Browsing by Author "Üner, A."

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Auditory Brainstem Response in Children With Iron Deficiency Anemia
(2003) Çankaya, H.; Öner, A.F.; Egeli, E.; Çaksen, H.; Üner, A.; Akçay, G.
To investigate the neurosensorial influences with auditory brainstem response (ABR) in iron deficiency anemia. We recorded ABR in 33 children with iron deficiency anemia followed and in 31 healthy children (control group 1, 0-12 months, control group 2, 13-36 months, control group 3, 37-60 months) as a control group. The patients and controls were divided into three group: group I, at 12 months of age, group II, 13-36 months, and group III, 37-60 months. In all groups, composed latency time, inter-peak latency, amplitude of peaks, I-V wave amplitude ratio and waveform were evaluated and compared with control groups. In group I, I-V interpeak latency was increased compared with control group 1 (4.58 vs. 4.20 ms, p < 0.05). In group II, Wave V latency time and III-V interpeak latency were increased compared with control group 2 (6.21 ms vs. 5.63 ms. p < 0.005 and 0, 48 vs. 0.22 p < 0.005, respectively). In group III, wave I latency time was increased compared with control group 3 (1.56ms vs. 1.46 ms) (p < 0.05). We considered that increases in ABR latencies might be explained by delayed maturation of myelinisation, which requires iron, and/or by dysfunction of iron containing enzymes.
Beta-Thalassemia Mutations in the East of Turkey
(2001) Öner, A.F.; Özer, R.; Üner, A.; Arslan, Ş.; Gümrük, F.
This study was planned to determine the frequency of β-thalassemia trait and mutations in Van Lake region, which is in the eastern part of Turkey, surrounded by Iran in the east and by Iraq in the south. This study consist of 1014 healthy students, between the age of 12 and 18 years who are studying in boarding schools in Van city and cities surrounding Van Lake that includes Van, Aǧri, Hakkari, Bitlis, Muş and Siirt. The students were randomly selected according to their school numbers. Their origin was not taken into consideration in selection. Complete blood counts were performed on all donors. The accepted lower limit of mean corpuscular volume (MCV) and mean corpuscular hemoglobin (MCH) were 78 fL and 27 pg respectively. HbA2 was measured by DE-52 microcolumn chromatography method. β-Thalassemia trait with high HbA2 was found in 6 children. β-Thalassemia homozygous form of -30 (T-A) mutation was determined in one child and HbD-Los Angeles heterozygous in another. The β-thalassemia homozygous individual was accepted as two cases in prevalence calculation. We found that the prevalence of β-thalassemia trait was 0.78% in this area. In DNA analyses, there were β-thalassemia gene mutations of FSC 8/9 (+G), -30 (T-A), IVS I-110 (G-A), IVS II-1 (G-A) and IVS I-130 (G-A) in 3, 2, 1, 1 and 1 individuals, respectively. We conclude that although five different β-thalassemia mutation exist in Van Lake region, β-thalassemia is not a potential risk in the east of Turkey.
The Effect of Childhood Obesity on Cardiac Functions
(Freund Publishing House Ltd, 2014) Üner, A.; Doǧan, M.; Epcacan, Z.; Epçaçan, S.
Obesity is a metabolic disorder defined as excessive accumulation of body fat, which is made up of genetic, environmental, and hormonal factors and has various social, psychological, and medical complications. Childhood obesity is a major indicator of adult obesity. The aim of this study is to evaluate the cardiac functions via electrocardiography (ECG), echocardiography (ECHO), and treadmill test in childhood obesity. A patient group consisting of 30 obese children and a control group consisting of 30 non-obese children were included in the study. The age range was between 8 and 17 years. Anthropometric measurements, physical examination, ECG, ECHO, and treadmill test were done in all patients. P-wave dispersion (PD) was found to be statistically significantly high in obese patients. In ECHO analysis, we found that end-diastolic diameter, end-systolic diameter, left ventricle posterior wall thickness, and interventricular septum were significantly greater in obese children. In treadmill test, exercise capacity was found to be significantly lower and the hemodynamic response to exercise was found to be defective in obese children. Various cardiac structural and functional changes occur in childhood obesity and this condition includes important cardiovascular risks. PD, left ventricle end-systolic and end-diastolic diameter, left ventricle posterior wall thickness, interventricular septum thickness, exercise capacity, and hemodynamic and ECG measurements during exercise testing are useful tests to determine cardiac dysfunctions and potential arrhythmias even in early stages of childhood obesity. Early recognition and taking precautions for obesity during childhood is very important to intercept complications that will occur in adulthood. © 2014 by Walter de Gruyter Berlin Boston 2014.
