90 results on '"Köksal E"'
Search Results
2. Have dietary restriction in accordance with mediterrenean diet effects on telomere length in obese and overweight subjects?
- Author
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ARSLAN, N., primary and KÖKSAL, E., additional
- Published
- 2023
- Full Text
- View/download PDF
3. Crop height estimation of sorghum from high resolution multispectral images using the structure from motion (SfM) algorithm
- Author
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Tunca, E., primary, Köksal, E. S., additional, Taner, S. Çetin, additional, and Akay, H., additional
- Published
- 2023
- Full Text
- View/download PDF
4. The Minimal-Access Kidney Transplantation Technique in Living-Donor Transplantation: Results From a Retrospective Analysis
- Author
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Brockschmidt, C., Köksal, E., Mayer, B., Henne-Bruns, D., and Wittau, M.
- Published
- 2014
- Full Text
- View/download PDF
5. B337 External oblique fascial plane block may be a good option as a rescue analgesic method in laparoscopic upper abdominal surgeries
- Author
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Kuşderci, H, primary, Tulgar, S, additional, Genç, C, additional, and Köksal, E, additional
- Published
- 2022
- Full Text
- View/download PDF
6. THE EFFECT OF EBA AIDED TEACHING ON STUDENTS’ HEAT-TEMPERATURE AND MELTING - DISSOLVING CONCEPTIONS
- Author
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Köksal, E. A., primary and Aydogan, S., additional
- Published
- 2022
- Full Text
- View/download PDF
7. A survey of 222Rn concentrations in dwellings of Turkey
- Author
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Köksal, E. M., Çelebi, N., Ataksor, B., Ulug, A., Taşdelen, M., Kopuz, G., Akar, B., and Karabulut, M. T.
- Published
- 2004
- Full Text
- View/download PDF
8. MON-PO520: Evaluation of Energy Expendi̇ture, Hormone Levels and Nutritional Status of Patients with Sleeve Gastrectomy
- Author
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Çalapkorur, S., primary, Köksal, E., additional, Şahin, H., additional, and Şentürk, M., additional
- Published
- 2019
- Full Text
- View/download PDF
9. RADON ÖLÇÜMLERİYLE DEPREMLERİN ÖNCEDEN SAPTANMASI / Radon Monitering in Earthquake Prediction
- Author
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GÖKSEL, Selahattin A., KÖKSAL, E. Muhsin, YAŞAR, Sedat, and ALKAN, Hasan
- Published
- 2016
10. MON-P263: Increased Awareness of Obesity is Related with Decreased Metabolic Syndrome Risk in Obese Children
- Author
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Ertaş, Y., primary, Bozbulut, R., additional, and Köksal, E., additional
- Published
- 2017
- Full Text
- View/download PDF
11. Kıyısal Bölgenin Jeolojik ve Osenografik Kriterlere Göre Bilimsel ve Yasal Tanımlarının Karşılaştırılması
- Author
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KÖKSAL, E. Yeşim, KOCATAŞ, Ahmet, and BÜYÜKIŞIK, Baha
- Subjects
Kıyısal ekosistem,kıyısal zon - Abstract
Bu çalışmada kıyısal bölgenin jeolojik ve oseanografik kriterlere göre bilimsel ve yasal tanımları ve bunların karşılaştırmaları yapılmıştır. Kıyı bölgelerimiz turizm, endüstri, yerleşim ve rehabilitasyon gibi pek çok sebeplerden dolayı büyük bir baskı altındadır. Deniz, doğal ve yapay göl ve akarsu kıyıları ile bu yerlerin etkisinde olan veya devamı niteliğinde bulunan kıyı bandının doğal ve kültürel özelliklerini gözeterek koruma ve toplum yararına toplumun eşit ve serbest olarak kullanımını sağlamaktadır. Kıyısal ekosistemler sosyal, ekonomik ve ekolojik değerleriyle yeryüzünün öncelikli bölgelerini oluştururlar. Bu bölgeler gelişim alanları için yoğun baskı altındadır. Kıyıların kamu yararına kullanımları yasal zorunludur ve bu arada ekolojik yönden de doğal öğeleri arasındaki karşılıklı iletişimin sağlanması gerekir. Kıyısal ekosistemlerin ekolojik planlama ve yöntemleriyle bu baskı ve stresten kurtarılması gerekmektedir
- Published
- 2015
12. An evaluation concerning the new ex-ante regulations for the prevention of margin squeeze in the electronic communication markets in Turkey
- Author
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Ardıyok, Şahin, Köksal, E., Yüksel, B., and Ardıyok, Şahin
- Subjects
Margin squeeze ,Margin squeeze test ,Fiyat sıkıştırması ,Telekomünikasyon hukuku ,Competition law ,Competition ,Rekabet ,Fiyat sıkıştırması testi ,Rekabet hukuku ,Telecommunications law ,Regülasyon ,Regulation - Abstract
Rekabet ve regülasyona dair kuralların kesişim kümesinde yer alan fiyat sıkıştırmasının önlenmesine yönelik analizler, ilgili literatürde hacmini arttırmaktadır. Bu çalışmanın odağını Türkiye'de Rekabet Kurulu'nun aldığı kararlar ile gündeme gelen ve Bilgi Teknolojileri ve İletişim Kurumu'nun (BTK) yakın geçmişte usul ve esaslarını yayınladığı fiyat sıkıştırması meselesi oluşturmaktadır. Çalışma, rekabet hukuku kuralları çerçevesinde uygulanan fiyat sıkıştırması analizi ile BTK tarafından gerçekleştirilen analiz arasındaki ilişkiye değinmekte ve BTK tarafından uygulanan test hakkında eleştirel bir değerlendirme sunmaktadır.Bu noktada belirtmek isteriz ki, BTK tarafından uygulanan fiyat sıkıştırması testinin temelleri Avrupa Birliği'ne Katılım Öncesi Yardım Aracı (IPA - Instrument for Pre-Accession Assistance) Projeleri kapsamında yürütülen "Elektronik Haberleşme Sektöründe Rekabet Karşıtı Davranışların Önlenmesine İlişkin Teknik Yardım Projesi (EuropeAid/133078/D/SER/TR)" çerçevesinde ortaya konmuştur. Yine BTK tarafından yürütülecek fiyat sıkıştırması testinin hukuki dayanağını oluşturan "Fiyat Sıkıştırmasının Tespitine, Önlenmesine ve Giderilmesine İlişkin Usul ve Esaslar"ın (Usul ve Esaslar) hazırlanmasında bu Proje'nin desteği olmuştur. Proje'de, makalenin yazarları Şahin Ardıyok ve Barış Yüksel aktif rol almışlar ve özellikle fiyat sıkıştırması testi için yasal çerçevenin oluşumuna katkı sağlamışlardır. Şahin Ardıyok, Proje'de Kilit Hukuki Uzman, Barış Yüksel ise Uzman olarak faaliyet göstermiştir. Çalışmamızın temel amaçlarından biri de, Proje kapsamında edinilen tecrübelerin okuyucular ile paylaşılmasıdır. The volume of analyses in the literature concerning the prevention of margin squeeze, which resides in the intersection point of competition law and regulations, has been increasing. This paper focuses on the concept of margin squeeze that became popular through the decisions of the Turkish Competition Authority (TCA) and the Procedures and Principles that has recently been published by the Information and Communication Technologies Authority (ICTA). The paper examines the relation between the margin squeeze analyses that are conducted by the ICTA and the TCA and critically evaluates ICTA’s analysis methods. We would like to note that the foundations of the margin squeeze test that is being applied by the ICTA was formed during the Instrument for Pre-Accession Assistance (IPA) project titled, “Technical Assistance for Prevention of Anti-competitive Behaviors in the Electronic Communications Sector EuropeAid/133078/D/SER/TR)”. The Procedures and Principles Concerning the Finding, Preventing and Remedying of Price Squeeze, which sets the legal basis of the margin squeeze tests to be applied by the ICTA was also prepared during the course of the Project. Şahin Ardıyok and Barış Yüksel actively participated in the Project and they especially helped the creation of the legal framework for the margin squeeze tests. Şahin Ardıyok acted as the Key Legal Expert and Barış Yüksel acted as a Legal Expert in the Project. One of the main purposes of this article is to share our experiences with the readers.
- Published
- 2015
13. A community-based iron supplementation program, 'Iron-Like Turkey', and the following prevalence of anemia among infants aged 12-23 months
- Author
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Yalçin, S. S., Tezel, B., Yurdakök, K., Gulden Pekcan, Özbaş, S., Köksal, E., Tunç, B., Şahinli, S., Altunsu, A. T., Rifat, M., Buzgan, T., and Akdaǧ, R.
