WoS İndeksli Yayınlar Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.14627/6
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Article Citation - WoS: 2Analysis of Selected Steroid Hormones in Sea of Marmara Sediment Samples by Lc-esi/Ms-ms(Istanbul Univ, Fac Pharmacy, 2023) Aysel, Esra; Yurdun, TurkanBackground and Aims: Sediment is the general name given to the muddy structure located at the bottom of aquatic environments such as the sea. In our study, the amounts of steroid hormones were investigated in the sediment samples taken from the Marmara Sea. According to other studies, it has been determined that the excess of the hormone load in the sediments may be an indicator of human/animal sourced pollution, as well as the negative effects of the hormones mixed in the seas with the ecological cycle on the health of humans and animals.Methods: In our study, 31 selected human/animal, plant, natural and synthetic hormone-steroids were studied using Liquid Chromatography Electrospray Ionization Tandem Mass Spectrometry (LC-ESI/MS-MS). Methanol and QuEChERS were used as extraction methods. Sediment samples were taken from a total of 27 points selected for sampling at the Marmara Sea.Results: According to the results we found, the androgens: androsterone (24.50-1718.18 ng g-1), testosterone (86.30-1600.32 ng g-1); the estrogens: mestranol (33.73-228.32 ng g-1), equilin (53.44-1232.53 ng g-1); the progestagens; pregnenolone (37.50374.76 ng g-1), progesterone (39.96-405.60 ng g-1); levonorgestrel (325.25 and 937.93 ng g-1); the fecal sterols: cholestanone (57.57-1726.32 ng g-1), coprostanol + epicoprostanol (51.43-1370.33 ng g-1); and the plant sterol; campesterol (35.30-1859.90 ng g-1) were the compounds detected.Conclusion: Estrogens and progestogens are active components of birth control pills, and cholestanone and coprostanol + epicoprostanol are steroids that are indicative of human/animal pollution. Coprostanol + epicoprostanol and cholestanone, which are indicators of fecal pollution, were detected in all sediment samples. In our study, steroid hormones were detected for the first time in Sea of Marmara sediments and possible environmental risks were evaluated.Article Determining the Type 2 Diabetes Risks and Healthy Lifestyle Behaviors of First Year University Students(Dokuz Eylul Univ inst Health Sciences, 2022) Eroglu, Nermin; Temiz, GamzeIntroduction: The present study was planned and carried out as a descriptive and cross-sectional study for determining the Type 2 diabetes risks and healthy lifestyle behaviors of first year university students. Material and Methods: The study was carried with 185 students at a foundation university in Istanbul during the dates of November-December 2019. The data were acquired online via Student Information Form, Type 2 Diabetes Questionnaire (FINDRISK) and Healthy Lifestyle Behaviors Scale. Results: The mean age of the students in the study was 19.79 +/- 2.47 years, 53.5 % (n=99) were male, 29.7 % (n=55 previously graduated from another university, 62.1 % (n=115) were students and it was determined that 50.3 % (n=93) had diabetic relatives. It was observed when the diabetes risk status was examined for all participants that they are in the low risk group due to a FINDRISK total score of <7. Conclusion: The study results emphasize the importance of determining the risk for university students to be diabetic in the next decade, putting forth the individuals with high risk and moving onto the next stage for diagnosis. In addition, it has been determined that the level of knowledge of students may have a positive impact on their healthy lifestyle behaviors.Article The Effects of Chard Extract Against Streptozotocin-Induced Erectile Dysfunction in Rats(Istanbul Univ, Fac Pharmacy, 2024) Aydin, Mustafa; Sacan, Ozlem; Kabasakal, Levent; Cetinel, Sule; Kadihasanoglu, Mustafa; Kendirci, Muammer; Sener, Goksel; Sönmez, Yeşim İpçi; Yanardag, RefıyeBackground and Aims: To analyze the potential therapeutic effects of chard against streptozotocin (STZ) -induced erectile dysfunction (ED) and oxidative damage in the corpus cavernousum in rats. Materials and Methods: In this study, Sprague-Dawley rats (250-300g) were allocated into groups as follows: control, diabetic, diabetic + chard, and diabetic + insulin. In order to induce diabetes, rats were given 65 mg/kg intraperitoneal streptozotocin. Chard extract was given orally at a dose 2 g/kg for 45 days beginning on 15 th days. Sixty days after STZ injection, intracavernosal pressure (ICP) was measured and rats were decapitated. Blood samples were obtained for glucose, asymmetric dimethylarginine (ADMA)levels, and lactate dehydrogenase (LDH) activity while cavernous tissues were taken to analyze luminol and lucigenin chemiluminescence (CL), malondialdehyde and glutathione and along with histological analysis. Results: The results revealed that diabetes caused significant decreases in cavernosal tissue glutathione levels, while luminol and lucigenin CL, and malondialdehyde levels were significantly elevated. Plasma glucose, ADMA levels, and LDH activity were also found to be increased in diabetic group. On the other hand, both chard extract and insulin treatment reversed these biochemical parameters significantly. Furthermore, it was found that the ICP value examined for evaluating erectile functions were lower in the diabetic group, but increased in both treatment groups which were similar to the control values. Conclusion: According to our results, chard extract, similar to insulin, reduced diabetes -induced oxidative damage in cavernosal tissue and protected erectile functions. This effects may be attributed its hypoglycemic and antioxidant properties.