13 results on '"Kocaay P"'
Search Results
2. A Duplication Upstream of SOX9 Associated with SRY Negative 46,XX Ovotesticular Disorder of Sex Development: A Case Report
- Author
-
Mengen E, Kayhan G, Kocaay P, and Uçaktürk SA
- Subjects
- 46, XX Disorders of Sex Development pathology, Child, Preschool, Disorders of Sex Development genetics, Female, Gene Deletion, Gene Duplication, Humans, Male, Ovotesticular Disorders of Sex Development pathology, Promoter Regions, Genetic genetics, Turkey, 46, XX Disorders of Sex Development genetics, Genes, sry, Ovotesticular Disorders of Sex Development genetics, SOX9 Transcription Factor genetics
- Abstract
The 46,XX ovotesticular disorder of sex development (DSD) is rarely observed in humans. This disorder is generally described as ambiguous genitalia with the presence of ovarian and testicular tissues in different gonads or in the same gonad. Almost no subjects with 46,XX ovotesticular DSD have sex-determining region of the Y chromosome (SRY) gene. It is known that excessive expression of SRY-related high mobility group box 9 (SOX9) is the cause of SRY-negative 46,XX ovotesticular DSD in the absence of SRY. Here, we analyzed our SRY-negative case with 46,XX ovotesticular DSD. In an array comparative genomic hybridization study using a peripheral blood sample from the patient, a duplication of 1114 kb (Hg19 coordinates: chr17:69006280-70120619) in the region of 17q24.3 containing SOX9 was detected. This is the first case reported from Turkey, exhibiting SOX9 duplication in SRY-negative 46,XX ovotesticular DSD.
- Published
- 2020
- Full Text
- View/download PDF
3. The Effects of Risk Behaviors and Orthorexic Behavior on Glycemic Control in Adolescents with Type 1 Diabetes
- Author
-
Taş D, Mengen E, Kocaay P, and Uçaktürk SA
- Subjects
- Adolescent, Blood Glucose metabolism, Cross-Sectional Studies, Diabetes Mellitus, Type 1 complications, Diet, Healthy psychology, Feeding Behavior physiology, Feeding and Eating Disorders complications, Female, Glycated Hemoglobin analysis, Glycated Hemoglobin metabolism, Humans, Male, Obsessive Behavior blood, Obsessive Behavior complications, Turkey, Diabetes Mellitus, Type 1 blood, Feeding and Eating Disorders blood, Glycemic Control, Risk-Taking
- Abstract
Objective: Adolescents with chronic disease are as likely to exhibit risk-taking behavior as their peers. The aim was to investigate the risk behaviors of adolescents with type 1 diabetes (T1D) and the effect of orthorexic eating behaviors (OEB) on glycemic control (GC)., Methods: This cross-sectional study was conducted with 107 adolescents with T1D, aged between 13-18 years and attending high school. The Risk Behavior Scale (RBS) and Orthorexic Behavior Scale (ORTO-11) were administered. A high RBS score indicates risky behavior; a low ORTO-11 score suggests a tendency to OEB. Participants hemoglobin A1c (HbA1c) status was used to assess GC: optimal GC (HbA1c ≤7%); or poor GC (HbA1c >7%)., Results: Among females, those with poor GC had significantly lower (p=0.031) ORTO-11 scores than those with optimal GC, which was not the case in males. A significant correlation (r=0.358, p<0.001) was found between HbA1c and total RBS, eating habits subscale, and suicidal tendency subscale scores. Participants with poor GC had significantly higher eating habits subscale, alcohol use, and tobacco use subscale scores (p<0.05). Among females, total RBS and suicidal tendency subscale score was found to be significantly higher in those with poor GC; among males, alcohol subscale score was found to be significantly higher in those with poor GC., Conclusion: This study is the first to show the effect of the tendency for OEB on GC among female adolescents with T1D. The study showed that, along with inappropriate eating behaviors, adolescents with T1D should also be assessed for other risk behaviors to help achieve optimal GC.
