Endocrine Abstracts

Introduction: Adequate iodine intake is important in pregnant women.Objective: To determinate iodine status and thyroid volumen (TV) in healthy pregnant women from Navarra (Spain), and to evaluate possible influence of diet.Methods: A cross-sectional study of 144 women in the first trimester of pregnancy (single pregnancies) was carried during 2014. We measured thyroid-stimulating hormone (TSH), free thyroxine (fT4) and antithyroid...

Objectives: The fetus is dependent on maternal thyroid hormones during pregnancy and an adequate thyroid function during pregnancy is essential for the normal brain development. The effects of subclinical hypothyroidism during pregnancy are poorly known. The present study assesses the association between thyroid hormones and thyrotropin in healthy pregnant women from the general population, and the neurodevelopment of their children at the age of 14 months.<p class="abstex...

Serum thyroglobulin (Tg) is a biomarker used to assess iodine nutrition status, but data in pregnant women are scarce.Objectives: To determine serum Tg concentration in Spanish healthy pregnant women, and to evaluate its relation with yoduria (UIC), thyroid volume, iodine intake and thyroid function throughout pregnancy.Methods: Longitudinal study in pregnant women with no history of thyroid disease, recruited in 2 obstetric center...

Evidence on whether neonatal thyroid screening results are dependent on maternal thyroid function is limited.Objectives: To study the relationship between iodine status and maternal thyroid function in pregnancy, and neonatal screening results in a Northern Spanish population.Methods: Prospective, longitudinal study of 297 pregnant women recruited in 2 obstetric centers of Pamplona (Spain) at the first antenatal visit, and their ne...

Objective: An adequate thyroid function during pregnancy is essential for the normal brain development of the foetus, and some organochlorine compounds (OCs) can interfere with the thyroid system. The objective of the present study was to evaluate the association between exposure to some OCs and thyroid function in pregnant women from two different areas in Spain, as well as to investigate the potential confounding effect of iodine intake.Methods: Thyroi...

Introduction: The fetus is the most vulnerable to severe iodine deficiency and hypothyroidism during pregnancy. Severe iodine deficiency and hypothyroidism during pregnancy have long been known to be associated with neurologic deficits and mental retardation The effects of mild iodine deficiency and subclinical hypothyroidism are poorly known. The present study assesses the association between thyroid hormones and urinary iodine concentration (UIC) in healthy pregnant women an...

Introduction: Optimization of iodine intake aims to prevent the irreversible damage that iodine deficiency (ID) can cause in the central nervous system during its development, as well as thyroid disorders that can be induced by both ID and excessive micronutrient intake. The Spanish legal regulation stipulates that iodized salt (IS) must contain 60 mg of iodine per kg of salt (60 ppm), allowing a tolerance of ±15%. The aim of this study is to address the iodine content of...

BackgroundIodine is an essential nutrient necessary for the synthesis of thyroid hormones. Humans need a daily intake of 90–250 µg per day. The WHO criteria on the adequate iodine intake in the general population is: median iodine 100–199 µg/l, levels <100 µg/l in <50% of the population; <50 µg/l in <20% of the population and iodized salt consumption in >90% of households.Objectives...