- Published
- 2013
14. The retrospective analysis of the patients who underwent direct laryngoscopy in terms of anesthesia between 2000 and 2010
- Author
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Karakuş O., Us?tün F.E., Kaya C., S?ner E.B., Özkan F., Köksal E., Üstün Y.B., and Ondokuz Mayıs Üniversitesi
- Subjects
Laryngoscopy ,Epidemiology ,Anesthesia - Abstract
Objective: In our study we aimed to retrospectively analyze a total of 2.233 patients who underwent direct laryngoscopy (DL) between 2000 and 2010 at Ondokuz Mayis University, Department of Anesthesiology. Method: The data were obtained by analyzing preoperative-intraoperative anesthesia registration forms and hospital computerized-automation system. Results: According to the results, the number of patients underwent DL increased over the years, the indication in 57% of the patients was benign and malignant diseases of the larynx, 88% of the patients were male, 54% were aged between 45 and 65, 15% had an ASA score of 3-4, 98% were underwent elective surgery and 64,5% had one or more additional systemic disease. 6,3% of the patients (140 patients) were identified as having a difficult intubation. Mallampati score (MS) could be obtained for only 1542 patients (69,1). Accordingly, 1482 patients (%96) had a Mallampati score of 1-2 and 60 patients (%4) had a Mallampati score of 3-4. The most commonly used agents in anesthesia were propofol (93%) for induction, succinylcholine (48%) and mivacurium (39%) as muscle relaxants, sevoflurane (%56) and nitrous oxide (68%) in maintenance. In recent years, the use of propofol, rocuronium, and remifentanil was increased. Conclusion: We suggest that several studies can be done from anesthesia records maintained regularly and systematically, and doing these studies at certain intervals may contribute to continuous assessment of the clinical interventions and to the development of anesthesiology, enabling comparisons to be made between clinics.
- Published
- 2013
15. AQP1, AQP5, Bcl-2 and p16 in pharyngeal squamous cell carcinoma
- Author
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Lehnerdt, G F, primary, Bachmann, H S, additional, Adamzik, M, additional, Panic, A, additional, Köksal, E, additional, Weller, P, additional, Lang, S, additional, Schmid, K W, additional, Siffert, W, additional, and Bankfalvi, A, additional
- Published
- 2015
- Full Text
- View/download PDF
16. Assessment Of Body Composition And Serum Lipid Profile In School Children
- Author
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Naile Bilgili, Küçükerdönmez, Ö, Köksal, E., Ayaz, A., and Beslenme ve Diyetetik
- Subjects
genetic structures ,General & Internal Medicine ,education ,lipids (amino acids, peptides, and proteins) - Abstract
Objective: To determine the relationship between body composition and blood lipid concentrations in school aged children Methodology: In this cross-sectional study, 159 children between the ages of 6 to 11 years were included Anthropometric measurements and serum total lipids profile were assessed. Results: Overweight was 6% for boys and 5% for girls. A positive correlations were observed between Total Cholestrol (TC), and BMI, waist circumference, waist to hip ratio, percentage of fat mass, arm fat area (AFA) and between triglyceride (TG), and AFA; white a negative correlation was determined between HDL-C, and fat mass, AFA for boys. No correlation was observed for these values obtained from girls. Conclusion: This study has shown that in comparison to girls, the overweight and the correlation of body composition and lipid profiles were higher in boys with a tendency to develop the higher risk level of cardio vascular disease.
- Published
- 2009
17. Expression von Aquaporin 1 und Aquaporin 5 in Speicheldrüsenkarzinomen
- Author
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Arweiler-Harbeck, D, Öztürk, E, Köksal, E, Kelava, A, and Bankfalvi, A
- Subjects
ddc: 610 - Published
- 2008
18. Laparoskopik feokromositoma cerrahisinde anestezik yaklaşim
- Author
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Kelsaka E., Karakaya D., Sanhasan B., Köksal E., Karacalar S., and Ondokuz Mayıs Üniversitesi
- Subjects
endocrine system ,endocrine system diseases ,Intraabdominal pressure ,Anesthesia ,Laparoscopy ,Pheochromocytoma - Abstract
Surgical resection of adrenal pheochromocytoma is often performed laparoscopic. The advantages of laparoscopic pheochromocytoma are reduced pain, reduced length of hospital stay, and more rapid return to normal activity. During pnomoperitoneum and tumor manipulation in laparoscopy, there is a risk of hypertensive events due to catecholamine secretion and increased intraabdominal pressure. In this case report we discussed the correction of hemodynamic alterations by reducing intraabdominal pressure during laparoscopic pheochromocytoma resection.
- Published
- 2008
19. A comparative study on the antioxidant activity of fringe tree (Chionanthus virginicus L.) extracts
- Author
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Gülçin, Ý, Elias, R, Gepdiremen, A, Boyer, L, Köksal, E, and Ondokuz Mayıs Üniversitesi
- Subjects
radical scavenging ,Chionanthus virginicus ,oleaceae ,antioxidant activity ,fringe tree ,radical scavenging, metal chelating ,metal chelating - Abstract
GULCIN, Ilhami/0000-0001-5993-1668 WOS: 000248673700016 Fringe tree (Chionanthus virginicus L.) is used as a raw material by pharmaceutical industries for the preparation of homeopathy tinctures. In this study, antioxidant activity of methanol extract (MEFT) and ethylacetate extract (EEFT) from root bark of fringe tree (C. virginicus L.) were evaluated. 2,2-Azinobis( 3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) radical scavenging, 1,1-diphenyl-2-picryl-hydrazyl free radical (DPPH circle) scavenging, superoxide anion (O-2(circle-)) radical scavenging, total antioxidant activity, reducing activity, hydrogen peroxide (H2O2) scavenging and ferrous metal chelating activities were for used antioxidant evaluation of MEFT and EEFT. The both extracts neutralized the activities of radicals and inhibited the peroxidation reactions of linoleic acid emulsion. Total antioxidant activity was measured according to ferric thiocyanate method. Butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), alpha-tocopherol and trolox, a water-soluble analogue of tocopherol, were used as the reference antioxidant compounds. MEFT and EEFT showed 69.4, 79.3, 72.3 and 83.7% inhibition on lipid peroxidation of linoleic acid emulsion, respectively, at the 10 and 20 mu g/mL concentrations. On the other hand, 20 mu g/mL of alpha-tocopherol, trolox, BHA and BHT exhibited 54.7, 20.1, 74.4 and 71.2% inhibition on peroxidation of linoleic acid emulsion, respectively. Also, MEFT and EEFT have effective DPPH circle, ABTS(circle+) and superoxide anion radicals scavenging, hydrogen peroxide scavenging, total reducing power and metal chelating on ferrous ions activities.
- Published
- 2007
20. A survey of222Rn concentrations in dwellings of Turkey
- Author
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Köksal, E. M., primary, Çelebi, N., additional, Ataksor, B., additional, Ulug, A., additional, Taşdelen, M., additional, Kopuz, G., additional, Akar, B., additional, and Karabulut, M. T., additional
- Published
- 2004
- Full Text
- View/download PDF
21. Association between anthropometric measurements and dental caries in Turkish school children.
- Author
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Köksal E, Tekçiçek M, Yalçin SS, Tugrul B, Yalçin S, Pekcan G, Köksal, Eda, Tekçiçek, Meryem, Yalçin, Siddika Songül, Tuğrul, Belma, Yalçin, Suzan, and Pekcan, Gülden
- Abstract
Aim: To evaluate the association between anthropometric measurements and dental caries in school children.Methods: The study was conducted on 245 primary school children (50.2% boys, 49.8% girls,), aged 5 to 9 years. The prevalence and severity of dental caries was measured using the decayed, missing or filled surfaces (dmfs, DMFS) and teeth (dmft, DMFT) indices.Results: Mean dmft indices in children for boys and girls were 5.5 +/- 3.92 and 5.0 +/- 3.64, respectively. The prevalence of children with dental caries (dmft > or = 1) was 84.9%. The prevalence of children with body mass index (BMI) <-1SD and > or = +1SD was 15.9% and 22.9%, respectively. Dental caries were found in 89.7% of children with low body weight (including underweight and at risk for underweight) and in 66.1% of overweight-obese children (p<0.05). Similarly, high indices were detected significantly more often in children with low body weight (p<0.05). Height, weight, BMI and percent of fat mass were found to be negatively correlated with dmft indices (r:-0.141, p: 0.028; r:-0.171, p: 0.007; r:-0.139, p: 0.030; r:-0.158, p: 0.013, respectively).Conclusion: Children with low body weight have a higher risk of developing dental caries than overweight-obese children. For these reasons, the evaluation of nutritional status in children should be implemented in control programs for dental caries both on the community and individual levels. [ABSTRACT FROM AUTHOR]- Published
- 2011
22. A survey of 222Rn concentrations in dwellings of Turkey.
- Author
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Köksal, E. M., Çelebi, N., Ataksor, B., Ulug, A., Taşdelen, M., Kopuz, G., Akar, B., and Karabulut, M. T.
