Araştırma Çıktıları | WoS | Scopus | TR-Dizin | PubMed
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Publication Metadata only Prevalence, etiology, and biopsychosocial risk factors of cervicogenic dizziness in patients with neck pain: A multi-center, cross-sectional study(BAYCINAR MEDICAL PUBL-BAYCINAR TIBBI YAYINCILIK, 2021) Vural, Meltem; Karan, Ayse; Gezer, Ilknur Albayrak; Caliskan, Ahmet; Atar, Sevgi; Aydin, Filiz Yildiz; Benlidayi, Ilke Coskun; Goksen, Aylin; Dogan, Sebnem Koldas; Karacan, Gulcin; Erdem, Rana; Kurt, Emine Eda; Kesiktas, Fatma Nur; Aydin, Tugba; Sahin, Nilay; Aydin, Zafer; Ordahan, Banu; Turkoglu, Gozde; Resorlu, Hatice; Doner, Davut; Yilmaz, Figen; Bertan, Huseyin; Dulgeroglu, Deniz; Karaahmet, Ozgur Zeliha; Tur, Birkan Sonel; Moustafa, Esra; Borman, Pinar; Iskender, Oner; Ay, Saime; Kurtaran, Aydan; Sirzai, Hulya; Evcik, Deniz; Capan, Nalan; Erhan, Belgin; Alptekin, Hasan Kerem; Ural, Halil Ibrahim; University of Health Sciences Turkey; Bakirkoy Dr. Sadi Konuk Research & Training Hospital; Istanbul University; Selcuk University; University of Health Sciences Turkey; Istanbul Okmeydani Training & Research Hospital; Cukurova University; University of Health Sciences Turkey; Antalya Training & Research Hospital; Kirsehir Ahi Evran University; University of Health Sciences Turkey; Balikesir University; University of Health Sciences Turkey; Konya Egitim Training & Research Hospital; Canakkale Onsekiz Mart University; University of Health Sciences Turkey; Istanbul Sisli Hamidiye Etfal Training & Research Hospital; Diskapi Yildirim Beyazit Training & Research Hospital; Ankara University; Hacettepe University; Ufuk University; Guven Hastanesi; Istanbul Medeniyet University; Istanbul Goztepe Training & Research Hospital; Bahcesehir UniversityObjectives: This study aims to investigate the prevalence, etiology, and risk factors of cervicogenic dizziness in patients with neck pain. Patients and methods: Between June 2016 and April 2018, a total of 2,361 patients (526 males, 1,835 females, mean age: 45.0 +/- 13.3 years, range, 18 to 75 years) who presented with the complaint of neck pain lasting for at least one month were included in this prospective, cross-sectional study. Data including concomitant dizziness, severity, and quality of life (QoL) impact of vertigo (via Numeric Dizziness Scale [NDS]), QoL (via Dizziness Handicap Inventory [DHI]), mobility (via Timed Up-and-Go [TUG] test), balance performance [via Berg Balance Scale [BBS]), and emotional status (via Hospital Anxiety Depression Scale [HADS]) were recorded. Results: Dizziness was evident in 40.1% of the patients. Myofascial pain syndrome (MPS) was the most common etiology for neck pain (58.5%) and accompanied with cervicogenic dizziness in 59.7% of the patients. Female versus male sex (odds ratio [OR]: 1.641, 95% CI: 1.241 to 2.171, p=0.001), housewifery versus other occupations (OR: 1.285, 95% CI: 1.006 to 1.642, p=0.045), and lower versus higher education (OR: 1.649-2.564, p<0.001) significantly predicted the increased risk of dizziness in neck pain patients. Patient with dizziness due to MPS had lower dizziness severity scores (p=0.034) and milder impact of dizziness on QoL (p=0.005), lower DHI scores (p=0.004), shorter time to complete the TUG test (p=0.001) and higher BBS scores (p=0.001). Conclusion: Our findings suggest a significant impact of biopsychosocial factors on the likelihood and severity of dizziness and association of dizziness due to MPS with better clinical status.Publication Metadata only A note on the hyperbolic-parabolic identification problem with involution and Dirichlet boundary condition(KARAGANDA STATE UNIV, 2020) Ashyraliyev, Maksat; Ashyralyyeva, Maral A.; Ashyralyev, Allaberen; Bahcesehir University; Turkmen State University; Near East University; Peoples Friendship University of Russia; Institute of Mathematics & Mathematical ModelingIn the present paper, a source identification problem for hyperbolic-parabolic equation with involution and Dirichlet condition is studied. The stability estimates for the solution of the source identification hyperbolic-parabolic problem are established. The first order of accuracy stable difference scheme is constructed for the approximate solution of the problem under consideration. Numerical results are given for a simple test problem.Publication Metadata only Numerical solution of the boundary value