Callistosporium Singer, a New Genus Record For Turkish Mycobiota

DergiPark: 696547trkjnatBu çalışmanın amacı Türkiye mikobiyotası için yeni bir kaydı tanıtmaktdır. Benzer makro- ve mikromorfoloji ve yüksek çekirdek ribozomal büyük alt ünite dizi benzerliğine bakılarak bu mantar Callistosporium olivascens (Boud.) Bon. olarak teşhis edildi. Literatür araştırmalarına göre bu bulgu cinsin Türkiye’deki ilk kaydıdır.This study aims to describe and introduce a new record for the Turkish mycobiota. Based on the similar macro- and micromorphology, and high nuclear ribosomal large subunit sequence similarity, the mushroom was identified as Callistosporium olivascens (Boud.) Bon. According to the literature research, we found out that this finding is the first record of the genus Callistosporium in Turkey

Fungi determined in Ankara University Tandoğan Campus area (Ankara-Turkey)

The current study is based on fungi and infected host plant samples collected from Ankara University Tandoğan Campus (Ankara) between 2017 and 2019. As a result of the field and laboratory studies, 148 fungal species were identified. With the addition of formerly recorded 14 species in the study area, a total of 162 species belonging to 87 genera, 49 families, and 17 orders were listed.Bu çalışma, Ankara Üniversitesi Tandoğan Kampüsü'nden (Ankara) 2017 ve 2019 yılları arasında toplanan mantar ve enfekte olmuş konukçu bitki örneklerine dayanmaktadır. Arazi ve laboratuvar çalışmaları sonucunda 148 mantar türü tespit edilmiştir. Daha önce bildirilen 14 tür dahil olmak üzere 17 ordo, 49 familya, 87 cinse mensup 162 tür listelenmiştir

The role of the resistive index in Hashimoto's thyroiditis: a Sonographic pilot study in children

OBJECTIVE: The role of Doppler ultrasonography in the diagnosis of diffuse thyroid diseases is not well established. In particular, Doppler ultrasonography findings in children with Hashimoto's thyroiditis are very limited. We examined gray-scale and Doppler ultrasound findings in Hashimoto's thyroiditis in children in an attempt to understand the feasibility of future prospective controlled studies. MATERIALS AND METHODS: Twenty-one children with newly diagnosed Hashimoto's thyroiditis were recruited in the study. The patients were euthyroid or had subclinical hypothyroidism at the time of the ultrasonography examination. According to the color Doppler scale developed by Schulz et al., thyroid glands were classified into four patterns based on visual scoring and the mean resistive index (RI), which was calculated via measurements from both lobes, and these results were compared with gray-scale findings. RESULTS: The mean RI value, calculated as the mean of the RI values of both lobes obtained from each patient, was found to be 0.57 ± 0.05 (range 0.48-0.67) cm/sn. The distribution of thyroid classifications was as follows: Pattern 0, n = 7; Pattern I, n = 6; Pattern II, n = 4; and Pattern III ("thyroid inferno"), n = 4. The mean RI values in patients with normal or near-normal gray-scale findings (n = 10) and patients with more substantial gray-scale changes (n = 11) were not significantly different and were lower than the values in normal children previously presented in the literature. CONCLUSION: The results indicated that the RI may be more sensitive than other ultrasound parameters for the diagnosis of Hashimoto's thyroiditis

CT and MRI Findings of Sclerosing Angiomatoid Nodular Transformation of the Spleen: Spoke Wheel Pattern

Sclerosing angiomatoid nodular transformation of the spleen is a recently described benign pathologic entity that is characterized by round shaped vascular spaces that are lined by endothelial cells, and the spaces are circumscribed by granulomatoid structures. Microscopically, all the reported cases had multiple angiomatoid nodules in a fibrosclerotic stroma. Each angiomatoid nodule was made up of slit-like, round or irregular shaped vascular spaces that were lined by endothelial cells and interspersed ovoid cells. We present here the CT and dynamic gadolinium-enhanced MR findings of a patient with sclerosing angiomatoid nodular transformation. The spoke-wheel pattern that was observed on MRI in this case may be an important imaging clue for making the correct diagnosis of this benign lesion

The Case of MRI Repetitions with Direct and Indirect Cost Implications: Evidence from Hacettepe University Hospitals

