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Permanent URI for this collectionhttps://hdl.handle.net/20.500.14288/3
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Publication Metadata only Effects of alprazolam and haloperidol on thyroglobulin, antithyroglobulin, anti thyroid peroxidase and TSH in Rat(Walter De Gruyter Gmbh, 2018) Samadi, Afshin; Ansari, Mohammad Hassan Khadem; Ulusu, Nuriye Nuray; Faculty Member; School of Medicine; 6807Background: A large number of psychotropic drugs can interfere with the thyroid physiology, function and autoimmunity. Objective: The aim of the present study was to investigate the effects of alprazolam and haloperidol on thyroglobulin, antithyroglobulin (aTg), antithyroid peroxidase, and thyroid stimulating hormone levels on rats. Materials and Methods: First group of adult male Wistar rats was the control, second group received 0.5 mg kg(-1) haloperidol in physiological saline and the third group received 0.5 mg kg(-1) alprazolam, via gastric gavage once daily for 28 days. Plasma levels of all thyroid function tests were measured with chemiluminescent assay. Results: We have investigated a decrease in aTg amounts of control group (5.461 +/- 0.718) compared with drug treated rats with alprazolam (1.433 +/- 0.225) and haloperidol (1.21 +/- 0.228). (P-aTg = 0.00([ALP]), P-aTg = 0.01([HAL])). Although there were not any change in thyroglobulin levels in the haloperidol treated groups (0.9583 +/- 0.014) relative to control group (0.975 +/- 0.015); but in opposition Tg levels decreased significantly in response to alprazolam (0.36 +/- 0.16) compared with the control group (0.975 +/- 0.015), p-values are (P-Tg = 0. 001([ALP])), (P-Tg = 0. 021([HAL])). Conclusion: We found that these two drugs may interfere with the thyroid physiology and metabolism.Publication Metadata only Co-existence of mutations in PRRT2 and ABCC6 genes in a Turkish family(Türkiye Klinikleri, 2020) Şenel, Gülçin Benbir; Tezen, Didem; Apaydın, Hülya; Tekgül, Şeyma; Başak, Ayşe Nazlı; Master Student; Faculty Member; Koç University Research Center for Translational Medicine (KUTTAM) / Koç Üniversitesi Translasyonel Tıp Araştırma Merkezi (KUTTAM); Graduate School of Sciences and Engineering; School of Medicine; 63142; 1512Paroxysmal kinesigenic choreoathetosis (PKC) is an inherited disorder with an autosomal dominant mode of inheritance, caused mostly by the mutations in PRRT2 (proline-rich transmembrane protein-2) gene, located on chromosome 16. Pseudoxanthoma elasticum (PXE) is a hereditary metabolic disease with autosomal recessive inheritance resulting from the mutations in the ABCC6 (ATP-Binding Cassette, Subfamily C, Member 6) gene, located also on chromosome 16. Here we present a female patient with familial paroxysmal kinesigenic dyskinesia and benign familial infantile convulsions (BFIC), in whom both a heterozygous truncating frameshift mutation in the PRRT2 gene and a heterozygous missense mutation in the ABCC6 gene were demonstrated. The co-existence of these two mutations has not been reported in the literature. Although the clinical symptomatology of PXE was not present in our patient, some family members of our index case had. Here we present a Turkish family with two different mutations on the same chromosome, namely PRRT2 and ABCC6 mutations. However, because these two mutations have separate parental inheritance and are not in linkage disequilibrium, the co-existence was reported as co-incidental.Publication Metadata only Identifying and solving scientific problems in the medicine: key to become a competent scientist(Walter De Gruyter Gmbh, 2020) N/A; Aydemir, Duygu; Ulusu, Nuriye Nuray; PhD Student; Faculty Member; Koç University Research Center for Translational Medicine (KUTTAM) / Koç Üniversitesi Translasyonel Tıp Araştırma Merkezi (KUTTAM); Graduate School of Health Sciences; School of Medicine; N/A; 6807The scientific method can be described as a multistep and detailed process, in which finding the best question is the first and most crucial step. Thus, scientific problem should be examined thoroughly in different ways and perspectives. The amount and diversity of scientific data are enormously