Sağlık Bilimleri Enstitüsü / Health Science Institute
Permanent URI for this collectionhttps://hdl.handle.net/11727/1393
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Item The correlation between serum vitamin d and oocyte quality, potential of fertilization and embryo development in the assisted reproductive technology (art) cases(Başkent Üniversitesi Sağlık Bilimleri Enstitüsü, 2022) Ben Zair, Asma Bashir; Dolu, NazanThere is increasing interest in vitamin D research as a result of the increased incidence of vitamin D insufficiency. Vitamin D deficiency has been associated with a number of acute and chronic disorders. There is increasing evidence that 25-hydroxy[25(OH)] vitamin D has important effects on a variety of systems, including the human reproductive system. Vitamin D can help regulate the menstrual cycle, endometrial proliferation, follicular development, relief of early dysmenorrhea, and decrease vaginal fibroid. Studies show that women with high levels of vitamin D in their blood are more likely to conceive. The aim of this study is to show whether there is a relationship between 25 (OH) vitamin D blood levels and oocyte quality, in vitro division success and embryo quality in IVF patients. Individuals who underwent IVF treatment at a health center in Misurata, Libya between January 2018 and December 2020 were retrospectively analyzed. Luteinizing Hormone (LH) levels of the patients were recorded before and after the treatment. All patients in the study were administered vitamin D at a dose of 1,500 to 2,000 IU (3 sprays per day) for two months after treatment was started. A statistically significant difference was found in LH levels before and after treatment. However, no significant difference was observed between vitamin D supplementation and oocyte quality, in vitro division success and embryo quality. In this study, it was shown that vitamin D supplementation did not affect women in infertile marriages. Additional studies are needed to see in more detail whether vitamin D supplementation will help in vitro fertilization success.D vitamini yetersizliği insidansının artmasının bir sonucu olarak D vitamini araştırmalarına daha fazla ilgi duyulmaktadır. D vitamini yetersizliği, bir dizi akut ve kronik bozuklukla ilişkilendirilmiştir. 25-hidroksi [25(OH)] D vitamininin insan üreme sistemi de dahil olmak üzere çeşitli sistemlere önemli etkileri olduğuna dair kanıtlar artmaktadır. D vitamini, adet döngüsün düzenlenmesi, endometriyal proliferasyon, foliküler gelişim, erken dismenorenin rahatlaması ve vajinal fibroidin azalmasına yardımcı olabilir. Çalışmalar, kanında D vitamini düzeyi yüksek olan kadınların gebe kalma olasılığının daha yüksek olduğunu göstermektedir. Bu çalışmanın amacı, tüp bebek hastalarında 25 (OH) D vitamini kan seviyeleri ile oosit kalitesi, in vitro bölünme başarısı ve embriyo kalitesi arasında bir ilişki olup olmadığını göstermektir. Ocak 2018 ile Aralık 2020 tarihleri arasında Libya, Misurata'daki bir sağlık merkezinde tüp bebek tedavisi gören bireyler geriye dönük olarak incelendi. Hastaların tedavi öncesi ve sonrası Luteinizan Hormon (LH) seviyeleri kaydedildi. Çalışmaya katılan tüm hastalara tedaviye başlandıktan sonra, iki ay boyunca günde 1.500 ile 2.000 IU (günde 3 sprey) dozunda D vitamini uygulandı. Tedaviden önce ve sonra LH seviyelerinde istatistiksel olarak anlamlı farklılık bulundu. Ancak D vitamini takviyesi ile oosit kalitesi, in vitro bölünme başarısı ve embriyo kalitesi arasında anlamlı farklılık gözlenmedi. Bu çalışmada, D vitamini takviyesinin kısır evliliklerdeki kadınlar üzerindeki etkisinin olmadığı gösterilmiştir. D vitamini takviyesinin invitro fertilizasyon başarısına yardımcı olup olmayacağını daha ayrıntılı görmek için ek çalışmalara ihtiyaç bulunmaktadır.Item The effects of vitamin d and zinc on anxiety and exploratory behaviors in rats.