Effects of High-Dose Methylprednisolone Therapy on Lymphocyte Subtypes in Patients With Acute Immune Thrombocytopenic Purpura
(2005) Öner, A.F.; Bay, A.; Kuru, M.; Üner, A.; Arslan, Ş.; Dilek, I.
The aim of this study was to determine the effect of high-dose methylprednisolone (HDMP) on lymphocyte subtypes, CD4/CD8 ratio and clinical efficacy of the treatment in children with acute immune thrombocytopenic purpura (ITP). The study consisted of 21 children (aged between 1.5-14 years) with ITP treated with HDMP for 7 days. Absolute lymphocyte count, CD4+ and CD8+ T lymphocyte levels were examined on peripheral blood and CD4/CD8 ratio was calculated before and after HMTP treatment (on 0 and 8th days) in all subjects. There was no statistically significant difference for age and sex between the study and the control group. A significant reduction was observed in the percentage of CD4+ lymphocyte (39.0 ± 7.5% vs 29.3 ± 8.1%, p= 0.001), CD8+ lymphocyte (27.1 ± 7.2% vs 23.7 ± 8.3%, p= 0.03), CD4+/CD8+ (1.5 ± 0.5 vs 1.3 ± 0.4, p= 0.02) and the absolute number of CD4+ lymphocyte count (1694.99 ± 1019 vs 1199.12 ± 612, p= 0.038). These findings indicated that HDMP treatment may cause a decrease in the percentage of CD4+ and CD8+ T-lymphocyte and ratio of CD4+/CD8+ lymphocyte in patients with acute ITP. We suggest that the effectiveness of steroids may depended upon the suppression of CD4 T-lymphocyte and sequential monitoring of circulating lymphocyte subtypes may be used to predict the clinical effects of steroid treatment.
Ellis-Van Creveld Syndrome
(TIP ARASTIRMALARI DERNEGI, 2008) Cesur, Y.; Yuca, S.A.; Üner, A.; Yuca, K.; Arslan, D.
Ellis-van Creveld syndrome (EVCS) or chondroectodermal dysplasia is a rare autosomal recessive disorder characterized by a variable spectrum of clinical findings. Classical EVC syndrome comprises a tetrad of clinical manifestations of chondrodystrophy, polydactyly, ectodermal dysplasia, and cardiac defects. The patient presented with short stature, polydactyly, triangular face and dental dismorphism was found appropriately as radiographic with ectodermal dysplasia. In addition to the presence of single atrium, mitral, tricuspid and pulmonary valve insufficiency and pulmonary hypertension wererevealed by echocardiography. Her history involved a sister who was dead in 3-month-ages.
Report of a Turkish Girl With Andersen-Tawil Syndrome
(IOS Press, 2006) Çaksen, H.; Ptacek, L.; Üner, A.; Fu, Y.-H.; Erol, M.; Anlar, O.; Sami Güven, A.
The case is a 9-year-old girl with a history of syncope attacks for 6 years and recurrent paraplegia attacks for 1.5 years. She was diagnosed with epilepsy and was given valproate for the attacks, but no improvement was noted. Because of her paraplegia attacks, lasting between a few hours and 3 days, abnormal findings she was diagnosed with conversion. Her prenatal, natal and postnatal history was unremarkable, and her school performance was high. There was a close consanguinity between the parents. She had four healthy sibs. Her mother, maternal uncle and maternal grandmother had intermittent fatigue, numbness on the extremities. On physical examination, she had mild elongated face and dysmorphic changes on the hands. Muscle strength was normal on the upper extremities, but no muscle activity was noted on the lower extremities. She also had no response to touch and pain stimuli on the lower extremities. On laboratory investigation, serum electrolytes including potassium level, renal and liver function tests were normal. Glomerul filtration rate was 59 mL/min/m2. QTc interval was mild prolonged (0.45 seconds). Electromyographic examination was unremarkable. On DNA mutation analysis, no mutation of KCJN2 gene coding for Kir 2.1 protein was diagnosed. Her mother had normal serum electrolytes, but had prolonged QTc interval (0.46 seconds). Her father was completely normal for serum electrolytes and electrocardiographic examination. Unfortunately, maternal uncle and grandmother could not be examined. Based on the clinical and laboratory abnormalities she was diagnosed with Andersen-Tawil syndrome and given potassium supplementation. Her paraplegia and syncope attacks were markedly decreased after initiating potassium therapy. Now, she is in the 3rd year of follow-up. She is continued to use potassium and her paraplegia and syncope attacks noted only one attack a 2-3 months. © 2006 IOS Press. All rights reserved.
