1
|
Doğan S, Çolak A. Social robots in the instruction of social skills in autism: a comprehensive descriptive analysis of single-case experimental designs. Disabil Rehabil Assist Technol 2024; 19:325-344. [PMID: 35758001 DOI: 10.1080/17483107.2022.2087772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 06/04/2022] [Indexed: 10/17/2022]
Abstract
PURPOSE The rapid technological advances, the traits of individuals with ASD and their interest in technology are promising for the instruction of social skills to individuals with autism spectrum disorder (ASD) using various technological interventions. Robotic interventions are among these. However, although robotics is frequently used with individuals with ASD, there is a limited number of reviews on social skills instruction and methods. The present study aimed to conduct a comprehensive descriptive analysis on single-case experimental designs where social skills were instructed to individuals with ASD and social robots were included as independent variables. MATERIALS AND METHODS Thirteen single-case experimental designs published in peer-reviewed journals in which social skills were taught to individuals with ASD using social robots were reviewed with a comprehensive descriptive analysis based on five categories: (a) key characteristics, (b) methodological characteristics, (c) findings, (d) data analysis, and (e) key parameters in single-case experimental designs. RESULTS Social robots are generally effective in the instruction of social skills. Several social skills (e.g., making eye contact, social interaction, simple greetings) were instructed in the studies. Humanoid robots and NAO were used generally. The study data were predominantly analyzed statistically. There were several problems in research based on the basic parameters in single-case experimental designs. CONCLUSIONS The researches in this study differ in several respects (e.g., results, data analysis, and dependent variable). Thus, there is still a need for several robotics studies in the instruction of social skills. IMPLICATIONS FOR REHABILITATIONThis study will be a guide for teachers who currently use robots in their classrooms but do not know which skills to use in teaching and how to use them functionally, as it shows applied research with robots.The findings of this research will show implementers working with children with ASD that technological tools can be used in rehabilitation environments, and that teachers can take a place in their robots in interventions for children with ASD, giving them a different perspective.It will be seen that the education of children with ASD is not only 1:1 and with humans, but robots can also provide education. In this way, the power of technology in teaching will become clearer. Especially in rehabilitation.Finally, this research will offer new options in teaching especially for teachers who aim at teaching social skills and will give them the opportunity to comprehensively examine the processes of different studies on these subjects.
Collapse
Affiliation(s)
- Serap Doğan
- Department of Special Education, Faculty of Education, Gaziantep University, Gaziantep, Turkey
| | - Aysun Çolak
- Department of Special Education, Faculty of Education, Anadolu University, Eskisehir, Turkey
| |
Collapse
|
2
|
Diken ME, Koçer Kizilduman B, Doğan S, Doğan M. Antibacterial and antioxidant phenolic compounds loaded
PCL
biocomposites for active food packaging application. J Appl Polym Sci 2022. [DOI: 10.1002/app.52423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mehmet Emin Diken
- Science and Technology Application and Research Center Balikesir University Balikesir Turkey
| | - Berna Koçer Kizilduman
- Science and Technology Application and Research Center Balikesir University Balikesir Turkey
| | - Serap Doğan
- Department of Molecular Biology and Genetics, Faculty of Science and Literature Balikesir University Balikesir Turkey
| | - Mehmet Doğan
- Department of Chemistry, Faculty of Science and Literature Balikesir University Balikesir Turkey
| |
Collapse
|
3
|
Kanat BH, Solmaz ÖA, Bozdağ P, Doğan S, Kutluer N, Kurt F, Yazar FM, Aydin Y, Öndes B. Chronic appendicitis: the process from pre-diagnosis to pathology. Eur Rev Med Pharmacol Sci 2021; 25:7898-7902. [PMID: 34982452 DOI: 10.26355/eurrev_202112_27639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE Chronic appendicitis (CA) is a rare medical condition. CA is characterized by a less severe and almost continuous abdominal pain. It has a clinical picture lasting longer than 1-2 days and extending over weeks, months, even years. The exact etiology of CA is unclear. Certain resources have reported it as the cause of partial obstruction in the lumen of the appendix. PATIENTS AND METHODS Our study was carried out with the approval of the Clinical Research Ethics Committee. A retrospective analysis was performed between August 2018 and March 2020. RESULTS It was determined that 207 appendectomies were performed during the retrospective scan period. The data of 182 of these patients could be accessed fully and we could get answers to the criteria we thought. Only 8 of the patients screened were likely to be diagnosed with chronic appendicitis in the preoperative period. CA was found in 1 of the 8 patients (12.5%) who underwent surgery after a preliminary diagnosis of CA. Two patients were reported as malignant (25%), 3 patients (37.5%) as reactive lymphoid hyperplasia, and 1 patient as peri appendicitis (12.5%). Bleeding and congestion were reported in the last patient (12.5%). CONCLUSIONS The diagnosis of chronic appendicitis is made by pathological examination. It may not always be possible to consider "chronic appendicitis" as a preliminary diagnosis. This should still be kept in mind. In our opinion, it is a bit difficult to make a preliminary diagnosis of chronic appendicitis and make a surgical decision. We believe that controlled and prospective studies can shed more light on chronic appendicitis.
Collapse
Affiliation(s)
- B H Kanat
- Malatya Turgut Özal University Training and Research Hospital, Malatya, Turkey.
| | | | | | | | | | | | | | | | | |
Collapse
|
4
|
Diken ME, Doğan S, Doğan M, Turhan Y. Synthesis and characterization of poly(acrylic acid)/nanohydroxyapatite nanocomposite hydrogels and evaluation of its antibacterial, bio- and hemo-compatibility characteristics. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2021.1981320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Mehmet Emin Diken
- Science and Technology Application and Research Center, Balikesir University, Çağış-Balikesir, Turkey
| | - Serap Doğan
- Faculty of Science and Literature, Department of Molecular Biology and Genetics, Balikesir University, Cagis-Balikesir, Turkey
| | - Mehmet Doğan
- Faculty of Science and Literature, Department of Chemistry, Balikesir University, Cagis-Balikesir, Turkey
| | - Yasemin Turhan
- Faculty of Science and Literature, Department of Chemistry, Balikesir University, Cagis-Balikesir, Turkey
| |
Collapse
|
5
|
Doğan M, Akıcı N, Diken ME, Doğan S, Yilmaz Kardas B, Dirmenci T. Biological activities of some Salvia species. Z NATURFORSCH C 2021; 77:133-143. [PMID: 34547196 DOI: 10.1515/znc-2021-0136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 08/19/2021] [Indexed: 11/15/2022]
Abstract
In this study, total phenolic, flavonoid and protein contents, antiradical capacities, antibacterial and cytotoxic properties of five different Salvia species (Salvia macrochlamys Boiss., Salvia kronenburgii Rech.f., Salvia euphratica Montbret. ex Aucher var. euphratica, Salvia huberi Hedge and Salvia kurdica Benth) were investigated. The total phenolic content of the species was in the range of 59.6 ± 20 to 150.1 ± 1.1 mg/g, total flavonoid content in the range of 20.4 ± 2.2 to 38.9 ± 4.1 mg/g, and total protein content in the range of 14.0 ± 0.5 to 22.0 ± 1.1 mg/g. Radical scavenging capacities of the Salvia species were determined in the range of 84.1 ± 4.5 to 96.8 ± 0.1%. Moreover, Salvia extracts showed powerful antibacterial activity against Escherichia coli and Staphylococcus aureus bacteria. Cytotoxic effects of the samples on human lymphocytes were determined by MTS assay and S. kronenburgii and S. euphratica var. euphratica decreased the harmful effects of 2-hydroperoxy-2-methylpropane (tert-butyl hydroper-oxide, t-BOOH) at all time points tested. The highest amounts of rutin hydrate belong to S. kronenburgii and S. euphratica var. euphratica, and the highest amounts of luteolin-7-glucoside belong to S. huberi and S. kronenburgii. Vanillic acid was present only in S. huberi and S. kurdica.
