AHLATIN GÜCÜ: Ahlat ( Pyrus elaeagrifolia) Meyve Ekstresinin Antigenotoksik Etkilerinin Drosophila melanogaster Üzerinde Kanat SMART Analizi ile Araştırılması

Bu projede, orijini Anadolu olan, hava kirliliğine, kötü hava koşullarına ve kuraklığa son derece dirençli olan ahlat (P. elaeagrifolia) meyve ekstresinin antigenotoksik etkilerinin D. melanogaster meyve sineği üzerin-de kanat SMART analizi ile araştırılması amaçlanmıştır

What is the optimal length of stay in hospital for ST elevation myocardial infarction treated with primary percutaneous coronary intervention?

Backgound: The aim of this study was to evaluate the safety and practicality of very early (within 48 h) discharge with long-term follow-up results, and to define an optimal length of stay in hospital for patients with ST elevation myocardial infarction (STEMI) according to their demographic characteristics and risk assessment. Methods: A total of 267 patients with STEMI successfully treated with primary coronary intervention were retrospectively analyzed. Patients was divided into four groups according to length of hospitalization: 24 hours, 48 hours, 72 hours, and more than 72 hours. The groups were compared in terms of the patients’ demographic and clinical characteristics, short- and long-term follow-up results, mortality, revascularization and major adverse cardiac events (MACE). Results: More than two thirds of the patients were discharged within 48 hours (68.9%). No difference was observed between groups in terms of one month and one year MACE and one year restenosis. However, one month restenosis was slightly higher in the fourth group. At the end of the first year, there had been only four deaths, and these were in the third and fourth groups. There were no deaths among patients discharged within 48 hours. Killip class, left ventricular ejection fraction, multi-vessel disease and diabetes were the major determinants of length of stay in hospital. Conclusions: Very early discharge is safe and feasible and does not increase the mortality rate. Uncomplicated STEMI patients with single vessel disease could be discharged after 24 hours. Patients with multi-vessel disease classified in the low risk group could be discharged after 48 hours. (Cardiol J 2011; 18, 4: 378–384

An Investigation into Management Styles and Creative Leadership Characteristics of School Administrators

ABSTRACT The main objective of this research is to examine the management styles and creative leadership characteristics of school administrators. The study used a descriptive and quantitative survey model. It was conducted on 50 academics and associates based on voluntary participation. The research used two different questionnaires. The scale “Creative Leadership Qualities of School Administrators” was used to measure the perceptions of teachers regarding innovative leadership qualities. It was formulated as a five-point Likert scale by Uçar and Sağlam (2019). The other scale used in the study was the “Scale of Management Styles Exhibited by School Principals” developed by Asar (2019) as a five-point Likert scale to collect the data. The study found no significant difference in the management styles and creative leadership characteristics of administrators based on variables such as sex, age, professional seniority and educational level of teachers

Joint routing, gateway selection, scheduling and power management optimization in wireless mesh networks

Ankara : The Department of Industrial Engineering and the Graduate School of Engineering and Science of Bilkent University, 2011.Thesis (Master's) -- Bilkent University, 2011.Includes bibliographical references leaves 57-58.The third generation (3G) wireless communications technology delivers user traffic in a single step to the wired network via base station; therefore it requires all base stations to be connected to the wired network. On the other hand, in the fourth generation (4G) communication systems, it is planned to have the base stations set up so that they can deliver each other’s traffic to a small number of base stations equipped with wired connections. In order to improve system resiliency against failures, a mesh structure is preferred. The most important issue in Wireless Mesh Networks (WMN) is that the signals that are simultaneously transmitted on the same frequency channel can interfere with each other to become incomprehensible at the receiver end. It is possible to operate the links at different times or at different frequencies, but this also lowers capacity usage. In this thesis, we tackle the planning problems of WMN, using 802.16 (Wi-MAX) protocol, such as deploying a given number of gateway nodes along with operational problems such as routing, management of power used by nodes and scheduling while maximizing the minimum service level provided. The WMN under consideration has identical routers with fixed locations and the demand of each router is known. In order to be able to apply our results to real systems, we work with optimization models based on realistic assumptions such as physical interference and single path routing. We propose heuristic methods to obtain optimal or near optimal solutions in reasonable time. The models are applied to some cities in Istanbul and Ankara provinces.Uzunlar, OnurM.S

The effect of folate on ischemia/reperfusion injury in a rat adnexal torsion model