- Published
- 2020
- Full Text
- View/download PDF
4. Catecholamine-induced Myocarditis in a Child with Pheochromocytoma
- Author
-
Uçaktürk SA, Mengen E, Azak E, Çetin İİ, Kocaay P, and Şenel E
- Subjects
- Child, Humans, Male, Adrenal Gland Neoplasms complications, Adrenal Gland Neoplasms diagnosis, Adrenal Gland Neoplasms metabolism, Catecholamines metabolism, Myocarditis diagnosis, Myocarditis etiology, Myocarditis metabolism, Pheochromocytoma complications, Pheochromocytoma diagnosis, Pheochromocytoma metabolism
- Abstract
Pheochromocytomas and paragangliomas (PPGLs) are rare neuroendocrine tumors. The clinical presentation of pediatric PPGLs is highly variable. In cases with pheochromocytoma (PCC), excess catecholamine may stimulate myocytes and cause structural changes, leading to life-threatening complications ranging from stress cardiomyopathy (CM) to dilated CM. Herein, we report the case of catecholamine-induced myocarditis in a child with asymptomatic PCC. A 12-year-and-2-month-old male patient with a known diagnosis of type-1 neurofibromatosis was brought to the emergency department due to palpitations and vomiting. On physical examination, arterial blood pressure was 113/81 mmHg, pulse was 125/min, and body temperature was 36.5 °C. Laboratory tests showed a leucocyte count of 12.8x10
3 μL/L and a serum C-reactive protein level of 1.1 mg/dL (Normal range: 0-0.5). Thyroid function tests were normal, while cardiac enzymes were elevated. Electrocardiogram revealed no pathological findings other than sinus tachycardia. The patient was diagnosed with and treated for myocarditis as echocardiography revealed a left ventricular ejection fraction of 48%. Viral and bacterial agents that may cause myocarditis were excluded via serological tests and blood cultures. Blood pressure, normal at the time of admission, was elevated (140/90 mmHg) on the 5th day of hospitalization. Magnetic resonance imaging revealed a 41x46x45 mm solid adrenal mass. The diagnosis of PCC was confirmed by elevated urinary and plasma metanephrines. The patient underwent surgery. Histopathology of the excised mass was compatible with PCC. It should be kept in mind that, even if there are no signs and symptoms of catecholamine elevation, CM may be the first sign of PCC.- Published
- 2020
- Full Text
- View/download PDF
5. The Significance of Thiol/Disulfide Homeostasis and Ischemia-modified Albumin Levels in Assessing Oxidative Stress in Obese Children and Adolescents
- Author
-
Mengen E, Uçaktürk SA, Kocaay P, Kaymaz Ö, Neşelioğlu S, and Erel Ö
- Subjects
- Adolescent, Biomarkers blood, Child, Child, Preschool, Chronic Disease, Female, Humans, Inflammation blood, Male, Metabolic Syndrome blood, Pediatric Obesity blood, Serum Albumin, Human, Disulfides blood, Homeostasis physiology, Inflammation metabolism, Metabolic Syndrome metabolism, Oxidative Stress physiology, Pediatric Obesity metabolism, Sulfhydryl Compounds blood
- Abstract
Objective: There is an association between obesity and several inflammatory and oxidative markers in children. In this study, we analyzed thiol/disulfide homeostasis and serum ischemia-modified albumin (IMA) levels for the first time in order to clarify and determine the oxidant/antioxidant balance in metabolically healthy and unhealthy children., Methods: This study included obese children and healthy volunteers between 4-18 years of age. The obese patients were divided into two groups: metabolically healthy obese (MHO) and metabolically unhealthy obese (MUO). Biochemical parameters including thiol/disulfide homeostasis, and IMA concentrations were analyzed., Results: There were 301 recruits of whom 168 (55.8%) were females. The obese children numbered 196 (MHO n=58 and MUO n=138) and healthy controls numbered 105. No statistically significant difference could be found in ages and genders of the patients among all groups (p>0.05, for all). Native thiol (SH), total thiol (SH+SS), and native thiol/total thiol (SH/SH+SS) ratio were statistically significantly lower in the MUO group than the control group (p<0.001, p=0.005, and p=0.005; respectively). Disulfide (SS), disulfide/native thiol (SS/SH), disulfide/total thiol (SS/SH+SS) and IMA levels were statistically significantly higher in the MUO group than the control group (p=0.002, p<0.001, p<0.001, and p=0.001, respectively)., Conclusion: Chronic inflammation due to oxidative stress induced by impaired metabolic parameters in MUO children caused impairment in thiol redox homeostasis. Our data suggested that the degree of oxidant imbalance in obese children worsened as obesity and metabolic abnormalities increased. It is hypothesized that thiol/disulfide homeostasis and high serum IMA levels may be reliable indicators of oxidant-antioxidant status in MUO children.
