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https://www.readbyqxmd.com/read/29132907/determination-of-3-5-dimethylpyrazolium-glyceroborate-nitrification-inhibitor-in-nitrogen-fertilizer-samples-hplc-dad-method-development-and-validation-for-3-5-dimethylpyrazole
#1
Serkan Şahan, Uğur Şahin, Mustafa Başaran, Oğuzhan Uzun, Adem Güneş
3,5 - Dimethylpyrazolium glyceroborate is a nitrification inhibitor (a member of pyrazole derivatives) used for the fixation of nitrogen into the soil. In this study, an HPLC-DAD method was developed and validated for determination of 3,5 - dimethylpyrazole in order to determine 3,5 - dimethylpyrazolium glyceroborate in fertilizer samples. For method development, analytical parameters like type of eluent solution and column filling material and device parameters like eluent flow rate, column oven temperature and measurement wavelength were all optimized...
November 2, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29131519/displaying-tetra-membrane-spanning-claudins-on-enveloped-virus-like-particles-for-cancer-immunotherapy
#2
Irene C Schneider, Jessica Hartmann, Gundula Braun, Jörn Stitz, Thorsten Klamp, Mahjoub Bihi, Ugur Sahin, Christian J Buchholz
Virus-like particles (VLPs) displaying foreign antigens have become an important tool in vaccination including the induction of immune responses against self-antigens. Claudin 6 (CLDN6) has been identified as tumor-associated antigen and is therefore a potential target for tumor vaccination strategies. However, as tetra-membrane spanning protein its incorporation into VLPs while preserving a native fold is challenging. Here, we attempted the incorporation of a panel of engineered CLDN6 variants into the membrane of retrovirus-derived VLPs...
November 13, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/29118947/in-hospital-and-long-term-results-of-primary-angioplasty-and-medical-therapy-in-nonagenarian-patients-with-acute-myocardial-infarction
#3
Muslum Sahin, Lutfi Ocal, Ali Kemal Kalkan, Alev Kilicgedik, Mehmet Emin Kalkan, Burak Teymen, Ugur Arslantas, Mehmet Muhsin Turkmen
Introduction: Although percutaneous coronary intervention is an accepted "first-line" therapy in acute ST elevation myocardial infarction (STEMI) in general population, few data are available on the short- and long-term outcomes of very old patients (age >90 years). Our aim is to evaluate and compare the short and long-term outcomes after primary percutaneous coronary intervention (PPCI) or medical therapy in nonagenarian patients with STEMI. Methods: We retrospectively identified patients older than 90 years old in our clinic, with acute STEMI who presented within 12 hours after symptoms onset, either underwent PPCI or medically treated...
2017: Journal of Cardiovascular and Thoracic Research
https://www.readbyqxmd.com/read/29071558/the-relation-between-brain-mri-findings-and-blood-manganese-levels-in-renal-transplantation-hemodialysis-and-peritoneal-dialysis-patients
#4
Esra Akcan, Sultan Özkurt, Garip Sahin, Ahmet Ugur Yalcin, Baki Adapinar
PURPOSE: Various factors can affect blood and tissue levels of trace elements in patients with end-stage renal disease. There are a few studies showing hyperintensity of basal ganglia associated with manganese deposition in hemodialysis (HD) patients. The present study aimed to investigate the intensity changes as markers of manganese deposition in the basal ganglia and to demonstrate their association with blood manganese levels using ICP/MS technique in HD, peritoneal dialysis (PD), and renal transplant patients...
October 25, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28985209/erratum-elimination-of-large-tumors-in-mice-by-mrna-encoded-bispecific-antibodies
#5
Christiane R Stadler, Hayat Bähr-Mahmud, Leyla Celik, Bernhard Hebich, Alexandra S Roth, René P Roth, Katalin Karikó, Özlem Türeci, Ugur Sahin
This corrects the article DOI: 10.1038/nm.4356.
October 6, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28980709/current-strategies-for-the-management-of-autologous-peripheral-blood-stem-cell-mobilization-failures-in-patients-with-multiple-myeloma
#6
REVIEW
Ugur Sahin, Taner Demirer
Multiple myeloma (MM) is the leading indication of autologous hematopoietic stem cell transplantation (AHSCT) worldwide. The collection of PBSCs is the essential step for AHSCT. The limits for minimum and optimum CD34(+) cells collected have been accepted as 2 × 10(6) /kg and ≥4 × 10(6) /kg for single AHSCT; 4 × 10(6) /kg and ≥8-10 × 10(6) /kg for double AHSCT. Despite the success of conventional methods for PBSC mobilization in MM, mobilization failure is still a concern depending on patient age, duration of disease, and the type of induction therapy...