(Başkent Üniversitesi Sağlık Bilimleri Enstitüsü, 2022) Baroud, Amna Abdulsalam; Dolu, NazanD vitamini lipofilik bir vitamindir Koronavirüs pandemisi sırasında birçok kişi virüse karşı bağışıklıklarını güçlendirmek için D Vitamini (D vit) ve çinko takviyeleri almaya başlamıştır. Ancak, D vit ve çinkonun anksiyete ve keşif davranışları üzerine etkilerini araştıran bir çalışmaya rastlanmamıştır. Bu çalışmada, sıçanlarda değişik dozlardaki D vit ve çinko takviyesinin, anksiyete ve keşif davranışı üzerindeki etkisinin açık alan testi ve yükseltilmiş artı labirent ile araştırılması amaçlamaktadır. Bu çalışmada 48 genç (8 haftalık) erkek Wistar sıçan eşit olarak dört gruba ayrıldı. 8 hafta boyunca günde bir kez olmak üzere Grup 1’e (sham grubu) normal su, Grup II'ye 400 IU/gün D vit, Grup III'e 1000IU/gün D vit gavajla verildi. Grup IV’e altı gün boyunca serum fizyolojik (ip) içinde çözülmüş olarak 30 mg/kg ZnSO4 verildi. 8 hafta sonra, D vit gruplarına altı gün boyunca ZnSO4 (30 mg/kg, serum fizyolojik içinde çözülmüş, ip) ve D vit (400 IU/gün ve 1000 IU/gün, ağızdan) birlikte verildi. Bu sürenin sonunda, sıçanlara açık alan testi (AAT) ve yükseltilmiş artı labirent testi (YAL) uygulandı. Açık alan testinde Grup 2 (p<0.013) ve Grup 3’ün (p<0.003) merkezi alana giriş sayısı (MAG) ve Grup 2 (p<0,039) ve Grup 3’ün (p<0,003) merkez alanda geçirilen süreleri (MAGS) Grup 1'den düşüktü. Grup 2 (p<0,000), Grup 3 (p<0,000) ve Grup 4’de (p<0,000) gerinme sayıları (GS) ve Grup 2 (p<0,000), Grup 3 (p<0,000) ve Grup 4 (p<0,004)’ün dışkılama sayıları (DS) Grup 1’den anlamlı olarak düşüktü. YAL'de Grup 2’nin kapalı alanda geçirilen süresi (KAGS) tüm gruplar arasında en yüksekti. KAGS değeri Grup 2'de Grup 1'e (p<0.01) ve Grup 4'e (p<0.01) göre istatistiksel olarak daha yüksek, açık alanda geçirilen süre (AAGS) değeri Grup 2'de Grup 1'e göre istatistiksel olarak daha düşüktü (p<0.04). Grup 1’in açık kola giriş sayısı (AKG), en yüksek bulundu. Grup 2 (p<0.01) ve Grup 3’ün (p<0.03) AKG değerleri Grup 1'den istatistiksel olarak daha düşüktü. AAT ve YAL sonuçlarımıza göre farklı dozlardaki D vit ile birlikte çinko verilen ratlarda anksiyojenik etkiler görüldü; ancak çinko tek başına uygulandığında anksiyeteyi etkilemedi.Farklı çinko dozlarının kaygı üzerindeki etkisini araştırmak için daha fazla çalışmaya ihtiyacımız bulunmaktadır. Vitamin D is a lipophilic vitamin. During the coronavirus pandemic, many people started taking Vitamin D (vit D) and zinc supplements to increase their immunity against the virus. However, there is no study investigating the effects of vitamin D and zinc on anxiety and exploratory behaviors. In this study, it is aimed to investigate the effect of different doses of vitamin D and zinc supplementation on anxiety and exploratory behavior in rats by open field test and elevated plus maze. In this study, 48 young (8 weeks old) male Wistar rats were equally divided into four groups. Normal water was given to Group 1 (sham group), 400 IU/day D vit to Group II, 1000 IU/day D vit to Group III, once a day for 8 weeks by gavage. 30 mg/kg ZnSO4 dissolved in physiological saline (ip) was administered to group IV for six days. After 8 weeks, vit D groups were given concomitant ZnSO4 (30 mg/kg, dissolved in saline, ip) and vit D (400 IU/day and 1000 IU/day, orally) for six days. At the end of this period, the rats underwent open field test (OFT) and elevated plus maze test (EPM). In the open field test, the number of entrances to the central area (NEC) of Group 2 (p<0.013) and Group 3 (p<0.003) and the time spent in the central area (STC) of Group 2 (p<0.039) and Group 3 (p<0.003) was lower than Group 1. The number of rearing (NR) values for Group 2 (p<0.000), Group 3 (p<0.000) and the number of defecation (ND) values of Group 2 (p<0.000), Group 3 (p<0.000) and Group 4 (p<0.004) were significantly lower than Group1. At EPM, Group 2 had the highest spent time in the closed area (STCA) value among all the groups. STCA value was statistically higher at Group 2 than Group 1 (p<0.01) and Group 4 (p<0.01), while spent time in