ESPE Abstracts

Background: Partial gonadal dysgenesis with a 46,XY karyotype (46,XY PGD) is a disorder of sex development (DSD) associated with abnormal development of the gonads. It is characterized by abnormally developed external genitalia with or without Mullerian structures. The degree of abnormality varies from a female phenotype with clitoral hyperplasia to a male phenotype with isolated hypospadias. The incidence is unknown. In 20-30% of patients, gonadoblastoma or i...

Background: In the past decades Brazil has experienced a nutritional transition process characterised by a significant reduction in malnutrition and progressive increase in overweight and obesity. Nutritional education and precocious interventions are useful strategies to combat excess weight in childhood and adolescence. According to the World Health Organization (WHO), there were more than 40 million children overweight in the world in 2011. In Brazil, the prevalence of exce...

Background: Severe GH deficiency (GHD) is associated with significant body composition abnormalities. However there is no data assessing initial body composition parameters in the children with partial GHD.Objective and hypotheses: Study objective was initial body composition assessment in the short stature children diagnosed for GHD.Method: 54 consecutively diagnosed for GHD short statured children (40 boys) in the mean age 10.83&...

Background: Central precocious puberty (CPP) results from activation of the hypothalamic-pituitary-gonadal axis before the age of 8 years in girls and 9 years in boys. The molecular basis of the maturation of this axis is still poorly understood. The MRKN3 gene located in the Prader-Willi syndrome critical region (chromosome 15q11–q13), inhibit factors stimulating pulsative. GnRH secretion. In 2013 inactivating mutations in the MRKN3 gene were discovered...

Congenital Hyperinsulinism (CHI) is primarily associated with defects in the regulated release of insulin from ß-cells but little information is available about the role of other islet cell types. Pancreatic polypeptide (PP) cells represent a minor component of the islet endocrine cell population. PP causes satiety, decreases gastrointestinal tract motility and suppresses glucagon release. Since CHI is associated with feeding problems and loss of glucagon-mediated counter...

Background: GH secretion is classically assessed by provocative tests and, indirectly, by IGF-1 serum levels. However, their diagnostic accuracy is low. The aim of the study was to evaluate the adult height (AH) in short patients with IGF-1 ≤-1,5 SDS.Method: 52 short patients (height-SDS -2.6 (-3.1- -2.3), age 12.2 (10.2-13.7) y, 36 boys), with low height velocity(HV)-SDS (-1.6 (-3.2- -0.9)) and IGF-1 ≤-1,5 SDS (-2...

Background: It is well known that GH deficiency (GHD) in adulthood is associated with detrimental cardiovascular (CV) effects. Although data are controversial, adolescents with childhood-onset GHD (COGHD) and reconfirmed GHD may have increased metabolic risk after GH treatment withdrawal at final height (FH).Aim: Aim of our study is to compare growth response and metabolic profile in idiopathic COGHD adolescents with rec...

Background: Several studies have investigated the effects of GH replacement therapy (GHRT) on thyroid function in children with GH deficiency (GHD) leading to contrasting results. Indeed, GHRT has been reported to affect the peripheral metabolism of thyroid hormones, to alter TSH secretion by pituitary and to unmask secondary hypothyroidism.Objective and hypotheses: To evaluate long-term effects of GHRT on thyroid function in a large cohort of GHD childr...

Background: GH deficiency (GHD) in adults has been consistently associated with increased adiposity and decreased lean mass. Data in childhood are still scanty and the most appropriate tools to assess body composition in these children remain to be established.Objective and hypotheses: To evaluate the effects of GHD and GH replacement therapy (GHRT) on body composition in GHD children and make a comparison between DXA and anthropometric measures in evalu...

Background: Mutations in the 17β-hydroxysteroid dehydrogenase (17βHSD 3) result in 46,XY disorder of sex development (DSD). Biochemical hallmark of 17βHSD 3 deficiency is a Testosterone/Androstenedione ratio (T/A ratio) <0.8. 17βHSD 3 mutations have been associated with a wide spectrum of phenotypes, ranging from under-virilized male to a female appearance of genitalia at birth. Indeed, 17βHSD 3 deficiency in prepubertal patients is often clinicall...