Collapse
Affiliation(s)
- Mehmet Doğan
- Department of Chemistry, Faculty of Science and Literature, Balikesir University, 10145 Balıkesir, Turkey
| | - Nurdan Akıcı
- Department of Chemistry, Faculty of Science and Literature, Balikesir University, 10145 Balıkesir, Turkey
| | - Mehmet Emin Diken
- Science and Technology Application and Research Center, Balıkesir University, Balıkesir, Turkey
| | - Serap Doğan
- Department of Molecular Biology and Genetics, Faculty of Science and Literature, Balikesir University, 10145 Balıkesir, Turkey
| | - Begumhan Yilmaz Kardas
- Department of Molecular Biology and Genetics, Faculty of Science and Literature, Balikesir University, 10145 Balıkesir, Turkey
| | - Tuncay Dirmenci
- Department of Biology, Faculty of Necatibey Education, Balikesir University, Balıkesir, Turkey
| |
Collapse
|
6
|
Doğan S, Özcan T, Doğan M, Turhan Y. The effects on antioxidant enzymes of PMMA/hydroxyapatite nanocomposites/composites. Enzyme Microb Technol 2020; 142:109676. [PMID: 33220864 DOI: 10.1016/j.enzmictec.2020.109676] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 09/20/2020] [Accepted: 09/21/2020] [Indexed: 11/29/2022]
Abstract
In this study, polymer-ceramic nanocomposites and/or composites were prepared by solution removal method using poly(methylmethacrylat) (PMMA) and nano-hydroxyapatite (nHA). They were characterized using X-ray diffraction (XRD), Fourier transform infrared-attenuated total reflection spectroscopy (FTIR-ATR), and differential thermal analysis/thermogravimetry (DTA/TG). Their effects and biocompatibilities on antioxidant enzymes were also investigated in detail. It has been shown that nHA was dramatically dispersed at nanoscale in the polymer matrix. The interaction occurred between OH groups of nHA and carbonyl groups of polymer and introduction of ceramic into the polymer matrix generally resulted in an increase in thermal stability. Nanocomposites and composites had different effects on enzyme activities. Samples synthesized in acetone increased enzyme activities for glutathione reductase (GR) and glucose-6 phosphate dehydrogenase (G6PD) enzymes, while inhibiting glutathione peroxidase (GPx) and catalase (CAT) enzyme activities. On the other hand, samples synthesized in tetrahydrofuran (THF) exhibited inhibitory behavior for G6PD and CAT enzymes. The samples synthesized in different media did not show any regularity on enzyme activities. The nanocomposites and/or composites prepared in acetone media were better hemocompatible than those in THF.
Collapse
Affiliation(s)
- Serap Doğan
- Balıkesir University, Faculty of Science and Literature, Department of Molecular Biology and Genetic, Balıkesir, Turkey.
| | - Taner Özcan
- Balıkesir University, Faculty of Necatibey Education, Department of Biology Education, Balıkesir, Turkey
| | - Mehmet Doğan
- Balıkesir University, Faculty of Science and Literature, Department of Chemistry, Balıkesir, Turkey
| | - Yasemin Turhan
- Balıkesir University, Faculty of Science and Literature, Department of Chemistry, Balıkesir, Turkey
| |
Collapse
|
7
|
Doğan S, Vural A, Kahriman G, İmamoğlu H, Abdülrezzak Ü, Öztürk M. Non-squamous cell carcinoma diseases of the larynx: clinical and imaging findings. Braz J Otorhinolaryngol 2020; 86:468-482. [PMID: 30956151 PMCID: PMC9422427 DOI: 10.1016/j.bjorl.2019.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 12/19/2018] [Accepted: 02/05/2019] [Indexed: 02/02/2023] Open
Abstract
Introduction Squamous cell carcinoma is the most common laryngeal neoplasm and accounts for approximately 95% of all malignant neoplams of the larynx. However, various benign and malignant tumors and inflammatory diseases may affect the larynx. Objective The purpose of this study is to analyze the clinical and imaging findings of non-squamous cell neoplasms and inflammatory diseases of the larynx. Methods This retrospective study was conducted in 18 patients who were diagnosed with non-squamous cell carcinoma lesions of larynx at our institution between 2007-2017. Clinical symptoms, examination findings, imaging characteristics, histopathologic diagnosis and treatment modalities were analyzed. Results There were 9 malignant lesions (2 chondrosarcoma, 1 neuroendocrine tumor-atipical carcinoid, 1 Natural Killer/T-cell lymphoma, 1 diffuse large B-cell lymphoma, 3 plasmocytoma-multiple myeloma involvement, 1 adenocarcinoma metastasis), 3 benign neoplasms (chondroma, paraganglioma, lipoma), 2 tumor-like lesions (Brown tumor and inflammatory myofibroblastic tumor), 3 inflammatory lesions (Wegener granulomatosis, Behçet's disease and tuberculosis involvements), and 1 vascular malformation. The most common presenting symptom was hoarseness (66.6%). Paraganglioma was seen as hypervascular lesion on computed tomography and magnetic resonance imaging and showed intense tracer uptake on 68Gallium-DOTA-peptide PET/CT. Chondroid matrix calcifications were detected in chondroma and chondrosarcoma-grade 1. In patients with vascular malformation and lipoma, the typical imaging findings made it possible to diagnose. Conclusion Imaging studies may provide clues for diagnosis of non-squamous cell laryngeal lesions. Clinical and imaging findings and previous clinical history should be evaluated together in clinical management of laryngeal lesions.
Collapse
|
8
|
Diken ME, Kizilduman BK, Yilmaz Kardaş B, Doğan EE, Doğan M, Turhan Y, Doğan S. Synthesis, characterization, and their some chemical and biological properties of PVA/PAA/nPS hydrogel nanocomposites: Hydrogel and wound dressing. J BIOACT COMPAT POL 2020. [DOI: 10.1177/0883911520921474] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The nanocomposite hydrogels were prepared by dispersing of the nanopomegranate seed particles into poly(vinyl alcohol)/poly(acrylic acid) blend matrix in an aqueous medium by the solvent casting method. These hydrogels were characterized using scanning electron microscopy, Fourier transform infrared spectra, differential scanning calorimetry, and optical contact angle instruments. The nanopomegranate seed, blend, and hydrogel nanocomposites were tested for microbial activity. In addition, cytocompatibilities of these blend and hydrogel nanocomposites/composites were tested on human lymphocyte with in vitro MTS cell viability assays. Fourier transform infrared spectra revealed that esterification reaction took place among functional groups in the structure of poly(vinyl alcohol) and poly(acrylic acid). The hydrophilic properties of all hydrogels decreased with increasing nanopomegranate seed content. The mean diameters of the nanopomegranate seed particles were about 88 nm. Nanopomegranate seed particles demonstrated antibacterial properties against gram-positive bacteria, Staphylococcus aureus, and gram-negative bacteria, Escherichia coli. The lymphocyte viabilities increased after addition of nanopomegranate seeds into the polymer blend. The swelling behavior of blend and hydrogels was dependent on the cross-linking density created by the reaction between poly(vinyl alcohol)/poly(acrylic acid) blend and nanopomegranate seed. Scanning electron microscopy images were highly consistent with Fourier transform infrared spectra, differential scanning calorimetry, and antibacterial activity results.
Collapse
Affiliation(s)
- Mehmet Emin Diken
- Science and Technology Application and Research Center, Balikesir University, Balikesir, Turkey
| | - Berna Koçer Kizilduman
- Science and Technology Application and Research Center, Balikesir University, Balikesir, Turkey
| | - Begümhan Yilmaz Kardaş
- Department of Molecular Biology and Genetics, Faculty of Science and Literature, Balikesir University, Balikesir, Turkey
| | - Enes Emre Doğan
- Faculty of Medicine, İstanbul University-Cerrahpaşa, İstanbul, Turkey
| | - Mehmet Doğan
- Department of Chemistry, Faculty of Science and Literature, Balikesir University, Balikesir, Turkey
| | - Yasemin Turhan
- Department of Chemistry, Faculty of Science and Literature, Balikesir University, Balikesir, Turkey
| | - Serap Doğan
- Department of Molecular Biology and Genetics, Faculty of Science and Literature, Balikesir University, Balikesir, Turkey
| |
Collapse
|
9
|
Doğan S, Erdoğan N, İmamoğlu H. What are the requirements for patient-centered breast imaging? Communication preferences of mammography patients in Turkey. Health Care Women Int 2020; 41:524-531. [DOI: 10.1080/07399332.2019.1610406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Serap Doğan
- Department of Radiology, Erciyes University Medical Faculty, Kayseri, Turkey
| | - Nuri Erdoğan
- Department of Radiology, Erciyes University Medical Faculty, Kayseri, Turkey
| | - Hakan İmamoğlu
- Department of Radiology, Erciyes University Medical Faculty, Kayseri, Turkey
| |
Collapse
|
10
|
Karaman İ, Günay AE, Yerer MB, Demirpolat E, Doğan S, Hanım Yay A, Kafadar İH. Effect of kirenol on the interaction between the WNT/β-Catenin and RUNX2/TCF/LEF1 pathways in fracture healing in vivo. Acta Orthop Traumatol Turc 2020; 54:320-329. [PMID: 32544068 DOI: 10.5152/j.aott.2020.03.529] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE This study aimed to determine the effects of a natural diterpenoid, kirenol, on fracture healing in vivo in an experimental rat model of femur fracture and investigate its potential mechanism of action via the Wnt/β-catenin pathway. METHODS In this study, 64 male Wistar albino rats aged 5-7 weeks and weighing 261-348 g were randomly divided into 8 groups from A to L, with eight rats in each group. Standardized fractures were created in the right femurs of the rats and then fixed with an intramedullary Kirschner wire. Four experimental groups were administered 2 mg/kg/day kirenol (Groups C and G) and 4 mg/kg/day (Groups D and H) kirenol by oral gavage.Thereafter, the animals were sacrificed at two time points as follows: on the 10th day (Groups B, C and D) and on the 21st day (Groups F, G and H) after the surgery; fracture healing in each group was assessed radiologically and histopathologically. The Radiographic Union scale of tibia fracture scoring system was used in the radiological examination; callus volume and density were measured using computed tomography. In the histopathologic examination, the scoring system described by Huo et al. was used. Additionally, the mechanism of action was evaluated based on the analyses of protein expression of Wnt3a, LRP5, TCF-LEF1, β-catenin, and Runx-2 proteins using western blot analysis. RESULTS Among the animals sacrificed on the 10th day after the surgery, the highest histopathological and radiological scores were observed in Group D (p<0.05). Furthermore, the callus density (p<0.05) was highest in Group D. Among the animals sacrificed on the 21st day, the highest histopathological and radiological scores were found in Group H, although the differences among the groups were not significant (p>0.05). The callus volume and density were the highest in Groups G and H, respectively, although the differences among groups were not significant. CONCLUSION Kirenol may improve fracture healing in a dose-dependent manner with the early activation of the Wnt/β-catenin pathway and the activation of the Runx-2 pathway.