problems for the parabolic equation with involution(KARAGANDA STATE UNIV, 2023) Ashyralyev, A.; Ashyralyyev, C.; Ahmed, A. M. S.; Bahcesehir University; Peoples Friendship University of Russia; Institute of Mathematics & Mathematical Modeling; National University of UzbekistanIn this work, we study two boundary value problems for involutary parabolic equation with the first and second kind conditions. We propose absolute stable difference schemes for numerical solutions of these boundary value problems. Actually the stability estimates for solutions of difference schemes are proved. Later error analysis for the numerical solution of both difference schemes are illustrated by test examples.Publication Metadata only On the hyperbolic type differential equation with time involution(KARAGANDA STATE UNIV, 2023) Ashyralyev, A.; Ashyralyyev, A.; Abdalmohammed, B.; Bahcesehir University; Peoples Friendship University of Russia; Institute of Mathematics & Mathematical ModelingIn the present paper, the initial value problem for the hyperbolic type involutory in t second order linear partial differential equation is studied. The initial value problem for the fourth order partial differential equations equivalent to this problem is obtained. The stability estimates for the solution and its first and second order derivatives of this problem are established.Publication Metadata only Comparison of Dorsoulnar Artery Perforator, Superficial Palmar Branch of the Radial Artery, and Superficial Circumflex Iliac Artery Perforator Flaps in Volar Finger Defects(LIPPINCOTT WILLIAMS & WILKINS, 2023) Tatar, Burak Erguen; Ercin, Burak Sercan; Erzurum Bolge Training & Research Hospital; Bahcesehir UniversityBackgroundVolar finger defects can sometimes be challenging for plastic surgeons. There are many reconstruction options from local flaps to free flaps. Therefore, the aim of this study was to present a functional and cosmetic comparison of the results of using dorsoulnar artery perforator (DUAP), superficial palmar branch of the radial artery (SPBRA), and superficial circumflex iliac artery perforator (SCIP) flaps for repairing volar finger defects.MethodsThirty-two patients were included in the study. The age and sex of the patients, cause of injury, defect location, defect size, and presence or absence of nerve damage were noted. The patients' defects were reconstructed with DUAP, SCIP, or SPBRA flaps. The flap size, flap elevation time, vessels, and early postoperative complications were noted. During the postoperative follow-up period, the Michigan Hand Outcomes Questionnaire scale was used to evaluate hand function, and the modified Vancouver Scar Scale was used to assess aesthetic appearance. Two-point discrimination tests and cold intolerance tests were performed to measure sensory outcomes. Donor site improvements were also noted.ResultsThere was no significant difference between the groups in terms of age, defect size, flap size, follow-up time, and 2-point discrimination. It was observed that the elevation time was significantly shorter in the SCIP flap group, and the Michigan Hand Outcomes Questionnaire score was significantly lower in the DUAP flap group compared with the other 2 groups (P < 0.01). In addition, the modified Vancouver Scar Scale score was significantly higher in the DUAP flap group (P < 0.01).ConclusionThe findings of this study show that the use of SPBRA flaps has more advantages than the use of DUAP and SCIP flaps in many respects.Publication Metadata only The effects of resveratrol treatment on caveolin-3 expression and Na+/K+ ATPase activity in rats with isoproterenol-induced myocardial injury(KARE PUBL, 2020) Sehirli, Ahmet Ozer; Aykac, Asli; Tetik, Sermin; Yiginer, Omer; Cetinel, Sule; Ozkan, Naziye; Akkiprik, Mustafa; Kaya, Zehra; Yegen, Berrak Caglayan; Tezcan, Mehmet; Sener, Goeksel; Near East University; Marmara University; Near East University; Near East University; Marmara University; Bahcesehir University; Marmara University; Marmara University; Marmara UniversityOBJECTIVE: The present study aims to investigate the therapeutic effects of resveratrol (RES) on isoproterenol (ISO) induced myocardial injury rat model. METHODS: Catecholamine-induced heart damage was induced by ISO treatment for 30 days. The rats were divided into four groups as follows: the control group received saline, the ISO group received 5.0 mg/kg ISO, the RES group received 