October 5, 2017: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/28948455/trace-elements-in-blood-samples-of-smoker-and-nonsmoker-active-pulmonary-tuberculosis-patients-from-jamshoro-pakistan
#7
Zainab Manzoor Memon, Erkan Yilmaz, Afsheen Mushtaque Shah, Ugur Sahin, Tasneem Gul Kazi, Bikha Ram Devrajani, Mustafa Soylak
Pulmonary tuberculosis (PTB) is a serious public threat throughout the world. PTB and smoking have a strong correlation. Malnutrition, poverty, addiction, overcrowding, illiteracy, unemployment, and poor hygienic conditions are the collective aspects for the disease progress. Pakistan is the fifth among 22 high tuberculosis (TB) burden countries and the fourth regarding multidrug-resistant tuberculosis (MDR-TB). The aim of study was to determine the concentration of essential and toxic elements from blood samples of smoker and nonsmoker PTB patients by inductively coupled plasma mass spectrometry (ICP-MS) followed by microwave acid digestion and compared with control subjects (n = 30)...
September 26, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28915358/remote-myocardial-injury-the-protective-role-of-fluoxetine
#8
Muhittin Onur Yaman, Ibrahim Guner, Hayriye Erman, Olgu Enis Tok, Mukaddes Pala, Mukaddes Esrefoglu, Remisa Gelisgen, Hafize Uzun, Ugur Aksu, Nermin Yelmen, Emine Gulderen Sahin
Aortic cross-clamping induced ischemia reperfusion (IR) is an important factor in development of postoperative acute cardiac injury following abdominal aortic surgery. We investigated the possible antioxidant/anti-inflammatory effects of fluoxetine (FLX), which used widely as a preoperative anxiolytic, on cardiac injury induced by IR of infrarenal abdominal aorta. FLX was administered to IR (60-min ischemia and 120-min reperfusion) performed rats for 3 days, once daily at 20 mg/kg, i.p. dosage. Results were compared to control and non-FLX treated IR performed rats...
September 15, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28902650/a-rare-cause-of-cyanosis-and-hypoxia-that-should-not-be-forgotten-after-implantable-cardioverter-defibrillator-implantation
#9
Uğur Canpolat, Nihan Bahadır, Levent Şahiner, Kudret Aytemir
Transvenous pacemaker or implantable cardioverter defibrillator (ICD) implantation procedures are usually performed under local anesthetic, and prilocaine is the most common agent to be used. The data regarding methemoglobinemia after cardiac device implantation are scarce. Thus, presently described is the case of a 47-year-old female patient with arrhythmogenic right ventricular cardiomyopathy/dysplasia who underwent ICD implantation for secondary prophylaxis and developed cyanosis as a result of prilocaine-associated methemoglobinemia...
September 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28877647/improvement-of-in-vivo-expression-of-genes-delivered-by-self-amplifying-rna-using-vaccinia-virus-immune-evasion-proteins
#10
Tim Beissert, Lars Koste, Mario Perkovic, Kerstin C Walzer, Stephanie Erbar, Abderaouf Selmi, Mustafa Diken, Sebastian Kreiter, Özlem Türeci, Ugur Sahin
Among nucleic acid based delivery platforms, self-amplifying RNA (saRNA) vectors are of increasing interest for applications such as transient expression of recombinant proteins and vaccination. saRNA is safe and, due to its capability to amplify intracellularly high protein levels, can by produced from even minute amounts of transfected templates. It is an obstacle to full exploitation of this platform, though, that saRNA induces a strong innate host immune response. In transfected cells pattern recognition receptors sense double-stranded RNA intermediates and via activation of protein kinase R (PKR) and interferon signaling initiate host defense measures including a translational shut-down...
September 6, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28807720/comparison-of-the-therapeutic-effects-of-sildenafil-citrate-heparin-and-neuropeptides-in-a-rat-model-of-acetic-acid-induced-gastric-ulcer
#11
COMPARATIVE STUDY
Mehmet Kalayci, Mehmet Ali Kocdor, Tuncay Kuloglu, İbrahim Sahin, Mehmet Sarac, Aziz Aksoy, Meltem Yardim, Semih Dalkilic, Onur Gursu, Suna Aydin, Ramazan Fazil Akkoc, Meltem Ugras, Gokhan Artas, İbrahim Hanifi Ozercan, Kader Ugur, Suleyman Aydin
AIMS: The purpose of our investigative work has been to determine whether there can be therapeutic roles in the administration of sildenafil citrate, heparin and several neuropeptides on an animal model where gastric ulcers were induced with acetic acid, and to compare their efficacy. MATERIALS AND METHODS: The animals were divided into 13 groups, with 4 animals in each. Gastric ulcers was induced in the animals of 12 groups with one untreated group being left as the control (Group I - control; given normal saline (NS))...
