Browsing by Author "Turan, A."

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Antenatal Diagnosis of Placenta Increta and Its Successful Conservative Management With Methotrexate
(2013) Güler, A.; Kosus, N.; Turan, A.; Mil, Z.
Growing number of cesarean deliveries lead to the increased frequency of abnormally invasive placentation. Success in the management of placenta accreta relies on accurate early diagnosis with appropriate perioperative multidisciplinary planning to anticipate and avoid massive obstetric haemorrhage at delivery. In this report, a case of placenta previa increta that was diagnosed antenatally with ultrasound and magnetic resonance imaging and managed conservatively with methotrexate was presented with the discussion of literature.
Comprehensive Investigation of Basic Red 46 Removal by Pinecone Adsorbent: Experimental, Isotherm, Kinetic and Thermodynamic Studies
(Springer, 2023) Aldemir, A.; Turan, A.; Kul, A. R.; Koyuncu, H.
In this study, pinecone sawdust (PCS) performance was investigated for Basic Red 46 (BR 46) dye adsorption from aqueous solutions. The physicochemical and morphological characterization of PCS before and after BR 46 adsorption were evaluated with the help of Fourier transform infrared spectra, X-ray diffraction and scanning electron microscopy/energy-dispersive X-ray spectroscopy analysis. Effects of initial dye concentration, temperature and contact time were determined for BR 46 adsorption. Seventeen equilibrium isotherm models and eight kinetic models were compared at 298 K, 308 K and 318 K temperatures for five different concentrations which varied from 20 to 60 mg/L. The obtained adsorption data best-fit the Freundlich model among all the applied isotherm models, and the maximum adsorption capacity (q(m)) was calculated as 129.87 mg/g at 298 K. The pseudo-second-order model was the best choice to describe the adsorption behavior among all the applied kinetic models. The removal percentage of BR 46 dye with PCS was 74.52% at 318 K for 60 mg/L concentration. The negative free energy (Delta G degrees), enthalpy (Delta H degrees) and entropy (Delta S degrees) values of adsorption were calculated as - 2837 kJ/mol, 18,898 kJ/mol and 68.51 J/mol K, respectively. This adsorption process was spontaneous and favorable, coinciding with the negative free energy. The activation energy (E-A) value of this process was determined with the Arrhenius equation as 19.92 kJ/mol. The reliability of all results was analyzed statistically and evaluated with correlation coefficient (R-2), sum of squares, sum of the square of error and mean square of error values. As a result of this study, PCS can be used effectively for BR 46 dye removal. [GRAPHICS] .
Effects of Gundelia Tournefortii L. on Biochemical Parameters, Antioxidant Activities and Dna Damage in a Rat Model of Experimental Obesity
(Instituto Internacional de Ecologia, 2023) Bati, B.; Celik, I.; Vuran, N.E.; Turan, A.; Alkan, E.E.; Zirek, A.K.
The present study was designed to investigate the effects of Gundelia tournefortii L. plant extract on different tissues in terms of DNA damage, biochemical and antioxidant parameter values in rats with high-calorie diets. With this aim, Wistar albino male rats were divided into 4 groups containing 6 rats each and the study was completed over 12 weeks duration. At the end of the implementation process over the 12 weeks, rats were sacrificed and blood and tissue samples were obtained. Analyses were performed on blood and tissue samples. According to results for DNA damage (8-OHdG), in brain tissue the OG2 group was significantly reduced compared to the NC group. For MDA results in liver tissue, OG1 and OG2 groups were determined to increase by a significant degree compared to the control group, while the OG2 group was also increased significantly compared to the obese group. In terms of the other parameters, comparison between the groups linked to consumption of a high calorie diet (HCD) and administration of Gundelia tournefortii L. in terms of antioxidant activities and serum samples obtained statistically significant results. Gundelia tournefortii L. plant extracts had effects that may be counted as positive on antioxidant parameter activity and were especially identified to improve DNA damage and MDA levels in brain tissues. Additionally, consumption of Gundelia tournefortii L. plant extract in the diet may have antiobesity effects; thus, it should be evaluated for use as an effective weight-loss method and as a new therapeutic agent targeting obesity. © 2023, Instituto Internacional de Ecologia. All rights reserved.
Inter-Observer Variability of Radiologists and Gynecologists in Hysterosalpingogram Evaluation
(OrtadogÂ u Reklam Tanitim Yayincilik Turizm Egitim Insaat Sanayi ve Ticaret A.S., 2016) Güler Okyay, A.; Öner, G.; Çölçimen, N.; Turan, A.; Beyazal Çeliker, F.