Collapse
Affiliation(s)
- İbrahim Karaman
- Department of Orthopedics and Traumatology, Erciyes University, School of Medicine, Kayseri, Turkey
| | - Ali Eray Günay
- Clinic of Orthopedics and Traumatology, Kayseri City Hospital, Kayseri, Turkey
| | - Mükerrem Betül Yerer
- Department of Pharmacology, Erciyes University, School of Pharmacy, Kayseri, Turkey
| | - Eren Demirpolat
- Department of Pharmacology, Erciyes University, School of Pharmacy, Kayseri, Turkey
| | - Serap Doğan
- Department of Radiology, Erciyes University, School of Medicine, Kayseri, Turkey
| | - Arzu Hanım Yay
- Department of Histology, Erciyes University, School of Medicine, Kayseri, Turkey
| | - İbrahim Halil Kafadar
- Department of Orthopedics and Traumatology, Erciyes University, School of Medicine, Kayseri, Turkey
| |
Collapse
|
11
|
Soydan Çabuk D, Etöz M, Akgün İE, Doğan S, Öztürk E, Coşgunarslan A. The evaluation of lateral pterygoid signal intensity changes related to temporomandibular joint anterior disc displacement. Oral Radiol 2020; 37:74-79. [PMID: 32052242 DOI: 10.1007/s11282-020-00427-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 01/30/2020] [Indexed: 10/25/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate lateral pterygoid muscle (LPM) signal intensity changes related to different degrees of disc status groups using magnetic resonance imaging (MRI). METHODS Four groups were established according to disc displacement of examined temporomandibular joint (TMJ) and opposing TMJ. MRI scans were obtained with a 1.5 T device. The signal intensity was measured from the sagittal slice where midportion of the muscle belly was observed. The regions of interest were placed over the superior and inferior heads of LPM. To normalize differences in signal intensity, signal intensity of the grey matter and white matter of the brain was also measured. Signal intensity ratio (SIR) was calculated. Measurements were performed in both T1- and T2-weighted images. RESULTS In the intergroup comparisons, a statistically significant difference was found for SIR1 sup., SIR1 inf., SIR2 sup. and SIR2 inf. variables (p < 0.01). According to multiple comparison test (Tukey), no significant difference was found between group 0 and group 1 for SIR1 sup., SIR1 inf., SIR2 sup. and SIR2 inf. variables (p > 0.05). For SIR1 sup., SIR1 inf., SIR2 sup. and SIR2 inf. variables, significant differences were found between five binary comparison groups (1-2, 1-3, 2-3, 0-2, 0-3) (p < 0.05). CONCLUSION In conclusion, SIR is correlated with the degree of disc displacement. The internal derangement of the opposite joint did not affect SIR of superior and inferior heads of examined LPM in both T1- and T2-weighted images. The inferior head of LPM was also found affected by disc displacement.
Collapse
Affiliation(s)
- Damla Soydan Çabuk
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Erciyes University, 38039, Kayseri, Turkey.
| | - Meryem Etöz
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Erciyes University, 38039, Kayseri, Turkey
| | - İbrahim Ethem Akgün
- Department of Radiology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Serap Doğan
- Department of Radiology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Eren Öztürk
- Department of Prosthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
| | - Aykağan Coşgunarslan
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Erciyes University, 38039, Kayseri, Turkey
| |
Collapse
|
12
|
İmamoğlu H, Zararsız G, Doğan S, Koçyiğit İ, Eroğlu E, Öztürk A, Erdoğan N. Autosomal dominant polycystic kidney disease: new role for ultrasound. Eur Radiol 2019; 29:5991-5998. [DOI: 10.1007/s00330-019-06238-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 04/09/2019] [Accepted: 04/12/2019] [Indexed: 10/26/2022]
|
13
|
İmamoğlu H, Doğan S, Erdoğan N. Referring Physicians’ Tendency to Collaborate With Radiologists in Managing Contrast Media–Related Risk Factors. J Am Coll Radiol 2018; 15:296-300. [DOI: 10.1016/j.jacr.2017.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 09/07/2017] [Accepted: 10/02/2017] [Indexed: 11/25/2022]
|
14
|
Affiliation(s)
- Mehmet Emin Diken
- Department of Science and Technology, Application and Research Center, Balıkesir University, Balikesir, Turkey
| | - Serap Doğan
- Department of Molecular Biology and Genetics, Faculty of Science and Literature, Balıkesir University, Balikesir, Turkey
| | - Yasemin Turhan
- Department of Chemistry, Faculty of Science and Literature, Balıkesir University, Balikesir, Turkey
| | - Mehmet Doğan
- Department of Chemistry, Faculty of Science and Literature, Balıkesir University, Balikesir, Turkey
| |
Collapse
|
15
|
Yilmaz B, Doğan S, Çelikler Kasimoğullari S. Hemocompatibility, cytotoxicity, and genotoxicity of poly(methylmethacrylate)/nanohydroxyapatite nanocomposites synthesized by melt blending method. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1331349] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Begümhan Yilmaz
- Department of Molecular Biology and Genetics, Balikesir University Faculty of Science and Literature, Balikesir, Turkey
| | - Serap Doğan
- Department of Molecular Biology and Genetics, Balikesir University Faculty of Science and Literature, Balikesir, Turkey
| | | |
Collapse
|
16
|
Erdogan N, Imamoglu H, Doğan S. Informed Consent of Patients without Reading Skills in Ultrasound-Guided Biopsy: Beware of the Liability. Erciyes Med J 2017. [DOI: 10.5152/etd.2017.17003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
|
17
|
Erdoğan N, İmamoğlu H, Görkem SB, Doğan S, Şenol S, Öztürk A. Preferences of referring physicians regarding the role of radiologists as direct communicators of test results. Diagn Interv Radiol 2017; 23:81-85. [PMID: 27876683 DOI: 10.5152/dir.2016.16325] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
PURPOSE Currently, there is a growing need for patient-centered radiology in which radiologists communicate with patients directly. The aim of this study is to investigate the preferences of referring physicians (RPs) regarding direct communication between radiologists and patients. METHODS This study was conducted in a single academic hospital using a survey form. The survey items investigated the preferences of RPs regarding: 1. who should be the communicator of test results when a patient with abnormal findings requests information (the options were the radiologist; another health professional with communication skills training (CST); and the RP with CST); and 2. how the communication activity should be conducted if the radiologist is obliged (or chooses) to communicate with the patient directly (the options were that the disclosure should be limited to the findings in the radiology report; the radiologist should emphasize that the RP is the primary physician; and the communication activity should be conducted in accordance with guidelines established by consensus). The respondents were 101 RPs from various fields of specialty; they were asked to rate the items using a 5-point Likert scale. The effects of age, sex, field of specialty (surgical vs. nonsurgical), and total years of experience as a medical specialist on the ratings were statistically compared. RESULTS Most RPs preferred that the radiologist transmit the information to the RP without communicating directly with the patient (89.1%). Although 69.3% of the RPs declared that health professionals with CST have priority in communication, 86.1% declared that the RP should be the person who received CST. If the radiologist communicates with patients directly, the RPs favored that 1. the disclosure should be limited to the findings in the radiology report (95%); 2. the communication activity should include an emphasis on the RP as the patient's primary agent (84.1%); and 3. communication should be conducted in accordance with guidelines established by consensus (73.2%). The percentage of strong opinions did not change significantly with regard to age, sex, field of specialty, or total years of experience, except that surgeons expressed strong disagreement with delegating the communication activity to another health professional who received CST (χ² = 9.9; P = 0.042). CONCLUSION These findings may serve as a basis to implement institutional and national policies for patient-centered radiology.