- Published
- 2020
- Full Text
- View/download PDF
6. Evaluation of Renal Function in Obese Children and Adolescents Using Serum Cystatin C Levels, Estimated Glomerular Filtration Rate Formulae and Proteinuria: Which is most Useful?
- Author
-
Önerli Salman D, Şıklar Z, Çullas İlarslan EN, Özçakar ZB, Kocaay P, and Berberoğlu M
- Subjects
- Adolescent, Biomarkers, Child, Female, Humans, Kidney Diseases etiology, Kidney Diseases metabolism, Male, Metabolic Syndrome complications, Pediatric Obesity complications, Prospective Studies, Cystatin C blood, Glomerular Filtration Rate physiology, Kidney Diseases diagnosis, Kidney Function Tests standards, Metabolic Syndrome metabolism, Pediatric Obesity metabolism, Proteinuria urine
- Abstract
Objective: There is a growing interest in the relationship between obesity and renal damage. The effect of obesity on renal function in children and adolescents has not been adequately investigated. In addition, there is no complete consensus on the reliability of various renal function parameters. The primary goal of this study was to evaluate renal function in obese children and adolescents using glomerular filtration rate (GFR), cystatin C, and creatinine (Cr)-derived formulas. We also compared classical GFR measurement methods with methods based on bioimpedance analysis-derived body cell mass (BCM)., Methods: We enrolled 108 obese and 46 healthy subjects aged 6-18 years. Serum cystatin C, serum Cr, 24-hour proteinuria, Cr clearance, and GFR were evaluated in both groups. Estimated GFR was measured with Cr-based, cystatin C-based, combined (cystatin C and Cr) and BCM-based formulae. Both actual and fat-free mass body surface areas (BSA) were used when required. Metabolic parameters (blood glucose, insulin, and lipids) were analyzed in the obese subjects. International Diabetes Federation criteria were used to identify metabolic syndrome (MetS)., Results: We did not detect statistically significant differences between the obese and control groups for mean Cr (p=0.658) and mean cystatin C (p=0.126). Mean cystatin C levels of MetS patients were significantly higher than those of non-MetS obese participants (p<0.001). Cr-based GFR measurements, BCM-based measurements and a combined Cr and cystatin C measurement showed a statistically significant increase in the GFR of obese subjects compared to controls (p=0.002 and p<0.001). This increase was negatively correlated with duration of obesity. Estimations based on actual or fat-free mass BSA did not differ either. Only the Filler equation showed a statistically significant decrease in eGFR in MetS patients. There were no statistically significant differences between the obese and control groups for proteinuria (p=0.994) and fat-free mass proteinuria (p=0.476)., Conclusion: We conclude that cystatin C could be used as an earlier biomarker than Cr in the detection of impaired renal function in obese children, especially those with MetS. Cr-based formulae reveal hyperfiltration as the first change in renal function. Decreasing eGFR seen in MetS patients with cystatin C-based formulae, but not Cr-based formulae, may represent the early stages of renal damage. Using fat-free mass or BCM for eGFR formulae in obese children seems to provide no additional information.