increasing and becoming more specific day by day, therefore traditional observational biology is not sufficient on an individual basis to understand and treat multifactorial diseases. Moreover, protocols, documentations, information, outcomes, precisions, and considerations of evidence should be improved to answer scientific questions correctly during the scientific research. Because of the diversity of the data and the methods, statisticians and methodologists should be involved and contribute to the all stages of research. Besides that, all scientific data should be certainly reproducible and repeatable. Scientific knowledge is in a state of flux and becomes more complex day by day. Thus, becoming a competent scientist needs, abilities and skills such as creativity, hardworking and self-discipline that all requires lifelong learning, searching, and widening scientific horizons consistently. / Bilimsel yöntem, en iyi soruyu bulmanın ilk ve en önemli adım olduğu çok aşamalı ve ayrıntılı bir süreç olarak tanımlanabilir. Bu nedenle, bilimsel problem farklı şekillerde ve bakış açılarıyla ayrıntılı olarak incelenmelidir. Bilimsel verilerin sayısı ve çeşitliliği gün geçtikçe son derece hızlı bir biçimde artmakta ve daha belirgin hale gelmektedir, bu nedenle gelenekseli, gözlemsel biyoloji, çok faktörlü hastalıkları anlamak ve tedavi etmek için tek başına yeterli değildir. Ayrıca, bilimsel araştırma sırasında bilimsel sorulara doğru cevap verebilmek için protokoller, belgeler, bilgiler, sonuçlar, kesinlikler ve kanıtlar iyileştirilmelidir. Verilerin çeşitliliği ve yöntemlerden dolayı, istatistikçiler ve metod geliştirenler araştırmaya katılmalı ve araştırmanın her aşamasına katkıda bulunmalıdır. Bunun yanı sıra, tüm bilimsel veriler kesinlikle tekrarlanabilir olmalıdır. Bilimsel bilgi bir akış halindedir ve gün geçtikçe daha karmaşık hale gelir. Böylece, yetkin bir bilim insanının yaratıcılık, çalışkanlık ve öz disiplin gibi ihtiyaçları, yetenekleri ve becerileri herkesin yaşam boyu öğrenmeyi, aramayı ve bilimsel ufukları tutarlı bir şekilde genişletmeyi gerektiren bir hale gelir.Publication Metadata only Possible mechanisms of transmissible cancers in tasmanian devils(Walter De Gruyter Gmbh, 2017) Ulusu, Nuriye Nuray; Faculty Member; School of Medicine; 6807Physical transfer of viable tumor cells from one organism to another is known as transmissible cancer, which is observed in dogs, Tasmanian devils, Syrian hamsters, and some soft-shell clams. Tasmanian devil facial tumor disease is transmitted like an infectious disease between individuals through biting and other close contact. This extinction type is quite different from the other extinction types such as ecological factors. Transmissible cancers' cellular metabolism is also different from the both normal cellular metabolism and other types of cancers' metabolism. The lack of an immune response against the Tasmanian devil facial tumor cells is the one of the key points in the transmission of the cancerous cells. The differentiated cellular metabolism and absence of immune reaction may be due to the organisms' enzymes. Cells may have altered surface proteins by altering enzymatic activities that cannot be recognized by both the innate and adaptive responses. The promiscuity of the key enzymes may be associated with unwanted side effects, such as cannot recognize molecular patterns on the transmitted cell or hypomethylation of DNA by altering catalytic properties enzymes or altered matrix metalloproteinases or cathelicidins.Publication Metadata only Biomolecular solution X-ray scattering at n2STAR beamline(Muğla Sıtkı Koçman Üniversitesi Fen Bilimleri Enstitüsü, 2022) Department of Molecular Biology and Genetics; N/A; Department of Molecular Biology and Genetics; Department of Molecular Biology and Genetics; Department of Molecular Biology and Genetics; Göcenler, Oktay; Yenici, Cansu Müşerref; Kahraman, Kerem; Büyükdağ, Cengizhan; Dağ, Çağdaş; Undergraduate Student; Master Student; Undergraduate Student; Undergraduate Student; Faculty Member; Department of Molecular Biology and Genetics; Koç Üniversitesi İş Bankası Enfeksiyon Hastalıkları Uygulama ve Araştırma Merkezi (EHAM) / Koç