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Featured researches published by Sadik Toprak.


Psychiatry Research-neuroimaging | 2011

Self-harm, suicidal ideation and suicide attempts among college students

Sadik Toprak; İlhan Çetin; Taner Guven; Gunay Can; Cetin Demircan

Self-harm, suicidal ideation, and suicide attempts are well represented behaviours in the general population of both developed and developing countries. These behaviours are indicative of underlying risk factors that show a strong interdependent correlation. In this study we attempted to define correlates for and prevalence of self-harm, suicidal ideation, and suicide attempts among Turkish college students. This 2006 study included 636 students from two Turkish state universities. Our results showed that the lifetime prevalence of self-harm was 15.4%, the prevalence of suicidal ideation was 11.4%, and the prevalence of suicide attempts was 7.1%. We uncovered correlates for self-harm, including low income, unsatisfying familial relationships, smoking, and alcohol, inhalant, and tranquilizer abuse. Tranquilizer abuse shared a dual role as a correlate for suicide ideation and as a means to attempt suicide. Additionally, we found that drug abusers and adolescents who practise self-harm presented the highest suicide risk.


International Journal of Pediatric Otorhinolaryngology | 2011

Vitamin D levels in children with recurrent tonsillitis

Salih Aydin; Ismet Aslan; Ismail Yildiz; Bedia Agachan; Bahar Toptas; Sadik Toprak; Kemal Deger; Mehmet Faruk Oktay; Emin Ünüvar

AIM Although recurrent tonsillitis can be the consequence of defects in immune system, the exact etiology of recurrent tonsillitis is not clear. In this study, our aim was to determine the serum vitamin D levels and vitamin D receptor polymorphism among children undergone tonsillectomy due to the recurrent tonsillitis. METHODS A 106 children undergone tonsillectomy due to recurrent tonsillitis and a 127 healthy children aging between 2 and 12 years were enrolled in this study, to determine serum 25-hydroxyvitamin D level and vitamin D receptor gene polymorphisms (Apa1, Taq 1, fok1). Serum vitamin D level was measured with ELISA (nmol/L) and receptor gene polymorphism was determined by PCR. Vitamin D serum level below 80nmol/L was accepted as insufficient. RESULTS The average serum vitamin D level was 176±79nmol/L in recurrent tonsillitis group and 193±56nmol/L in control group. There was no significant difference between the groups (p=0.13). In recurrent tonsillitis group, 18% (n=15) of children had their serum vitamin D levels below 80nmol/L. The vitamin D receptor gene polymorphism (APA1, TAQ 1, FOK 1) in each group was compared (AA, Aa, aa, TT, Tt, tt, FF, Ff, ff). There was no significant difference between the two groups. The vitamin D serum levels and receptor sub-genotypes are also compared, and there was no significant difference between the groups. CONCLUSION There is no difference between the serum vitamin D level and receptor gene polymorphism among children with recurrent tonsillitis and healthy children. But vitamin D insufficiency is more prevalent in children with recurrent tonsillitis group (18%).


Italian Journal of Pediatrics | 2012

The role of vitamin D in children with recurrent Tonsillopharyngitis

Ismail Yildiz; Emin Ünüvar; Umit Zeybek; Bahar Toptas; Canan Cacina; Sadik Toprak; Ayse Kilic; Salih Aydin

BackgroundThe exact etiology of recurrent tonsillopharyngitis in children is not clear. Recurrent tonsillitis in children has multifactorial etiology like most of the diseases in childhood. In this study, our aim was to determine the potential role of vitamin D in recurrent tonsillitis by measuring serum 25-OH vitamin D levels and determining the vitamin D receptor polymorphism among children with recurrent tonsillitis.MethodsEighty-four children with recurrent tonsillitis and seventy-one healthy children aging between 2 and 10 years were enrolled in this study. Serum 25-OH vitamin D level was measured with ELISA and vitamin D receptor gene polymorphism (Apa1, Taq 1, Fok1) was determined by PCR. Serum 25-OH vitamin D level below 50 nmol/L was accepted as deficiency. The vitamin D receptor gene polymorphism in each group was compared.ResultsThe mean age was 5.6 ± 2.4 and 6.1 ± 2.7 years in study and control group, respectively. The average serum 25-OH vitamin D level was 142.7 ± 68.1 nmol/L in study group and 192.3 ± 56.1 nmol/L in control group. There was significant difference between the groups (p < 0.01). In study group, 4.7% (n = 4) of children had serum 25 OH vitamin D levels below 50 nmol/L. None of the children in control group had serum 25-OH vitamin D level below 50 nmol/L. There was no significant differences in vitamin D receptor gene polymorphisms between groups.ConclusionSerum 25-OH vitamin D levels in recurrent tonsillitis group were lower than those in healthy children. But, there was no difference in the incidence of vitamin D receptor gene polymorphism between the two groups.


