Barna Vásárhelyi

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OBJECTIVE Recent data have indicated the significance of vitamin D receptor (VDR) polymorphisms in type 1 diabetes mellitus (T1DM). We have studied the association of five known restriction enzyme polymorphisms of the VDR gene in patients with T1DM. DESIGN AND METHODS One hundred and seven children with T1DM (T1DM for 5 Years; age, 1-14 Years; boys/girls,(More)
OBJECTIVE To investigate bone mineral density and bone homeostasis in cystic fibrosis (CF) and to assess changes in a 2-year period. METHODS Thirty-eight patients with clinically stable CF (11 children, 16 adolescents, 11 young adults) were enrolled. No patient was treated with corticosteroids before or during the study. Weight and height Z scores and(More)
Several lines of evidence support the hypothesis that vascular endothelial growth factor (VEGF) plays an important role in the pathogenesis of pre-eclampsia (PE). VEGF is a key component in the regulation of vascular remodelling and the survival of cytotrophoblasts in the placenta. In this case-control study, we aimed to test whether VEGF genetic(More)
OBJECTIVES Asphyxia and hypothermia may modify drug pharmacokinetics. We investigated whether analgesia with morphine in neonates with hypoxic ischemic encephalopathy undergoing prolonged moderate systemic hypothermia resulted in elevated serum morphine concentrations compared with normothermic infants. PATIENTS AND METHODS Infants from 1 center(More)
papers published in Gut between 1998 and 2003: altered conclusions after recalculating the Hardy-Weinberg equilibrium The Hardy-Weinberg law presents a mathematical statement that describes the relationship between gene frequencies and genotype frequencies: gene frequencies at a locus in a randomly interbreeding diploid population and population genotype(More)
The intention of our retrospective study was to determine whether vascular endothelial growth factor (VEGF) genetic polymorphisms are associated with risk for proliferative retinopathy of prematurity (ROP), a condition that is characterized by abnormal retinal neovascularization and can lead to retinal detachment and result in blindness. We enrolled 86 very(More)
Gastric proton pump inhibitors are widely used in the treatment of dyspeptic problems and for the eradication of H. pylori infection. Data are not available on whether omeprazole, a representative of proton pump inhibitors, influences the function of osteoclastic H+-pump in children. We studied the impact of short-term omeprazole administration on the(More)
Erythrocyte sodium-potassium (Na+/K+) -ATPase and sodium-lithium (Na+/Li+) countertransport activities were measured in 18 children (aged 9.6 years, range 6–16 years) with idiopathic hypercalciuria (IHU) to evaluate cellular Na handling. The effect of chronic thiazide administration on these parameters and on bone mineral density was also evaluated.(More)
Acute renal failure (ARF) affects about 10% of severely ill neonates. Recent studies have shown that genetic polymorphisms of proteins that play a role in neonatal physiology may contribute to individual susceptibility to both ARF and its risk factors. Our review summarizes the data collected to date. Studies have shown that the risk of preterm neonates for(More)
Systemic infection is a major risk factor for the development of neonatal acute renal failure (ARF). We investigated whether genetic polymorphisms of tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6, and IL-10 genes leading to a more intense inflammatory response might predispose very low birth weight (VLBW) infants to the development of ARF in(More)