ESPE Abstracts

Background: Heterozygous inactivating mutations in the calcium sensing receptor (CaSR) gene cause mild hypercalcemia, normal to slightly elevated parathormone (PTH) levels and may vary from an asymptomatic clinical picture to a mild course. This clinical picture is also called familial hypercalcemic hypocalciuria. In this study, it is aimed to present two sibling cases due to CaSR mutation with interesting features.Case...

Background: Osteogenesis imperfecta type XVII (OI17) (MIM#182120) have been described recently due to mutation in secreted protein, acidic, cysteine-rich (SPARC) gene located on 5q33.1.Objective and hypotheses: Here we report a novel mutation in SPARC causing OI17.Case: Two siblings presented to our clinic at the age of 10.3 and 0.5 years old. Parents were consanguineous. The older one was born with birth weight &...

Background: Osteogenesis imperfecta (OI) is a heterogeneous group of brittle bone disease mostly caused by quantative or qualitative defects in type I collagen. In most populations, more than 90% of the patients with OI have dominant mutations in COL1A1 or COL1A2 genes (AD-OI). Less than 10% of the cases have recessive inheritance (AR-OI). Currently 12 genes have been identified as a cause of AR-OI.Objective and hypotheses: We assumed h...

Background: Short stature (SS) is one of the most frequent reasons for referral to pediatric endocrinology clinics.Objective and hypotheses: We aimed to analyse the etiological factors of SS, in patients of our clinic, who are referred from general paediatrics with high likelihood of endocrinological problems after primary screening.Method: 1519 patients (693F) with height <3% were included. Clinical, anthropometric, radiologic...

Background: Hereditary vitamin D-resistant rickets (HVDRR) is a rare disease caused by mutations in vitamin d receptor (VDR). Patients with HVDRR are usually treated with intravenous calcium (i.v.-Ca) therapy via a central catheter. However, central catheter-related complications can cause important morbidity. In this report, we described four patients with HVDRR from different families. In three of these cases we used a novel therapeutic regime of intermittent IV-Ca ...

Background: Deficiency of one or more pituitary hormones, often with growth hormone (GH) deficiency, is defined as multiple pituitary hormone deficiencies (MPHD) or congenital hypopituitarism (CH). CH cases are mostly sporadic and have a prevalence of 1/3000-4000 live births. There are many known and yet unknown molecular pathways explaining the complex structure and functions of the pituitary gland. Many different gross and small sequence variants in the gene...

Introduction: 5-Hydroxymethylfurfural (HMF) is formed when sugars like glucose and fructose are heated in the presence of amino acids. HMF is naturally present in many foods and we are exposed to HMF in daily life. There are conflicting data on potential genotoxic, mutagenic, carcinogenic, DNA-damaging, organotoxic and enzyme inhibitory effects of HMF and its metabolites. We aimed to investigate toxic effects of HMF on reproductive system in peripubertal rats....

Background: In adult studies, serum uric acid level (SUA) has been shown to be associated with cardiometabolic anomalies of metabolic syndrome such as insulin resistance, hypertension, increased carotid intima thickness, and hyperuricemia is considered as an independent risk factor for atherosclerosis and cardiovascular disease. Early cardiovascular changes in obese children and studies on the relationship between metabolic syndrome and hyperuricemia are quite...

Background/aims: AMH levels of mini puberty are higher than prepubertal period. In this study we investigated AMH levels in infants with premature thelarche who are presumed to have exaggerated mini puberty due to inadequate/late suppression of pubertal activation.Methods: Fifty five female infants between 3 months and 3 years of age with premature thelarche were enrolled in the study and 49 healthy girls in the same age group were included in the study....

Background: Inactivating mutations in the calcium sensing receptor (CASR) may result in disorders of calcium homeostasis manifesting as familial benign hypocalciuric hypercalcemia (FBHH) and neonatal severe hyperparathyroidsm (NSHPT).Objective and hypotheses: We report two cases with NSHPT together with their treatment and long-term follow-up.Method: Two cases were referred with severe hypercalcemia in the neonatal period....