Mehmet Emre Atabek

Necmettin Erbakan Üniversitesi, Conia, Konya, Turkey

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Publications (147)175.55 Total impact

  • Beray Selver Eklioğlu · Mehmet Emre Atabek · Nesibe Akyürek · Hayrullah Alp ·
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    ABSTRACT: Objective: The aim of this study was to evaluate the periaortic fat thickness (PAFT) using conventional echocardiography in obese children and adolescents with non-alcoholic fatty liver disease (NAFLD). Methods: Two hundred and ninety-seven obese children and adolescents were included in the study. Anthropometric measurements were made in all subjects, and fasting venous blood samples were taken for determination of glucose, insulin, total cholesterol, low-density lipoprotein (LDL) cholesterol, high-density lipoprotein (HDL) cholesterol, triglycerides, alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels. Ultrasonography of the liver was used for assessment of NAFLD and the subjects were grouped as NAFLD and non-NAFLD. Echocardiography was performed in all subjects. Results: PAFT was higher in patients with NAFLD compared with the non-NAFLD group. In patients with NAFLD, PAFT was positively correlated with waist circumference and with total cholesterol levels. In multiple regression analysis, waist circumference (β=0.28, p=<0.001) was found to be the best predictor of PAFT. Conclusion: Conventional echocardiography may be used to determine increased PAFT at an early stage in obese children and adolescents with NAFLD for careful monitoring of cardiovascular risk. © Journal of Clinical Research in Pediatric Endocrinology, Published by Galenos Publishing.
    Journal of Clinical Research in Pediatric Endocrinology 09/2015; 7(3):222-227. DOI:10.4274/jcrpe.1949
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    ABSTRACT: Objective: Children with Turner syndrome (TS) have a specific growth pattern that is quite different from that of healthy children. Many countries have population-specific growth charts for TS. Considering national and ethnic differences, we undertook this multicenter collaborative study to construct growth charts and reference values for height, weight and body mass index (BMI) from 3 years of age to adulthood for spontaneous growth of Turkish girls with TS. Methods: Cross-sectional height and weight data of 842 patients with TS, younger than 18 years of age and before starting any therapy, were evaluated. Results: The data were processed to calculate the 3rd, 10th, 25th, 50th, 75th, 90th and 97th percentile values for defined ages and to construct growth curves for height-for-age, weight-for-age and BMI-for-age of girls with TS. The growth pattern of TS girls in this series resembled the growth pattern of TS girls in other reports, but there were differences in height between our series and the others. Conclusion: This study provides disease-specific growth charts for Turkish girls with TS. These disease-specific national growth charts will serve to improve the evaluation of growth and its management with growth-promoting therapeutic agents in TS patients. © Journal of Clinical Research in Pediatric Endocrinology, Published by Galenos Publishing.
    Journal of Clinical Research in Pediatric Endocrinology 09/2015; 7(3):183-191. DOI:10.4274/jcrpe.2023
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    Nesibe AKYÜREK · Mehmet Emre ATABEK · Beray Selver EKLİOĞLU ·

  • Nesibe Akyurek · Mehmet Emre Atabek · Beray Selver Eklioglu ·

    06/2015; DOI:10.1530/boneabs.4.P189
  • N. Akyürek · M.E. Atabek · B.S. Eklioglu · H. Alp ·