This study investigates the case of repeated MRIs using data from Hacettepe University Hospitals. Results indicate that almost 34% of MRI consultations have to be repeated within the same year due to suboptimal quality that hinders correct assessment and diagnosis. Suboptimal quality refers to; movement artefacts, use of wrong scan technique or sequence, inexperienced reader and/or shortened time intervals. In fact, almost 30% of those repetitions result in a change in diagnosis. Results suggest that the probability of repetition is higher among women and children

Proton density fat fraction: magnetic resonance imaging applications beyond the liver

Magnetic resonance imaging-proton density fat fraction (MRI-PDFF) is an emerging quantitative imaging biomarker that accurately measures the fat fraction of tissue by correcting factors influencing magnetic resonance signal intensity. Beyond fat quantification, it also measures R2* which is a direct measure of iron concentration. The utilization of MRI-PDFF in liver diseases is well established. In the present review, we focused on applications of MRI-PDFF in different body areas including pancreas, bone, muscle, spleen, testis, visceral, and subcutaneous adipose tissue. Future studies can enable tracking of quantitative fat fraction changes in different organs simultaneously, which can be critical in understanding fat metabolism

The Impact of Warmed Intravenous Contrast Material on the Bolus Geometry of Coronary CT Angiography Applications

Objective This study was designed to investigate the effect of administration of warmed contrast material (CM) on the bolus geometry and enhancement as depicted on coronary CT angiography. Materials and Methods A total of 64 patients (42 men, 22 women; mean age, 56 years) were randomly divided into two groups. Group 1 included 32 patients administered CM (Omnipaque [Iohexol] 350 mg I/ mL; Nycomed, Princeton, NJ) saline solutions kept in an incubator at a constant temperature (37℃). Group 2 included 32 patients administered the CM saline solutions kept at constant room temperature (24℃). Cardiac CT scans were performed with a dual source computed tomography (DSCT) scanner. For each group, region of interest curves were plotted inside the ascending aorta, main pulmonary artery and descending aorta on test bolus images. Using enhancement values, time/enhancement diagrams were produced for each vessel. On diagrams, basal Hounsfield unit (HU) values were subtracted from sequentially obtained values. A value of 100 HU was accepted as a cut-off value for the beginning of opacification. The time to peak, the time required to reach 100 HU opacification, maximum enhancement and duration of enhancement above 100 HU were noted. DSCT angiography studies were evaluated for coronary vessel enhancement. Results Maximum enhancement values in the ascending aorta, descending aorta and main pulmonary artery were significantly higher in group 1 subjects. In the ascending aorta, the median time required to reach 100 HU opacification during the test bolus analysis was significantly shorter for group 2 subjects than for group 1 subjects. In the ascending aorta, the descending aorta and main pulmonary artery, for group 1 subjects, the bolus geometry curve shifted to the left and upwards as compared with the bolus geometry curve for group 2 subjects. Conclusion The use of warmed CM yields higher enhancement values and a shorter time to reach maximum enhancement duration, resulting in a shift of the bolus geometry curve to the left that may provide optimized image quality.PubMedWoSScopu

Homozygous OB-fold variants in telomere protein TPP1 are associated with dyskeratosis congenita–like phenotypes

This research was originally published in Blood Online. Tummala, H., et al. (2018). "Homozygous OB-fold variants in telomere protein TPP1 are associated with dyskeratosis congenita–like phenotypes." Blood 132(12): 1349-1353. Title. Blood. Prepublished Sept 20 2018; DOI https://doi.org/10.1182/blood-2018-03-837799Dyskeratosis congenita (DC) and its severe form, Hoyeraal-Hreidarsson syndrome (HHS), are rare and have life-threatening failure of hematopoiesis. Typically, DC patients present with disease features such as nail dystrophy, oral leukoplakia, and abnormal skin pigmentation along with peripheral pancytopenia and marrow hypoplasia with strong predisposition to cancer.1 In DC, hematopoietic failure occurs due to critical shortening of telomeres,2,3 which enhances the DNA damage response4,5 and leads to premature senescence of hematopoietic stem cellsMedical Research Council (grant MR/P018440/1), Bloodwise (grant 14032), and Children with Cancer UK (grant 2013/144)

Researching elementary students' points of view about science lesson by using mastery learning model