- Subjects
- *
BACKGROUND radiation , *DWELLINGS , *NUCLEAR counters , *NUCLEAR track detectors , *RADIOACTIVITY instruments - Abstract
As part of a national program to determine public exposure to natural radiation, indoor air 222Rn concentrations were determined in dwellings of Turkey. The 222Rn concentrations were measured with time-integrating passive nuclear etched track detectors in 27 provincial centers. The indoor radon concentrations were found to be in the range of 10-380 Bq.m-3. [ABSTRACT FROM AUTHOR]
- Published
- 2004
23. Sayım istatistiği
- Author
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Köksal, E. Muhsin and TAEK-ÇNAEM
- Subjects
İstatistik ,Statistics ,Counting of radioactive samples ,Radyoaktif örneklerin sayımları - Abstract
TENMAK D.N.. 8043 Radyoaktif örneklerin sayılmaları sonucu elde edilen değerlerin yorumlanmasında istatistik gerekli ve faydalıdır. Bu nedenle, konuya yeni girenler için yalın bir kaynak olarak yararlı olacağı düşüncesiyle, istatistik kurallarını sayım datasına uygulamada pratik bir yaklaşım verilmeye çalışılmıştır. Teoriye çok az yer vererek sayım istatistiğinde kullanılan Normal Dağılım, Poisson Dağılımı,Standard Sapma Kavramı, Sayımın ve Net Sayımın standard sapmalarının hesabı, Null Hipotezi, Sayım Cihazlarının Güvenirliliği'ni test etmeye yarayan Ki-Kare Testi ve bazı özel problemler anlatılmıştır. Sözü edilen konular örneklerle açıklanmış, formüller kaynaklardan doğrudan doğruya alınmıştır. Amaç, istatistiğin uygulanması olduğuna göre bazı terimlerin nereden geldiğine ve nedenine yer verilmemiştir. Bununla birlikte fazla bilgi için bazı kaynaklar verilmiştir.
- Published
- 1977
24. BULANIK MANTIK TABANLI BİR SAYISAL KORUMA RÖLESİNİN TASARIMI VE UYGULAMASI
- Author
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İ. Hakkı Altaş and Köksal Erentürk
- Subjects
fuzzy logic ,power systems ,protective relays ,digital protection ,modelling ,bulanık mantık ,enerji sistemleri ,koruma röleleri ,sayısal koruma ,modelleme ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
Karmaşık bir yapıya sahip olan elektrik güç sistemlerinin meydana gelen arızalara karşı korunabilmesi için bulanık mantık tabanlı sayısal koruma rölesinin tasarımı ve prototip laboratuar modeli üzerinde gerçekleştirilmesi bu çalışmada incelenmiştir. Laboratuar ortamında bir prototip oluşturulmuş ve sonuçlar elde edilmiştir. Tasarlanan bulanık mantık tabanlı sayısal koruma rölesi çok amaçlı yapıya sahip olup, korumanın yanısıra işletime yönelik karar mekanizması da oluşturulabilmektedir.
- Published
- 2002
25. DESIGN AND APPLICATION OF A DIGITAL PROTECTIVE RELAY BASED ON FUZZY LOGIC
- Author
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Köksal ERENTÜRK and İ. Hakkı ALTAŞ
- Subjects
Bulanık mantık, Enerji sistemleri, Koruma röleleri, Sayısal koruma, Modelleme ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
A fuzzy logic based digital relay has been designed in order to protect power system networks for reliable operation. A prototype model of the relay has been established and tested in a laboratory environment. The relay designed has multi-functional behavior so that it gives information not only existence the type of fault but also the type, location, and duration of the faults. Some additional functions can also be included in the relay structure. The performance of the relay for detecting faults, type of faults, and the location has been tested and results are given in this paper.
- Published
- 2002
26. BULANIK MANTIK TABANLI BİR SAYISAL KORUMA RÖLESİNİN TASARIMI VE UYGULAMASI
- Author
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Köksal ERENTÜRK and İ. Hakkı ALTAŞ
- Subjects
fuzzy logic ,power systems ,protective relays ,digital protection ,modelling ,bulanık mantık ,enerji sistemleri ,koruma röleleri ,sayısal koruma ,modelleme ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
Karmaşık bir yapıya sahip olan elektrik güç sistemlerinin meydana gelen arızalara karşı korunabilmesi için bulanık mantık tabanlı sayısal koruma rölesinin tasarımı ve prototip laboratuar modeli üzerinde gerçekleştirilmesi bu çalışmada incelenmiştir. Laboratuar ortamında bir prototip oluşturulmuş ve sonuçlar elde edilmiştir. Tasarlanan bulanık mantık tabanlı sayısal koruma rölesi çok amaçlı yapıya sahip olup, korumanın yanısıra işletime yönelik karar mekanizması da oluşturulabilmektedir.
- Published
- 2002
27. Detailed Analysis of SCARA-Type Serial Manipulator on a Moving Base with LabView
- Author
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Alirıza Kaleli, Ahmet Dumlu, M. Fatih Çorapsız, and Köksal Erentürk
- Subjects
Electronics ,TK7800-8360 ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
Robotic manipulators on a moving base are used in many industrial and transportation applications. In this study, the modelling of a RRP SCARA-type serial manipulator on a moving base is presented. A Lagrange-Euler approach is used to obtain the complete dynamic model of the moving-base manipulator. Hence, the dynamic model of the manipulator and the mobile base are expressed separately. In addition, Virtual Instrumentation (VI) is developed for kinematics, dynamics simulation and animation of the manipulator combined with the moving-base system. Using the designed VI in LabView, the relationship between frequency of disturbances of the moving base and joint torques is investigated. The obtained results are presented in graphs.
- Published
- 2013
- Full Text
- View/download PDF
28. Validity and Reliability of the Turkish Version of the Screening Questionnaire of Highly Processed Food Consumption (sQ-HPF).
- Author
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Erdoğan Gövez N, Köksal E, Martinez-Perez C, and Daimiel L
- Subjects
- Adult, Female, Humans, Male, Middle Aged, Diet statistics & numerical data, Diet Surveys standards, Feeding Behavior, Food Handling, Reproducibility of Results, Surveys and Questionnaires standards, Translations, Turkey, Diet Records, Food, Processed statistics & numerical data
- Abstract
The global consumption of highly (ultra) processed foods (HPFs) is increasing, and it is associated with non-communicable diseases. This study aimed to assess the validity and reliability of the Screening Questionnaire of Highly Processed Food Consumption (sQ-HPF). This study included 94 adults. Sociodemographic data were collected, and anthropometric and blood pressure measurements were performed. The sQ-HPF was translated into Turkish and culturally adapted. Dietary intake was assessed using three-day dietary records. Factor analysis and Cronbach's alpha were used to evaluate the validity and consistency of the sQ-HPF. Test-retest reliability was assessed with the intraclass correlation coefficient (ICC). Three items from the original sQ-HPF were excluded due to low factor loadings. The Kaiser-Meyer Olkin (KMO) coefficient for the measure of sample adequacy was found to be 0.642 and Bartlett's test of sphericity was found to be significant ( p < 0.001). A significant correlation was found between the sQ-HPF score and HPF consumption derived from the 3-day dietary records ( p < 0.05). Cronbach's alpha was found to be 0.65. Individuals with higher sQ-HPF scores consumed a significantly greater percentage of energy from HPFs (kcal/day) ( p < 0.001). The sQ-HPF demonstrated good test-retest reliability (ICC = 0.76). The Turkish version of the sQ-HPF is a valid and reliable tool for assessing HPF consumption patterns and can be used in epidemiological and clinical studies.
- Published
- 2024
- Full Text
- View/download PDF
29. Association between ecological footprint awareness and health literacy in adults: a population-based study from Turkey.