Journal of Pediatric Gastroenterology and Nutrition | 2014

Role of vitamin D in children with hepatosteatosis.

Ismail Yildiz; Oğuz Bülent Erol; Sadik Toprak; Mustafa S. Cantez; Beyhan Omer; Ayse Kilic; Fatma Oguz; Metin Uysalol; Ensar Yekeler; Emin Ünüvar

Background: The increasing incidence of obesity in children is a significant risk factor for nonalcoholic fatty liver disease and obesity-associated morbidity. Vitamin D has a major role in bone mineral metabolism and has antimicrobial, antioxidant properties. In this study we aimed to investigate the role of vitamin D in children with obesity with hepatosteatosis. Methods: A total of 101 children with obesity were included in this study. Hepatosteatosis was diagnosed and graded using ultrasonography. Serum levels of 25-hydroxyvitamin D (25-(OH) vitamin D), calcium, phosphate, alkaline phosphatase, and parathormone were tested. Two-sided t test and Pearson &khgr;2 tests were used for the relation between vitamin D and hepatosteatosis. Results: In our study group, 45.5% were girls (n = 46) and the mean age was 11.5 ± 2.8 years (range 3–17 years). Hepatosteatosis was identified in 58 children (57.4%). The diagnosis of grade 1 and grade 2 hepatosteatosis was made in 41 (40.6%) and 17 (16.8%) children, respectively. Median serum 25-(OH) vitamin D levels in children without hepatosteatosis was 16.4 ng/mL (interquartile range 12.4–24.8 ng/mL), whereas children with grade 1 and grade 2 hepatosteatosis had 25-(OH) vitamin D levels of 14.2 ng/mL (interquartile range 9.5–21.2 ng/mL) and 11.5 ng/mL (interquartile range 7.5–16.7 ng/mL), respectively (P = 0.005). There was a positive correlation between insulin resistance and the grade of hepatosteatosis (P = 0.03). Conclusions: Serum vitamin D levels in children with obesity with hepatosteatosis are significantly lower than vitamin D levels in children with obesity without hepatosteatosis. In this observational study we only refer to the association of vitamin D deficiency/insufficiency with hepatosteatosis.


International Journal of Pediatric Otorhinolaryngology | 2016

Cervical lymphadenopathies in children: A prospective clinical cohort study.

Serdar Bozlak; Muhammet Ali Varkal; Ismail Yildiz; Sadik Toprak; Serap Karaman; Oğuz Bülent Erol; Ensar Yekeler; Aysegul Unuvar; Ayse Kilic; Fatma Oguz; Emin Ünüvar

AIM Cervical lymphadenopathy (LAP) is a common sign and may raise fears about serious illnesses. The aim of our study was to evaluate the patients with cervical LAPs in a general pediatrics clinic setting, and to evaluate follow-up results for potential causes and risk factors for malignancies. MATERIAL AND METHODS Two hundred-eighteen patients aged between 79.4±46.7 months with LAP were enrolled in this prospective cohort study. The patients were examined in terms of demographics, clinical, radiologic and serologic aspects like Epstein-Barr virus (EBV), cytomegalovirus (CMV), parvovirus B19. A lymph node biopsy was performed in selected patients. The patients were followed-up for 8 weeks and risk factors for malignancy were evaluated. RESULTS Seventy patients (41.3%) had specific etiology and 6 (2.7%) had malignant causes. The causes were as follows: 27% (n=59) infections; 2.7% (n=6) malignancies; 11.4% (n=25) other causes. EBV was responsible for 27% of infectious causes. The other common infectious etiologies were CMV 4.3%, parvovirus B-19 2.9%, and group-A beta-hemolytic streptococcus (GAS) 10.8%. Four of the six malignancies were lymphomas. Predictive factors for malignancy were having LAP larger than 30mm, rubbery lymph node, high serum CRP and LDH values, no hilum in ultrasonography, and enlargement of lymph node in follow-up. High uric acid levels and leucopenia were also common in the malignancy group. CONCLUSION Etiology of cervical LAPs was diagnosed in 41.3% patients. Infectious causes were the most common cause with 27%. Malignancy was diagnosed in 2.7% and lymphoma was the most common malignancy.