10 mg/kg RES, and the ISO-RES group received 10 mg/kg RES and 5 mg/kg ISO treatments for 30 days. Following echocardiographic measurements and body weight recorded, the rats were decapitated. Plasma and cardiac tissue samples obtained by decapitation were analyzed using biochemical, histopathological, molecular and immunohistochemical methods. RESULTS: In the ISO group, Na+/K+ ATPase activity and ATP content, GSH, and caveolin-3 levels were low. LDH, CK and lysosomal enzyme activities, MDA level, and MPO activity were found to be high. It was determined that GSH and MDA levels and MPO, Na+/K+ ATPase activity, ATP content caveolin-3 levels changes that arose from ISO treatment were suppressed by RES treatment. CONCLUSION: RES treatment has ameliorated all the functional and biochemical parameters. The results obtained in this study suggest that RES is a promising supplement against catecholamine exposure as it improves antioxidant defense mechanisms in the heart. In the light of above-mentioned data, RES can be assumed as a promising agent in ameliorating the oxidative injury of the myocardium.Publication Metadata only Effect of Mn/Cu co-doping on the structural, optical and photocatalytic properties of ZnO nanorods(ELSEVIER, 2020) Tosun, M.; Senol, S. D.; Arda, L.; Istanbul Technical University; Abant Izzet Baysal University; Bahcesehir UniversityMn and Cu co-doped ZnO (Zn0.99-xMnxCu0.01O) nanorods were synthesized by the hydrothermal method. The stoichiometry was provided for increasing x values (0.00, 0.02, and 0.04). The structural analysis was provided by the X-ray diffraction method and found single phases for all Mn/Cu co-doped ZnO nanorods. The surface morphology, size, and shapes of the nanorods were found by the Scanning Electron Microscope (SEM) technique. The elemental compositions of the nanorods were studied by electron dispersive spectroscopy (EDS). Hexagonal Wurtzite structure was proved by c/a ratios of the ZnMnCuO nanorods. The Fourier transform infrared (FTIR) studies were performed and detailed. We successfully produced the ZnO nanorods by multiple doping with Mn and Cu using the hydrothermal. By means of optical measurements, energy band gaps of the samples were calculated and the effects of dopants elements on optical properties were discussed. The refractive index was calculated by using different models. It was found that the refractive index strongly depends on the Mn/Cu co-doped concentration. The photocatalytic activity of Zn0.99-xMnxCu0.01O nanorods was investigated using Methylene Blue (MeB) as model organic dye under ambient visible light. (C) 2020 Elsevier B.V. All rights reserved.Publication Metadata only New Histopathologic Evidence for the Parasympathetic Innervation of the Kidney and the Mechanism of Hypertension Following Subarachnoid Hemorrhage(LIPPINCOTT WILLIAMS & WILKINS, 2020) Kepoglu, Umit; Kanat, Ayhan; Aydin, Mehmet Dumlu; Akca, Nezih; Kazdal, Hizir; Zeynal, Mete; Kantarci, Mecit; Sipal, Sare Altas; Bahcesehir University; Recep Tayyip Erdogan University; Ataturk University; Recep Tayyip Erdogan University; Recep Tayyip Erdogan University; Ataturk University; Ataturk UniversityBackground: The Cushing response was first described in 1901. One of its components is elevated systemic blood pressure secondary to raised intracranial pressure. However, controversy still exists in its pathophysiologic mechanism. Hypertension is attributed to sympathetic overactivity and vagotomy increased renal-based hypertension. However, the role of the parasympathetic system in hypertension has not been investigated. This subject was investigated following subarachnoid hemorrhage (SAH). Methods: A total of 24 rabbits were used: control group (n = 5), SHAM group (n = 5), and an SAH group (n = 14, bolus injection of blood into the cisterna magna). Blood pressures were examined before, during, and after the experiment. After 3 weeks, animals were decapitated under general anesthesia. Vagal nodose ganglion, axonal degeneration, and renal artery vasospasm (RAV) indexes of all animals were determined histopathologically. Results: Significant degenerative changes were detected in the vagal axons and nodose ganglia following SAH in animals with severe hypertension. The mean degenerated neuron density of nodose ganglions, vasospasm index (VSI) values of renal arteries of control, SHAM, and study groups were estimated as 9.0 +/- 2.0 mm(3), 