October 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28760713/histopathological-comparison-of-bone-healing-effects-of-endonasal-and-percutaneous-lateral-osteotomy-methods-in-rabbit-rhinoplasty-model
#12
Şahin Öğreden, Sedat Rüzgar, Hasan Deniz Tansuker, Ümit Taşkın, Yalcin Alimoglu, Salih Aydın, Mehmet Faruk Oktay, Uğur İzol
INTRODUCTION: Lateral osteotomy is mainly performed either endonasally or percutaneously in rhinoplasty which is a frequently performed operation for the correction of nasal deformities. Both techniques have both advantages and disadvantages relative to each other. OBJECTIVE: The aim of this study was to compare the histopathological effects of endonasal and percutaneous osteotomy techniques performed in rhinoplasty on bone healing and nasal stability in an experimental animal model...
July 17, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28678784/personalized-rna-mutanome-vaccines-mobilize-poly-specific-therapeutic-immunity-against-cancer
#13
Ugur Sahin, Evelyna Derhovanessian, Matthias Miller, Björn-Philipp Kloke, Petra Simon, Martin Löwer, Valesca Bukur, Arbel D Tadmor, Ulrich Luxemburger, Barbara Schrörs, Tana Omokoko, Mathias Vormehr, Christian Albrecht, Anna Paruzynski, Andreas N Kuhn, Janina Buck, Sandra Heesch, Katharina H Schreeb, Felicitas Müller, Inga Ortseifer, Isabel Vogler, Eva Godehardt, Sebastian Attig, Richard Rae, Andrea Breitkreuz, Claudia Tolliver, Martin Suchan, Goran Martic, Alexander Hohberger, Patrick Sorn, Jan Diekmann, Janko Ciesla, Olga Waksmann, Alexandra-Kemmer Brück, Meike Witt, Martina Zillgen, Andree Rothermel, Barbara Kasemann, David Langer, Stefanie Bolte, Mustafa Diken, Sebastian Kreiter, Romina Nemecek, Christoffer Gebhardt, Stephan Grabbe, Christoph Höller, Jochen Utikal, Christoph Huber, Carmen Loquai, Özlem Türeci
T cells directed against mutant neo-epitopes drive cancer immunity. However, spontaneous immune recognition of mutations is inefficient. We recently introduced the concept of individualized mutanome vaccines and implemented an RNA-based poly-neo-epitope approach to mobilize immunity against a spectrum of cancer mutations. Here we report the first-in-human application of this concept in melanoma. We set up a process comprising comprehensive identification of individual mutations, computational prediction of neo-epitopes, and design and manufacturing of a vaccine unique for each patient...
July 13, 2017: Nature
https://www.readbyqxmd.com/read/28657226/factors-associated-with-survival-after-relapse-in-patients-with-low-risk-endometrial-cancer-treated-with-surgery-alone
#14
Nazli Topfedaisi Ozkan, Mehmet Mutlu Meydanlı, Mustafa Erkan Sarı, Fuat Demirkiran, Ilker Kahramanoglu, Tugan Bese, Macit Arvas, Hanifi Şahin, Ali Haberal, Husnu Celik, Gonca Coban, Tufan Oge, Omer Tarik Yalcin, Özgür Akbayır, Baki Erdem, Ceyhun Numanoğlu, Nejat Özgül, Gökhan Boyraz, Mehmet Coşkun Salman, Kunter Yüce, Murat Dede, Mufit Cemal Yenen, Salih Taşkın, Duygu Altın, Uğur Fırat Ortaç, Hülya Aydın Ayık, Tayup Şimşek, Tayfun Güngör, Kemal Güngördük, Muzaffer Sancı, Ali Ayhan
OBJECTIVE: To determine factors influencing overall survival following recurrence (OSFR) in women with low-risk endometrial cancer (EC) treated with surgery alone. METHODS: A multicenter, retrospective department database review was performed to identify patients with recurrent "low-risk EC" (patients having less than 50% myometrial invasion [MMI] with grade 1 or 2 endometrioid EC) at 10 gynecologic oncology centers in Turkey. Demographic, clinicopathological, and survival data were collected...
September 2017: Journal of Gynecologic Oncology
https://www.readbyqxmd.com/read/28604701/elimination-of-large-tumors-in-mice-by-mrna-encoded-bispecific-antibodies
#15
Christiane R Stadler, Hayat Bähr-Mahmud, Leyla Celik, Bernhard Hebich, Alexandra S Roth, René P Roth, Katalin Karikó, Özlem Türeci, Ugur Sahin
The potential of bispecific T cell-engaging antibodies is hindered by manufacturing challenges and short serum half-life. We circumvented these limitations by treating mice with in vitro-transcribed pharmacologically optimized, nucleoside-modified mRNA encoding the antibody. We achieved sustained endogenous synthesis of the antibody, which eliminated advanced tumors as effectively as the corresponding purified bispecific antibody. Because manufacturing of pharmaceutical mRNA is fast, this approach could accelerate the clinical development of novel bispecific antibodies...