the open area (STOA) value was statistically lower at Group 2 than Group 1 (p<0.04). Group 1 had the highest enter the open arm (EOA). EOA values for Group 2 (p<0.01) and Group 3 (p<0.03) were statistically lower than Group 1. According to our OFT and EPM results, anxiogenic effects were observed in rats given different doses of vitamin D and zinc; however, zinc did not affect anxiety when administered alone. We need more studies to investigate the effect of different doses of zinc on anxiety.Item Evaluation of electrodermal activity in diabetic rats treated with vildagliptin and metformin(Başkent Üniversitesi Sağlık Bİlimleri Enstitüsü, 2022) Muftah Shawesh, Muftah Mohamed; Yiğit, Ayşe ArzuElectrodermal activity (EDA) is the measurement of the electrical conductivity of skin, which indicates the activation of sympathetically innervated eccrine sweat glands. Thus, sympathetic system activity that innervates eccrine sweat glands. In our study, it was aimed to evaluate electrodermal activity and thus changes in sympathetic activity in diabetic rats treated with vildagliptin, metformin and metformin+vildagliptin combination. 50 male rats were used in this study. Rats were divided into control (n=10) and experimental groups (n=40). Forty animals in experimental group were injected with 45 mg/kg streptozotocin as a single dose intraperitoneally. After 3 days, animals whose blood glucose level exceeded 250 mg/dl were considered as diabetic. Rats were divided into 4 groups as diabetes, vildagliptin, metformin and metformin+vildagliptin. Vildagliptin (50 mg/kg), metformin (500 mg/kg) and 500 mg/kg metformin+50 mg/kg vildagliptin were administered by gavage for 15 days. After that blood glucose were be measured again end of the 15 days and seeing that diabetes continues, tonic activity was recorded before sound stimulus, and phasic skin conductivity level (SCR) was recorded in response to the auditory stimulus by using Biopac MP35 device. Differences between groups were determined by one-way Anova test. Tukey test was used to determine the significance between the groups. P<0.05 was considered significant. Both tonic SCL and phasic SCR were higher (p<0.001) in diabetic groups than the control group. These findings might explain the increase in the sympathetic activity in diabetic groups. In additiona, the blood glucose levels of the metformin and vildagliptin groups were lower than the diabetic group. Intrestingly, the metformin+vildagliptin group had a lower tonic SCL than the other experimental groups, whereas the metformin group had a less phasic SCR than the diabetes group (p <0.0001). Peak number of vildagliptin and metformin+vildagliptin groups decreased in tonic recording compared to diabetic group (p<0.0001, p<0.01 respectively). Our study, the fact that diabetic drugs caused a decrease in SCL indicates that these drugs may reduce eccrine sweat gland and sympathetic activity affecting these sweat glands. Further studies are needed on whether a decrease in sympathetic activity will have a positive effect on diabetes. Elektrodermal aktivite (EDA), sempatik sinir sistemi ile innerve olan ekrin ter bezlerinin aktivitesini yansıtan derinin elektriksel iletkenliğinin ölçümüdür. Çalışmamızda, metformin, vildagliptin ve metformin+vildagliptin kombinasyonu uygulanan diyabetik sıçanlarda elektrodermal aktivitenin, dolayısıyla sempatik aktivitedeki değişikliklerin değerlendirilmesi amaçlandı. Çalışmada 50 adet erkek Wistar sıçan kullanıldı. Sıçanlar 10’u kontrol, 40’ı deney grubu olacak şekilde ayrıldı. Deney grubundaki 40 hayvanda 45 mg/kg ip streptozotosin (STZ) uygulamasından sonra kan glikoz düzeyi 250 mg/dl’ yi geçen hayvanlar diyabetli olarak kabul edildi. Sıçanlara 15 gün boyunca gavaj ile çeşme suyu, 500 mg/kg metformin, 50 mg/kg vildagliptin, ve 500 mg/kg metformin+50 mg/kg vildagliptin verilerek diyabetik kontrol (n=10) ve deney grupları (3 grup, n=10) oluşturuldu. 