University İşbank Center for Infectious Diseases (KU-IS CID); College of Sciences; Graduate School of Sciences and Engineering; College of Sciences; College of Sciences; College of Sciences; N/A; N/A; N/A; N/A; N/ASmall angle X-ray Scattering (SAXS) is a method for determining basic structural characteristics such as the size, shape, and surface of particles. SAXS data can be used to generate low resolution models of biomolecules faster than any other conventional experimental structural biology tool. SAXS data is mostly collected in synchrotron facilities to obtain the best scattering data possible however home source SAXS devices can also generate valuable data when properly optimized. Here, we examined sample data collection and optimization at home source SAXS beamline in terms of the concentration, purity, and duration of data acquisition. We validated that high concentration, monodisperse and ultra pure protein samples obtained by size exclusion chromatography are necessary for generating viable SAXS data using a home source beamline. At least one hour is required to generate a feasible model from SAXS data, although longer data collection times do not always translate to higher resolutions. We show that with small optimizations during data collection and analysis SAXS can characterize properties such as oligomerization, molecular mass, and overall shape of particles in solution under physiological conditions. / Öz: Küçük açılı X-ışını Saçılımı (SAXS), parçacıkların boyutu, şekli ve yüzeyi gibi temel yapısal özellikleri belirlemek için kullanılan bir yöntemdir. SAXS verisi ile diğer geleneksel deneysel yapısal biyoloji araçlarından daha hızlı düşük çözünürlüklü biyomolekül modelleri hesaplanabilir. SAXS verileri, mümkün olan en iyi saçılma verilerini elde etmek için çoğunlukla senkrotron tesislerinde toplanır, ancak yerel kaynaklı SAXS cihazları da uygun şekilde optimize edildiğinde değerli veriler üretebilir. Burada, yerel kaynaklı SAXS ışın hattında numune veri toplama ve optimizasyonunu konsantrasyon, saflık ve veri toplama süresi açısından inceledik. Boyut dışlama kromatografisiyle elde edilen yüksek konsantrasyonlu, monodispers ve ultra saf protein numunelerinin, ev kaynaklı laboratuvar tipi ışın hattı kullanılarak uygulanabilir SAXS verilerinin üretilmesi için gerekli olduğunu doğruladık. Daha uzun veri toplama süresi her zaman daha yüksek çözünürlükler üretmez, ancak SAXS verilerinden uygun bir model oluşturmak için en az bir saat gereklidir. Ayrıca, hem veri toplama sırasında hem de daha sonra veri analizi sırasında küçük optimizasyonlarla SAXS, fizyolojik koşullar altında oligomerizasyon, moleküler kütle ve çözeltideki parçacıkların genel şekli gibi özellikleri belirleyebilir.Publication Metadata only Perceived barriers to diabetes management at home: a qualitative study(Walter De Gruyter Gmbh, 2019) Acil, Dilay; Bahar, Zühal; Faculty Member; School of Nursing; 3918Background: Diabetes is a complex and progressive disease and its treatment requires self-management strategies specific for each patient. The aim of the study was to determine perceived barriers to diabetes management at home in type II diabetes patients. Materials and methods: Inclusion criteria of this phenom-enological study included living in Izmir and a diagnosis for the last 1 year; 15 patients with diabetes participated the study. A semi-structured interview form based on Health Belief Model created by researchers with experts opinion, was used at in-depth face-to-face interviews. Data were analyzed with content analysis. Ethical and hospital approval was obtained. Participation of individuals is based on volunteerism; written informed consent from patients who accepted the study. Results: Perceived barriers to fulfilling home care needs and sustaining behavior of diabetes management included six themes, i.e. insufficient knowledge of diabetes, inability to accept diabetes, non-adherence to diabetes and exercise, problems with health care services, fear and effects of the family and the society and relevant subthemes. Conclusion: These findings about the barriers of the patients should provide guidance for patient specific nursing interventions.