Objective: Reading of hysterosalpingography (HSG) films is important for management of patients. The aim of this study was to evaluate and compare HSG interpretation of radiologists and clinicians. Material and Methods: Two clinicians and 2 radiologists, who were 35-43 years old and were fulfilled 5 years in their speciality, evaluated 116 hysterosalpingograms. HSG pictures were viewed at computer monitor and the observers were asked to evaluate them within a standard framework consisted of several questions for diagnosis of uterine and tubal disease. The consistency of each individual reader, the reliability of detecting specific abnormalities, and the consistency of clinicians compared with radiologists was measured. Results: There were statistically significant differences in the consistency of interpretations for contour of uterine cavity, uterine deviation, and uterine filling defect (p<0.05). Evaluation of uterine anomalies with HSG were similar between clinicians and radiologists (p>0.05). Although ratios of hydrosalphinx were similar between clinicians and radiologists (p>0.05), there were differences for the evaluation of bilateral tubal contrast falling (p<0.05). Conclusion: Gynecologists have more inter-observer variability than radiologists in hysterosalpingography evaluation. However, both clinicians and radiologists were compatible within themselves. Compatibility of radiologists was higher than that of clinicians. Better designed studies are needed in order to confirm the variability of HSG reports and to answer the question of "who should read HSGs of infertile women?. © Copyright 2016 by Türkiye Klinikleri.
Large Chondrosarcoma of Skull Base: an Unusual Intracranial Tumor in a Young Male
(2007) Avcu, S.; Turan, A.; Ünal, Ö.; Bora, A.
A 25-year-old male presented with headache. He was noted to be neurologically intact on physical examination. He had normal laboratory findings. CT and MR imaging showed a large right temporal mass. Radiological diagnosis was cartilaginous tumor arising from the skull base. The patient underwent surgery at another hospital. The histopathologic features were supporting the radiologic diagnosis being evaluated as mixoid type chondrosarcoma. Although intracranial cartillaginous tumors are rare, the diagnosis can be possible with careful radiological analysis.
A Rare Case That Can Be Diagnosed With Prenatal Ultrasound: Fryns Syndrome
(Yuzuncu Yil Universitesi Tip Fakultesi, 2015) Çeliker, F.B.; Ceylan, N.; Turan, A.; Beyazal, M.
Fryns syndrome is a syndrome that is accompanied by multiple congenital anomalies, with extremely high mortality, showing autosomal recessive inheritance and often leaves severe mental retardation on those who survive. Abnormal facial appearance, distant faded nipples, small rib cage, distal extremity and nail hypoplasia, pulmonary hypoplasia and diaphragmatic hernia are among major criteria for the diagnosis. Later, cardiovascular, genitourinary, central nervous system and skeletal system anomalies have been identified. Here, we presented Fryns syndrome case which has been diagnosed by prenatal ultrasound, and of which the diagnosis has been confirmed by physical examination and ultrasound at the postnatal period. © 2015, Yuzuncu Yil Universitesi Tip Fakultesi. All rights reserved.
Retropharyngeal Abscess Presenting With Acute Respiratory Distress in a Case of Cervical Spondylodiscitis
(Royal Belgian Soc Ear, Nose, Throat, Head & Neck Surgery, 2010) Avcu, S.; Uenal, Oe.; Turan, A.; Kiris, M.; Yuca, K.
Retropharyngeal abscess presenting with acute respiratory distress in a case of cervical spondylodiscitis. We treated a 41-year-old man who presented with dysphagia, fever and respiratory distress. Magnetic resonance imaging (MRI) showed a large retropharyngeal abscess (RPA) extending to the C5-6 level, C5-6 spondylodiscitis and a spinal epidural abscess. The RPA was drained surgically under emergency conditions. Because the tuberculin skin test was positive, the patient underwent a triple anti-tuberculous drugs regimen. After six months of drug therapy, the epidural abscess was completely resolved. One of the most important aetiologies of RPA is thought to be tuberculous spondylodiscitis, and cervical vertebrae should be scanned thoroughly with pre-operative MRI.
Squamous Cell Carcinoma Arising From Teratoma of the Ovary: Magnetic Resonance, Computed Tomography, and Pathological Findings
(I R O G Canada, inc, 2017) Celiker, F. Beyazal; Turan, A.; Beyazal, M.; Eroglu, H. Temel; Bulut, G.; Colcimen, N.; Polat, H. Beyazal
In the present case report, the authors investigated the clinicopathological characteristics of squamous cell carcinoma (SCC) arising from teratoma of the ovary and intended to report their clinical experience. Malignant transformation of ovarian teratoma is a quite rare condition with SCC observed to be the most common form of transformation. The present case was a 43-year-old female patient and her clinical presentation was abdominal pain, abdominal distension, and abdominal mass sensation. The patient underwent ultrasonography. After detection of a mass, magnetic resonance imaging (MRI) was performed. Surgery was performed on the patient and the pathological report revealed SCC arising from teratoma. The patient was evaluated retrospectively in terms of demographic characteristics, MRI, surgical findings, and prognosis.