15 gün sonunda kan glikozluri tekrar ölçüldükten ve diyabetin devam ettiği görüldükten sonra Biopac MP35 cihazı kullanılarak, ses uyarısı verilmeden önce dinlenim durumundaki tonik, işitsel uyarıdan sonra gelişen cevap fazik deri iletkenlik seviyesi (DİS) olarak kaydedildi. Gruplar arasındaki farklılıklar one-way Anova testi ve Posthoc Tukey testi ile belirlendi. P<0.05 anlamlı olarak kabul edildi. Hem tonik hem de fazik DİS diyabetli gruplarda arttı (p<0.001) ki bu diyabetli gruplarda sempatik aktivitenin arttığını gösterebilir. Metformin ve vildagliptin verilen gruplarda kan şekeri diyabetli gruba göre daha düşüktü. Tonik DİS, metformin+vildagliptin grubunda diğer deney gruplarına göre, fazik DİS ise metformin grubunda diyabetik gruba göre azaldı (p<0.0001). Vildagliptin ile metformin+vildagliptin gruplarının pik sayısı da tonik kayıtta diyabetik gruba göre azaldı (sırasıyla p<0.0001 ve p<0.05). Çalışmamızda, metforminin, ve metformin vildagliptin kombinasyonlarının fazik DİS de azalma oluşturması, bu ilaçların ekrin ter bezi ve bu ter bezlerine etkiyen sempatik aktiviteyi azalttığını gösterebilir. Sempatik aktivitede azalmanın diyabette olumlu etki oluşturup oluşturmayacağı ile ilgili daha ileri çalışmalara ihtiyaç bulunmaktadırItem Validity and Reliability Testing Study of the Turkish Version of the Misophonia Scale(2022) Sakarya, Merve Deniz; Cakmak, EdaMisophonia is a disorder where individuals experience decreased tolerance to certain sounds that trigger intense emotional or physiological responses in them. People with misophonia can feel disgust, anger, anxiety, and they may experience anger outbursts when exposed to certain sounds that are insignificant to other people, such as chewing, lip-smacking, and breathing. There is no consensus on the prevalence, assessment, and management of misophonia. A major barrier to the research on misophonia is the lack of robust psychometric assessment tools. This study aims to meet the need for a measurement tool for clinical and population-based evaluations intended for misophonia by adapting the Misophonia Questionnaire (Wu et al., 2014) to Turkish. The research was carried out on 638 undergraduate students at Baskent University, from 18 to 26 years of age. Exploratory factor analysis was conducted on 420 participants (73% female, 27% male) and confirmatory factor analysis was conducted on 218 participants (62% female, 38% male). The statistical reliability was evaluated using the internal consistency coefficient, split half, and test-retest methods. In the Misophonia Questionnaire, misophonia was explained by the following three subscale factors: misophonia symptoms, misophonia emotions and behaviors-avoidance and internalization, and misophonia emotions and behaviors-aggression and externalization. These were used in the exploratory factor analysis. The confirmatory factor analysis found that the fit indexes were within acceptable limits. With the discriminant validity, the participants with clinical misophonia were observed to have a higher mean in all factors than those without. The internal consistency coefficient of the scale was calculated at .89, and for the three subscale factors mentioned earlier were .79, .85, and .83, respectively. The calculated test-retest reliability coefficient was .78, which applied to 75 participants. The split-half reliability coefficient was .83 (for each subscale factor, was .86, .87, and .81, respectively). With this study, the Misophonia Questionnaire, which can be used to evaluate misophonia in the general population, was adapted into Turkish. From the psychometric analysis, data supporting the validity and reliability of the Misophonia Scale were obtained.Item Effects of Non-Pharmaceutical Interventions Against COVID-19: A Cross-Country Analysis(2021) Gokmen, Yunus; Baskici, Cigdem; Ercil, Yavuz; 0000-0003-0712-1481; 33819370Prolonging non-pharmaceutical interventions (NPIs) used in the control of pandemics can cause a devastating effect on the overall economic