- Author
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Mengi Çelik Ö, Köksal E, Akpinar Ş, Kocaadam Bozkurt B, Erdoğan Gövez N, Çıtar Dazıroğlu ME, Karaçil Ermumcu MŞ, and Acar Tek N
- Subjects
- Adult, Humans, Turkey, Health Literacy
- Abstract
This study aimed to determine the relationship between health literacy and ecological footprint which is an indicator of sustainability and environmental impact and to examine the factors that may affect them. It was found that 20.3% of individuals have inadequate, 43.7% problematic, 26.1% sufficient and 10.0% excellent health literacy levels. There were differences in age, education level and BMI classification according to Ecological Footprint Awareness Scale score quartiles and health literacy levels (p < 0.05). It was determined that age and Turkey Health Literacy Scale score had effect on ecological footprint awareness. Individuals with a high level of health literacy have a high awareness of their ecological footprint. The increase in people's health literacy levels and ecological footprint awareness with age can be interpreted as the increase in people's education and knowledge levels and their awareness levels against the protection of nature and the environment.
- Published
- 2024
- Full Text
- View/download PDF
30. Two new compounds from endemic Centaurea paphlagonica (Bornm.) Wagenitz and their cytotoxic activities.
- Author
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Tüfekçi AR, Demirtaş İ, Akşit H, Arslan Ş, Kocabıyık K, Zeybek S, Ozen T, and Köksal E
- Subjects
- Humans, Caco-2 Cells, Chlorogenic Acid, HEK293 Cells, Plant Extracts pharmacology, Plant Extracts chemistry, Centaurea chemistry, Antineoplastic Agents chemistry, Methyl Ethers
- Abstract
Centaurea paphlagonica (Bornm.) Wagenitz is an endemic plant in Turkey. Pyrocatechol, vanillic acid, 3,4-dihydroxy benzoic acid, 5-O-caffeoylshikimic acid, tamarixetin, chlorogenic acid methyl ester, quercetin, 1,3-dicaffeoylquinic acid, tamarixetin-7-O-β-D-glucopyranoside, quercimetrin, daucosterin, paphlagonicanin B, tamarixetin-7-O-β-rutinoside, rutin, chlorogenic acid, isoorientin, orientin, 3-O-feruloylquinic acid, quercetagetin-3-methyl ether 6-O-β-glucopyranoside, diosmetin 6-C-β-glucopyranoside, quercetagetin 4'-methyl ether 7-O-β-glucopyranoside, paphlagonicanin A, nepetin, cirsiliol, desacylcynaropicrin, and 8α-O-(2',3'-dihydroxyisobutyryl) desacylcynaropicrin were isolated from both flower and aerial parts of C. paphlagonica. These compounds were identified using 1D and 2D NMR methods and ESI-MS. The MTT assay assessed the antiproliferative activities of all isolated (known and new compounds) compounds on Caco-2, LNCaP, A549, HeLa, and HEK-293 cell lines. The 8α-O-(2',3'-dihydroxyisobutyryl) desacylcynaropicrin demonstrated the highest activity against CaCo-2 and HeLa cancer cell lines., (© 2023 John Wiley & Sons Ltd.)
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- 2024
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31. Evaluation of the Turkey Nutrition and Health Surveys according to the mediterranean adequacy index and sustainability through water footprints.
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Erdoğan Gövez N, Akpınar Şentüre Ş, Ayten Ş, and Köksal E
- Subjects
- Male, Adult, Female, Humans, Adolescent, Environment, Diet, Western, Health Surveys, Nutritional Status, Diet, Mediterranean
- Abstract
Objective: Sustainable diet is one of the main factors that support food security, and the Mediterranean diet (MD) one of the sustainable diet models associated with low ecological impact and optimum health results has come to the fore. It was aimed to compare the results of the 2010 and 2017 Turkey Nutrition and Health Studies (TNHS) according to the Mediterranean Adequacy Index (MAI) and in order to evaluate the environmental impact of the current nutritional status in Turkey through water footprints (WF)., Design: The MAI score was calculated using the published results of the 2010 and 2017 TNHS, and the WF have been calculated as indicators of environmental impact., Setting: Turkey., Participants: There are no participants., Results: In the TNHS, there was an increase in the amount of energy provided by foods non-MD in 2017 compared to 2010, with a decrease in the total MAI score. The group with the lowest adherence to the MD in both years was the adult group (MAI
2010 2·74 and MAI2017 2·31), while the group with the highest adherence was the adolescent group (MAI2010 3·21 and MAI2017 2·53). The MAI scores of females were higher than those of males in both years. The males aged 19-64 years had the largest (841 m3 /year) WF and the females aged 65+ years had the smallest (483 m3 /year). The food group that contributed the most to WF was meat and meat products (21·0-35·0 %)., Conclusions: Adherence to the MD has decreased due to the increase in the consumption of the Western-type diet in Turkey.- Published
- 2023
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32. Ferruginoside D: A Novel Phenylethanoid from Verbascum leiocarpum.
- Author
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Şimşek S, Akşit H, Aydın A, and Köksal E
- Subjects
- Female, Humans, Antioxidants pharmacology, Cell Line, Tumor, Plant Extracts pharmacology, Plant Extracts chemistry, Luteolin, alpha-Glucosidases, Verbascum chemistry, Ovarian Neoplasms
- Abstract
A novel phenylethanoid, ferruginoside D, together with fourteen known compounds were isolated from the Verbascum leiocarpum for the first time. Chemical structures of isolated compounds were determined by spectroscopic analysis including HR-ESI-MS and NMR spectra. The antioxidant, α-glucosidase inhibitory properties, and antiproliferative activities against multiple cell lines (A172, C6, HeLa, A2780, SW620, HT29, Beas2B, RPE, and HSF) of the isolated compounds were evaluated in vitro. According to the results, iridoids, flavonoids (luteolin and apigenin), and phenylethanoids (poliumoside and isoverbascoside) with strong antiproliferative potential were also found to have cytostatic effects. Furthermore, the investigation revealed that compounds luteolin, poliumoside, verbascoside, isoverbascoside, ferruginoside C, ferruginoside D, and ursolic acid show potent alpha-glucosidase inhibitory activity, while compounds luteolin, verbascoside, and isoverbascoside exhibit substantial antioxidant activity. The new compound (ferruginoside D) was found moderately active against cancer cell lines, with strong alpha-glucosidase inhibitory activity, and moderate antioxidant properties., (© 2023 Wiley-VHCA AG, Zurich, Switzerland.)
- Published
- 2023
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33. Evaluation of sustainable and healthy eating behaviors and adherence to the planetary health diet index in Turkish adults: a cross-sectional study.
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Macit-Çelebi MS, Bozkurt O, Kocaadam-Bozkurt B, and Köksal E
- Abstract
Aim: The Planetary Health Diet Index (PHDI) is a relatively new index, and studies about its relationship with eating behaviors, nutritional status, and obesity in adults are very limited. For this reason, in this study, sustainable healthy eating behaviors of individuals and compliance of their diets with PHDI were evaluated., Methods: This cross-sectional study was conducted with 1,112 adults (70.1% women and 29.9% men with mean age = 28.7 years, SE = 9.47). Study data were obtained with the face-to-face interview method via a questionnaire including sociodemographic characteristics, anthropometric measurements, the Sustainable and Healthy Eating (SHE) Behaviors Scale, and 24-h dietary recall. PHDI was evaluated for adherence to EAT-Lancet Commission recommendations., Results: The average PHDI total score was 41.5 points. Higher SHE Behaviors Scale and PHDI scores were observed in participants with a duration of education above 8 years ( p < 0.05). Those with lower SHE Behaviors Scale and PHDI scores were more likely to be obese ( p < 0.001). The total PHDI score was positively associated with fiber, vitamin E, potassium, and folate, and negatively associated with pyridoxine and calcium ( p < 0.05). The total SHE Behaviors Scale score was positively associated with carbohydrates, fiber, and potassium and negatively associated with pyridoxine, calcium, and energy ( p < 0.05). A one-unit increase in SHE Behaviors Scale total score resulted in a 5,530 unit (95%CI: 4.652; 6.407) increase in PHDI total score and a one-unit increase in duration of education (years) resulted in a 0.660 unit (95%CI: 0.403; 0.918) increase in PHDI total score. Furthermore, a one-unit increase in Body Mass Index (BMI) (kg/m
2 ) resulted in a - 0.218 unit (95%CI: -0.424; -0.013) decrease in PHDI total score., Conclusion: The participants' PHDI index scores were low; therefore, the adherence to the EAT-Lancet recommendation was low which might be associated with obesity. Clinical studies evaluating the effects of adherence to sustainable diets on adequate and balanced nutrition and health outcomes are recommended., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Macit-Çelebi, Bozkurt, Kocaadam-Bozkurt and Köksal.)- Published
- 2023
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34. Antioxidant, Antiglaucoma, Anticholinergic, and Antidiabetic Effects of Kiwifruit ( Actinidia deliciosa ) Oil: Metabolite Profile Analysis Using LC-HR/MS, GC/MS and GC-FID.