Bu araştırmada ilköğretim öğrencilerinin okulun yapısı, öğrencinin cinsiyeti, yardım alma durumu, anne ve babanın aylık gelir durumu ve öğrenim düzeyi ile Fen ve Teknoloji dersindeki akademik başarısı değişkenlerine göre, fen ve teknoloji ders kazanımları ile ilgili bilişsel, duyuşsal, öğrenme stratejilerine ilişkin görüşleri ve başarı test puanları arasında nasıl bir ilişkinin olduğunu ortaya çıkartmak amaçlanmıştır._x000B_Araştırma2011-2012 öğretim yılı İzmir İli Buca İlçesinde yer alan ilköğretim okullarından random tekniğine göre seçilen, Makbule Süleyman Alkan İlköğretim Okulu,Tuğsavul İlköğretim Okulu, Ege İhracatçıları Birliği İlköğretim Okulu, Ali Kuşçu İlköğretim Okulu ve Kaynaklar İlköğretim Okulunda sekizinci sınıfa devam etmekte olan 289 öğrenciden oluşan betimsel bir araştırmadır._x000B_ Elde edilen veriler SPSS istatistik programı aracılığıyla çözümlenmiş olup, t testi, varyans analizi, yüzdelik değerler ve Scheffe testi kullanılmıştır.Araştırmadaki veriler 25 maddelik alpha güvenirlik katsayıları 0,970 olan bilişsel alan, 0,915 olan duyuşsal alan, 0,918 olan başarı testi ölçeği ve 23 maddelik alpha güvenirlik katsayısı 0,922olan öğrenme stratejileri ölçeği ile toplanmıştır._x000B_ Araştırma sonucunda elde edilen bulgulara göre ilköğretim sekizinci sınıf öğrencilerinin okul türüne, öğrencilerin cinsiyetine, anne ve babanın öğrenim durumuna, aylık gelir düzeyine, bir önceki dönem akademik başarı durumuna ve yardım alma durumları ile bu öğrencilerin, Fen ve Teknoloji dersine ilişkin bilişsel alan, duyuşsal alan, öğrenme stratejileriyle ilgili görüşleri ve başarı testi puanları arasında anlamlı farklılıklar bulunmuştur._x000B_ Random tekniğine göre seçilen ve 2010 yılında yapılan SBS sonuçlarına göre ilk sırada yer alan Makbule Süleyman Alkan İlköğretim Okulunun strateji algı ölçeği dışındaki tüm ölçeklerde daha olumlu olduğu sonucuna ulaşılmıştır. Ailelerin gelir ve öğrenim düzeyi yükseldikçe, tüm ölçeklerdeki ortalama puanlar ve başarı testinden alınan puanların da yükseldiği görülmüştür. Ayrıca bir önceki dönem başarı puanları yüksek olan öğrencilerin ölçeklerden aldıkları ortalama puanlar ile başarı testinden alınan puanların da daha olumlu olduğu sonucuna ulaşılmıştır. Öğrencilerin cinsiyetlerine göre ölçeklerden ve başarı testinden aldıkları puanların benzer düzeylerde olduğu söylenebilir. The objective of this research is to bring out the relationship between the cognitive, perceptional conceptions of elementary students about science lesson and their points of view about the learning strategies and achievement test results; and the variables such as school, the gender of the teacher and of the student, educational background and income level of the parents, and the support they receive to be successful._x000B_This research is a descriptive research which has been carried out with 289 8th grade elementary school students who are randomly chosen and studying in Makbule Süleyman Alkan Elemantary School, Tuğsavul Elemantary School, Ege İhracatçıları Birliği Elemantary School, Ali Kuşçu Elemantary School and Kaynaklar Elemantary School in the district of Buca in İzmir in the 2011-2012 academic year._x000B_The data for this research has been collected with the success test,cognitive and perceptional scales of 25 topics whose alpha reliability coefficients are 0.918 ,0.970 , 0.915 respectively and learning strategies scales of 23 topics whose alpha reliability coefficient is 0.922. Datas for the research are resolved with the SPSS statistics programme and percentage, variance analysis, Scheffe and t-test are used in the analysis of the data._x000B_According to the data collected in this research, there are meaningful differences between 8th grade students? and their gender, their type of school , income level of their parents and the support they received to be successful; the cognitive and perceptional conceptions about science lesson and their thoughts about the learning strategies and achievement test results._x000B_In 2010, selected by random technique and according to the results of SBS examination it has been concluded that Makbule Süleyman Alkan Elemantary School which is the most successful school between the elemantary schools in Buca district according to the SBS results, is more positive at all the scales except for perception scale. All scales and success test scores of the children whose families have higher income and education levels, showed increases in mean scores. In addition,the mean scores and the success test scores of the students with higher scores on the scales of the previous term are concluded to be more positive. Also It can be said that according to gender of the students; scores obtained from the scales and success tests have the similar levels