and social welfare levels. Therefore, policymakers are facing a difficult duty in terms of implementing economically and socially sustainable and acceptable measures. The aim of this study is to investigate the effectiveness of NPIs implemented to control the COVID-19 pandemic. To this end, eight NPI measures were analysed, and their effects on the number of cases were investigated for France, Spain, China, and South Korea. In the study, the treatment effect of these mechanisms on the daily increase rate of the total number of cases during a certain period was analysed by using logarithmic linear regression with a dummy variables model. The findings indicate that the measures are effective against the spread of the pandemic at different levels. The findings also suggest that the most effective measure in decreasing the number of cases is workplace closure. An analysis comparing the effectiveness of countrywide measures and regional measures shows that school closing is the most effective measure to decrease the number of cases when implemented countrywide as opposed to regional implementation.Item Disease Characteristics of Psoriatic Arthritis Patients May Differ According to Age at Psoriasis Onset: Cross-Sectional Data from the Psoriatic Arthritis-International Database(2021) Bilgin, E.; Aydin, S. Z.; Tinazzi, I.; Bayindir, O.; Kimyon, G.; Ozisler, C.; Dogru, A.; Dalkilic, E.; Aksu, K.; Cetin, G. Yildirim; Yilmaz, S.; Solmaz, D.; Omma, A.; Can, M.; Kucuksahin, O.; Yavuz, S.; Ersozlu, E.D.; Kilic, L.; Tarhan, E.F.; Tufan, M.A.; Akyol, L.; Cinar, M.; Erden, A.; Gonullu, E.; Yildiz, F.; Bakirci, S.; Erbasan, F.; Esmen, S.Ergulu; Kucuk, A.; Tufan, A.; Balkarali, A.; Mercan, R.; Erten, S.; Akar, S.; Kasifoglu, T.; Duruoz, T.; Yazisiz, V.; Kalyoncu, U.; 32662407Objective To explore the impact of early versus late-onset psoriasis (PsO) on the disease characteristics of psoriatic arthritis (PsA) in a large-multicentre cohort. Methods The data from a multicentre psoriatic arthritis database was analysed. Patients were grouped according to age at psoriasis onset (early onset; 40 years of age, late-onset; 40 years of age) and disease characteristics of the groups were compared by adjusting for BMI and PsA duration, where necessary. Results At the time of analyses, 1634 patients were recruited [62.8% females; early onset 1108 (67.8%); late-onset, 526 (32.2%)]. The late-onset group was more over-weight [66.8% vs. 86.8%, p<0.001; adjusted for age -aOR 1.55 (1.11-2.20; 95% CI)]. The early onset group had more scalp psoriasis at onset (56.7% vs. 43.0%, p<0.001), whereas extremity lesions were more common in the late-onset group (63.8% vs. 74.2%, p<0.001). Axial disease in males and psoriatic disease family history in females were significantly higher in the early onset group [38.0% vs. 25.4%; p=0.005; adjusted for PsA duration -aOR 1.76 (1.19-2.62; 95% CI) / 39.5% vs. 30.1%; p=0.003; OR 1.51 (1.15-1.99; 95% CI), respectively]. Psoriatic disease activity parameters, patient-physician reported outcomes and HAQ-DI scores were similar in both groups. Conclusion Clinical features of PsA may be affected by the age at onset of PsO. Different genetic backgrounds in early and late-onset PsO may be driving the differences in psoriasis and PsA phenotypes.Item The effects of high doses vitamin d on anxiety and exploratory activity behaviours in rats(Başkent Üniversitesi Sağlık Bilimleri Enstitüsü, 2021) Eddn Asmaeil, Zahour Gamal; Dolu, NazanVitamin D is a fat-soluble vitamin produced in the skin in reaction to exposure to sunshine. It is necessary for a variety of processes, including calcium and phosphate homeostasis, as well as neuromuscular and immunological function. Not many studies have been conducted to examine the relationship between anxiety, exploratory behaviour, and different doses of vitamin D. The current study aimed to evaluate the impact of different doses of vitamin D on anxiety-related behaviours in rats using the