    Diabetes & Metabolism 03/2015; 41(4). DOI:10.1016/j.diabet.2015.02.005 · 3.27 Impact Factor
  • Nesibe Akyürek · Mehmet Emre Atabek · Beray Selver Eklioğlu · Hayrullah Alp ·
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    ABSTRACT: There is an increased risk of cardiovascular morbidity in children and adolescents with classical congenital adrenal hyperplasia (CAH), presumably associated with obesity, hypertension, impaired glucose tolerance and dyslipidemia. This study was designed to evaluate the metabolic and cardiovascular profile of a group of children with classical CAH from the perspective of cardiovascular risk. Twenty-five CAH patients and 25 healthy controls were included in the study. Metabolic and anthropometric parameters were investigated and compared in these two groups. Subjects in the CAH group were shorter than the controls (p=0.001) and had higher body mass index values (p=0.033). Diastolic blood pressure (DBP) (p=0.027) and carotid intima-media thickness (CIMT) values (p=0.006) were also higher in the patient group. In 24% (n=6) of CAH patients, 24-h ambulatory BP monitoring showed arterial hypertension. CIMT was significantly higher in the hypertensive patients than in those with no hypertension (p=0.013). Twenty percent (n=5) of CAH patients had nocturnal hypertension. CIMT was significantly greater in the nocturnal hypertensive group (p=0.02). Mean systolic BP (SBP) and DBP dipping were significantly different in the CAH patients (p<0.001). CIMT correlated negatively with DBP dipping (r=-0632, p=0.037) in these patients. These results provide additional evidence for the presence of subclinical cardiovascular disease in classical CAH patients and its relationship with hypertension.
    Journal of Clinical Research in Pediatric Endocrinology 03/2015; 7(1):13-8. DOI:10.4274/jcrpe.1658
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    ABSTRACT: Turner syndrome (TS) is a chromosomal disorder caused by complete or partial X chromosome monosomy that manifests various clinical features depending on the karyotype and on the genetic background of affected girls. This study aimed to systematically investigate the key clinical features of TS in relationship to karyotype in a large pediatric Turkish patient population. METHODS: Our retrospective study included 842 karyotype-proven TS patients aged 0-18 years who were evaluated in 35 different centers in Turkey in the years 2013-2014. RESULTS: The most common karyotype was 45,X (50.7%), followed by 45,X/46,XX (10.8%), 46,X,i(Xq) (10.1%) and 45,X/46,X,i(Xq) (9.5%). Mean age at diagnosis was 10.2±4.4 years. The most common presenting complaints were short stature and delayed puberty. Among patients diagnosed before age one year, the ratio of karyotype 45,X was significantly higher than that of other karyotype groups. Cardiac defects (bicuspid aortic valve, coarctation of the aorta and aortic stenosis) were the most common congenital anomalies, occurring in 25% of the TS cases. This was followed by urinary system anomalies (horseshoe kidney, double collector duct system and renal rotation) detected in 16.3%. Hashimoto's thyroiditis was found in 11.1% of patients, gastrointestinal abnormalities in 8.9%, ear nose and throat problems in 22.6%, dermatologic problems in 21.8% and osteoporosis in 15.3%. Learning difficulties and/or psychosocial problems were encountered in 39.1%. Insulin resistance and impaired fasting glucose were detected in 3.4% and 2.2%, respectively. Dyslipidemia prevalence was 11.4%. CONCLUSION: This comprehensive study systematically evaluated the largest group of karyotype-proven TS girls to date. The karyotype distribution, congenital anomaly and comorbidity profile closely parallel that from other countries and support the need for close medical surveillance of these complex patients throughout their lifespan.
    Journal of Clinical Research in Pediatric Endocrinology 03/2015; 7(1):27-36. DOI:10.4274/jcrpe.1771
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    ABSTRACT: OBJECTIVE: Approaches to diagnosis and treatment of growth hormone deficiency (GHD) in children vary among countries and even among centers in the same country. This survey, aiming to facilitate the process of preparing the new consensus on GHD by the Turkish Pediatric Endocrinology and Diabetes Society, was designed to evaluate the current practices in diagnosis and treatment of GHD in different centers in Turkey. METHODS: A questionnaire covering relevant items for diagnosis and treatment of GHD was sent out to all pediatric endocrinology centers. RESULTS: Twenty-four centers returned the questionnaire. The most frequently used GH stimulation test was L-dopa, followed by clonidine. Eighteen centers used a GH cut-off value of 10 ng/mL for the diagnosis of GHD; this value was 7 ng/mL in 4 centers and 5 ng/mL in 2 centers. The most frequently used assay was immunochemiluminescence for determination of GH, insulin-like growth factor-1 and insulin-like growth factor binding protein-3 concentrations. Sex steroid priming in both sexes was used by 19 centers. The most frequently used starting dose of recombinant human GH (rhGH) in prepubertal children was 0.025-0.030 mg/kg/day and 0.030-0.035 mg/kg/day in pubertal children. Growth velocity was used in the evaluation for growth response to rhGH therapy in all centers. Anthropometric measurements of patients every 3-6 months, fasting blood glucose, bone age and thyroid panel evaluation were used by all centers at follow-up. Main indications for cessation of therapy were decreased height velocity and advanced bone age. Fourteen centers used combined treatment (rhGH and gonadotropin-releasing analogues) to increase final height. CONCLUSION: Although conformity was found among centers in Turkey in current practice, it is very important to update guideline statements and to modify, if needed, the approach to GHD over time in accordance with new evidence-based clinical studies.
