İsmail Dündar

Prof. Dr. İsmail Dündar

orcid

Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
17 January 2022 in Journal of Pediatric Endocrinology and Metabolism
Verified
Journal Article
Closed access
İDİsmail Dündar
İsmail Dündar
AAAyşehan Akıncı
Ayşehan Akıncı
Objectives: The aim of the study was to determine the prevalence of metabolic syndrome (MetS), type 2 diabetes mellitus (T2DM), and other comorbidities in overweight and obese children in Malatya, Turkey. Methods: Retrospective cross-sectional study. We studied 860 obese and overweight children and adolescents (obese children Body mass index (BMI) >95th percentile, overweight children BMI >85th percentile) aged between 6 and 18 years. The diagnosis of MetS, impaired glucose tolerance (IGT), impaired fasting glucose (IFG), and T2DM were defined according to modified the World Health Organization criteria adapted for children. Other comorbidities were studied. Results: Subjects (n=860) consisted of 113 overweight and 747 obese children of whom 434 (50.5%) were girls. MetS was significantly more prevalent in obese than overweight children (43.8 vs. 2.7%, p<0.001), and in pubertal than prepubertal children (41.1 vs. 31.7%, p<0.001). Mean homeostasis model assessment for insulin ratio (HOMA-IR) was 3.6 ± 2.0 in the prepubertal and 4.9 ± 2.4 in pubertal children (p<0.001). All cases underwent oral glucose tolerance test and IGT, IFG, and T2DM were diagnosed in 124 (14.4%), 19 (2.2%), and 32 (3.7%) cases, respectively. Insulin resistance (IR) was present in 606 cases (70.5%). Conclusions: Puberty and obesity are important risk factors for MetS, T2DM, and IR. The prevalence of MetS, T2DM, and other morbidities was high in the study cohort. Obese children and adolescents should be carefully screened for T2DM, insulin resistance, hyperinsulinism, dyslipidemia, hypertension, IGT, and IFG. The prevention, early recognition, and treatment of obesity are essential to avoid associated morbidities.

26 February 2021 in Journal of Clinical Research in Pediatric Endocrinology
Verified
Journal Article
Open access
PDF file
EÇemine çamtosun
emine çamtosun
İDİsmail Dündar
İsmail Dündar
AAAyşehan Akıncı
Ayşehan Akıncı
LKLeman Kayaş
Leman Kayaş
NÇNurdan Çiftci
Nurdan Çiftci
Primary adrenal insufficiency (PAI) is a rare but potentially life-threatening condition. In childhood, PAI is usually caused by monogenic diseases. Although congenital adrenal hyperplasia (CAH) is the most common cause of childhood PAI, numerous non-CAH genetic causes have also been identified. Patients aged 0-18 years and diagnosed with PAI between 1998 and 2019 in a tertiary care hospital were retrospectively evaluated. After the etiologic distribution was determined, non-CAH PAI patients were evaluated in detail. Seventy-three PAI patients were identified. The most common etiology was CAH (69.9%, n=51). Non-CAH etiologies accounted for 30.1% (n=22) and included adrenoleukodystrophy (ALD; n=8), familial glucocorticoid deficiency (n=3), Triple A syndrome (n=5), autoimmune adrenalitis (n=1), adrenal hypoplasia congenital (n=1), IMAGe syndrome (n=1), and other unknown etiologies (n=3). The median age at the time of AI diagnosis for non-CAH etiologies was 3.52 (0.03-15.17) years. The most frequent symptoms/clinical findings at onset were hyperpigmentation of skin (81.8%), symptoms of hypoglycemia (40.9%), and weakness/fatigue (31.8%). Hypoglycemia (50.0%), hyponatremia (36.4%) and hyperkalemia (22.7%) were prominent biochemical findings. Diagnosis of specific etiologies were proven genetically in 13 of 22 patients. A novel p.Q301* hemizygous frameshift mutation of the DAX1 gene was identified in one patient. Etiology was determined in 86.3% of children with non-CAH PAI through specific clinical and laboratory findings with/without molecular analysis of candidate genes. ALD was the most common etiology. Currently, advanced molecular analysis can be utilized to establish a specific genetic diagnosis for PAI in patients who have no specific diagnostic features.