- Published
- 2019
- Full Text
- View/download PDF
7. Evaluation of Efficacy of Long-term Growth Hormone Therapy in Patients with Hypochondroplasia
- Author
-
Çetin T, Şıklar Z, Kocaay P, and Berberoğlu M
- Subjects
- Child, Child, Preschool, Female, Growth Disorders drug therapy, Humans, Male, Time Factors, Treatment Outcome, Body Height drug effects, Bone and Bones abnormalities, Dwarfism drug therapy, Human Growth Hormone therapeutic use, Limb Deformities, Congenital drug therapy, Lordosis drug therapy
- Abstract
Hypochondroplasia is a cause of disproportionate short stature and characterized by minor clinical manifestations. The aim of this study was to evaluate the efficacy of long-term growth hormone (GH) therapy in hypochondroplastic cases with inadequate response to GH stimulation tests. In this study, six patients who had a height standard deviation score of -3.43 before the treatment and a mean age of 7.42 years and who had received GH treatment at a dose of 0.2 mg/kg/week for a mean period of 4.45 years were evaluated. A good response was found in the first year of treatment, but this increase was not found to be sufficient for the patients to achieve an adequate final height.
- Published
- 2018
- Full Text
- View/download PDF
8. Delayed Diagnosis of a 17-Hydroxylase/17,20-Lyase Deficient Patient Presenting as a 46,XY Female: A Low Normal Potassium Level Can Be an Alerting Diagnostic Sign.
- Author
-
Çamtosun E, Şıklar Z, Ceylaner S, Kocaay P, and Berberoğlu M
- Subjects
- Adrenal Hyperplasia, Congenital blood, Adrenal Hyperplasia, Congenital genetics, Child, Preschool, Diagnosis, Differential, Disorders of Sex Development blood, Disorders of Sex Development diagnosis, Disorders of Sex Development genetics, Female, Follicle Stimulating Hormone blood, Humans, Luteinizing Hormone blood, Steroid 17-alpha-Hydroxylase genetics, Adrenal Hyperplasia, Congenital diagnosis, Delayed Diagnosis, Gonadal Dysgenesis, 46,XY, Potassium blood, Steroid 17-alpha-Hydroxylase metabolism
- Abstract
17-hydroxylase/17,20-lyase deficiency (17-OHD), a rare autosomal recessive defect in adrenal and gonadal steroidogenesis, causes absence of secondary sexual characteristics and frequently associated with hypertension and hypokalemia. Here, we report a 46,XY case who had normal potassium levels and no hypertension. Our patient was a 2.5-year-old female admitted with female external genitalia and inguinal swelling. Pathology of biopsy revealed that this gonad was a testis. Karyotype was 46,XY. She had no hypertension and no hypokalemia. Serum luteinizing hormone and follicle-stimulating hormone levels were high; testosterone, dehydroepiandrosterone sulfate, and androstenedione were low. Human chorionic gonadotrophin stimulation resulted in partial testosterone response. She was initially diagnosed as partial gonadal dysgenesis or testosterone synthesis defect. In her follow-up after noticing low normal potassium levels at age 9 years, progesterone level was measured and detected to be high. Adrenocorticotropic hormone-stimulated steroid measurements were consistent with 17-OHD. Genetic analyses revealed p. R96Q (c.287G>A) homozygous mutation on exon 1 of CYP17A1 gene. In conclusion, evaluation of 46,XY disorder of sex development patients must include serum potassium levels, and near low levels of potassium levels should also suggest 17-OHD despite absence of hypertension or remarkable hypokalemia. Testosterone synthesis defects must be excluded before establishing the diagnosis of partial gonadal dysgenesis.
- Published
- 2017
- Full Text
- View/download PDF
9. Response to Anastrozole Treatment in a Case with Peutz-Jeghers Syndrome and a Large Cell Calcifying Sertoli Cell Tumor.