Journal of Forensic and Legal Medicine | 2015

The pathology of lethal exposure to the Riot Control Agents: Towards a forensics-based methodology for determining misuse

Sadik Toprak; Gökhan Ersoy; John Hart; Peter Clevestig

The aim of this is to review deaths associated with the use of Riot Control Agents (RCAs) and to assess how the presenting pathologies is such cases may better inform cause of death conclusions upon autopsy. We also sought to present which additional steps should be added to the Minnesota protocol and the European harmonization of medico-legal autopsy rules in suspected cases of deaths associated with the use of RCAs. We included 10 lethal cases in our study. In three cases, RCAs were found to be the sole cause of death, in three cases RCAs were ruled a secondary cause of death due asphyxia or asthma subsequent to exposure to RCAs and in four cases RCAs were contributory factors to death. In three cases the responsible agents were identified as Chloroacetophenone (CN), Chlorobenzylidene malononitrile (CS) and Oleoresin capsicum (OC) and in the remaining 7 cases, the agent was OC alone. As there are no specific findings in suspected cases of death associated with RCA use, establishing cause of death and whether RCAs are the sole cause or only a contributory factor will be based on the elimination of other possible causes of death. For this reason, a specifically structured autopsy is essential. This specifically structured autopsy should contain basic principles of the Minnesota Protocol and the European harmonization of medico-legal autopsy rules with the following additional steps taken: examination of clothing, eyes, and skin; examination of pharyngeal, tracheobronchial, and eusophegeal mucosas; and a thorough recording of the steps taken by the party conducting the arrest, including other possible causes of in-custody death, as well as a detailed medical history of the deceased.


Pediatric Emergency Care | 2016

Axillary and Tympanic Temperature Measurement in Children and Normal Values for Ages.

Fatma Oguz; Ismail Yildiz; Muhammet Ali Varkal; Zeynep Hizli; Sadik Toprak; Kevser Kaymakci; Seha Saygili; Ayse Kilic; Emin Ünüvar

Aim The aim of the study was define the normal values of tympanic and axillary body temperature in healthy children. Methods This observational cross-sectional study was performed in healthy children aged 0 to 17 years who visited the ambulatory general pediatric of Istanbul Medical Faculty. Results Of 1364 children, 651 (47.7%) were girls and 713 were boys, the mean (SD, range) age was 72.5 (53.6, 1–204) months. The mean (SD) axillary body temperature was 36.04°C (0.46°C; minimum, 35.0°C; maximum, 37.6°C). The 95th and 99th percentiles were 36.8°C and 37.0°C, respectively. The mean (SD) tympanic body temperature was 36.91°C (0.46°C; minimum, 35.15°C; maximum, 37.9°C). The 95th and 99th percentiles were 37.6°C and 37.8°C, respectively. There were statistically significant differences between sexes for only tympanic body temperatures. Both axillary and tympanic body temperatures were statistically higher in 0 to 2 months compared with other age groups. For this age group, the 99th percentile was 37.5°C for axillary and 37.85°C for tympanic temperature. Conclusions Axillary and tympanic body temperatures should be considered as fever when they are more than 37.0°C and 37.8°C, respectively. For 0 to 2 months, fever is 37.5°C and 37.85°C in axillary and tympanic temperatures, respectively.


Science of The Total Environment | 2007

Mercury levels in cord blood and meconium of healthy newborns and venous blood of their mothers: Clinical, prospective cohort study

Emin Ünüvar; Hasan Ahmadov; Ali Riza Kiziler; Birsen Aydemir; Sadik Toprak; Volkan Ulker; Cemal Ark


Turkish Journal of Medical Sciences | 2009

Viral etiology and symptoms of acute upper respiratory tract infections in children.

Emin Ünüvar; Ismail Yildiz; Ayse Kilic; Seyhan Selvi Aslan; Bülent Çakal; Sadik Toprak; Selim Badur; Fatma Oğuz; Müjgan Sıdal


International Journal of Pediatric Otorhinolaryngology | 2007

Is acetaminophen as effective as an antihistamine—decongestant—acetaminophen combination in relieving symptoms of acute nasopharyngitis in children? A randomised, controlled trial

Emin Ünüvar; Ismail Yildiz; Ayse Kilic; Sadik Toprak; Seyhan Selvi Aslan; Salih Aydin; Selim Badur; Fatma Oguz; Müjgan Sıdal

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