elevated plus-maze method and on exploratory behaviour and general activity of rats by using the open field test. In this study, 8 weeks old age 36 young male Wistar rats were used. They were divided into 3 groups as sham group and two different doses of vitamin D groups. They were fed with feed containing 300 IU Vit D ad libitum. Sham group (Group 1) took normal water by gavage (n=12). The vitamin D group (Group 2) took 400IU vitamin D, and the last group (Group 3) took 1000IU vitamin D (n=12). The drugs were given once a day for 8 weeks to the groups by gavage. After 8 weeks, the rats were tested in the elevated plus-maze and open field tests. In the open field, spent time in the central area (STC) values of Group 2 (p<0.02) and Group 3 (p<0.05) were found to be much higher than Group 1. While the STC value of Group 3 was the lowest, the STP value was nearly the same in Group 2 and Group 3. The number of rearing was the highest in Group 2. When the elevated plus-maze test evaluated, there were no statistical differences between groups for the spent time in the closed arm (STCA) and spent time in the open arm (STOA), but in Group 2, STCA value was the lowest and STOA value was the highest from other groups. Entry number of closed arms (ECA) value was statistically higher in Group 2 than Group 3 (p=0.05). Our findings showed that 400IU and 1000IU doses of vitamin D exhibited anxiogenic effects, with no significant difference between the two groups. As a result, an increase in vitamin D supplementation causes an increase in anxiety. D vitamini, güneş ışığına maruz kalmaya tepki olarak deride üretilen yağda çözünen bir vitamindir. Kalsiyum ve fosfat homeostazının yanı sıra nöromüsküler ve immünolojik fonksiyon da dahil olmak üzere çeşitli süreçler için gereklidir. Anksiyete, keşif davranışı ve farklı D vitamini dozları arasındaki ilişkiyi incelemek için çok fazla çalışma yapılmamıştır. Mevcut çalışma, yükseltilmiş artı labirentini kullanarak sıçanlarda farklı D vitamini dozlarının anksiyete ile ilgili davranışlar üzerindeki etkisini değerlendirmeyi amaçlamaktadır. yöntemi ve açık alan testi kullanılarak sıçanların keşif davranışları ve genel aktiviteleri üzerine. Bu çalışmada 8 haftalık 36 adet genç erkek Wistar rat kullanıldı. Sham grubu, D vitamini grubu olarak 3 gruba ayrıldılar. Ad libitum 300 IU Vit D içeren yemle beslendiler. Sham grubu (grup 1) sonda ile normal su aldı (n=12). D vitamini grubu (grup 2) 400 IU D vitamini aldı ve son grup (grup 3) 1000 IU D vitamini (n=12) aldı. İlaçlar gruplara 8 hafta boyunca günde bir kez gavaj yoluyla verildi. 8 hafta sonra, sıçanlar yükseltilmiş artı labirent ve açık alan testlerinde test edildi. Açık alanda Grup 2 (p<0.02) ve Grup 3(p<0.05) orta alanda geçirilen süre (STC) değerleri Grup 1'e göre çok daha yüksek bulundu. En düşük STP değeri Grup 2 ve Grup 3'te hemen hemen aynıydı. Yetiştirme sayısı Grup 2'de en yüksekti. Yükseltilmiş artı labirent testi değerlendirildiğinde. Grup 2'de diğer gruplara göre kapalı kolda geçirilen süre (STCA) değeri en düşük, açık kolda geçirilen süre (STOA) değeri en yüksek bulundu. kapalı kol giriş sayısı (ECA) değeri Grup 2'de G3'e göre istatistiksel olarak daha yüksekti (p=0,05). Bulgularımız, 400 IU ve 100 IU D vitamini dozlarının ikisi arasında anlamlı bir fark olmaksızın anksiyojenik etkiler sergilediğini gösterdi. Sonuç olarak D vitamini takviyesinin artması anksiyetede artışa neden olur.Item The effect of a high dose of vitamin D on spatial learning and memory in rats(Başkent Üniversitesi Sağlık Bilimleri Enstitüsü, 2021) Elshahoubi, Taha; Dolu, Nazan“Vitamin D” is a prohormone steroid and has a place with the fat-soluble vitamins. It’s liable for endocrine, paracrine and autocrine functions. Vitamin D is likewise basic for calcium absorption, bone mineralization, calcium and phosphorus homeostasis, nerve conduction, hormonal release, and neuromuscular function, acts as a natural antioxidant. Its impact on learning has not been