    Journal of Clinical Research in Pediatric Endocrinology 03/2015; 7(1):37-44. DOI:10.4274/jcrpe.1794
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    ABSTRACT: Ovotesticular disorders of sexual development (OT-DSD) represent a rare sex development disorder characterized by the presence of both ovarian and testicular tissues in the same or the contralateral gonad. We present the case of a 14-year-old female patient with signs of virilization at a pubertal age and with dysmorphic features, diagnosed as 46,XX OT-DSD. We want to point out that patients with 46 XX OT-DSD may present with virilization at puberty and may be accompanied by dysmorphic features. Copyright © 2015 North American Society for Pediatric and Adolescent Gynecology. Published by Elsevier Inc. All rights reserved.
    Journal of Pediatric and Adolescent Gynecology 03/2015; DOI:10.1016/j.jpag.2015.02.112 · 1.68 Impact Factor
  • Nesibe Akyürek · Mehmet Emre Atabek · Beray Selver Eklioglu · Hayrullah Alp ·
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    ABSTRACT: Children with Turner syndrome (TS) have a broad range of later health problems, including an increased risk of cardiovascular morbidity and mortality. The aim of this study was to evaluate the relationship between periaortic fat thickness (PAFT) and metabolic and cardiovascular profiles in children with TS. Twenty-nine TS and 29 healthy children and adolescents were enrolled in the study. Anthropometric measurements, pubertal staging, and blood pressure measurements were performed. Fasting serum glucose, insulin, and lipid profile were measured. Periaortic fat thickness was measured using an echocardiography method, which has not previously been applied in children with TS. No difference was found between TS and control subject (CS) in age, weight, waist/hip ratio, HDL cholesterol and LDL cholesterol levels. However, in TS subjects, total cholesterol (p = 0.045) was greater than that in controls. It was determined that 13.7 % (N: 4) of TS subjects had dyslipidemia. Mean fasting glucose, fasting insulin, QUICK-I, HOMA, and FGIR index were similar in TS and in CS, whereas 17.2 % (N: 5) of TS subjects had insulin resistance (IR) and 13.7 % (N: 4) had impaired glucose tolerance. Six subjects (20.6 %) were diagnosed as hypertensive. Periaortic fat thickness was significantly higher in the TS group (p < 0.001) (0.1694 ± 0.025 mm in the TS group and 0.1416 ± 0.014 mm in the CS group) In children with TS, PAFT was positively correlated with fasting insulin, body mass index, and diastolic blood pressure. Our results provide additional evidence for the presence of subclinical cardiovascular disease in TS. In addition to existing methods, we recommend the measurement of periaortic fat thickness in children with TS to reveal the presence of early atherosclerosis.
    Pediatric Cardiology 01/2015; 36(5). DOI:10.1007/s00246-015-1098-4 · 1.31 Impact Factor
  • N. Akyürek · M.E. Atabek · B.S. Eklioglu ·
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    ABSTRACT: Type 1 diabetes (T1D) results from the destruction of pancreatic beta cells, and genetic and environmental factors are believed to be the major components in the development of the disease. Viruses have long been suspected to contribute to the onset of T1D. Hepatitis B (HBV) is associated with the development of autoimmunity. We describe a case of type 1 diabetes that was triggered by HBV.
    Gazi Medical Journal 01/2015; 26(2):66-67. DOI:10.12996/gmj.2015.21
  • Nesibe Akyürek · Mehmet Emre Atabek · Beray Selver Eklioglu · Hayrullah Alp ·
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    ABSTRACT: In this study, parameters of metabolic syndrome and dehydroepiandrosterone sulfate (DHEAS) levels in obese children and adolescents were evaluated and the associations between these factors were analyzed. One hundred obese and 40 healthy children/adolescents were included in the study. Pubertal stages, anthropometric and blood pressure measurements were recorded. Levels of fasting serum lipids, glucose, insulin, and DHEAS, and liver function tests were determined. Carotid intima-media thickness (CIMT) was measured using two-dimensional echocardiography. Steatorrhoeic hepatosis was evaluated using abdominal ultrasonography in the obese group. Mean body weight, body mass index, waist, hip circumference, waist/hip ratio, homeostatic model assessment of insulin resistance, triglycerides, high-density lipoprotein cholesterol, alanine transferase, DHEAS, and CIMT values were significantly higher in the obese group than in the controls. DHEAS levels were found to be positively correlated with waist circumference, waist/hip ratio, and CIMT. Early determination of metabolic and cardiac dysfunction in obese children is important for the prevention of future complications. Since in this study we found a strong association between DHEAS levels and obesity-related metabolic and cardiovascular risk factors, we believe that this may lead to increased interest in further studies of DHEAS in the search for new treatment approaches.
    Journal of pediatric endocrinology & metabolism: JPEM 11/2014; 28(5-6). DOI:10.1515/jpem-2014-0253 · 1.00 Impact Factor
  • Nesibe Akyürek · Mehmet Emre Atabek · Beray Selver Eklioğlu ·

