatal thyroid stimulating hormone (neoTSH) concentrations can reflect changes in iodine status and serve as a sensitive marker of iodine intake in pregnancy. As gestational diabetes mellitus (GDM) requires some diet modification, the study aimed to map the situation of iodine intake in women with GDM compared to healthy pregnant women and explore a relationship to thyroid function.Methods: In the tw...

Introduction: Complement mannan-binding lectin (MBL) deficiency is associated with increased susceptibility to infections and autoimmune diseases. Previous studies suggested that the production of MBL is stimulated by thyroid hormones. The aim of our study was to investigate this association in patients with autoimmune thyroid diseases (AITD).Methods: Serum levels of MBL and parameters of the thyroid function were determined in 62 patients with Hashimoto...