Collapse
Affiliation(s)
- Nuri Erdoğan
- Departments of Radiology, Erciyes University School of Medicine, Kayseri, Turkey.
| | | | | | | | | | | |
Collapse
|
18
|
Ekinci A, Yücel Uçarkuş T, Okur A, Öztürk M, Doğan S. MRI of pneumonia in immunocompromised patients: comparison with CT. Diagn Interv Radiol 2017; 23:22-28. [PMID: 27641778 DOI: 10.5152/dir.2016.16055] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
PURPOSE Pneumonia is an important cause of mortality and morbidity in immunocompromised patients. Computed tomography (CT) is the most sensitive imaging modality for the diagnosis and surveillance of these patients. Since CT exposes the patient to ionizing radiation, we investigated the utility of magnetic resonance imaging (MRI) in the diagnosis and surveillance of immunocompromised patients with pneumonia. METHODS The study included 40 immunocompromised patients with pneumonia documented on CT. The patients were examined by MRI within 48 hours of CT examination. All images were obtained with three different sequences: balanced fast field echo, T1-weighted turbo spin-echo (TSE), and T2-weighted TSE. Lung abnormalities were evaluated using CT and MRI. RESULTS Infection was determined in 36 patients (90%), while the causative organism remained unknown in four patients (10%). In all the patients, the CT findings were consistent with infection, although three patients showed no abnormal findings on MRI. CT was superior to MRI in the detection of the tree-in-bud nodules, centrilobular nodules, and halo sign (P < 0.001, for all). A significant difference was observed between the MRI sequences and CT in terms of the number of detected nodules (P < 0.001). The nodule detection rate of MRI significantly increased in proportion to the size of the nodule (P < 0.001). All MRI sequences had almost perfect agreement with CT for the detection of consolidation (к=0.950, P < 0.001), patchy increased density (к=1, P < 0.001), pleural effusion (к=0.870, P < 0.001), pericardial effusion (к=1, P < 0.001), reverse halo sign, (к=1 P < 0.001), 10-20 mm, nodules (к=0.896, P < 0.001 for CT and B-FFE; к=0.948, P < 0.001 for CT and T1- or T2-weighted imaging) 10-20 mm, >20 mm nodules (к=0.844, P < 0.001). CONCLUSION Although CT is superior to MRI in the diagnosis of pneumonia in immunocompromised patients, MRI is an important imaging modality that can be used, particularly in the follow-up of these patients, thus decreasing to avoid ionizing radiation exposure.
Collapse
Affiliation(s)
- Afra Ekinci
- Department of Radiology, Erciyes University School of Medicine, Kayseri, Turkey.
| | | | | | | | | |
Collapse
|
19
|
Öztürk M, Ekinci A, Elbir ŞF, Okur A, Doğan S, Karahan ÖI. Usefulness of Apparent Diffusion Coefficient of Diffusion-Weighted Imaging for Differential Diagnosis of Primary Solid and Cystic Renal Masses. Pol J Radiol 2017; 82:209-215. [PMID: 28469737 PMCID: PMC5398682 DOI: 10.12659/pjr.899984] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 08/16/2016] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND To evaluate the value of diffusion-weighted imaging (DWI) for distinguishing between benign and malignant renal masses. MATERIAL/METHODS Seventy-five patients with 75 unilateral renal lesions were included, and 75 normal contralateral kidneys served as controls. The lesions were categorized into four groups as malignant cystic, malignant solid, benign cystic and benign solid. The apparent diffusion coefficients (ADCs) were evaluated for two different b values (b=600 s/mm2 and b=1000 s/mm2). Receiving operating characteristic analysis was performed to identify threshold ADCs. RESULTS Sensitivity and specificity were 67% and 77% (p=0.003) at the cutoff value of 1.5 for b=600 s/mm2, and 79% and 62% (p=0.004) at the cutoff value of 1.99 for b=1000 s/mm2 as regards the differentiation between solid benign and malignant renal lesions. Sensitivity and specificity were 78% and 79% (p=0.001) at the cutoff value of 3.1 for b=600 s/mm2, and 86% and 61% (p=0.003) at the cutoff value of 2.9 for b=1000 s/mm2 as regrads the differentiation between benign and malignant cystic renal lesions. CONCLUSIONS DWI can be an effective diagnostic method for distinguishing between benign and malignant renal masses.
Collapse
Affiliation(s)
- Mehmet Öztürk
- Department of Radiology, Diyarbakır Children's Hospital, Diyarbakır, Turkey
| | - Afra Ekinci
- Department of Radiology, Erciyes University Medical Faculty, Kayseri, Turkey
| | - Şenol Fatih Elbir
- Department of Radiology, Private Gözde Academy Hospital, Malatya, Turkey
| | - Aylin Okur
- Department of Radiology, Bozok University Medical Faculty, Yozgat, Turkey
| | - Serap Doğan
- Department of Radiology, Erciyes University Medical Faculty, Kayseri, Turkey
| | | |
Collapse
|
20
|
Yavuz E, Yayla E, Cebeci SE, Kırımlı E, Gümüştakım RŞ, Çakır L, Doğan S. Parental beliefs and practices regarding childhood fever in Turkish primary care. Niger J Clin Pract 2016; 20:93-98. [PMID: 27958254 DOI: 10.4103/1119-3077.181318] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Fever is a very common problem in pediatric age and is one of the most common reasons parents seek medical attention. We aimed to investigate beliefs, habits, and concerns of Turkish parents regarding their children's fever. MATERIALS AND METHODS We performed a cross-sectional survey which was conducted as face-to-face interviews by family physicians from April to June 2014 in family healthcare centers in nine different cities in Turkey. Parents with a child with fever aged between 0 and 14 years were interviewed. The participants were asked questions about sociodemographic data, the definition and measurement of fever, antipyretics, and other interventions used to reduce fever before presenting to the primary care center. RESULTS A total of 205 parents participated in this study. Ninety-four parents (45.8%) measured fever with a thermometer prior to presentation. Only 36 parents (38%) used the thermometer correctly. Thirty-eight parents (18.5%) knew the correct temperature definition of fever for the measured site. A mercury-in-glass thermometer was the choice for most parents (78%) and preferred site for measurement was axillary region (85%). The fever was treated prior to arrival by 171 parents (83.4%). Paracetamol was the most frequently used antipyretic. Fifty-four parents (31.5%) failed to administer the correct antipyretic dose, and 73 parents (42.6%) failed to give the antipyretics at proper intervals. One hundred and fifty-three parents (67%) believed that if not treated fever could cause convulsions. CONCLUSION We conclude that parents share important misconceptions about definition, treatment, and consequences of childhood fever and tend to treat fever before seeking medical care with a substantial rate of wrong doses and wrong intervals.