- Author
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Ozden EM, Bingol Z, Mutlu M, Karagecili H, Köksal E, Goren AC, Alwasel SH, and Gulcin İ
- Abstract
Determining the antioxidant abilities and enzyme inhibition profiles of medicinally important plants and their oils is of great importance for a healthy life and the treatment of some common global diseases. Kiwifruit ( Actinidia deliciosa ) oil was examined and researched using several bioanalytical methods comprehensively for the first time in this research to determine its antioxidant, antiglaucoma, antidiabetic and anti-Alzheimer's capabilities. Additionally, the kiwifruit oil inhibitory effects on acetylcholinesterase (AChE), carbonic anhydrase II (CA II), and α-amylase, which are linked to a number of metabolic illnesses, were established. Furthermore, LC-HRMS analysis was used to assess the phenolic content of kiwifruit oil. It came to light that kiwifruit oil contained 26 different phenolic compounds. According to the LC-HRMS findings, kiwifruit oil is abundant in apigenin (74.24 mg/L oil), epigallocatechin (12.89 mg/L oil), caryophyllene oxide (12.89 mg/L oil), and luteolin (5.49 mg/L oil). In addition, GC-MS and GC-FID studies were used to ascertain the quantity and chemical composition of the essential oils contained in kiwifruit oil. Squalene (53.04%), linoleoyl chloride (20.28%), linoleic acid (2.67%), and palmitic acid (1.54%) were the most abundant compounds in kiwifruit oil. For radical scavenging activities of kiwifruit oil, 1,1-diphenyl-2-picryl-hydrazil (DPPH
• ) and 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS•+ ) radicals scavenging techniques were examined. These methods effectively demonstrated the potent radical scavenging properties of kiwifruit oil (IC50 : 48.55 μg/mL for DPPH• , and IC50 : 77.00 μg/mL for ABTS•+ scavenging). Also, for reducing capabilities, iron (Fe3+ ), copper (Cu2+ ), and Fe3+ -2,4,6-tri(2-pyridyl)-S-triazine (TPTZ) reducing abilities were studied. Moreover, kiwifruit oil showed a considerable inhibition effect towards hCA II (IC50 : 505.83 μg/mL), AChE (IC50 : 12.80 μg/mL), and α-amylase (IC50 : 421.02 μg/mL). The results revealed that the use of kiwifruit oil in a pharmaceutical procedure has very important effects due to its antioxidant, anti-Alzheimer, antidiabetic, and antiglaucoma effects.- Published
- 2023
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35. Children's eating attitudes test (ChEAT): validation and reliability in Turkish children.
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Bozkurt O, Kocaadam-Bozkurt B, Köksal E, and Özalp Ateş FS
- Abstract
Objectives: This study aims to examine the validity and reliability of the children's eating attitudes test (ChEAT) in Turkish children., Methods: The participants were 331 children (137 boys and 194 girls, ages 8-15). Data was collected through face-to-face interviews using a questionnaire containing socio-demographic characteristics, the ChEAT, and the children's eating behaviour questionnaire (CEBQ). Exploratory factor analysis (EFA) was performed to determine the factor structure of the Turkish version of the ChEAT. Additionally, the reliability was examined in terms of internal consistency and test-retest reliability. All statistical analyses were performed using Mplus Trial Version and SPSS 11.5 (SPSS, Chicago, IL, USA)., Results: According to the goodness-of-fit statistic, a three-factor solution was appropriate and compatible with clinical considerations. The three factors explained 50.1% of the variance. Cronbach's alpha coefficient was 0.75 for ChEAT-26, 0.67 for "Preoccupation with thinness and food", 0.63 for "Social pressure to eat", and 0.71 for "Dieting". Furthermore, the test-retest reliability was 0.72, 0.62, 0.59, and 0.59 respectively. Statistically significant correlations between the ChEAT and CEBQ were found (p < 0.05). "Preoccupation with thinness and food" was significantly higher in obese children (p < 0.05), while "Social pressure to eat" was lower (p < 0.001). Sex, grade, BMI, parental education in addition to working status affected the ChEAT-26 scores., Conclusions: The present study has provided preliminary evidence for the validity and reliability of a Turkish version of the ChEAT., (© 2023. The Author(s).)
- Published
- 2023
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36. Time-restricted eating (16/8) and energy-restricted diet: effects on diet quality, body composition and biochemical parameters in healthy overweight females.
- Author
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Mengi Çelik Ö, Köksal E, and Aktürk M
- Abstract
Background: Time-restricted eating (TRE) is a current popular dietary strategy for noncommunicable diseases. However, studies demonstrated contradictory results for it and in all dietary strategies, diet quality is an the important part of the well-being. Our study aimed to investigate the effect of TRE and energy-restricted diet (ERD) on the nutritional status and diet quality of individuals., Methods: This pilot study was completed 23 healthy overweight female. Anthropometric and body composition measurements of individuals were taken. The energy expenditure was measured using indirect calorimetry. Blood pressure and heart rate measurements were made. Biochemical parameters were evaluated and food consumption were taken. The quality of dietary intake was assessed using the Healthy Eating Index (HEI) -2015. The physical activity levels of the individuals were estimated using the physical activity record. The Statistical Package for the Social Sciences (version 22.0) software was used for all analyses. A p-value of less than 0.05 was considered to be statistically significant., Results: After 8 weeks of intervention, while no change was observed in the diet quality of the individuals in the TRE group (p > 0.05), a significant increase was found in the diet quality score of the individuals in the ERD group (p < 0.05). There was a 3.2% and 5.5% decrease in body weight of individuals in the TRE and ERD groups, respectively (p < 0.05). While no significant change was observed in the body fat percentage of individuals in the TRE group (p > 0.05), a 7.1% decrease was observed in the ERD group (p < 0.05). A statistically significant decrease was found in the total cholesterol (3.7%) in the ERD group, and in the total cholesterol (6.7%) and low density lipoprotein cholesterol (LDL-C) (6.5%) in the TRE group. In addition, a statistically significant increase was found in adiponectin (77.3%) and total antioxidant status (TAS) (13.2%) in the ERD group., Conclusion: Energy-restricted diet yielded better results in weight loss and improvement of body composition and diet quality compared to TRE. Also, a decrease in total cholesterol level was found in the ERD group. However, more studies should be done with longer follow-ups and high sample sizes are very important in terms of creating public health-based recommendations., (© 2023. BioMed Central Ltd., part of Springer Nature.)
- Published
- 2023
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37. Isolation, characterization and anticancer activity of secondary metabolites from Verbascum speciosum.
- Author
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Demirci S, Alp C, Akşit H, Ulutaş Y, Altay A, Yeniçeri E, Köksal E, and Yaylı N
- Subjects
- Mice, Animals, Humans, Plant Extracts pharmacology, Plant Extracts chemistry, Glucosides pharmacology, Verbascum chemistry
- Abstract
Herein, two iridoid glucosides aucubin (1) and ajugol (2), and two phenyl ethanoids, verbascoside (3) and poliumoside (4) were isolated from the methanol extract of the aerial parts of Verbascum speciosum and used to study about their anticancer activity for the first time. The structures of all compounds were elucidated using spectroscopic data (IR, 1D and 2D NMR, LC-TOF/MS). Antiproliferative activities of Aucubun (1) and Verbascoside (3) were tested against A-549 (human colon cancer), MDA-MD-453 (human breast cancer) and 3T3-L1 (mouse fibroblast)cell lines by XTT assay. In addition, the anticarcer mechanism of action of aucubin (1) was investigated on MDA-MB-453 cells for the first time. XTT result showed that both applied compounds exhibited antiproliferative effect at different dose ranges depending on the cancer type, as well as selectivity between cancer and healty cell lines. Flow cytometry analyzes revealed that aucubin (1) exerts its cytotoxic effect in MDA-MB-453 cells by directing cells to early apoptosis and inhibiting the P13K/AKT signaling pathway., (© 2023 John Wiley & Sons Ltd.)
- Published
- 2023
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38. Association between adherence to the Mediterranean diet with anthropometric measurements and nutritional status in adolescents.