widely reported. In the literature, there are several of discrepancies among age groups when it comes to this condition. This study aimed to see how vitamin D supplementation affected the cognitive performance of young male rats in the Morris water maze. Serving this purpose, 36 young male Wistar rats aged 8 weeks old age was divided into three groups with the control group (oral gavage normal saline), low dose vitamin D group (400 IU/ day) and high dose vit D group (1000 IU/ day. Rats were tested for their capacity to memorize the location of a platform after 8 weeks of daily supplementation in two phases: acquisition (next 3 days, fixed platform location), and retention (next 3 days, variable platform location) (forth day, removed platform). There were four trials per day (interval between trials 20-25 minutes). In spatial learning and working memory, the time spent finding the platform and duration of time spent in the quarter area of the maze including the platform were compared statistically in a number indicating the percentage of total time. There were no significant inter-group differences (p>0,05). From the first to the third day of training, all groups of animals improved their learning performance while decreasing the time spent searching for the platform (p<0,05). In this study, it was shown that 8 weeks of 400 and 1000 IU/day vit D application did not have any effect on learning to locate, but it did not cause impairment in the learning process either.Item Effect of vildagliptin and metformin on anxiety in streptozotocininduced diabetic rats(Başkent Üniversitesi Sağlık Bilimleri Enstitüsü, 2022) Alshareef, Mohammed; Yiğit, Ayşe ArzuDiabetes mellitus is caused by insulin secretion deficiency or a disorder in its action. Vildagliptin and metformin are two of the most recognized drugs that are used in the treatment of type 2 diabetes mellitus. The study aimed to compare the effects of metformin, vildagliptin, and their combined effect in altering behaviours of streptozocin-induced diabetic rats. For this purpose, after 10 of 50 male Wistar rats were separated as the control group (C), diabetes was induced in the others with streptozotocin. After separation of 10 diabetic control group (D), other diabetic animals were divided into 3 and treated with 500 mg/kg metformin (DM), 50 mg/kg vildagliptin (DV) and a combination of both (DMV) for 15 days. The animals were then subjected to open field and elevated plus maze testing. In the open field test, while the number of rearing increased in the group with diabetes (p<0.001), it was significantly decreased in the metformin, vildagliptin and combined treatment group compared to the diabetic control group (p<0.001, p<0.01, and p<0.001, respectively). While the time spent in the center decreased in the D and DM groups compared to the C group (p<0.05), the time spent in the combined treatment group in the center was longer than in all other diabetes groups (p<0.01). The time spent in the periphery was also decreased in the DMV group compared to the other groups with diabetes (p<0.05). The number of urinations increased in the D, DM and DV groups compared to the control group, and decreased in the DMV group compared to the diabetic groups. While the number of defections increased in the D group compared with the C group (p<0.01), it was decreased in the DMV group compared to the D group (p<0.05).In the elevated plus maze test, while the time spent in enclosed arms increased in the group with diabetes compared with the C group (p<0.05), there was no difference in the treatment groups compared to the D group. As a result, our study showed that the effects of vildagliptin and metformin on anxiety in diabetic animals were not evident when they were used alone; also, it showed that combined treatments can be effective in reducing anxiety caused by diabetes. Diabetes mellitus, insülin sekresyon eksikliğinden veya etkisindeki bir bozukluktan kaynaklanan metabolik