Collapse
Affiliation(s)
- E Yavuz
- 1st Family Healthcare Center, Rize, Turkey
| | - E Yayla
- 5th Family Healthcare Center, Afyon, Turkey
| | - S E Cebeci
- Serdivan Family Healthcare Center, Sakarya, Turkey
| | - E Kırımlı
- Beykoz 5th Family Healthcare Center, İstanbul, Turkey
| | | | - L Çakır
- Yenimahalle Family Healthcare Center, Ordu, Turkey
| | - S Doğan
- Bayrakli 4th Family Healthcare Center, İzmir, MD, Turkey
| |
Collapse
|
21
|
Öz B, Akcan A, Doğan S, Abdulrezzak Ü, Aslan D, Sözüer E, Emek E, Akyüz M, Elmalı F, Ok E. Prediction of nonsentinel lymph node metastasis in breast cancer patients with one or two positive sentinel lymph nodes. Asian J Surg 2016; 41:12-19. [PMID: 27591153 DOI: 10.1016/j.asjsur.2016.06.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 05/26/2016] [Accepted: 06/24/2016] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE The aim of the present study was to investigate the association between non sentinel lymph node metastasis (NSLNM) and clinicopathological factors, particularly in the case of sentinel lymph node (SLN) metastasis in one or two, in clinically node negative patients with breast cancer. METHODS Between 10/2010 and 10/2014, 350 sentinel lymph node biopsy (SLNB) were performed in patients with histologically proven primary breast cancer in our clinic. The data collection includes the following characteristics: age, pathological tumor size, histological type, histological grade, lymphovascular invasion (LVI), number of positive SLN, size of the SLN metastasis (macrometastasis, micrometastasis, isolated tumor cells), multifocality (MF), extracapsuler invasion (ECI) of the SLN, the estrogen receptor (ER) status, the progesterone receptor (PR) status and the Her 2 receptor status, Ki 67 reseptor status. Data were collected retrospectively and then analyzed. RESULTS A successful SLN biopsy were performed in 345 (98.5%) cases. SLN metastases were detected in 110 (31.8%) cases. These patients then underwent axillary dissection; among these patients, 101 (91.8%) had only one to two positive SLNs. Of the 101 patients with positive SLN biopsies, 32 (31.6%) had metastases in the NSLNs. Univariate and multivariate analysis showed that lymphovascular invasion, extracapsular invasion (ECI), Her-2 receptor positive, and Ki-67 > 14% were related to NSLNM (p<.0.05). CONCLUSION The predicting factors of NSLNM were LVI, ECI, Ki-67 level, Her-2 reseptor positive and but should be further validated in our institutions, different institutions and different patient groups prospectively.
Collapse
Affiliation(s)
- Bahadır Öz
- Department of General Surgery, Faculty of Medicine, Erciyes University, Kayseri, Turkey.
| | - Alper Akcan
- Department of General Surgery, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Serap Doğan
- Department of Radiology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Ümmühan Abdulrezzak
- Department of Nuclear Medicine, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Dicle Aslan
- Department of Radiation Oncology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Erdoğan Sözüer
- Department of General Surgery, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Ertan Emek
- Department of General Surgery, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Muhammet Akyüz
- Department of General Surgery, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Ferhan Elmalı
- Department of Biostatistics, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Engin Ok
- Department of General Surgery, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| |
Collapse
|
22
|
Doğan S, Ekinci A, Demiraslan H, Ulu Kılıç A, Mavili E, Öztürk M, İmamoğlu H, Doğanay M. Ultrasonography and contrast-enhanced CT findings of tularemia in the neck. Diagn Interv Radiol 2016; 22:430-5. [PMID: 27498683 DOI: 10.5152/dir.2016.16037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE We aimed to evaluate the ultrasonography (US) and contrast-enhanced computed tomography (CECT) findings of tularemia in the neck. METHODS US and CECT findings of 58 patients with serologically proven tularemia were retrospectively evaluated. Forty-eight patients underwent US and 42 patients underwent CECT. Lymph node characteristics and parotid preauricular region involvement were analyzed using US and CECT. In addition, involvement of larynx, oropharynx, and retropharynx; presence of periorbital edema; and neck abscess formation were evaluated using CECT. Fine needle aspiration cytology (FNAC) results of enlarged lymph nodes were analyzed in 29 patients. RESULTS Hypoechoic pattern, round shape, absence of hilum, and cystic necrosis were seen in most of the lymph nodes especially at level 2 and 3 on US and CECT. Matting was more commonly observed than irregular nodal border on US and CECT. Parotid preauricular region involvement was seen in 20.8% of patients on US. Oropharyngeal, retropharyngeal, laryngeal and parotid preauricular region involvement and periorbital edema were seen in 52.4%, 19.1%, 4.8%, 31%, and 9.5% of tularemia patients, respectively. Neck abscess was found in 59.5% of patients on CECT. Suppurative inflammation was the most common finding of FNAC. CONCLUSION Tularemia should be considered in the presence of level 2 and 3 lymph nodes with cystic necrosis, matting, absence of calcification, oropharyngeal and retropharyngeal region involvement, and neck abscess, particularly in endemic areas.
Collapse
Affiliation(s)
- Serap Doğan
- Department of Radiology, Erciyes University School of Medicine, Kayseri, Turkey.
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Gökşen N, Çaliş M, Doğan S, Çaliş HT, Özgöçmen S. Magnetic resonance therapy for knee osteoarthritis: a randomized, double blind placebo controlled trial. Eur J Phys Rehabil Med 2016; 52:431-439. [PMID: 26799573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND Therapeutic nuclear magnetic resonance therapy (MRT) works based on the electromagnetic fields. AIM To investigate efficacy of MRT in knee osteoarthritis (OA). DESIGN Prospective, randomized, double-blind, placebo controlled trial. SETTING Outpatient clinic, university hospital. POPULATION Patients who had mild to moderate knee OA at a single knee joint and between 30-75-years-old were randomized by blinded chip cards (1:1). METHODS The treatment group received ten sessions of one hour daily MRT, controls received placebo MRT. All patients underwent clinical examination at baseline, after 2 weeks, and 12 weeks. Imaging included blindly assessed ultrasonography and magnetic resonance (MR) of the knee. RESULTS Ninety-seven patients completed the study. Both groups improved significantly but the average change from baseline in outcome parameters was similar in MRT group (on VAS-pain,-2.6; WOMAC-pain, -2.09; WOMAC-stiffness, -1.81; WOMAC-physical, -1.96) compared to placebo after two weeks (VAS-pain,-1.6; WOMAC-pain, -1.91; WOMAC-stiffness, -1.27; WOMAC-physical, -1.54). Also changes were quite similar at the 12th week after the treatment. SF-36 components at 12th week improved but changes were not significant. Imaging arm also failed to show significant differences between groups in terms of cartilage thickness on US and MR scores. No adverse events were recorded. CONCLUSIONS MRT is safe, but not superior to placebo in terms of improvement in clinical or imaging parameters after a 10-day course of treatment in mild to moderate knee OA. CLINICAL REHABILITATION IMPACT The present study does not promote use of a 10-day course of MRT in mild to moderate knee OA.
Collapse
Affiliation(s)
- Nurgül Gökşen
- Department of Physical Medicine and Rehabilitation, Erciyes University, Faculty of Medicine, Kayseri, Turkey -
| | | | | | | | | |
Collapse
|
24
|
Aykut M, Erman OK, Doğan S. Variability in Population Density of House Dust Mites of Bitlis and Muş, Turkey. J Med Entomol 2016; 53:513-518. [PMID: 26921859 DOI: 10.1093/jme/tjw009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 02/03/2016] [Indexed: 06/05/2023]
Abstract
This study was conducted to investigate the relationship between the number of house dust mites/g dust and different physical and environmental variables. A total of 1,040 house dust samples were collected from houses in Bitlis and Muş Provinces, Turkey, between May 2010 and February 2012. Overall, 751 (72.2%) of dust samples were mite positive. The number of mites/g dust varied between 20 and 1,840 in mite-positive houses. A significant correlation was detected between mean number of mites and altitude of houses, frequency of monthly vacuum cleaning, number of individuals in the household, and relative humidity. No association was found between the number of mites and temperature, type of heating, existence of allergic diseases, age and structure of houses. A maximum number of mites were detected in summer and a minimum number was detected in autumn.
Collapse
Affiliation(s)
- M Aykut
- Science and Technology Application and Research Center, Dicle University, Diyarbakır, Turkey ,
| | - O K Erman
- Department of Biology, Science Faculty, Atatürk University, Erzurum, Turkey , and
| | - S Doğan
- Department of Biology, Arts & Sciences Faculty, Erzincan University, Erzincan, Turkey
| |
Collapse
|
25
|
Abstract
OBJECTIVE The aim of this study was to establish the association between anthropometric parameters and non-alcoholic fatty liver disease (NAFLD) and to determine the most reliable measurement as a parameter in predicting NAFLD. METHODS Two-hundred fifty-three obese children of ages 10 to 18 years were enrolled in this study. Anthropometric data and metabolic parameters such as fasting blood glucose, insulin and lipid levels, were measured. Liver function tests were assessed. NAFLD was determined by ultrasound. RESULTS Most metabolic parameters and anthropometric indices were significantly higher in children with NAFLD. A univariate logistic regression analysis was performed, taking NAFLD status as the dependent variable and anthropometric parameters as the independent variables. NAFLD was affected significantly by the anthropometric values. The multiple logistic regression analysis showed that neck circumference (NC) was the only parameter which determined the risk in both genders. Each 1 cm increase in the NC increased the risk of NAFLD 1.544-fold (p<0.001, 95% confidence interval (CI): 1.357-2.214) in the boys and 1.733-fold (p=0.001, 95% CI: 1.185-2.012) in the girls. Receiver operating characteristic analysis was performed to compare the reliability of anthropometric measurements. NC was observed to be a better indicator. CONCLUSION Measurement of the NC was shown to be associated with NAFLD in children. We suggest the use of NC as a novel, simple, practical, and reliable anthropometric index in predicting children at risk for NAFLD.
