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Battal F.,Zonguldak Karaelmas University | Ermis B.,Sakarya University | Aktop Z.,Zonguldak Karaelmas University | Can M.,Zonguldak Karaelmas University | Demirel F.,Ankara Childrens Health and Diseases Hematology Oncology Hospital
Journal of Pediatric Endocrinology and Metabolism | Year: 2011

Objective: The aim of this study was to evaluate early cardiac abnormalities in obese children by the conventional echocardiography and to verify whether N-terminal pro B-type natriuretic peptide (NT-proBNP) differ between obese and healthy children. Methods: We started this study with 68 obese children and 35 healthy controls matched for age and sex. Body mass index (BMI) was calculated. Children with a BMI ≥95th percentile were considered obese. Thirty children in the obese group were also diagnosed with metabolic syndrome, according to the International Diabetes Federation criteria. Standard echocardiographic study was performed on each patient and control subject. Diastolic filling parameters were evaluated using pulsed-wave tissue Doppler method. Blood samples were taken at 8 a.m. to study blood biochemistry tests, including insulin, lipids, glucose, and NT-proBNP. Serum NT-proBNP levels were measured by a solid-phase, enzymelabeled chemiluminescent immunometric assay. Homeostasis model assessment of insulin resistance (HOMA-IR) was calculated. Children with HOMA-IR >3.16 were considered insulin-resistant. Results: There were diastolic filling abnormalities in obese children, as shown by a decreased mitral valve early filling (E) wave/late filling (A) ratio and a prolongation in E-wave deceleration time. The levels of NT-proBNP were not statistically different among the groups. The levels of NT-proBNP were not different between obese children with and without metabolic syndrome, those with and without hypertension, and those with and without insulin resistance, respectively. Conclusion: Although there were diastolic filling abnormalities in obese children, their NT-proBNP levels were not different from healthy controls. It seems that there is no diagnostic value in NT-proBNP levels between obese children and healthy controls © 2011 by Walter de Gruyter • Berlin • Boston. Source


Demirel F.,Ankara Childrens Health and Diseases Hematology Oncology Hospital | Esen I.,Ankara Childrens Health and Diseases Hematology Oncology Hospital | Tunc B.,Ankara Childrens Health and Diseases Hematology Oncology Hospital | Tavil B.,Ankara Childrens Health and Diseases Hematology Oncology Hospital
Journal of Pediatric Endocrinology and Metabolism | Year: 2010

Infantile malignant osteopetrosis is a rare and genetically autosomal recessive disease characterized by osteoclast malfunction. Decreased osteoclast-mediated bone resorption may be inadequate to maintain a normal serum calcium-phosphorus balance in the extracellular fluid. Consequently, despite markedly positive total body calcium balance, patients with osteopetrosis paradoxically could develop rickets. The concurrence of osteopetrosis and rickets has been termed "osteopetrorickets". We report here a 3-month-old boy who was diagnosed with osteopetrorickets with clinical features. Although osteopetrorickets is defined as a rare paradoxical feature of infantile malignant osteopetrosis in some studies, it seems to be more common than was previously known. Coexistence of rickets and osteopetrosis may have adverse effects on clinical response to stem cell transplantation. Therefore, a diagnosis of rickets must be considered in patients with osteopetrosis and then for better results, prior to the SCT, the rickets should be completely treated. © Freund Publishing House Ltd. Source

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