- Author
-
Koç Yekedüz M, Şıklar Z, Burgu B, Kuloğlu Z, Kocaay P, Çamtosun E, İsakoca M, Kansu A, Soygür T, and Berberoğlu M
- Subjects
- Anastrozole, Aromatase Inhibitors therapeutic use, Child, Gynecomastia complications, Gynecomastia drug therapy, Humans, Male, Peutz-Jeghers Syndrome complications, Sertoli Cell Tumor complications, Testicular Neoplasms complications, Treatment Outcome, Nitriles therapeutic use, Peutz-Jeghers Syndrome drug therapy, Sertoli Cell Tumor drug therapy, Testicular Neoplasms drug therapy, Triazoles therapeutic use
- Abstract
Peutz-Jeghers syndrome (PJS) is inherited as an autosomal dominant trait characterized by multiple gastrointestinal hamartomatous polyps, mucocutaneous pigmentation, and an increased risk of neoplasm. Large-cell calcifying Sertoli cell tumor (LCCSCT) is a kind of sex cord-stromal tumor which may co-exist with PJS and which is characterized radiologically by calcification foci within the testes. Surgical treatment options for this tumor range from testis-preserving surgery to radical orchiectomy. Not with standing this invasive approach, recently, there are some case reports demonstrating the efficacy of aromatase inhibitors in avoiding orchiectomy and its associated complications. In this paper, we have presented a LCCSCT case diagnosed in a boy with PJS and his response to anastrozole treatment.
- Published
- 2017
- Full Text
- View/download PDF
10. Gonadotropin-Releasing Hormone Analogue Treatment in Females with Moderately Early Puberty: No Effect on Final Height.
- Author
-
Savaş-Erdeve Ş, Şıklar Z, Hacıhamdioğlu B, Kocaay P, Çamtosun E, Öcal G, and Berberoğlu M
- Subjects
- Child, Female, Gonadotropin-Releasing Hormone therapeutic use, Growth Disorders drug therapy, Growth Disorders etiology, Humans, Body Height drug effects, Gonadotropin-Releasing Hormone analogs & derivatives, Puberty, Precocious complications, Puberty, Precocious drug therapy
- Abstract
Objective: To investigate the effects of treatment with gonadotropin-releasing hormone analog (GnRHa) on final height in girls who experienced moderately early puberty with symptoms beginning at 7-8.5 years of age., Methods: Female cases diagnosed with moderately early puberty which had started between ages 7 to 8.5 years were included in the study. In the treatment groups, all cases with a bone age ≤10.5 years constituted group 1 (n=18) and those with a bone age >10.5 years constituted group 2 (n=23). The 8 patients for which treatment approval could not be obtained constituted group 3. The 49 cases in all three groups were observed until they reached their final height., Results: Target height, target height standard deviation score (SDS), final height, and final height SDS values were similar in all 3 groups. Final height showed a significant positive correlation with target height (p=0.000, r=0.54) and height at diagnosis (p=0.003, r=0.467) in all groups. Linear regression analysis revealed that a 1 cm longer height at diagnosis increased the final height 0.213 fold, and a 1 cm longer target height at diagnosis increased the final height 0.459 fold., Conclusion: We found that GnRHa did not make a positive contribution to final height in cases of moderately early puberty.
- Published
- 2016
- Full Text
- View/download PDF
11. The Effect of Recombinant Growth Hormone Treatment in Children with Idiopathic Short Stature and Low Insulin-Like Growth Factor-1 Levels.