Collapse
Affiliation(s)
- Nihal Hatipoğlu
- Erciyes University Faculty of Medicine, Department of Pediatric Endocrinology, Kayseri, Turkey, Phone: +90 352 438 00 76 E-mail:
| | - Serap Doğan
- Erciyes University Faculty of Medicine, Department of Radiology, Kayseri, Turkey
| | - M. Mümtaz Mazıcıoğlu
- Erciyes University Faculty of Medicine, Department of Family Medicine, Kayseri, Turkey
| | - Selim Kurtoğlu
- Erciyes University Faculty of Medicine, Department of Pediatric Endocrinology, Kayseri, Turkey
| |
Collapse
|
26
|
Yıldırım A, Doğan S, Okur A, İmamoğlu H, Karabıyık Ö, Öztürk M. The Role of Dynamic Contrast Enhanced Magnetic Resonance Imaging in Differentiation of Soft Tissue Masses. Electron J Gen Med 2016. [DOI: 10.15197/ejgm.01412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
27
|
Ulutabanca H, Acer N, Küçük A, Doğan S, Tümtürk A, Kurtsoy A, Sağıroğlu A, Bilgen M. Chiari type I malformation with high foramen magnum anomaly. Folia Morphol (Warsz) 2015; 74:402-6. [DOI: 10.5603/fm.2015.0059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Revised: 11/01/2014] [Accepted: 11/03/2014] [Indexed: 11/25/2022]
|
28
|
Bulut A, Zorlu Y, Topkaya R, Aktaş B, Doğan S, Kurt H, Yücesan G. Macrocyclic Cu(ii)-organophosphonate building block with room temperature magnetic ordering. Dalton Trans 2015; 44:12526-9. [DOI: 10.1039/c5dt01596k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A novel macrocyclic Cu(ii)-organophosphonate building block displaying high temperature magnetic ordering, and the structure of [{Cu(2,2′-bpy)}2(HO3P(CH2)8PO3H2)4] (1).
Collapse
Affiliation(s)
- A. Bulut
- Department of Chemistry
- Bogazici University
- Istanbul
- Turkey
| | - Y. Zorlu
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
| | - R. Topkaya
- Department of Physics
- Gebze Technical University
- Kocaeli
- Turkey
| | - B. Aktaş
- Department of Physics
- Gebze Technical University
- Kocaeli
- Turkey
| | - S. Doğan
- Department of Bioengineering
- Yildiz Technical University
- Istanbul
- Turkey
| | - H. Kurt
- Department of Engineering Physics
- Istanbul Medeniyet University
- Kadikoy
- Turkey
| | - G. Yücesan
- Department of Bioengineering
- Yildiz Technical University
- Istanbul
- Turkey
| |
Collapse
|
29
|
Abstract
Gossypiboma is a reaction to a foreign body/object left accidentally inside a patient as a consequence of surgery. This phenomenon may be overlooked due to its rarity or under-reported due to possible repercussions. We report an intra-abdominal gossypiboma that was misdiagnosed on ultrasound, and discuss its radiological findings.
Collapse
Affiliation(s)
- Afra Yildirim
- Department of Radiology, Erciyes University, School of Medicine, Kayseri, Turkey
| | - Hakan Imamoğlu
- Department of Radiology, Erciyes University, School of Medicine, Kayseri, Turkey
| | - Aslı Erzurumdağ
- Department of Radiology, Erciyes University, School of Medicine, Kayseri, Turkey
| | - Serap Doğan
- Department of Radiology, Erciyes University, School of Medicine, Kayseri, Turkey
| |
Collapse
|
30
|
Doğan S, Özyüncü Ö, Atak Z, Turgal M. Perinatal outcome in cases of isolated single umbilical artery and its effects on neonatal cord blood gas indices. J OBSTET GYNAECOL 2014; 34:576-9. [PMID: 24867412 DOI: 10.3109/01443615.2014.919578] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Abstract We aimed to evaluate perinatal outcomes and blood gas indices of isolated single umbilical artery (SUA). In this retrospective study, 134 fetuses with SUA were evaluated. A total of 77 (57.4%) fetuses with isolated SUA (iSUA) were compared with maternal age-matched 95 fetuses with double umbilical arteries (DUA), with respect to pregnancy outcome and umbilical cord blood gas indices. The incidence of SUA in our cohort was 1.04%. Patients with iSUA had lower neonatal birth weight compared with the control group (2,635 ± 972 g vs 2,991 ± 669 g; p = 0.009). Small for gestational age (SGA) frequency was higher in the group of iSUA when compared with fetuses with DUA (17.4% vs 5.4%; p = 0.03). Regarding the umbilical cord blood gas, the parameters were comparable between the two groups. SUA has a favourable obstetric outcome as long as the accompanying malformations are ruled out. Furthermore, neonatal cord blood gas parameters in fetuses with iSUA do not differ from fetuses with DUA.
Collapse
Affiliation(s)
- S Doğan
- Department of Obstetrics and Gynecology, Akdeniz University, Faculty of Medicine , Antalya , Turkey
| | | | | | | |
Collapse
|
31
|
Silov G, Doğan S, Kaya E, Şeker ÖT, Başbuğ EM, Erdoğan Z, Kandemir Z. 18F-FDG PET/CT Findings in Primary Bilateral Adrenal Lymphoma. Electron J Gen Med 2014. [DOI: 10.15197/sabad.1.11.28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
32
|
Oksay T, Naziroğlu M, Doğan S, Güzel A, Gümral N, Koşar PA. Protective effects of melatonin against oxidative injury in rat testis induced by wireless (2.45 GHz) devices. Andrologia 2012; 46:65-72. [PMID: 23145464 DOI: 10.1111/and.12044] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/27/2012] [Indexed: 01/19/2023] Open
Abstract
Wireless devices have become part of everyday life and mostly located near reproductive organs while they are in use. The present study was designed to determine the possible protective effects of melatonin on oxidative stress-dependent testis injury induced by 2.45-GHz electromagnetic radiation (EMR). Thirty-two rats were equally divided into four different groups, namely cage control (A1), sham control (A2), 2.45-GHz EMR (B) and 2.45-GHz EMR+melatonin (C). Group B and C were exposed to 2.45-GHz EMR during 60 min day(-1) for 30 days. Lipid peroxidation levels were higher in Group B than in Group A1 and A2. Melatonin treatment prevented the increase in the lipid peroxidation induced by EMR. Also reduced glutathione (GSH) and glutathione peroxidase (GSH-Px) levels in Group D were higher than that of exposure group. Vitamin A and E concentrations decreased in exposure group, and melatonin prevented the decrease in vitamin E levels. In conclusion, wireless (2.45 GHz) EMR caused oxidative damage in testis by increasing the levels of lipid peroxidation and decreasing in vitamin A and E levels. Melatonin supplementation prevented oxidative damage induced by EMR and also supported the antioxidant redox system in the testis.
