ESPE Abstracts

Paternally inherited mutations in the DLK1 (delta-like non-canonical Notch ligand 1) gene cause central precocious puberty (CPP) with a metabolic phenotype, suggesting that DLK1 (Delta-like 1 homolog/Preadipocyte factor 1) may link pubertal timing with body composition. However, little is known about circulating DKL1 in normal and precocious puberty.Objective: To evaluate longitudinal changes in circulating DLK1 concentrations i...

Background: The average age at pubertal onset is declining worldwide which has received a lot of scientific and public attention. This secular trend is accompanied by an increasing number of children diagnosed with precocious puberty in many countries worldwide. However, there is less focus on the secular changes in the upper and lower boundaries (+/- 2 standard deviation (SD)) for pubertal onset and very little is known about whether a secular trend in the in...

Background and Aim: Despite the broad individual variation of pubertal maturation, references traditionally describe growth in relation to just chronological age and not biological age. Hence, growth references for the adolescent period have been of limited usefulness for monitoring individual growth in clinic and for research. Especially for children and adolescents with chronic diseases is there a need to better evaluate if changes in SD-scores just before a...

Background: Presence of current acne is well described in adolescents and adults with altered sex steroid levels, e.g., in polycystic ovarian syndrome, androgen producing tumors and misuse of anabolic androgenic substances. However, less is known about the impact of physiological concentrations of testosterone and dihydrotestosterone (DHT) quantified by gold standard LC-MS/MS methodologies on the development of acne in healthy adolescent boys and girls.<p ...

Introduction: Management of children with adrenal disorders such as congenital adrenal hyperplasia involves thorough clinical monitoring, including measurements of plasma renin concentrations (PRC) and ACTH. However, sex- and age-related reference intervals (RIs) for PRC and ACTH using novel immunoassays are needed.Aim: To evaluate circulating concentrations of renin and ACTH in children and adolescents from the general ...

Introduction: The pubertal transition is accompanied by voice break in boys. Studies asking men to retrospectively recall their age at voice break report an average age of voice break corresponding to 13.4-14.0 years. However, it may be difficult to remember precisely when your voice broke, and recall bias is quite large. Little is known about voice frequency in boys and girls in relation to pubertal timing.Aim: To asses...