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 Relationship Between Coronaphobia, Cognitive Functions, Sleep Quality, and Diet Quality in Older Adults During Covid-19(Galenos Publ House, 2024) Balci, Leyla Atas; Polat, Selda; Coskunsu, Dilber Karagoezoglu; Altuncevahir, Ilayda; Koc, Bilge Meral; Ozkul, EcenurObjective: The relationship between the quality of diet and sleep, cognitive function, and fear related to coronavirus disease-2019 (COVID-19) among older adults in Turkey during the pandemic remains unclear. This study aimed to investigate the correlation between diet quality, cognitive function, sleep quality, and levels of coronaphobia in individuals aged 65 and above, to understand the impact of COVID-19. Materials and Methods: Sleep quality, diet quality, coronaphobia, and cognitive status of 72 older individuals were evaluated using the Pittsburgh sleep quality index, healthy eating index 2010, Montreal cognitive assessment scale, and coronavirus-19 phobia scale, respectively. Results: The participants had poor diet quality (54.2%), poor sleep quality (62.5%), obesity (41.7%), higher levels of coronaphobia, and cognitive impairment. There was a moderate negative relationship between sleep quality and coronaphobia and between cognitive status and coronaphobia (p <= 0.00); and a weak positive relationship between diet quality and cognitive status (p<0.05). However, no relationship was found between sleep quality and diet quality, and between coronaphobia and diet quality (p>0.05). Conclusion: Our study highlights the significant challenges faced by older adults during the COVID-19 pandemic, including poor nutrition quality, sleep disturbances, coronaphobia, and cognitive impairment. Our findings suggest a potential interplay between nutrition quality, sleep patterns, and cognitive function among older adults, with those experiencing coronaphobia exhibiting additional cognitive and sleep-related concerns. We advocate the implementation of targeted interventions aimed at mitigating cognitive impairment, addressing nutritional deficiencies, and improving sleep quality among older adults, irrespective of COVID-19 infection status, to enhance overall well-being during these challenging times.Article Evaluation of Growth in Children Aged One- Two Years: a Cross- Sectional Study(Istanbul Univ, 2022) Guldemir, Hilal Hizli; Simsek, Tugce; Garipagaoglu, MuazzezObjective: The study was conducted to evaluate growth in children aged 1-2 years. Methods: In this study conducted with 302 children and their mothers, data on children and their families were obtained using a questionnaire. Z-scores were determined by measuring the weight and height of the children, and these were compared with percentile curves developed for Turkish children. Energy and macronutrient consumption were determined by taking a daily food consumption record for each child. Results: The average age, birth weight and height of children were 18.6 +/- 3.2 months, 3.2 +/- 0.5 kg and 50.0 +/- 2.3 cm, respectively. Their current weight and height were determined as 11.4 +/- 1.6 kg and 80.6 +/- 6.5 cm. It was observed that 85.6% of the children had normal body weight, 69.5% normal BMI and 56.2% normal height z score. It has been determined that body weight and height z-scores are higher in girls compared to boys (22.1%, 32.6% and 24.7% respectively in + 2SD). Body weights of children with high monthly income were also found to be significantly higher (15.6% in + 2SD, p=0.038). Conclusions: It has been concluded that the standards, gender and the economic status of the family in this age period are effective on childrens' growth.Article Investigation of the Synergic Effect of the Colistin/Sulbactam Combination in Carbapenem-Resistant <i>acinetobacter Baumannii</I> Complex Strains With Time-Kill and Checkerboard Methods(Bilimsel Tip Yayinevi, 2021) Kilbas, Imdat; Hatipoglu, Huseyin; Kilic, Umit; Kahraman Kilbas, Elmas Pinar; Koroglu, Mehmet; Altindis, Mustafa; Kılbaş, Elmas Pınar KahramanIntroduction: Infections caused by carbapenem-resistant Acinetobacter strains have become very common in recent years, and the most frequently used medicinal treatment is colistin. Combination treatments should also be applied to prevent development of resistance to colistin. This study examines the in vitro synergic effect of the colistin/sulbactam combination in carbapenem-resistant Acinetobacter strains with the time-kill and checkerboard methods. Materials and Methods: Twenty carbapenem-resistant Acinetobacter baumannii-calcoaceticus complex strains, which were isolated from various clinical samples, were included in this study. Strains were identified with mass spectrometry, and antibiotic sensitivity results were determined with the VITEK 2 (R) system. The in vitro effect and synergic activity of the colistin, sulbactam, and colistin/sulbactam combination on the carbapenem-resistant strains were determined using the time-kill and checkerboard methods. Seventeen strains were examined with the time-kill method, and twenty strains were examined using the checkerboard method. The fractional inhibitory concentration index of strains was calculated for detection of synergic effect. Results: Using the time-kill method applied on the colistin/sulbactam combination showed that the combination had a synergic effect on all 17 strains, while sulbactam alone did not have a bactericidal effect in the studied concentrations. When applying the checkerboard method, it was determined that the colistin/sulbactam combination had a synergic effect on 17 of the strains (85%) and an additive effect on 3 strains (15%), sulbactam had a low effect alone (15%), and colistin was effective on all strains. Conclusion: Study results indicated that the colistin/sulbactam combination had a high level of synergic effect on all studied strains using both methods.