bir hastalıktır. Metformin ve vildagliptin, tip 2 diabetes mellitus tedavisinde kullanılan en bilinen ilaçlardan ikisidir. Çalışmanın amacı, streptozosin ile diyabet oluşturulmuş sıçanlarda metformin, vildagliptin ve bunların kombine kullanımının anksiyete üzerine etkilerini ortaya koymaktır. Bu amaçla, 50 erkek Wistar sıçanın 10’u kontrol grubu (K) olarak ayrıldıktan sonra diğerlerinde streptozotosin ile diyabet oluşturuldu. Diyabetli hayvanların da 10’u diabetic kontrol grubu (D) olarak ayrıldıktan sonra kalanları 3’e ayrılarak 500 mg/kg metformin (DM), 50 mg/kg vildagliptin (DV) ve her ikisinin kombinasyonu (DMV) ile 15 gün boyunca tedavi edildi. Sonrasında hayvanlar açık alan ve yükseltilmiş artı labirent testine tabi tutuldu. Açık alan testinde, diyabetli grupta artan ayağa kalkma sayısı (p<0.001), metformin, vildagliptin ve kombine tedavi uygulanan grupta diyabetik kotrol grubuna göre anlamlı oranda azaldı (sırasıyla p<0.001, p<0.01 ve p<0.001). Merkezde zaman geçirme süresi D ve DM grubunda K grubuna gore azalırken (p<0.05), kombine tedavi grubunun merkezde geçirdiği süre diğer bütün diyabetli gruplara gore daha çok oldu (p<0.01). Periferde geçirilen süre de DMV grubunda diyabetli diğer gruplara göre azaldı (p<0.05). Diyabet, DM ve DV gruplarında kontrol grubuna göre artan idrar yapma sayısı, DMV grubunda diyabetli gruplara göre azaldı. Defekasyon sayısı ise D grubunda K grubuna göre artarken (p<0.01), DMV grubunda D grubuna gore azalma görüldü (p<0.05).Yükseltilmiş artı labirent testinde de kapalı alanda geçirilen süre diyabetli grupta K grubuna gore artarken (p<0.05), tedavi gruplarında D grubuna gore bir farklılık görülmedi. Sonuç olarak araştırmamız, vildagliptin ve metforminin tek başlarına kullanımlarında diyabetik hayvanlarda oluşan kaygıya karşı etkileri belirgin değilken; kombine kullanıldığı tedavilerin diyabetin oluşturduğu kaygıyı azaltmada etkili olabileceğini gösterdi.Item Parathyroidectomy improves cardiovascular risk factors in normocalcemic and hypercalcemic primary hyperparathyroidism(2019) Beysel, Selvihan; Caliskan, Mustafa; Kizilgul, Muhammed; Apaydin, Mahmud; Kan, Seyfullah; Ozbek, Mustafa; Cakal, Erman; 31068134BackgroundParathyroidectomy has ameliorated cardiovascular risk factors in patients with hypercalcemic primary hyperparathyroidism (PHPT), but the effect of parathyroidectomy on normocalcemic PHPT is not exactly known. This case-controlled study aimed to investigate the effect of parathyroidectomy on cardiovascular risk factors in patients with normocalcemic and hypercalcemic PHPT.MethodsSubjects with normocalcemic PHPT (n=35), age- and sex-matched hypercalcemic PHPT (n=60) and age- and sex-matched control (n=60) were included. Cardiometabolic disorders were investigated with traditional cardiometabolic risk factors and the Framingham cardiovascular risk score (CRS) before and 6months after parathyroidectomy.ResultsDiabetes, dyslipidemia, hypertension, obesity, insulin resistance, osteoporosis, having fractures were similarly increased in the hypercalcemic and normocalcemic PHPT groups (p>0.05) compared with the controls (p<0.05). Blood pressures, glucose metabolism (glucose, insulin, HOMA-IR) and lipid profiles were similarly increased in the PHPT groups (p>0.05) compared with the controls (p<0.05). After parathyroidectomy, blood pressures, serum total cholesterol, and HOMA-IR were decreased in both PHPT groups (p<0.05). CRS was lower in the controls (5.743.24, p<0.05). After parathyroidectomy, CRS was decreased in the normocalcemic (11.98 +/- 10.11 vs. 7.37 +/- 4.48) and hypercalcemic (14.62 +/- 11.06 vs. 8.05 +/- 7.72) PHPT groups. Increased blood pressures were independent predictors of serum iPTH.Conclusion p id=Par4 The normocalcemic and hypercalcemic PHPT groups had similarly increased cardiovascular risk factors, even independently of serum calcium. Parathyroidectomy ameliorated the increased cardiovascular risk factors in both normocalcemic and hypercalcemic PHPT.