Purpose The ischemia/reperfusion (I/R) injury of ovaries in adnexal torsion may have inadvertent consequences. Many agents have been studied in terms of their ability to prevent reperfusion damage to ovaries in suspected cases. In this study, folic acid, known to have antioxidative properties, was investigated to determine whether it played a role in the prevention of I/R damage in a rat ovarian torsion model.Methods In this experimental study, 40 female adult Wistar-Albino rats were randomly divided into fve groups as control, ischemia, I/R, Fol2 (2 mg/kg folic acid), and Fol4 (4 mg/kg folic acid). In the Fol2 and Fol4 groups, folic acid was intra peritonelly administered 30 min before reperfusion. Blood samples were obtained from the tails of each rat at the second hour of reperfusion.Results The total oxidant status (TOS), total antioxidant status, cystatin C and folic acid levels of the fve groups were investigated. Folic acid in 2 mg/kg dose could moderately increase the serum folic acid concentration (15.75–19.95 ng/ml, p0.05), although there was no statistical diference in TOS levels (p=0.07). Folic acid in 4 mg/kg dose, could signifcantly increase the serum folic acid concentration (15.75–37.65 ng/ml). However, it did not signifcantly reduce the level of cystatin C (0.18–0.19 µg/L, p>0.05), and did not improve oxidative stress injury (76.05–130.58, p>0.05).Conclusion Folic acid in 2 mg/kg dose might improve the ovarian I/R injury though this was not statistically signifcant. Further studies are required to reach a defnitive conclusion about the protective efect of folic acid in I/R injury

Case Report: Life-threatening angiomyxoma of the larynx

Background: Angiomyxoma is a benign proliferative mesenchymal tumor and a very rare mass in the larynx. There is not enough information about the etiology, clinical finding, treatment and prognosis of laryngeal angiomyxoma.Case Details: A 52 years old man presented with respiratory distress. Also, he had suffered from dysphagia, dysphonia, cough, and obstructive sleep apnea in the supine position for 6 months. He was operated on via transoral approach under general anesthesia with orotracheal intubation. The mass was encapsulated and completely removed. The histopathologic diagnosis was reported as angiomyxoma.Conclusion: Angiomyxoma should be considered in the differential diagnosis of the larynx masses. The treatment of angiomyxomas of the larynx is surgical. The mass can be usually excised intraorally or endoscopically.Keywords: Angiomyxoma, larynx, dysphonia, respiratory distres

Is there an association between liver type fatty acid binding protein and severity of preeclampsia?

Objective The aim of this study was to estimate the level of liver fatty acid binding protein (LFABP) in women with preeclampsia. Method A case–control study was conducted in 90 pregnant women who were divided into the following three groups: normal pregnancy (n = 30), mild–moderate preeclampsia (n = 30), and severe preeclampsia (n = 30). Maternal blood samples were obtained during an antenatal clinic visit in normal pregnant women, and at the time of diagnosis in women with preeclampsia. Serum LFABP levels were measured by the quantitative sandwich enzyme immunoassay technique. Results Serum LFABP level was significantly higher in severe and mild–moderate preeclampsia groups than normal pregnancy group (1,709.90 ± 94.82, 1,614.93 ± 118.22, and 1,532.36 ± 140.98 pg/ml, respectively; p\0.001). In multivariate analysis, the severity of preeclampsia was correlated with LFABP level [unadjusted odds ratio (95 % confidence interval), 1.008 (1.003–1.012), p\0.001 and LDH 1.063 (1.029–1.099), p\0.001]. Conclusion Maternal serum LFABP level appears to be correlated with the severity of the preeclampsia and can be used to confirm the diagnosis

Severe 25-OH vitamin D deficiency as a reason for adverse pregnancy outcomes

Objective: There is a growing concern about the unfavorable effects of vitamin D deficiency in general population, including pregnant women, worldwide. The aim of this study is to evaluate the effect of severe maternal serum 25-OH vitamin D levels on adverse pregnancy outcomes in first trimester. Material and methods: Serum samples of 86 pregnant women in first trimester were collected prospectively from May 2017 to June 2017. Serum 25-OH vitamin D levels were analyzed by enzyme immunoassay method. Patients were classified according to maternal serum 25-OH vitamin D levels as group 1 (n¼34) 10ng/ml. The two groups were compared in terms of adverse pregnancy outcomes. Results: The mean 25-OH vitamin D levels of the total 86 pregnant women were 13.83 (6–48) ng/ml. 40% of the pregnant women had low level of 25-OH vitamin D levels (<10ng/ml). The adverse pregnancy outcomes were significantly increased in group 1 (p<.018). Conclusions: Maternal serum 25-OH vitamin D levels <10ng/ml is a risk factor for adverse pregnancy outcomes. 25-OH vitamin D levels should be screened in high-risk pregnant women and treated in case of deficiency

