ESPE Abstracts

Background: Adults with CF show a higher rate of osteoporosis compared to healthy adults. Achieving proper bone mass is a process starting in childhood. We aimed to evaluate the prevalence of decreased bone mineral density (BMD), changes during puberty and risk factors for low BMD in children and adolescences with CF in a large Dutch cohort.Patients and methods: A retrospective observational cohort study was performed in...

Background: Cleidocranial dysplasia (CCD) is a very rare dominantly inherited autosomal bone disorder mainly characterized by hypoplasia or aplasia of clavicles, failure of cranial suture closure, dental anomalies, short stature, and other changes in skeletal patterning and growth. Heterozygous loss-of-function mutations cause the majority of the abnormalities in the run-related transcription factor 2 gene (RUNX2). This gene is located on chromosome 6p21 and i...

Background: Extracorporeal shock wave therapy (ESWT) is widely used in the clinic for non-union of fractures. However, effect of ESWT on longitudinal bone growth has not been well studied. We explored the in vitro and in vivo effects of low/high dose radial shock wave treatment (SWT) on growth plate (GP) cartilage. A positive or negative effect on growth could be harnessed for therapeutic growth modulation while no change establishes safety.<p class="abst...

Background: The influence of intrauterine life on long term health is supported by a wealth of epidemiological and experimental studies. A low oxygen and/or nutrient supply to the fetus, resulting in intrauterine growth restriction (IUGR), may affect gonadal development of the offspring, with a potential impact on fertility. Data derived from animal models of placental insufficiency are very limited.Objective and hypotheses: To investigate the effects of...

Background: Brown adipose tissue metabolism is of remarkable pathophysiological interest, because it could be a target for therapies for obesity and metabolic syndrome. Irisin (Ir), recently identified adipomyokine is essential in a white-to-brown fatty tissue transdifferentiation, and mediates some of the positive influences on metabolic disorders through increase of energy expenditure. The exact regulation of Ir secretion and action is unknown but positive associations of ci...

Objectives: To test whether Gabra5 in POMC neurons regulates energy balance and glucose metabolism in sexually dimorphic fashion.Methods: POMC-Cre mice received stereotaxic injections of AAV-FLEX-scCAS9 and AAV-FLEX-Gabra5-sgRNA-tdTOMATO into ARH to generate pomc-Gabra5 KO mice. Both male and female mice were fed on regular chow diet or HFD. Food intake, body weight and anal temperature were measured every 4 days. Fat/le...

Background: Childhood obesity is associated with non-alcoholic fatty liver disease (NAFLD). Previous studies in obese adult and pubertal children with NAFLD have shown that chronic inflammation/oxidative stress and insulin resistance might induce iron metabolism disorders, characterized by increased Hepcidin and Ferritin levels and decreased serum Iron levels. However, data evaluating these findings in a well selected population of obese prepubertal children are still missing....

Gestational Diabetes (GDM) increases risk of developing type 2 diabetes in the mother and child later in life however, despite the increasing prevalence of GDM, its molecular mechanism remains unknown. A recent Genome-Wide Association Study (GWAS) identified a unique genetic association of the novel 5th hexokinase, hexokinase domain component-1 (HKDC1) to gestational glucose tolerance at 28 weeks of gestation linking it to GDM. We have previously shown that liver-specific over...

Background: TRNT1 (CCA-adding transfer RNA nucleotidyl transferase) enzyme deficiency is a newly reported inborn error of metabolism caused by defective post-transcriptional modification of mitochondrial and cytosolic transfer RNAs (tRNAs). TRNT1 mutations cause a complex multisystem disease leading to manifestations in most organs. We here described the effect of growth hormone (GH) treatment on short stature in two siblings with TRNT1 deficiency.Case p...

Background: Sex differences in disease susceptibility might be explained by a sexual dimorphism in hypothalamic-pituitary-adrenal axis activity, which has been postulated to emerge during puberty. The aim of this study is to assess the contribution of pubertal development to sexual dimorphism in cortisol production and metabolism.Methods: Participants, born between 1995 and 1996, were enrolled from the population-based N...