- Author
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Kocaadam-Bozkurt B, Karaçil Ermumcu MŞ, Erdoğan Gövez N, Bozkurt O, Akpinar Ş, Mengi Çelik Ö, Köksal E, and Acar Tek N
- Subjects
- Male, Female, Humans, Adolescent, Child, Body Composition, Obesity, Overweight epidemiology, Body Mass Index, Feeding Behavior, Nutritional Status, Diet, Mediterranean
- Abstract
Introduction: Background: adolescence is a critical period for developing healthy eating habits. It is crucial to evaluate and encourage adherence to the Mediterranean diet, a sustainable and healthy diet model in this age group. Objective: this study aimed to evaluate the relationship between adherence to the Mediterranean diet and anthropometric measurements and nutritional status in Turkish adolescents. Material and methods: the demographic characteristics, health information, nutritional habits, physical activity status, and 24-hour dietary recall of the adolescents were obtained with a questionnaire. Adherence to Mediterranean diet was evaluated with the Mediterranean-Style Dietary Pattern Score (MSDPS). Results: a total of 1,137 adolescents (mean age 14.0 ± 1.37 years) were included; 30.2 % of the boys and 39.5 % of the girls were overweight/obese. The median (interquartile range) value of the MSDPS was 10.7 (7.7), and this value was 11.0 (7.6) for the boys and 10.6 (7.4) for the girls (p > 0.05). The levels of protein, fiber, vitamin A, vitamin C, folate, vitamin B12, iron, magnesium, zinc, and potassium intake increased with adherence to Mediterranean diet (p < 0.001). Age, parental education level, body mass index (BMI), waist circumference, and skipping meals affected MSDPS. Conclusion: adolescents' adherence to the Mediterranean diet was low and correlated with some anthropometric measures. Increasing adherence to the Mediterranean diet may contribute to preventing obesity and adequate and balanced nutrition in adolescents.
- Published
- 2023
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39. Validity and reliability of food frequency questionnaire used in age-related eye disease studies in Turkish adults.
- Author
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Akpınar Ş and Köksal E
- Subjects
- Humans, Adult, Reproducibility of Results, Turkey, Surveys and Questionnaires, Antioxidants, Eye Diseases
- Abstract
The present study aimed to perform the validity and reliability study of the Food Frequency Questionnaire (FFQ) on the frequency of foods rich in antioxidant nutrients and used in Age-Related Eye Diseases (AREDs). In the first interview of the study, the first application of FFQ was carried out, and blank forms of Dietary Records (DRs) were given. For the validity of the FFQ, a total of 12 d (3 days * 4 weeks) of DR were taken. For the reliability of the FFQ, a test-retest application was made with an interval of 4 weeks. The daily intake means of antioxidant nutrients, omega 3 and total antioxidant capacity data obtained from both the FFQ and DR were calculated, and the concordance between the two methods was evaluated with the Pearson Correlation Coefficient (PCC) and Bland-Altman graphs. The present study was carried out at Ege University İzmir/Turkey, Department of Ophthalmology, Retina Unit. The study was conducted with individuals aged ≥50 years who suffered from Age-Related Macular Degeneration ( n 100, 72⋅0 ± 8⋅03 years). The values obtained from the test-retest applications for FFQ reliability were the same. The nutrient intake means obtained from the FFQ were similar or significantly higher than DR ( P < 0⋅05). In the Bland-Altman graphical approach, the nutrient data were within the limits of agreement, and the PCCs between the two methods were moderately related. Considered together, this FFQ is a suitable tool for determining the dietary intakes of antioxidant nutrients in the Turkish population., (© The Author(s) 2023.)
- Published
- 2023
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40. Comprehensive Metabolite Profiling of Cinnamon ( Cinnamomum zeylanicum ) Leaf Oil Using LC-HR/MS, GC/MS, and GC-FID: Determination of Antiglaucoma, Antioxidant, Anticholinergic, and Antidiabetic Profiles.
- Author
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Mutlu M, Bingol Z, Uc EM, Köksal E, Goren AC, Alwasel SH, and Gulcin İ
- Abstract
In this study, for the first time, the antioxidant and antidiabetic properties of the essential oil from cinnamon ( Cinnamomum zeylanicum ) leaves were evaluated and investigated using various bioanalytical methods. In addition, the inhibitory effects of cinnamon oil on carbonic anhydrase II (hCA II), acetylcholinesterase (AChE), and α-amylase, which are associated with various metabolic diseases, were determined. Further, the phenolic contents of the essential oil were determined using LC-HRMS chromatography. Twenty-seven phenolic molecules were detected in cinnamon oil. Moreover, the amount and chemical profile of the essential oils present in cinnamon oil was determined using GC/MS and GC-FID analyses. ( E )-cinnamaldehyde (72.98%), benzyl benzoate (4.01%), and trans -Cinnamyl acetate (3.36%) were the most common essential oils in cinnamon leaf oil. The radical scavenging activities of cinnamon oil were investigated using 1,1-diphenyl-2-picryl-hydrazil (DPPH
• ), 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid), and (ABTS•+ ) bioanalytical scavenging methods, which revealed its strong radical scavenging abilities (DPPH• , IC50 : 4.78 μg/mL; and ABTS•+ , IC50 : 5.21 μg/mL). Similarly, the reducing capacities for iron (Fe3+ ), copper (Cu2+ ), and Fe3+ -2,4,6-tri(2-pyridyl)-S-triazine (TPTZ) were investigated. Cinnamon oil also exhibited highly effective inhibition against hCA II (IC50 : 243.24 μg/mL), AChE (IC50 : 16.03 μg/mL), and α-amylase (IC50 : 7.54μg/mL). This multidisciplinary study will be useful and pave the way for further studies for the determination of antioxidant properties and enzyme inhibition profiles of medically and industrially important plants and their oils.- Published
- 2023
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41. Screening for malnutrition with malnutrition inflammation score and geriatric nutritional risk index in hemodialysis patients.
- Author
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Deniz Güneş B and Köksal E
- Subjects
- Adult, Aged, Female, Geriatric Assessment, Humans, Inflammation complications, Male, Middle Aged, Nutrition Assessment, Nutritional Status, Risk Factors, Malnutrition diagnosis, Malnutrition etiology, Renal Dialysis adverse effects
- Abstract
Background and Aims: Screening malnutrition, which is the most common complication in hemodialysis patients, is extremely important for these patients. Malnutrition inflammation score (MIS) and geriatric nutritional risk index (GNRI) are malnutrition screening tests used in hemodialysis patients in recent years. The purposes of this study are to evaluate the nutritional status of hemodialysis patients with different screening tests and to determine the cutoff values for this disease-specific MIS and GNRI., Methods: The study was conducted with 194 adult patients including 98 males and 96 females whose mean age was 53.1 ± 10.96. Subjective global assessment (SGA) and MIS tests were applied, and the GNRI value was calculated for screening malnutrition. MIS and GNRI cutoff values were obtained by adopting the SGA scores as a standard and drawing a receiver operating characteristic curve. The tatistical Package for the Social Sciences-22.0 package program was used in the analysis., Results: According to SGA, 70.7% of the patients were nourished, 21.1% were mildly-moderately malnourished, and 8.2% were found to be severely malnourished. The optimal cutoff value predicted for malnutrition was 6.5 points (94.7% sensitivity and 98.5% specificity) for MIS and 86.0 points (64.9% sensitivity and 62.8% specificity) for GNRI. Based on these cutoff values, 28.9% of the patients were determined to be malnourished according to MIS and 45.4% according to GNRI., Conclusion: In conclusion, screening tests are very important in the early identification of malnutrition in hemodialysis patients. This study was conducted to evaluate the malnutrition of hemodialysis patients with different screening tests. At the end of the study, the availability of MIS was found to be high in detecting malnutrition in hemodialysis patients because of its high accuracy and sensitivity of MIS. The cutoff points we identified for both MIS and GNRI are thought to facilitate the determination of malnutrition., (© 2022 International Society for Hemodialysis.)
- Published
- 2022
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42. Effects of Diurnal Ramadan Intermittent Fasting on Cardiometabolic Risk Factors and Sleep Quality in Healthy Turkish Adults.