Collapse
Affiliation(s)
- T Oksay
- Department of Urology, Suleyman Demirel University, Faculty of Medicine, Isparta, Turkey
| | - M Naziroğlu
- Department of Biophysics, Suleyman Demirel University, Faculty of Medicine, Isparta, Turkey
| | - S Doğan
- Department of Biophysics, Suleyman Demirel University, Faculty of Medicine, Isparta, Turkey
| | - A Güzel
- Department of Urology, Suleyman Demirel University, Faculty of Medicine, Isparta, Turkey
| | - N Gümral
- Department of Physiology, Suleyman Demirel University, Faculty of Medicine, Isparta, Turkey
| | - P A Koşar
- Department Medical Biology and Genetics, Suleyman Demirel University, Faculty of Medicine, Isparta, Turkey
| |
Collapse
|
33
|
Oksay T, Nazıroğlu M, Ergün O, Doğan S, Özatik O, Armağan A, Özorak A, Çelik Ö. N-acetyl cysteine attenuates diazinon exposure-induced oxidative stress in rat testis. Andrologia 2012; 45:171-7. [DOI: 10.1111/j.1439-0272.2012.01329.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/09/2012] [Indexed: 11/30/2022] Open
Affiliation(s)
- T. Oksay
- Department of Urology; Faculty of Medicine; Suleyman Demirel University; Isparta; Turkey
| | - M. Nazıroğlu
- Department of Biophysics; Faculty of Medicine; Suleyman Demirel University; Isparta; Turkey
| | - O. Ergün
- Department of Urology; Faculty of Medicine; Suleyman Demirel University; Isparta; Turkey
| | - S. Doğan
- Department of Biophysics; Faculty of Medicine; Suleyman Demirel University; Isparta; Turkey
| | - O. Özatik
- Department of Obstetrics and Gynecology; Faculty of Medicine; Suleyman Demirel University; Isparta; Turkey
| | - A. Armağan
- Department of Urology; School of Medicine; Bezmialem Vakif University; Istanbul; Turkey
| | - A. Özorak
- Department of Urology; Faculty of Medicine; Suleyman Demirel University; Isparta; Turkey
| | - Ö. Çelik
- Department of Biophysics; Faculty of Medicine; Suleyman Demirel University; Isparta; Turkey
| |
Collapse
|
34
|
Doğan A, Celik A, Doğan S, Ozdoğru I. Acute myocardial infarction due to a large coronary aneurysm in Behçet's disease. Turk Kardiyol Dern Ars 2012; 39:737. [PMID: 22257816 DOI: 10.5543/tkda.2011.01639] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Ali Doğan
- Department of Cardiology, Medicine Faculty of Erciyes University, Kayseri, Turkey
| | | | | | | |
Collapse
|
35
|
Nazıroğlu M, Çelik Ö, Özgül C, Çiğ B, Doğan S, Bal R, Gümral N, Rodríguez AB, Pariente JA. Melatonin modulates wireless (2.45 GHz)-induced oxidative injury through TRPM2 and voltage gated Ca(2+) channels in brain and dorsal root ganglion in rat. Physiol Behav 2011; 105:683-92. [PMID: 22019785 DOI: 10.1016/j.physbeh.2011.10.005] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 10/04/2011] [Accepted: 10/05/2011] [Indexed: 01/12/2023]
Abstract
We aimed to investigate the protective effects of melatonin and 2.45 GHz electromagnetic radiation (EMR) on brain and dorsal root ganglion (DRG) neuron antioxidant redox system, Ca(2+) influx, cell viability and electroencephalography (EEG) records in the rat. Thirty two rats were equally divided into four different groups namely group A1: Cage control, group A2: Sham control, group B: 2.45 GHz EMR, group C: 2.45 GHz EMR+melatonin. Groups B and C were exposed to 2.45 GHz EMR during 60 min/day for 30 days. End of the experiments, EEG records and the brain cortex and DRG samples were taken. Lipid peroxidation (LP), cell viability and cytosolic Ca(2+) values in DRG neurons were higher in group B than in groups A1 and A2 although their concentrations were increased by melatonin, 2-aminoethyldiphenyl borinate (2-APB), diltiazem and verapamil supplementation. Spike numbers of EEG records in group C were lower than in group B. Brain cortex vitamin E concentration was higher in group C than in group B. In conclusion, Melatonin supplementation in DRG neurons and brain seems to have protective effects on the 2.45 GHz-induced increase Ca(2+) influx, EEG records and cell viability of the hormone through TRPM2 and voltage gated Ca(2+) channels.
Collapse
Affiliation(s)
- M Nazıroğlu
- Department of Biophysics, Medicine Faculty, Süleyman Demirel University, Isparta, Turkey.
| | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Abstract
Congenital thoracic arterial anomalies can be incidentally detected in adults from imaging studies performed for other indications. Multidetector computed tomography plays a critical role in the noninvasive assessment of these anomalies and associated cardiac, mediastinal, or parencyhmal changes by providing volumetric data. Radiologists should be familiar with imaging findings of these anomalies to avoid misinterpretation and to establish accurate diagnosis. In this article, we review the imaging characteristics of congenital aortic, pulmonary, and aortopulmonary anomalies with an emphasis on multidetector computed tomography findings. We illustrate the CT findings of congenital arterial anomalies such as double aortic arch, right aortic arch, aortic coarctation, pseudocoarctation, interrupted aortic arch, interruption (absence) of the pulmonary artery, pulmonary artery sling, pulmonary artery stenosis, transposition of great vessels, truncus arteriosus, aortopulmonary window, and patent ductus arteriosus.
Collapse
Affiliation(s)
- Afra Yildirim
- Department of Radiology, Erciyes University School of Medicine, Kayseri, Turkey.
| | | | | | | |
Collapse
|
37
|
Bekar A, Doğan S, Abaş F, Caner B, Korfali G, Kocaeli H, Yilmazlar S, Korfali E. Risk factors and complications of intracranial pressure monitoring with a fiberoptic device. J Clin Neurosci 2008; 16:236-40. [PMID: 19071023 DOI: 10.1016/j.jocn.2008.02.008] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2007] [Accepted: 02/12/2008] [Indexed: 02/03/2023]
Abstract
We prospectively investigated the complications associated with intraparenchymal intracranial pressure (ICP) monitoring using the Camino intracranial pressure device. A fiberoptic ICP monitoring transducer was implanted in 631 patients. About half of the patients (n=303) also received an external ventricular drainage set (EVDS). The durations (mean+/-SD) of ICP monitoring in patients without and with an EVDS were 6.5+/-4.4 and 7.3+/-5.1 days, respectively. Infection occurred in 6 patients with only an ICP transducer (6/328, 1.8%) and 24 patients with an EVDS also (24/303, 7.9%). The duration of monitoring had no effect on infection, whereas the use of an EVDS for more than 9 days increased infection risk by 5.11 times. Other complications included transducer disconnection (2.37%), epidural hematoma (0.47%), contusion (0.47%), defective probe (0.31%), broken transducer (0.31%), dislocation of the fixation screw (0.15%), and intraparenchymal hematoma (0.15%). In conclusion, intraparenchymal ICP monitoring systems can be safely used in patients who either have, or are at risk of developing, increased ICP.
Collapse
Affiliation(s)
- A Bekar
- Department of Neurosurgery, School of Medicine, University of Uludag, Görükle, 16059 Bursa, Turkey.
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Doğan S, Turan P, Doğan M, Alkan M, Arslan O. Inhibition kinetic and mechanism of polyphenol oxidase from various sources by diethyldithiocarbamic acid. Int J Food Sci Technol 2008. [DOI: 10.1111/j.1365-2621.2007.01610.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
39
|
|
40
|
Doğan S, Turan P, Doğan M, Arslan O, Alkan M. Partial characterization of peroxidase from the leaves of thymbra plant (Thymbra spicata L. var. spicata). Eur Food Res Technol 2006. [DOI: 10.1007/s00217-006-0493-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
41
|
Doğan S. The in vitro effects of some pesticides on carbonic anhydrase activity of Oncorhynchus mykiss and Cyprinus carpio carpio fish. J Hazard Mater 2006; 132:171-6. [PMID: 16298474 DOI: 10.1016/j.jhazmat.2005.10.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2005] [Revised: 09/29/2005] [Accepted: 10/04/2005] [Indexed: 05/05/2023]
Abstract
Systemic carbonic anhydrase (CA) inhibitors are among the most powerful agents to lower intraocular pressure. Unfortunately, their use is frequently accompanied by undesired side effects. Some are due to the relatively large amounts of drug that have to be systematically administered to inhibit the CA in the ciliary processes. The aim of the present work was to study in vitro effects of some pesticides on CA enzyme obtained from blood of fish, which play a key role in salt- and osmoregulation and acid-base balance in the fish, Oncorhynchus mykiss and Cyprinus carpio carpio living in freshwaters, and compared with CA inhibitors. CA activities were significantly inhibited by pesticides and inhibitors. I(50) values of O. mykiss CA enzyme inhibited by lambda-cyhalothrin, deltametrin, diozinon, dorzolamide and brinzolamide were 6.05 x 10(-4), 1.48 x 10(-5), 6.84 x 10(-3), 3.82 x 10(-5) and 1.80 x 10(-6) mol/l, and that for C. c. carpio 6.86 x 10(-4), 4.70 x 10(-4), 3.92 x 10(-3), 8.34 x 10(-6) and 1.42 x 10(-6) mol/l, respectively. The pesticides used in this study inhibited the CA activity from different fish species to various degrees. It was found that the most effective inhibitor of CA enzyme within pesticides used was detrametrin. These findings observed in vitro could be useful in the understanding of the toxic effects that pesticides elicit on aquatic organisms in vivo.
