ESPE Abstracts

Background: While differences in gut microbiota between obese and lean subjects have been described, few studies have examined how adiposity across childhood relates to intestinal microbiota composition and diversity in late adolescence.Objective: To explore the correlations between measures of adiposity from childhood and adolescence with intestinal microbiota composition and diversity at 15–17 years.Methods: Data stem from t...

Background: Dietary intake has been shown to influence the composition and diversity of the gut microbiota in adults, however its impact in childhood and adolescence remains uncertain. Moreover, the impact of other lifestyle behaviors such as physical activity, sedentary behaviors, sleep and fitness on the gut microbiota has rarely been investigated.Objective: To explore the correlations between intestinal microbiota composition and meas...

Recent data pertaining to the bio-psychosocial development of the adolescent, particularly from a neurobiological perspective, indicate that both at the level of individual care and of preventive strategies, the concepts, languages and strategies used should be adapted to the maturity of the adolescents. Moreover, since around thirty years under the era of AIDS, the medical scientific literature tackling the issue of adolescent sexuality and sexual behavior has sadly focused e...

Introduction: Klinefelter syndrome (KS) is the most common sex-chromosome disorder and cause of infertility and hypogonadism in males. However, KS remains an underdiagnosed condition with the majority of expected cases escaping clinical diagnosis and follow-up. Generally, the mid-puberty endocrine profile associated with KS is characterized by elevated levels of gonadotropins due to diminished testosterone feedback.Objective:</st...

Background: Emerging evidence suggests a link between the intestinal microbiota and cardiometabolic outcomes in both children and adults. The oral microbiota is less studied, and the association between the oral microbiota and cardiometabolic health in childhood remains largely unknown.Objective: To explore the associations between oral microbiota diversity measured at 8-10 yr and cardiometabolic health in childhood and ...

Background: Oral microbiota composition and diversity differ between obese and non-obese individuals. However, the associations between lifestyle habits (implicated in the pathogenesis of obesity) and the oral microbiota remain uncertain, particularly among children.Objective: To explore the associations between oral microbiota diversity and lifestyle habits among 8-10 year-old children.Met...

Isolated hypoaldosteronism is a rare cause of salt wasting in infancy and may be life-threatening, especially in the newborn. Isolated aldosterone deficiency results from loss of activity of aldosterone synthase encoded by CYP 11B2 gene. We reported the case of a newborn, who presented at the age of 4 weeks with severe dehydration, vomiting and hypotonia. Blood investigations showed severe hyponatremia, hyperkaliemia and metabolic acidosis. The familial history revealed a firs...

Background: Recent research has demonstrated earlier testicular and pubertal development in Western boys. New ultrasound-based references of testicular growth in Norwegian boys are now available. Population specific references for FSH, LH and sex steroid hormones have not been previously available in Norwegian children and adolescents.Objective and hypotheses: We aimed to provide an elaborate description of pubertal development in a sample of contemporar...

Liquid chromatography associated with tandem mass spectrometry (LC-MS/MS) is currently considered the gold standard for steroid measurement. The aim of this study was to compare traditional immunoassay and LC-MS/MS methods for androgens measurement before and after human recombinant chorionic gonadotrophin (hrCG) stimulation in children with diagnosis of disorder of sex development (DSD) with 46,XY karyotype and past of normal testosterone secretion. We evaluated 19 patients, ...

Background: DMRT transcription factors are highly conserved regulators of metazoan sexual development. The role of DMRT1 in human primary sex-determination is unclear. Chromosome 9p deletions that remove one copy of DMRT1 are associated with 46,XY feminization and gonadal dysgenesis. While they suggest that DMRT1 is haploinsufficient for testicular development, these deletions usually remove other genes, including DMRT2 and DMRT3. Also, most 9p deletions cause incomplete gonad...