- Author
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Mengi Çelik Ö, Koçak T, and Köksal E
- Subjects
- Adult, Blood Glucose, C-Reactive Protein metabolism, Cardiometabolic Risk Factors, Female, Humans, Lipids, Male, Sleep Quality, Tumor Necrosis Factor-alpha, Turkey epidemiology, Young Adult, Fasting, Islam
- Abstract
This study aimed to evaluate the effect of diurnal Ramadan fasting on cardiometabolic risk factors (blood glucose, lipid profile, inflammatory cytokines) and sleep quality in healthy Turkish adults. This prospective observational study was conducted with a total of 32 individuals (12 males, 20 females) who were aged between 19-32 years and fasted for 25 or more continuous days in Ankara, Turkey between 1 Ramadan 1442 and 30 Ramadan 1442. Individuals applied fasting for 16 hours in the spring season. Blood samples were taken after at least 8 hours of fasting, anthropometric measurements were taken and sleep quality was assessed using The Pittsburgh Sleep Quality Index (PSQI) at the beginning and the end of Ramadan. There was a significant decrease in body mass index (BMI), C-reactive protein (CRP), and tumor necrosis factor-alpha (TNF-α) levels during Ramadan fasting (p < .005). There were no changes in lipid profiles and sleep quality. There was a significant increase in fasting blood glucose levels (p < .05); however, this change is within normal limits. There was also a significant relationship between BMI and CRP, IL-6, and TNF-α levels (p < .05). The diurnal Ramadan fasting did not affect lipid profiles and sleep quality in healthy Turkish subjects. However, decreased BMI and inflammatory cytokine levels were observed at the end of Ramadan fasting. More studies are needed to clarify the role of Ramadan fasting in healthy populations.
- Published
- 2022
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43. Validity and Reliability of the Turkish Version of the Sustainable and Healthy Eating Behaviors Scale.
- Author
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Köksal E, Bilici S, Çitar Daziroğlu ME, and Erdoğan Gövez N
- Abstract
This study was conducted to determine the validity and reliability of the Turkish version of the Sustainable and Healthy Eating (SHE) Behaviors Scale. The original scale included 8 factors and 34 items related to the SHE behaviors of adults. The research was carried out in three stages with a total of 586 participants aged 19 to 50 years. The Cronbach alpha coefficient was used to evaluate internal consistency reliability and the test-retest method was applied. Exploratory factor analysis (EFA) was performed to determine the factor structure. The model obtained with EFA was evaluated with confirmatory factor analysis (CFA). The Cronbach alpha coefficient of the scale was found to be excellent at 0.912, and the intra-class correlation coefficient was found to be good at 0.832 using the test-retest method. Considering the suitability of the data for factor analysis, the KMO coefficient was 0.859, and the significance level of the Bartlett test of sphericity was less than 0.05 (χ
2 =3.803,25; p<0.05). As a result of EFA, the items of the scale were found to be distributed in 7 factor dimensions. The factor loadings of the items were between 0.516 and 0.890, and the factors explained 67% of the variance. Considering the fit indices obtained as a result of the analysis of this model with CFA, it was seen that the model had an acceptable fit (χ2 /sd=2.593, CFI=0.915, Tucker-Lewis index=0.902, SRMR=0.0754, and RMSEA=0.067). In conclusion, the Turkish version of the SHE Behaviors Scale has credible reliability and construct validity to assess the sustainable and healthy eating behaviors of the Turkish adult population.- Published
- 2022
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44. Nutritional Targets in Cow's Milk Protein Allergy: A Comprehensive Review.
- Author
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Çelik MN and Köksal E
- Subjects
- Animals, Calcium, Cattle, Diet, Female, Humans, Milk Proteins, Mothers, Milk Hypersensitivity diagnosis, Milk Hypersensitivity etiology, Milk Hypersensitivity therapy
- Abstract
Purpose of Review: Cow's milk protein allergy (CMPA) is known as the most common food allergy in the first year of life. For this purpose, in our review, the regulation of maternal and infant nutrition, and the risks and the issues to be considered in terms of nutrition are discussed from the perspective of a dietitian., Recent Findings: Therefore, understanding the epidemiology, symptoms, diagnostic criteria, and appropriate treatment of cow's milk protein allergy is crucial for the multidisciplinary team of physicians, dietitians, and nurses working in the clinic. It has been reported that tolerance develops in approximately 50% of infants affected by cow's milk protein in the first year of life. Although CMPA is generally thought to clear up between 1 and 2 years of age, there is insufficient evidence to determine an optimal time to reintroduce cow's milk protein to the diet. Because the elimination diet recommended in the treatment of children with CMPA, adequate protein and calcium intake of the mother and/or baby in the diet should be evaluated. Studies focusing on metabolic bone turnover in children with food allergies are limited. In general, low calcium intake is associated with reduced bone formation in children with CMPA. Therefore, bone health should be focused on and appropriate strategies should be developed in children with CMPA. Unnecessary elimination of milk and its products, which are an important part of nutrition, should be prevented and nutrient deficiencies and growth status should be monitored by dietitians especially working in the field of pediatric nutrition., (© 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
- Published
- 2022
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45. Decolorization of water through removal of methylene blue and malachite green on biodegradable magnetic Bauhinia variagata fruits.
- Author
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Bayram O, Köksal E, Göde F, and Pehlivan E
- Subjects
- Adsorption, Biodegradation, Environmental, Fruit, Hydrogen-Ion Concentration, Kinetics, Magnetic Phenomena, Methylene Blue, Rosaniline Dyes, Thermodynamics, Water, Bauhinia, Water Pollutants, Chemical
- Abstract
Batch sorption experiments were performed to investigate the potential of Bauhinia variagata fruit (BVf) and nano-magnetic Bauhinia variagata fruit (nM-BVf) to remove methylene blue (MB) and malachite green (MG). Equilibrium studies have been carried out using various experimental parameters such as the amount of biosorbent, initial solution concentration, contact time, pH, and temperature. The Langmuir, Freundlich, Scatchard, D-R and Temkin adsorption models were applied for the experimental information of MB and MG. The Freundlich model fits better than the Langmuir model. Freundlich model confirmed the magnificent dye sorption ability; 19.3 mg/g for BVf/MB, 21.2 mg/g for nM-BVf/MB, 19.7 mg/g for BVf/MG, and 30.1 mg/g for nM-BVf/MG. The pseudo-second-order kinetic model displayed a more suitable behavior to the experimental result for the removal of MG and MB. Thermodynamic parameters such as changes in Gibbs free energy (Δ G
o ), enthalpy (Δ Ho ), and entropy (Δ So ) were investigated and the fine details in the adsorption system were completed. The conclusion from this study is that the prepared nano biosorbent can be efficient for the removal of cationic dyes from wastewater.- Published
- 2022
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46. Phytochemicals Analysis and Some Bioactive Properties of Erica manipuliflora Salisb. (EMS); Antibacterial, Antiradical and Anti-lipid Peroxidation.
- Author
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Yüksel AK, Dikici E, Yüksel M, Işik M, Tozoğlu F, and Köksal E
- Abstract
In the present study, the phenolic content by using LC MS/MS method, anticholinergic, antioxidant (metal reduction, radical and removal of lipid peroxidation), and antibacterial activities of Erica manipuliflora Salisb. (EMS) extract were determined. The amount of vanillic acid, fumaric acid, catechin hydrate, quercetin, and phloridzin dihydrate were found higher than other compounds. The ethanol extract of the EMS showed an inhibition effect on the Acetylcholinesterase (AChE) enzyme with IC
50 value of 0.124 ± 0.008 mg mL-1 . Also, this extract of the EMS indicated radical (DPPH and ABTS) scavenging activity (about 20%) and the reducing capacity for Cu(II) and Fe(III) close to trolox, and inhibited the oxidation of linoleic acid with 40.5% at 20 μg mL-1 . Antibacterial activity of the extracts was investigated against Staphylococcus aureus, Escherichia coli , and Salmonella Typhimurium using agar disc diffusion and minimum inhibitory concentration (MIC) methods. The EMS extract was found to be effective when used at least 312 mg mL-1 concentration on the pathogenic microorganisms. Consequently, it has an important non-synthetic natural content that can be used in the treatment of many diseases due to its many bioactivities such as anticholinergic, antioxidant (radical removal, lipid peroxidation prevention, etc.) and antibacterial.- Published
- 2021
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47. Turkish version of the 'Three-Factor Eating Questionnaire-51' for obese individuals: a validity and reliability study.
