ESPE Abstracts

Background: National and international guidelines recommend thyrotropin (TSH) determination as the most sensitive test for detecting primary congenital hypothyroidism (CH) in newborn screening programs. A strategy of a second screening at 2 weeks of age, or 2 weeks after the first screening was carried out, is also recommended in preterm, LBW and VLBW neonates, twins, neonates admitted in NICU, and babies with specimen collection within the first 24 hours of life [1–3]. H...

Background: Klinefelter syndrome (KS) has long-term consequences on bone health. However, studies regarding bone status and metabolism in childhood and adolescence are very rare.Objective and hypotheses: The purpose of our study was to evaluate bone status and metabolism in a cohort of KS children and adolescents.Method: This cross-sectional study involves 40 (mean age 13.7±3.8 years) KS children and adolescents and 80 age-mat...

Background: α-klotho is a transmembrane protein which can be cleaved and act as a circulating hormone. Since low α-klotho levels were found in organic GH deficiency (GHD) and high levels in acromegaly, an interaction between α-klotho, GH and linear growth has been suggested.Objective and hypotheses: We investigated the role of α-klotho protein as a reliable marker of GH secretion in short children and the factors influencing its secre...

Background: The initial L-T4 dose currently recommended in the treatment of congenital hypothyroidism (CH) is 10–15 mcg/kg per day.Objective and hypotheses: We designed a multicenter randomized trial to evaluate the effects of different starting doses of L-T4 within the range 10–15 mcg/kg per day on neurocognitive development in children with CH.Method: Seventy-two children with CH diagnosed by neonatal screening were enr...

Background: Leprechaunism, also known as Donohue syndrome, is due to a severe congenital insulin-resistance, with prenatal and neonatal growth retardation, typical dysmorphic features, glycaemic dysregulation with hyperinsulinism and hyperandrogenism.Objective and hypotheses: These patients have a poor prognosis with death in the first year of life.Method: We report the case of a newborn (35.4 weeks) with severe fetal growth restri...

Background: In Brazil there is a nutritional transition between child malnutrition and increasing prevalence of obesity.Objective and hypotheses: The study aims to identify the prevalence of overweight and obesity in children aged 5–18 years in five private and 15 public schools from city of Uberaba Brazil.Method: Anthropometric data, inventorys physical activities and socioeconomic aspects were evaluated from 1125 individuals...

Background: Many studies have shown that GH therapy can increase final height in children born SGA. Adult height and growth velocity can be improved in these subjects even if there is not a deficiency of endogenous GH (GHD).Objective and hypotheses: We aimed to analyze growth response after 1 year of GH treatment in children born SGA without GH deficiency.Method: Ten patients (six M, four F) born SGA (according to Gagliardi et ...

Background: The beginning and evolution of physiological puberty may be occurring earlier, resulting in change in the age at which clinical investigation on precocious puberty must be conducted, as well as concerns regarding the possible deleterious effects of hormone exposure in a later stage of life.Objective and hypotheses: Assess age of beginning and evolution of puberty in boys and girls acknowledging the age of thelarche (T), menarche (M), period b...

Background: Over the years special screening procedures for preterm and twin babies (re-screening at 2–4 weeks of life) have been adopted by many screening laboratories worldwide. However, no extensive studies have been performed to verify how many co-twins with negative test at first screening (3–5 days) become positive at re-screening, and the utility of a long-term follow-up also in co-twin with negative test at screening and re-screening.Ob...

Background: X-linked hypophosphatemic rickets (XLH) is caused by inactivating mutations in the phosphate-regulating gene with homologies to endopeptidases on the X chromosome (PHEX). In this group of patients, data about renal calcifying disorders are scarce.Objective and hypotheses: To determine the prevalence of nephrocalcinosis and nephrolithiasis and their risk factors in XLH patients.Method: 36 patients (15 children a...