- Author
-
Şıklar Z, Kocaay P, Çamtosun E, İsakoca M, Hacıhamdioğlu B, Savaş Erdeve Ş, and Berberoğlu M
- Subjects
- Adolescent, Child, Female, Follow-Up Studies, Growth Hormone administration & dosage, Humans, Insulin-Like Growth Factor I deficiency, Male, Recombinant Proteins, Treatment Outcome, Body Height drug effects, Dwarfism blood, Dwarfism drug therapy, Growth Hormone pharmacology, Insulin-Like Growth Factor I metabolism
- Abstract
Objective: Idiopathic short stature (ISS) constitutes a heterogeneous group of short stature which is not associated with an endocrine or other identifiable cause. Some ISS patients may have varying degrees of insulin-like growth factor-1 (IGF-1) deficiency. Recombinant growth hormone (rGH) treatment has been used by some authors with variable results. Reports on long-term rGH treatment are limited., Methods: In this study, 21 slowly growing, non-GH-deficient ISS children who received rGH treatment for 3.62±0.92 years were evaluated at the end of a 5.42±1.67-year follow-up period. The study group included patients with low IGF-1 levels who also responded well to an IGF generation test. The patients were divided into two groups as good responders [height increment >1 standard deviation (SD)] and poor responders (height increment <1 SD) at the end of the follow-up period., Results: The height of the patients improved from -3.16±0.46 SD score (SDS) to -1.9±0.66 SDS. At the end of the follow-up period, mean height SDS was -1.72. Eleven of the patients showed a good response to treatment. Clinical parameters were essentially similar in the good responders and the poor responders groups. A female preponderance was noted in the good responders group., Conclusion: rGH treatment can safely be used in ISS children. Long-term GH treatment will ameliorate the height deficit and almost 40% of patients may reach their target height.
- Published
- 2015
- Full Text
- View/download PDF
12. A Deep Intronic HADH Splicing Mutation (c.636+471G>T) in a Congenital Hyperinsulinemic Hypoglycemia Case: Long Term Clinical Course.
- Author
-
Çamtosun E, Flanagan SE, Ellard S, Şıklar Z, Hussain K, Kocaay P, and Berberoğlu M
- Subjects
- 3-Hydroxyacyl CoA Dehydrogenases genetics, Adolescent, Disease Progression, Electroencephalography, Female, Humans, Hyperinsulinism complications, Hyperinsulinism congenital, Hypoglycemia congenital, Hypoglycemia etiology, Infant, Newborn, Introns, Pedigree, Protein Splicing, 3-Hydroxyacyl CoA Dehydrogenases deficiency, Hyperinsulinism genetics, Hypoglycemia genetics, Metabolism, Inborn Errors genetics
- Abstract
Unlike other congenital fatty acid oxidation defects, short-chain L-3-hydroxyacyl-CoA (SCHAD, HADH) deficiency is characterised by hypoglycemia with hyperinsulinism in the neonatal or infancy periods. The long-term and detailed clinical progression of the disease is largely unknown with almost 40 patients reported and only a few patients described clinically. We present clinical and laboratory findings together with the long-term clinical course of a case with a deep intronic HADH splicing mutation (c.636+471G>T) causing neonatal-onset hyperinsulinemic hypoglycemia with mild progression.
- Published
- 2015
- Full Text
- View/download PDF
13. ROHHAD Syndrome: Reasons for Diagnostic Difficulties in Obesity.
- Author
-
Kocaay P, Şıklar Z, Çamtosun E, Kendirli T, and Berberoğlu M
- Subjects
- Adolescent, Female, Humans, Syndrome, Autonomic Nervous System Diseases diagnosis, Hypothalamic Diseases diagnosis, Hypoventilation diagnosis, Obesity diagnosis
- Abstract
A very rare syndrome of rapid-onset obesity with hypoventilation, hypothalamic dysfunction and autonomic dysregulation (ROHHAD) has been recently described as causing morbidity due to hypothalamic dysfunction and respiratory arrest. Its prognosis is poor and often cardiac arrest occurs due to alveolar hypoventilation. This disorder can mimic genetic obesity syndromes and several endocrine disorders. We present a 13-year-old female patient who was reported to be healthy until the age of 3 years. She was admitted to our emergency department, presenting with respiratory distress. Features matching ROHHAD syndrome such as rapid-onset obesity, alveolar hypoventilation, central hypothyroidism, hyperprolactinemia, Raynaud phenomenon and hypothalamic hypernatremia were detected in the patient. In addition to these features, the patient was found to have hypergonadotropic hypogonadism and megaloblastic anemia. Because of its high mortality and morbidity, the possibility of ROHHAD syndrome needs to be considered in all pediatric cases of early- and rapid-onset obesity associated with hypothalamic-pituitary endocrine dysfunction.
- Published
- 2014
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.