ESPE Abstracts

Background: Attention Deficit Hyperactivity Disorder (ADHD) is the most prevalent chronic behavioral disorder among children. No definite pathology is yet defined for this disorder and findings are in favor of multifactorial hypothesis.Aims: This study was performed with the aim of determining the association between vitamin D serum levels and ADHD among 6-14 year-old children referring to Imam Khomeini Hospital Complex during 2014–2015 in Tehran, I...

Background: Some studies suggested a correlation between vitamin D (VD) and the GH-IGF1 but few studies, and with controversial results, have prospectively analysed the vitamin D status in children before and after GH treatment.Objective and hypothesis: To assess VD status in pre-pubertal children with idiopathic GH deficiency (GHD); and to evaluate effect of GHD and GH treatment on VD levels.Methods: 50 pre-pubertal children with ...

Background: Hereditary vitamin D resistant rickets (HVDRR) or vitamin-D dependent rickets type II is an autosomal recessive disorder caused by mutations in the vitamin D receptor (VDR) gene, causing end-organ resistance to the action of 1,25-dihydroxyvitamin D (calcitriol), thus resulting in the distinct characteristics of early-onset rickets, hypocalcemia, and secondary hyperparathyroidism. The currently accepted treatment modality is bypassing the affected r...

Background: The relationship between 25 hydroxy cholecalciferol (25OHD) deficiency and autoimmune diseases including type I diabetes (T1D) is an ongoing area of research interest. Furthermore, vitamin D seems to affect β cells through calcium regulation, as insulin release is a calcium-dependent process. The aim of the study was to screen for (25OHD) deficiency in children with clinical onset of T1D and study the correlation between its serum levels an...

Background: Congenital hyperinsulinism (CHI) is a rare disorder, which causes persistent and severe hypoglycaemia in infants and children. CHI can be treated with glucagon, but long-term use is challenging owing to its instability in aqueous solution. Dasiglucagon, a stable glucagon analogue designed for long-term use as a subcutaneous continuous infusion, is in clinical development. Here, we present dasiglucagon safety results in participants treated for up t...

Background: Previously we showed that pubertal children born small for gestational age (SGA) with a poor adult height (AH) expectation can benefit from treatment with GH 1 mg/m2 per day (~0.033 mg/kg per day) in combination with 2 years of GnRH analogue (GnRHa) and even more so with a double GH dose. GnRHa treatment is thought to have negative effects on body composition and blood pressure. Long-term effects and GH-dose effects on metabolic health in children treate...

Background: Vitamin D Dependent Rickets Type IA (VDDR-IA) is the most common type of VDDR and caused by mutations in CYP27B1. Here, we aimed to analyze the genotypic and phenotypic features of our VDDR-IA patients.Materials and Methods: The patients with a clinical diagnosis of VDDR-IA were enrolled and analyzed for CYP27B1 gene mutations.Results: 12 (5 males) pat...

Background: Vitamin D may have cardio-protective properties due to its biological actions. In children, observational studies linking actual vitamin D level and blood pressure have yielded conflicting results. Whether early life vitamin D exposure may elicit a programming effect on later systolic blood pressure (SBP) and diastolic blood pressure (DBP) needs further investigation.Objective and hypotheses: We investigated whether higher levels of cord 25-h...

Background: Vitamin D dependent rickets type 1A (VDDR1A) is a rare disease caused by CYP27B1 mutations which encodes vitamin D 1α-hydoxylase.Objective and hypotheses: Vitamin D dependent rickets type 1A features of three Chinese cases with CYP27B1 mutations and report the experience of medication for severe hypocalcaemia.Method: Summarise their clinical features analyse the CYP27B1 and vitamin D receptor (VDDR) mutations.<...

Vitamin D dependent rickets type 1A (VDDR-IA) is inherited in an autosomal recessive pattern and caused by mutations in CYP27B1 gene encoding enzyme 1α-hydroxylase. Deficiency of 1α-hydroxylase leads to decrease of 1,25(OH)2 vitamin D production. VDDR-IA usually manifests clinically during the 1st year of life. Clinical features of VDDR- IA include progressive growth retardation, hypotonia, rachitic skeletal deformities, hypocalcemic seizures in early infancy. Serum ...