    06/2014; DOI:10.12956/tjpd.2014.58
  • Mehmet Emre Atabek · Beray Selver Eklioglu · Nesibe Akyürek ·
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    ABSTRACT: Objective: The aim of this study was to identify which metabolic syndrome criteria (WHO or IDF) better reflect the presence of non-alcoholic fatty liver disease (NAFLD) and to determine the prevalence of metabolic syndrome (MS) and NAFLD. Methods: Two hundred and seventeen obese children and adolescents, 8-15 years of age (body mass index >95 p), were included in the study. Anthropometric measurements, blood pressure measurements, an oral glucose tolerance test and lipid profile were measured. MS was diagnosed according to WHO and IDF criteria. NAFLD risk ratio was assessed according to the two MS criteria. Results: The prevalence of MS according to the IDF criteria was 43.3 %, and according to WHO criteria it was 55.2 %. NAFLD prevalence in the metabolic syndrome group according to IDF criteria was 25.5 % and this was statistically significant (p = 0.007). The prevalence of NAFLD was 20.8 % in the group with MS according to WHO criteria and this was not a statistically significant difference (p = 0.15). NAFLD hazard ratios were 7.06 (95 % CI 1.29-5.50) in the MS group according to IDF criteria and 2.02 (95 % CI 0.81-3.53) in the group with metabolic syndrome according to WHO criteria. IDF criteria were found to have a higher odds ratio. Conclusion: The prevalence of MS depends on the diagnostic criteria used. IDF criteria give the best measure for the presence of NAFLD. NAFLD might be important as diagnostic criterion for MS.
    Eating and weight disorders: EWD 05/2014; 19(4). DOI:10.1007/s40519-014-0129-0 · 0.79 Impact Factor
  • Celebi Kocaoglu · Huseyin Caksen · Mehmet Emre Atabek · Huseyin Kurku · Sukru Arslan ·
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    ABSTRACT: Objectives: The aim of the present study was to determine the level of ischemia-modified albumin (IMA) in children with epileptic seizures (ESs) and its relation with the seizure duration. Methods: The study was performed with 88 children as a prospective case-control study. Blood samples for IMA were obtained from 57 patients (mean age [SD], 50.86 [51.15] months) within 3 hours after ES and 31 healthy control subjects (mean age [SD], 53.13 [40.87] months). Ischemia-modified albumin was measured by the albumin cobalt binding test. Results: Although the mean (SD) of serum IMA level of the patients with seizure was 13.66 (13.16) U/mL, the mean (SD) of serum IMA level for the control group was 3.73 (1.93) U/mL. Ischemia-modified albumin levels were significantly higher in patients with seizure, compared with that in the control group (P < 0.01). When patients were grouped in itself according to the duration of ESs, the levels of IMA were detected to be increased in patients as the duration of seizures was lengthened. Conclusions: Increased IMA levels after seizures suggest that IMA assay during seizure may be useful for predicting the diagnosis and severity of convulsion.
    Pediatric Emergency Care 05/2014; 30(6). DOI:10.1097/PEC.0000000000000145 · 1.05 Impact Factor