Immature event-related alpha dynamics in children compared with the young adults during inhibition shown by day-night stroop task

Introduction: Inhibitory control develops gradually from infancy to childhood and improves further during adolescence as the brain matures. Related previous studies showed the indispensable role of task-related alpha power during inhibition both in children and young adults. Nonetheless, none of the studies have been able to investigate the direct differences in brain responses between children and young adults when confronted with a stimulus that should be inhibited. Because, unlike event-related designs, task-related designs involve continuous tasks over a certain period, which precludes the possibility of making such a comparison. Accordingly, by employing event-related design, the present study first time in the literature, aimed to analyze the event-related alpha phase locking and event-related alpha synchronization/ desynchronization to differentiate the inhibitory processes in children compared to young adults. Methods: Twenty children between the ages of 6 to 7 years and 20 healthy young adult subjects between the ages of 18 to 30 years were included in the study. Day-night Stroop task was applied to all subjects during 18-channel EEG recordings. Event-related time-frequency analysis was performed with the complex Morlet Wavelet Transform for the alpha frequency band (8–13 Hz). Event related spectral perturbation (ERSP) in three different time windows (0–200 ms, 200–400 ms, 400–600 ms) and Event-related phase locking in the early time window (0–400 ms) was calculated. Results: The children had increased alpha power in early and late time windows but decreased alpha phase locking in the early time windows compared to young adults. There were also topological differences between groups; while young adults had increased alpha phase-locking in frontal and parietal electrode sites, children had increased occipital alpha power and phase locking. Discussion: The shift in event-related alpha power observed from posterior to anterior regions with age may suggest a progressive maturation of the frontal areas involved in inhibitory processes from childhood to adulthood. The results of the present study showed that children and young adults had different EEG oscillatory dynamics during inhibitory processes at alpha frequency range

Relationship among expression of basic-fibroblast growth factor, MTDH/Astrocyte elevated gene-1, adenomatous polyposis coli, matrix metalloproteinase 9,and COX-2 markers with prognostic factors in prostate carcinomas

Background: The etiopathogenesis of prostate cancer (PC) is still not clear, but hormonal, genetic, and environmental factors are thought to play a role in the tumor pathogenesis. Astrocyte elevated gene-1(AEG-1) as a novel transmembrane protein is predominantly located in the perinuclear region and endoplasmic reticulum. It has been found that AEG-1 upregulation increases the invasive ability of glioma and prostate cancer. Basic fibroblast growth factor (bFGF), matrix metalloproteinase-9 (MMP-9), cyclooxygenases-2 (COX-2), and adenomatous polyposis coli (APC) are very important in tumor progression as well. Materials and Methods: This study included 97 radical prostatectomy specimens. IHC stains for bFGF, MMP-9, COX-2, APC, and AEG-1 were performed on the tissue microarray using standard procedures. For each patient, the age, Gleason score, tumor volume, lymphovascular invasion, lymph node metastasis, surgical margin, and the invasion of vesiculoseminalis areas were assessed. Analyses were performed using the statistical PASW (ver. 18). Results: Statistically significant positive relationships were found MMP-9 and COX-2 (r = 0.242 and P = 0.017), between MMP-9 and APC (r = 0.207 and P = 0.043), and between bFGF and AEG-1 (r = 0.295 and P = 0.004). However, the relationships between age and staining results and tumor volume and staining results were not found to be significant. Although a positive correlation was found between the Gleason score and tumor volume and the Gleason score and age (r = 0.415 and P = 0.0001; r = 0.246 and P = 0.015, respectively), we did not find a statistically significant relationship between other stains and other prognostic parameters (lymphovascular invasion, lymph node metastasis, surgical margin, or vesiculoseminalis invasion). Conclusion:The relationships we found between MMP-9 and COX-2, between MMP-9, and APC and between bFGF and AEG-1 as independent prognostic parameters could be helpful in the development of new therapeutic procedures.Keywords: Adenomatous polyposis coli, astrocyte elevated gene‑1, basic fibroblast growth factor, cyclooxygenases‑2, matrix metalloproteinase‑9, prognostic parameters, prostate adenocarcinomasNigerian Journal of Clinical Practice • Oct-Dec 2013 • Vol 16 • Issue