- Author
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Küçükerdönmez Ö, Akder RN, Seçkiner S, Oksel E, Akpınar Ş, and Köksal E
- Subjects
- Adult, Humans, Psychometrics, Reproducibility of Results, Surveys and Questionnaires, Turkey, Obesity
- Abstract
Objectives: Obesity is a serious public health issue. Investigating the eating behaviour of individuals plays an important role in preventing obesity. Therefore, the purpose of the current study is to adapt the long and first version of the 'Three-Factor Eating Questionnaire' (TFEQ), a scale that examines the eating behaviour of individuals, to Turkish culture and to carry out its validity and reliability study., Design: The data were collected using data collection forms, and anthropometric measurements of the individuals were made by the researchers. The data collection form included several parameters: socio-demographic characteristics, the TFEQ scale, whose validity and reliability analysis is conducted here, and the Dutch Eating Behaviour Questionnaire (DEBQ) which was used as a parallel form., Setting: The Obesity Clinic at Ege University in Izmir., Participants: The study group consisted of obese adult individuals (n 257)., Results: It was seen that constructing the questionnaire with twenty-seven items and four sub-dimensions provides better information about Turkish obese individuals. Factor loadings ranged from 0·421 to 0·846, and item total score correlations ranged from 0·214 to 0·558. Cronbach's α coefficient was found to be 0·639 for the whole scale. A positive, strong and statistically significant correlation was detected between TFEQ and DEBQ, which was used as a parallel form (r = 0·519, P < 0·001)., Conclusion: In Turkey, the long version of the TFEQ scale was found valid and reliable for obese adult individuals. TFEQ can be used by clinicians or researchers to study the eating behaviour of obese individuals.
- Published
- 2021
- Full Text
- View/download PDF
48. In vitro Antioxidant and Cytotoxic Activities of Extracts of Endemic Tanacetum erzincanense Together with Phenolic Content by LC-ESI-QTOF-MS.
- Author
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Yapıcı İ, Altay A, Öztürk Sarıkaya B, Korkmaz M, Atila A, Gülçin İ, and Köksal E
- Subjects
- Antineoplastic Agents, Phytogenic chemistry, Antineoplastic Agents, Phytogenic isolation & purification, Antioxidants chemistry, Antioxidants isolation & purification, Cell Proliferation drug effects, Chromatography, Liquid, Dose-Response Relationship, Drug, Drug Screening Assays, Antitumor, Humans, Spectrometry, Mass, Electrospray Ionization, Structure-Activity Relationship, Tumor Cells, Cultured, Antineoplastic Agents, Phytogenic pharmacology, Antioxidants pharmacology, Phenols chemistry, Tanacetum chemistry
- Abstract
In this study, phenolic composition, and in vitro biological activities of ethyl acetate (EAE) and methanol (ME) extracts obtained from the aerial parts of endemic Tanacetum erzincanense were investigated. Total phenolic and flavonoid content of the extracts were determined by Folin-Ciocalteu and aluminum chloride colorimetric methods, respectively. Antioxidant capacity of the extracts was evaluated over radical scavenging (DPPH and ABTS) and metal ion reducing power (FRAP and CUPRAC) tests. Individual phenolic compounds in ME was analyzed by high-performance liquid chromatography coupled to electrospray ionization quadrupole time-of-flight mass spectrometry (LC-ESI-QTOF/MS). Cell inhibitory potential of the extracts was tested against colorectal adenocarcinoma (HT-29), breast adenocarcinoma (MCF-7), and hepatocarcinoma (HepG2) cells by 2,3-bis(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide (XTT) assay. The results showed that ME contains higher TPC (64.4 mg GAE/g) and TFC (62.2 mg QE/g) than those of EAE (41.5 mg GAE/g and 40.0 mg QE/g). LC-ESI-QTOF/MS analysis revealed that ME is rich in phenolic compounds, namely, chlorogenic acid, apigenin, quercetin, luteolin, and diosmetin. Antioxidant assay results indicated that ME possess stronger activity than EAE and a power that competes with synthetic antioxidants. XTT assay results demonstrated that although both extracts displayed a considerable cytotoxicity against the tested cancer cell lines in a time and dose-dependent manner, ME expressed its selective inhibitory action towards MCF-7 cells with an IC
50 value of 20.4 μg/mL for 72 h. These results may serve as a basis for further in vivo studies to examine the potential applications of T. erzincanense in food and pharmaceutical industries., (© 2021 Wiley-VHCA AG, Zurich, Switzerland.)- Published
- 2021
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49. Increased Obesity Awareness and Adherence to Healthy Lifestyle-Diet Reduce Metabolic Syndrome Risk in Overweight Children.
- Author
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Bozbulut R, Ertaş-Öztürk Y, Döğer E, Bideci A, and Köksal E
- Subjects
- Adolescent, Anthropometry, Child, Female, Health Knowledge, Attitudes, Practice, Humans, Logistic Models, Male, Metabolic Syndrome etiology, Pediatric Obesity complications, Risk Reduction Behavior, Turkey, Diet, Healthy psychology, Healthy Lifestyle, Metabolic Syndrome prevention & control, Patient Compliance, Pediatric Obesity psychology
- Abstract
Objective: Obesity is a common epidemic issue in all over the world. In order to prevent obesity it is essential to know about obesity and its detrimental consequences. This study aimed to evaluate children's awareness about obesity and to determine the associations between level of awareness, healthy lifestyle, dietary habits and risk factors for metabolic syndrome. Methods: Two hundred and thirty-six overweight children (119 boys and 117 girls) aged 10-14 years were enrolled to the study. Anthropometric and biochemical measurements were taken and metabolic syndrome (MetS) definition were done according to the International Diabetes Federation (IDF) consensus and divided into two groups as MetS (+) and MetS (-). Obesity awareness scale (OBA) and Adapted Healthy Lifestyle-Diet Index for Turkey (HLD-TR) were performed. Results: Among children, the prevalence of having MetS was found as 26.3%. Obesity awareness and HLD-TR index sores were lower in MetS (+) group than MetS (-) group. Metabolic syndrome related biochemical parameters and anthropometric measurements were associated with obesity awareness level of the children. The binary logistic regression model shows that a one-unit increase in the OBA index score increases the odd of not having MetS for 1.12 times after adjustments for age, gender, body mass index, and HLD-TR index score. Conclusions: Increased awareness about obesity among children will help to reduce the risk of metabolic syndrome, type 2 diabetes and atherosclerotic cardiovascular diseases in the future.
- Published
- 2020
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50. Phytochemical Content, Antidiabetic, Anticholinergic, and Antioxidant Activities of Endemic Lecokia cretica Extracts.
- Author
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Aras A, Bursal E, Türkan F, Tohma H, Kılıç Ö, Gülçin İ, and Köksal E
- Subjects
- Acetylcholinesterase metabolism, Antioxidants chemistry, Antioxidants isolation & purification, Apiaceae chemistry, Butyrylcholinesterase metabolism, Cholinergic Antagonists chemistry, Cholinergic Antagonists isolation & purification, Cholinesterase Inhibitors chemistry, Cholinesterase Inhibitors isolation & purification, Cholinesterase Inhibitors pharmacology, Dose-Response Relationship, Drug, Glycoside Hydrolase Inhibitors chemistry, Glycoside Hydrolase Inhibitors isolation & purification, Glycoside Hydrolase Inhibitors pharmacology, Glycoside Hydrolases metabolism, Hypoglycemic Agents chemistry, Hypoglycemic Agents isolation & purification, Phenols chemistry, Phenols isolation & purification, Phytochemicals chemistry, Phytochemicals isolation & purification, Plant Extracts chemistry, Plant Extracts isolation & purification, Structure-Activity Relationship, Antioxidants pharmacology, Cholinergic Antagonists pharmacology, Hypoglycemic Agents pharmacology, Phenols pharmacology, Phytochemicals pharmacology, Plant Extracts pharmacology
- Abstract
The aim of this work was to investigate the enzyme inhibition, antioxidant activity, and phenolic compounds of Lecokia cretica (Lam.) DC. Acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and α-glycosidase enzymes were strongly inhibited by the L. cretica extracts. IC
50 values for the three enzymes were found as 3.21 mg/mL, 2.1 mg/mL, and 2.07 mg/mL, respectively. Antioxidant activities were examined in both aqueous and ethanol (EtOH) extracts using CUPRAC, FRAP, and DPPH method. Also, the phenolic compounds of the endemic plant were identified and quantified by using HPLC/MS/MS. According to the results, the extracts have remarkable antioxidant activities. The most abundant phenolic acids of L. cretica in EtOH extract were determined as quinic acid (12.76 mg/kg of crude extract), chlorogenic acid (3.39 mg/kg), and malic acid (2.38 mg/kg)., (© 2019 Wiley-VHCA AG, Zurich, Switzerland.)- Published
- 2019
- Full Text
- View/download PDF
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