Collapse
Affiliation(s)
- Serap Doğan
- Balikesir University, Faculty of Science and Literature, Department of Biology, Balikesir, Turkey.
| |
Collapse
|
42
|
Affiliation(s)
- F. Yun
- Virginia Commonwealth University, Department of Electrical Engineering, Richmond, VA 23284, USA
| | - S. Doğan
- Virginia Commonwealth University, Department of Electrical Engineering, Richmond, VA 23284, USA
- Also at Atatürk University, Faculty of Art & Science, Department of Physics, 25240 Erzurum, Turkey
| | - Y. T. Moon
- Virginia Commonwealth University, Department of Electrical Engineering, Richmond, VA 23284, USA
| | - Y. Fu
- Virginia Commonwealth University, Department of Electrical Engineering, Richmond, VA 23284, USA
| | - J. Xu
- Virginia Commonwealth University, Department of Electrical Engineering, Richmond, VA 23284, USA
| | - D. Johnstone
- Virginia Commonwealth University, Department of Electrical Engineering, Richmond, VA 23284, USA
| | - H. Morkoç
- Virginia Commonwealth University, Department of Electrical Engineering, Richmond, VA 23284, USA
| |
Collapse
|
43
|
Ozçakar L, Erol O, Doğan S, Sener D, Akinc A. Severe osteoporosis after early orchidectomy: is it inevitable? BJU Int 2003; 92:652-3. [PMID: 14511058 DOI: 10.1046/j.1464-410x.2003.04442.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
44
|
|
45
|
Abstract
OBJECTIVE Reports of large series of patients who had undergone successful cranial neurosurgery without hair removal led part of our team to abandon the practice of shaving patients' heads pre-operatively. The aim of this study was to assess whether this change in routine, which was implemented in 1992, has affected the rate of postoperative infection in our cranial surgery patients. METHODS A group of patients whose heads were shaved pre-operatively was compared to a group whose hair was not shaved prior to cranial surgery. The latter patients had their hair washed with shampoo and 4% chlorhexidine within 24 hours of their operation. In the operating room, the surgical site was scrubbed for 8-10 minutes with 4% chlorhexidine diluted with water, and then cleansed with 10% povidone-iodine solution. Prophylactic antibiotics were administered for 3 days. RESULTS We performed 1,038 cranial procedures without hair removal. The procedures included craniotomy for tumour, trauma, aneurysm, other vascular lesions and intracerebral haemorrhage (n = 847), stereotactic biopsy (n = 90), stereotactic craniotomy (n = 34), ventriculoperitoneal shunt placement (n = 27), surgical treatment of infection with aspiration of brain abscess or resection of infected tissue (n = 14), microvascular decompression for trigeminal neuralgia or hemifacial spasm (n = 11), and other miscellaneous procedures (n = 15). We observed 13 postoperative wound infections (1.25%), including 9 deep (0.87%) and 4 superficial infections (0.39%). There was no significant difference between the rate of infection in patients whose heads were shaven (12/980) and the rate in those whose hair was spared (13/1038) (p > 0.05). In addition. there were no other problems related to the surgical preparation technique in the latter group. CONCLUSION Cranial surgery without hair removal is safe and does not increase the risk of surgical wound infection. Patients naturally prefer to keep their full head of hair. We believe that preoperative hair removal is not necessary in preparation for any type of cranial neurosurgery.
Collapse
Affiliation(s)
- A Bekar
- Uludağ University School of Medicine. Department of Neurosurgery, Bursa, Turkey
| | | | | | | | | | | |
Collapse
|
46
|
Tokuç G, Doğan O, Ayan I, Kebudi R, Doğan S, Demiryont M, Camlica H. Prognostic value of proliferating cell nuclear antigen immunostaining in pediatric rhabdomyosarcomas. Acta Paediatr Jpn 1998; 40:573-9. [PMID: 9893293 DOI: 10.1111/j.1442-200x.1998.tb01993.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND The levels of proliferating cell nuclear antigen (PCNA) are almost negligible in long-term quiescent cells and increase dramatically during the cell cycle. Recently, the monoclonal antibodies to PCNA have been used to demonstrate the proliferative component of paraffin-embedded tumor tissues. It has been shown to be available as a simple histological marker of proliferative activity and the PCNA labeling index has been correlated with the prognosis of several malignant neoplasms. METHODS Formalin fixed, paraffin embedded tissue specimens of 29 primary pediatric rhabdomyosarcomas were immunostained by using an anti-PCNA monoclonal antibody (DAKO PCNA PC10). The relationship between the PCNA index and prognosis, clinicopathological features and survival were assessed retrospectively. RESULTS The mean PCNA index for the whole series was 54%. There was no correlation between PCNA index and any of the clinicopathological characteristics. However, patients having tumors with a high (> 54%) PCNA index demonstrated significantly lower survival rates than tumors with a low (< 54%) PCNA index (P = 0.01). Moreover, there were significantly more patients with relapse or progressive disease in the high PCNA index group (P = 0.005). CONCLUSION The PCNA labeling index can be a useful prognostic factor and a good indicator of recurrence and/or survival in patients with rhabdomyosarcoma.
Collapse
Affiliation(s)
- G Tokuç
- Institute of Oncology, Department of Pediatric Oncology, University of Istanbul, Turkey.
| | | | | | | | | | | | | |
Collapse
|
47
|
Abstract
Granulocyte colony-stimulating factor (G-CSF) has been used to reduce the duration and/or degree of neutropenia of different etiologies in recent years. In this study, experience with the use of G-CSF (Neupogen, Roche) after 123 courses of highly myelosuppressive chemotherapy administered to 31 (20 female, 11 male) patients with pediatric solid tumors is reported. G-CSF was initiated at a white blood cell (WBC) count of 918 +/- 452/microL (100-2000), at a dose of 7.6 +/- 2.3 micrograms/kg/d (5-14) subcutaneously for 5.2 +/- 2.4 days (2-18). G-CSF was given for afebrile neutropenia after 82 and for febrile neutropenia after 41 courses. Only in two episodes where G-CSF was given for afebrile neutropenia, fever developed. The average hospitalization period for febrile neutropenia was 9.8 +/- 3.3 days (5-20). Chemotherapy could be given on scheduled time and dosage in 90% of the courses in which G-CSF was used for afebrile neutropenia. G-CSF was well tolerated. Bone pain was observed in two patients and urticaria in one patient. In conclusion, G-CSF increased the WBC count effectively, there were only two febrile episodes in 82 courses in children receiving G-CSF for afebrile neutropenia, it was well tolerated, and it was found to be feasible for use in a developing country.
Collapse
Affiliation(s)
- I Ayan
- Oncology Institute, University of Istanbul, Turkey
| | | | | | | | | |
Collapse
|
48
|
Abstract
A case report is presented of a Class III malocclusion with a Class III skeletal pattern and maxillary retrusion. The patient, an 11-year-old girl, was treated with an orthopaedic face mask in conjunction with standard Edgewise mechanics. Treatment was completed after 14 months, and proved to be stable following the active treatment and at recall 4 years later.
Collapse
Affiliation(s)
- S Doğan
- Ege University, Faculty of Dental Medicine, Bornova, Turkey
| | | |
Collapse
|
49
|
Ertürk N, Doğan S. The effect of neuromuscular diseases on the development of dental and occlusal characteristics. Quintessence Int 1991; 22:317-21. [PMID: 1891607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Fourteen patients suffering from primary muscular disease (myopathies), including seven with Duchenne's muscular dystrophy, were compared to 11 patients whose neuromuscular disorders were of neuropathic origin. Mesioclusion was observed only in the group with Duchenne's muscular dystrophy. Posterior crossbite, anterior open bite, mouth breathing, and large tongue were also more prevalent in the group with myopathies, especially the Duchenne's patients, than they were in the group with neurogenic disorders. The Duchenne's patients exhibited a statistically significant delay in dental emergence, unlike the patients with other myopathies and those with neurogenic disorders. Dentition and occlusion may be more affected in patients with myopathies, especially Duchenne's muscular dystrophy, than they are in patients with neurogenic disorders.
Collapse
Affiliation(s)
- N Ertürk
- Aegean University, Faculty of Dental Medicine, Bornova-Izmir, Turkey
| | | |
Collapse
|
50
|
Doğan S, Ertürk N. [Delaire's architectural and structural cranio-facial analysis in cephalometric evaluation]. Turk J Orthod 1989; 2:103-13. [PMID: 2489130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In this study, the main rules of architectural and Structural cranio-facial analysis developed by Delaire is explained. This architectural and structural cranio-facial analysis of the lateral cephalometric radiograph clarifies the mutual balance of the various bony structures of the cranium and face, individualizes certain of the structures, and specifies their normal of pathologic relationships. Five cephalometric, films were evaluated according to Delaire's architectural and structural analysis and according to classic cephalometric analysis. The results we obtained are presented.
Collapse
|