  • 05/2014; 27(7-8). DOI:10.1515/jpem-2013-0204
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    ABSTRACT: Background: The aim of our study was to evaluate the associations between vitamin D deficiency, the atherosclerosis and metabolic syndrome. Methods: Two hundred and forty-seven obese children and adolescents, 8-16 years of age (body mass index>95 p) were included in the study. Anthropometric measurements, blood pressure measurements, lipid profile, vitamin D level and carotid intima media thickness (c-IMT) were measured. MS was diagnosed according to IDF criteria. Results: The prevalance of vitamin D deficieny in obese children and adolescent was 46.6%. Low levels of vitamin D were associated with increased carotis intima media thickness and metabolic syndrome (p=0.03, p=0.04, respectively). For clinical cardiovascular risk factors, mutivariable regression analyses showed that low vitamin D level was best predictor of c-IMT. Conclusions: In this study we showed an association between low vitamin D status and atherosclerosis independent of traditional risk factors in obese children and adolescents.
    04/2014; 27(7-8). DOI:10.1515/jpem-2013-0379
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    ABSTRACT: Abstract Background: Childhood obesity is a cardiovascular risk factor. Objective: Epicardial adipose tissue (EAT) thickness, carotid intima-media thickness (IMT) and cardiac functions of obese children and their correlations were evaluated. Subjects: Five hundred obese children and 150 age- and sex-matched healthy controls. Methods: Anthropometric, laboratory data and echocardiographic measurements of IMT, EAT and cardiac functions were determined. Results: Increased M-mode echocardiographic measurements, E/e' ratios, Tei index values and decreased E/A and e'/a' ratios (where E and A are early and late mitral/tricuspid diastolic velocities, respectively, and e' and a' are peak early diastolic and peak atrial systolic myocardial velocities, respectively), were determined in the obese group. Also, carotid artery IMT and EAT thickness were significantly higher in obese children. Carotid artery IMT, EAT thickness and left ventricular mass (LVM) were found to be strongly associated with Tei index values. Conclusion: Obesity is a major risk factor for cardiovascular diseases. In our study, we showed that obese children have early subclinical systolic and diastolic dysfunctions. Also, these cardiac impairments are correlated with the increase in IMT, EAT thickness and LVM.
    04/2014; 27(9-10). DOI:10.1515/jpem-2013-0306
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    ABSTRACT: Obesity and hypertension are associated with structural and functional cardiac change in children and adults. The aim of the study is to evaluate the effect of hypertension and obesity on left ventricular geometric patterns and cardiac functions assessed by conventional and Doppler echocardiography. Four hundred and thirty obese children, aged 6-17 years and 150 age and sex-matched healthy controls, were included in the study. Left ventricular geometry was classified as concentric hypertrophy, eccentric hypertrophy, concentric remodeling and normal geometry. Concentric hypertrophy group had the worst subclinical systolic and diastolic cardiac functions among all left ventricular geometric patterns. BMI and total adipose tissue mass are the predictors of abnormal ventricular geometry. Apart from the increase in carotid intima-media and epicardial adipose tissue thicknesses in different left ventricular geometry patterns, they are not predictable for abnormal geometry. The variety of alterations in cardiac function and morphology that has been observed in obese adults, appears to start earlier in life. Obesity and hypertension were clearly associated with the left ventricular geometry. Also, subclinical systolic and load-depended diastolic dysfunctions can be detected in obese hypertensive children with concentric hypertrophy.
    Journal of Hypertension 04/2014; 32(6). DOI:10.1097/HJH.0000000000000176 · 4.72 Impact Factor
  • Nesibe Akyürek · Mehmet Emre Atabek · Beray Selver Eklioglu ·

    01/2014; 28(1-2):1-2. DOI:10.1515/jpem-2013-0216

Publication Stats

1k Citations
175.55 Total Impact Points


  • 2012-2015
    • Necmettin Erbakan Üniversitesi
      • Meram Faculty of Medicine
      Conia, Konya, Turkey
  • 2003-2012
    • Selcuk University
      • • Division of Pediatric Endocrinology
      • • Department of Pediatrics
      • • Faculty of Medicine
      Conia, Konya, Turkey
  • 2002-2008
    • Erciyes Üniversitesi
      • • Faculty of Medicine
      • • Department of Pediatrics
      Melikgazi, Kayseri, Turkey