ESPE Abstracts

Background: Despite a shining sun all through the year, vitamin D deficiency is still prevalent in Egyptian children which suggests a relative resistance to vitamin D in Egyptian population.Aim: To assess 25(OH)D status in healthy pre-pubertal Egyptian children and to relate its levels to anthropometric parameters in these children.Methods: Sixty healthy children aged between 3 and 10 years coming to the Outpatient clinic, Children...

Background: Fibroblast growth factor 23 (FGF23) decreases renal phosphate reabsorption and serum 1,25-dihydroxyvitamin D [1,25(OH)2D] levels. X-linked hypophosphatemic rickets (XLH) is caused by mutations in the PHEX gene and accompanied by decreased serum inorganic phosphate (IP) and elevated serum FGF23 levels. Patients with XLH are generally treated with oral active vitamin D and phosphate, but some previous reports indicated that serum FGF23 levels increased with ...

Introduction: Several studies showing a high prevalence of vitamin D deficiency in pregnant women have been published in recent years. Vitamin D deficiency during pregnancy has been related to adverse events both in mother and child. Plasma 25-OH vitamin D (25(OH)D) levels in the newborn are dependent on maternal deposits and show a close correlation with maternal levels; thus, neonates of vitamin D-deficient mothers present a greater risk of hypocalcaemia, rickets and a highe...

Background: Adequate vitamin D level is essential for optimal child’s growth. Small for Gestational Age (SGA) is a common cause of short stature in childhood. Being born SGA is associated with a risk of developing insulin resistance.Objective and hypotheses: The aim of the study was to evaluate serum vitamin D levels in short children born SGA and appropriate for gestational age (AGA) and to assess their relationship with insulin sensitivity.<p ...

Background: Hypophosphatemic rickets (HR) is most commonly X-linked or autosomal dominant, but autosomal recessive (AR) forms have been described. ARHR1 (DMP1) and ARHR2 (ENPP1) share identical biochemical characteristics of excessive renal phosphate wasting due to increased circulating levels of the phosphatonin FGF23 and low serum levels of 1,25(OH)2D. By contrast, in hereditary hypophosphatemic rickets with hypercalciuria (HHRH) phosphaturia is ...

Background: Many epidemiological studies have found high prevalence of vitamin D deficiency in children with type 1-diabetes mellitus (T1D). 1,25(OH)2D is a potent immune-modulator that also enhances the production and secretion of several hormones, including insulin. The association of low serum 1,25(OH)2D levels with high glucose level and diminished insulin sensitivity suggests that vitamin D may modulate insulin metabolism.Aim and objectives: To scre...

Background: Hypercalcaemia is caused by many different conditions. Vitamin D intoxication with severe hypercalcemia is rare in the neonatal and infancy period. Here we described a 4-month-old male with severe hypercalcemia secondary to taking oral 600 000 units of vitamin D. He was diagnosed vitamin D 24-hydroxylase gene (CYP24A1) mutation after evaluation.Case presentatıon: He was admitted to our hospital with high serum calcium level (23 mg/dl). S...

Objectives: Vitamin D deficiency is prevalent in pediatric population. Since low compliance may inhibit appropriate vitamin D supplementation in daily dosing regimen, intermittent high dose administration may be considered. We aimed to evaluate the efficacy and safety of monthly administration of oral cholecalciferol compared with daily dosing regimen in adolescents with vitamin D deficiency.Methods: This retrospective s...

In children and adolescents, vitamin D deficiency negatively affects muscle physiology, exposing them to increased muscle damage and pain, stress fractures, and tendon structures. In addition, free radicals released when the body is exposed to oxidative stress after exercise can cause DNA damage. Vitamin D plays an important role in removing these radicals. The purpose of this study is to investigate the relationship between physical activity and 25- OH vitamin D in obese chil...

Introduction: Mucopolysaccharidoses (MPS) are lysosomal storage diseases. The frequency of endocrinological problems such as osteoporosis and hypothyroidism among children with MPS is not known and there are limited studies. In this study, the clinical findings, bone health and other endocrine functions of patients with MPS diagnosis and access to current treatments were retrospectively evaluated.Materials and Methods:Th...