1.87 +/- 0.19, 65.0 +/- 12.0 mm(3), 1.91 +/- 0.34, and 986.0 +/- 112.0 mm(3), 2.32 +/- 0.89, consecutively. Blood pressure was measured as 94.0 +/- 10.0 mmHg in control group, 102.0 +/- 12.0 mmHg in SHAM, 112.0 +/- 14.0 mmHg in middle (n = 9), and >122.0 +/- 10.0 mmHg in severe RAV-developed animals (n = 5). Differences VSI values and blood pressure between groups were statistically significant (P < 0.05). Conclusion: The degeneration of vagal nodose ganglion has an important role in RAV and the development of RAV and hypertension following SAH.Publication Metadata only The potential role of hydrogen as a sustainable transportation fuel to combat global warming(PERGAMON-ELSEVIER SCIENCE LTD, 2020) Acar, Canan; Dincer, Ibrahim; Bahcesehir University; Ontario Tech University; Yildiz Technical UniversityHydrogen is recognized as a key source of the sustainable energy solutions. The transportation sector is known as one of the largest fuel consumers of the global energy market. Hydrogen can become a promising fuel for sustainable transportation by providing clean, reliable, safe, convenient, customer friendly, and affordable energy. In this study, the possibility of hydrogen as the major fuel for transportation systems is investigated comprehensively based on the recent data published in the literature. Due to its several characteristic advantages, such as energy density, abundance, ease of transportation, a wide variety of production methods from clean and renewable fuels with zero or minimal emissions, hydrogen appears to be a great chemical fuel which can potentially replace fossil fuel use in internal combustion engines. In order to take advantage of hydrogen as an internal combustion engine fuel, existing engines should be redesigned to avoid abnormal combustion. Hydrogen use in internal combustion engines could enhance system efficiencies, offer higher power outputs per vehicle, and emit lower amounts of greenhouse gases. Even though hydrogen-powered fuel cells have lower emissions than internal combustion engines, they require additional space and weight and they are generally more expensive. Therefore, the scope of this study is hydrogen-fueled internal combustion engines. It is also highlighted that in order to become a truly sustainable and clean fuel, hydrogen should be produced from renewable energy and material resources with zero or minimal emissions at high efficiencies. In addition, in this study, conventional, hybrid, electric, biofuel, fuel cell, and hydrogen fueled ICE vehicles are comparatively assessed based on their CO2 and SO2 emissions, social cost of carbon, energy and exergy efficiencies, fuel consumption, fuel price, and driving range. The results show that when all of these criteria are taken into account, fuel cell vehicles have the highest average performance ranking (4.97/10), followed by hydrogen fueled ICEs (4.81/10) and biofuel vehicles (4.71/10). On the other hand, conventional vehicles have the lowest average performance ranking (1.21/10), followed by electric vehicles (4.24/10) and hybrid vehicles (4.53/10). (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.Publication Metadata only Surgical Protocol for a Safe Lateral Nasal Wall Osteotomy(LIPPINCOTT WILLIAMS & WILKINS, 2020) Suzen, Muazzez; Temiz, Mustafa; Demirel, Oguzhan; Uckan, Sina; Istanbul Medipol University; Bahcesehir UniversityPurpose: The purpose of this study was to define the anatomy and anatomic variations of the lateral nasal wall area to identify safe access points, determine the optimum osteotomy line for Le Fort I osteotomies, and define a surgical protocol. Materials and Methods: The angulations and widths of 160 lateral nasal walls and the distances of the greater palatine canal were measured on axial images from coronal sections 5 mm over the deepest point of the nasal base. Results: The average angle between the anterior lateral nasal wall and the medial maxillary sinus wall was 160 degrees in females and 165.67 degrees in males for the right and 155.90 degrees in females and 163.22 degrees in males for the left side. Statistically significant differences were found in the lengths, angulations, and widths of the lateral nasal walls between females and males. Conclusion: This study described the mean angulations and linear distances between anatomic structures of the lateral nasal wall and it defines the Medipol protocol for a safe osteotomy.