Endocrine Abstracts

Diagnosis and management of infants and children with sex steroid disorders requires fast and simultaneous assessment of several sex steroid metabolites in serum at low concentrations and on small sample volumes. Therefore, we developed a sensitive and selective TurboFlow-LC-MS/MS method for quantification of DHEA, DHEAS, 17α-hydroxyprogesterone, Δ4-androstenedione and testosterone in serum from pre-pubertal children.Total run time was 10.75 mi...

Introduction: There is concern that unintended environmental exposures to numerous chemicals, including bisphenol A (BPA), triclosan (TCS) and benzophenone-3 (BP-3), all of which can be detected in serum and urine, may have adverse endocrine effects on human reproduction. Less is known about the concentrations of these chemicals in other body fluids. Here we present data, which show that these three chemicals can also be present in seminal fluid of young men.<p class="abst...

Introduction: Phthalates are suspected to influence thyroid function in epidemiologic and experimental animal studies. The aim of the study was to investigate the ability of primary human thyroid cell cultures to metabolise phthalates and a possible concentration-dependent response of phthalates on thyroglobulin (Tg) secretion.Methods: Human thyrocytes obtained from thyroidectomies were cultured to confluent monolayers. These were exposed to DEHP in conc...

Background: Little is known about the possible deleterious effects of phthalate exposure on endogenous sex steroid levels in childrenDesign: A longitudinal study.Materials and methods: 168 Healthy children (84 girls) were examined every 6 months for 5 years, with pubertal staging, measurements of serum levels of DHEAS and Δ4-androstenedione (Adione) and repetitive longitudinal morning urinary measurements of 14 phthalate metab...