Rickets in Healthy Adolescents in Van, the Eastern of Turkey
(TIP ARASTIRMALARI DERNEGI, 2010) Üner, A.; Acar, M.N.; Cesur, Y.; Doǧan, M.; Çaksen, H.; Temel, H.; Özbek, H.
Aim: To investigate the ratio of rickets and vitamin D deficiency in healthy adolescents at Van region. Method: Totally 126 cases were included in this study. All cases were evaluated for the presence of rickets symptoms, daily sun exposure, and vitamin usage, covering and eating habit. Diagnosis of rickets was made based on biochemical findings. The children whose vitamin D levels were lower than 10 ng/dl were accepted as vitamin 25(OH)D3 deficiency, but whose levels between 10-20 ng/dl were accepted as vitamin D insufficiency. Result: Sixty girls (47.6%) and 66 boys (52.4%) were included in this study. They were between 9 and 17 years old (11.94 ± 1.9 years). Vitamin D levels in 60 (47.6%) cases were normal, but 48 (38.1%) cases had rickets, 13 (10.3%) cases had vitamin D insufficiency and 5 (4.0%) cases had vitamin D deficiency. There was no statistically significant difference in the incidence of rickets between the cases with or without covered-dress. However, there was a significant difference in the incidence of vitamin D insufficiency (p<0.05). All of the cases had less daily calcium, phosphorus, protein and vitamin D intake than recommended daily amount. In the rickets group, alkaline phosphatase levels were significantly higher comparing with the others (p<0.05), but there was no difference in plasma intact parathyroid hormone levels. Conclusion: Our findings revealed that most adolescents who appeared to be healthy (52.4%) could have vitamin D insufficiency. Therefore, we believe that dietary education and/or vitamin D prophylaxis might be given to all adolescents. However, more extensive researches should be done to elucidate of our suggestion's correction.
Serum Immunoglobulins and Immunoglobulin G Subclasses With Recurrent Wheezing
(The Indian Journal of Pediatrics, 2000) Öner, A.F.; Çaksen, H.; Çelik, A.; Cesur, Y.; Üner, A.; Arslan, S.
In this study serum immunoglobulins (Ig) and IgG subclasses were measured in 42 patients (ranging 9 month-6 year) with recurrent wheezing and in 37 healthy children determined the relationship between serum Igs and recurrent wheezing. Patients were divided into two groups according to the age [9 month-2 year (n: 15), and 2-6 year (n: 27)]. In the patients placed in 9-24 month age group, serum IgG4 level was found to be lower than controls (p<0.05). But there was not a significant difference in mean serum concentrations of total IgG, IgA, IgM, IgE, IgG1, IgG2 and IgG3 subclasses between the groups (P>0.05). In the 25 month-6 year age group the mean IgE level was increased compared to the control while IgG3 and IgG4 levels were decreased (p<0.05). On the other hand, in the 9-24 month age group there was no significant difference between the patients and controls for IgG subclasses deficiency (P>0.05). However, significant difference in IgG subclasses deficiency was present between the patients and controls in the 25 month-6 year group (P<0.001). In conclusion, our findings suggest that wheezing in childhood may be associated with low IgG3 and/or IgG4, and in older children high IgE level may be a part of pathogenetic mechanism in patients with recurrent wheezing.
Teicoplanin Administration in a Case of Endocarditis With Vancomycin-Induced Neutropenia
(2006) Bay, A.; Öner, A.F.; Üner, A.; Doĝan, M.; Cesur, Y.
Neutropenia is an uncommon adverse effect associated with prolonged vancomycin therapy. The vancomycin-induced neutropenia is believed to be immunologically based and independent of drug concentrations. Neutrophil counts normally recover after discontinuation of vancomycin in this situation, but treatment options are needed for those patients who require ongoing antibiotic therapy. We report an eight year-old boy with infective endocarditis and vancomycin-induced neutropenia in which the neutropenia resolved after vancomycin was replaced by the structurally related compound teicoplanin. Patients should have periodic assessment of white blood cell and neutrophil counts and discontinuation of vancomycin should be considered if neutropenia develops.