July 2017: Nature Medicine
https://www.readbyqxmd.com/read/28541637/prognostic-factors-and-treatment-outcomes-in-surgically-staged-non-invasive-uterine-clear-cell-carcinoma-a-turkish-gynecologic-oncology-group-study
#16
Mustafa Erkan Sarı, Mehmet Mutlu Meydanlı, Osman Türkmen, Günsü Kimyon Cömert, Ahmet Taner Turan, Alper Karalök, Hanifi Şahin, Ali Haberal, Eda Kocaman, Özgür Akbayır, Baki Erdem, Ceyhun Numanoğlu, Kemal Güngördük, Muzaffer Sancı, Mehmet Gökçü, Nejat Özgül, Mehmet Coşkun Salman, Gökhan Boyraz, Kunter Yüce, Tayfun Güngör, Salih Taşkın, Duygun Altın, Uğur Fırat Ortaç, Hülya Aydın Ayık, Tayup Şimşek, Macit Arvas, Ali Ayhan
OBJECTIVE: To assess the prognosis of surgically-staged non-invasive uterine clear cell carcinoma (UCCC), and to determine the role of adjuvant therapy. METHODS: A multicenter, retrospective department database review was performed to identify patients with UCCC who underwent surgical treatment between 1997 and 2016 at 8 Gynecologic Oncology Centers. Demographic, clinicopathological, and survival data were collected. RESULTS: A total of 232 women with UCCC were identified...
July 2017: Journal of Gynecologic Oncology
https://www.readbyqxmd.com/read/28534349/an-overview-of-high-dose-chemotherapy-with-autologous-stem-cell-rescue-for-germ-cell-tumors-in-current-practice
#17
Sukru Ozaydın, Ugur Sahin, Nuri Karadurmus, Fikret Arpaci, Taner Demirer
Testicular cancer is a frequent tumor of adolescent and young adult males. Chemotherapy has been reported to provide cure rates as high as 80% even in the presence of advanced testicular cancer. Studies regarding testicular cancer started after the advent of high dose chemotherapy (HDC) plus atologous stem cell rescue (ASCR) for the treatment of solid tumors in 1980s. Testicular cancer is highly responsive to HDC. Einhorn et al. have reported long-lasting remissions reaching up to 40% among patients with platinum-refractory disease...
March 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28490348/an-international-reproducibility-study-validating-quantitative-determination-of-erbb2-esr1-pgr-and-mki67-mrna-in-breast-cancer-using-mammatyper%C3%A2
#18
Zsuzsanna Varga, Annette Lebeau, Hong Bu, Arndt Hartmann, Frederique Penault-Llorca, Elena Guerini-Rocco, Peter Schraml, Fraser Symmans, Robert Stoehr, Xiaodong Teng, Andreas Turzynski, Reinhard von Wasielewski, Claudia Gürtler, Mark Laible, Kornelia Schlombs, Heikki Joensuu, Thomas Keller, Peter Sinn, Ugur Sahin, John Bartlett, Giuseppe Viale
BACKGROUND: Accurate determination of the predictive markers human epidermal growth factor receptor 2 (HER2/ERBB2), estrogen receptor (ER/ESR1), progesterone receptor (PgR/PGR), and marker of proliferation Ki67 (MKI67) is indispensable for therapeutic decision making in early breast cancer. In this multicenter prospective study, we addressed the issue of inter- and intrasite reproducibility using the recently developed reverse transcription-quantitative real-time polymerase chain reaction-based MammaTyper® test...
May 11, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28432802/subsequent-malignancies-after-allogeneic-hematopoietic-stem-cell-transplantation
#19
Mehmet Gündüz, Mehmet Özen, Uğur Şahin, Selami Koçak Toprak, Sinem Civriz Bozdağ, Meltem Kurt Yüksel, Önder Arslan, Muhit Özcan, Taner Demirer, Meral Beksaç, Osman İlhan, Günhan Gürman, Pervin Topçuoğlu
We evaluated 979 patients for the development of post-transplant lymphoproliferative disease (PTLD) and solid malignancies after allogeneic hematopoietic stem cell transplantations (allo-HSCT) as a late complication. We found 15 (1.5%) subsequent malignancies; three of these malignancies were PTLD, and twelve were solid tumors. The median time from allo-HSCT to the development of PTLD was 9 (3-20) months and that from allo-HSCT to the development of solid tumors was 93 (6-316) months. The cumulative incidence of evolving subsequent malignancy in patients was 1...
April 22, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28416942/the-end-of-a-long-debate-methylenetetrahydrofolate-reductase-gene-polymorphisms-do-not-increase-thrombosis-risk
#20
Ugur Sahin, Muhit Ozcan
No abstract text is available yet for this article.
February 2017: Eurasian Journal of Medicine
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