23 December 2024 in Journal of Clinical Research in Pediatric Endocrinology
Verified
Journal Article
Open access
SGSevinç Odabaşı Güneş
Sevinç Odabaşı Güneş
IKİlknur Kaba
İlknur Kaba
EÜEdip Ünal
Edip Ünal
ABAyşe Derya Buluş
Ayşe Derya Buluş
İDİsmail Dündar
İsmail Dündar
ZSZeynep Siklar
Zeynep Siklar
Journal of Clinical Research in Pediatric Endocrinology

9 March 2023 in Cureus
Verified
Journal Article
Open access
PDF file
İDİsmail Dündar
İsmail Dündar
AAAysehan Akinci
Aysehan Akinci
Background: The increasing prevalence of childhood obesity and accompanying comorbidities all over the world constitutes one of the most important public health problems of the changing world. The frequency and causes of the metabolically healthy obesity (MHO) phenotype in children is not clear. Objective: The objective is to determine the prevalence of the MHO phenotype in obese Turkish children and adolescents and to identify clinical and biochemical indicators for this phenotype. Methods: Eight hundred forty-seven obese children and adolescents, aged 3-18 years with BMI-SDS >+2 SD from the obesity outpatient clinic were included. Demographic, anthropometric, and physical examination information was collected from patient medical files. In addition, obesity-related comorbidities and results of laboratory tests were obtained. For study purposes, obese patients with no cardiometabolic risk factors were accepted as MHO, and those with ≥1 cardiometabolic risk factor were considered metabolically unhealthy obese (MUO). MHO was defined according to Damanhoury's criteria. Results: Out of 847 children (mean age 10.6±3.4 years) who met the study criteria, 289 (34.1%) were diagnosed with MHO. Being younger, prepubertal, having relatively low BMI, low waist/hip ratio, low insulin resistance (HOMA-IR) index, high high-density lipoprotein, low triglyceride, low fasting insulin and glucose levels, low uric acid and low alanine transaminase (ALT) levels were associated with MHO. Conclusions: The MHO phenotype was present in just over a third of this obese pediatric cohort. The most important factors associated with MHO; age, waist-hip ratio, and BMI were determined.

1 September 2023 in Turkish Archives of Pediatrics
Verified
Journal Article
Open access
İDİsmail Dündar
İsmail Dündar
AAAysehan Akinci
Aysehan Akinci
EÇemine çamtosun
emine çamtosun
LKLeman Kayas
Leman Kayas
NÇNurdan Çiftci
Nurdan Çiftci
EÖErdener Özçetin
Erdener Özçetin
Type 1 diabetes mellitus,epidemiology,incidence,pediatrics,trends

26 April 2024 in Journal of Clinical Research in Pediatric Endocrinology
Verified
Journal Article
Open access
ZSZeynep Siklar
Zeynep Siklar
EÖElif Özsu
Elif Özsu
SÇSirmen Kızılcan Çeti̇n
Sirmen Kızılcan Çeti̇n
SÖSamim Özen
Samim Özen
FÇFiliz Çizmecioğlu-Jones
Filiz Çizmecioğlu-Jones
HKHuseyin Anıl Korkmaz
Huseyin Anıl Korkmaz
Craniopharyngiomas (CPG) have complex challenges in treatment due to their proximity to vital structures, surgical and radiotherapeutic complexities, and the tendency for recurrence. This study aims to identify the prevalence of endocrine and metabolic comorbidities observed during initial diagnosis and long-term follow-up in a nationwide cohort of pediatric CPG patients. The study also highlights the associated difficulties in their management. Sixteen centers entered 152 patients into the ÇEDD NET data system. We evaluated the clinical and laboratory characteristics at presentation, administered treatments, accompanying endocrine, metabolic, and other system involvements, and the patient's follow-up features. Of the evaluated patients, 64 were female, and 88 were male. At presentation, the mean age was 9.1 ± 3.67 (min:1.46-max:16.92) years. The most common complaints at presentation were headache (68.4%), vision problems (42%), short stature (15%), nausea and vomiting (7%). The surgical procedure applied to the patients was gross total resection (GTR) in 97 cases (63.8%) and subtotal resection in 55 cases (36.2%). Radiotherapy was initiated in 11.8% of the patients. In the pathological examination, 92% of the cases were adamantinamatous type, 8% were papillary type. Postoperatively, hormone deficiencies consisted of thyroid-stimulating hormone (92.1%), adrenocorticotropic hormone (81%), antidiuretic hormone (79%), growth hormone (65.1%), and gonadotropin (43.4%) deficiencies. Recombinant growth hormone treatment (rhGH) was initiated on 27 patients. The study showed hesitancy among physicians regarding rhGH. The median survival without relapse was 2.2 years. Median time of relapse was 1.82 years (range: 0.13-10.35 years). Relapse was related to longer follow-ups and reduced GTR rates. The median follow-up time was 3.13 years. Among the last follow-up visits, the prevalence of obesity was 38%, but of these, 46.5% were already obese at diagnosis. However, 20% who were not obese at baseline became obese on follow-up. Permanent visual impairment was observed in 26 patients, neurological deficits in 13 patients, and diabetes mellitus in 5 patients. Recurrence was predominantly due to incomplete resection and the low rate of postoperative radiotherapy. It also emphasized challenges in multidisciplinary regular follow ups and suggested early interventions such as dietary restrictions and increased exercise to prevent obesity.