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Behroozi Kohlan T, Atespare AE, Yildiz M, Menceloglu YZ, Unal S, Dizman B. Amphiphilic Polyoxazoline Copolymer-Imidazole Complexes as Tailorable Thermal Latent Curing Agents for One-Component Epoxy Resins. ACS Omega 2023; 8:47173-47186. [PMID: 38107921 PMCID: PMC10720278 DOI: 10.1021/acsomega.3c07177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/29/2023] [Accepted: 11/16/2023] [Indexed: 12/19/2023]
Abstract
One-component epoxy resins (OCERs) are proposed to overcome the energy inefficiency and processing difficulties of conventional two-component epoxy resins by employing latent curing agents, specifically thermal latent curing agents (TLCs). Despite recent progress, the need for TLCs with a simple preparation method for different curing agents, epoxy resins, and process conditions remains. Here, tailorable TLCs were prepared by forming complexes between imidazole (Im) and amphiphilic polyoxazoline copolymers with tunable structures and properties by a solvent evaporation method. The obtained TLCs were manually mixed with DGEBA to prepare OCERs. The miscibility of the complexes with DGEBA was studied, considering the functionalities of copolymers. The curing behaviors of TLCs were compared using dynamic Differential Scanning Calorimetry (DSC) studies considering the side chain and composition of the copolymers, copolymer:Im ratio, and concentration of Im in DGEBA. The curing behavior of the promising OCERs was studied by isothermal DSC studies to investigate their stability at different temperatures and curing rate at elevated temperatures revealing the stability of these OCERs.
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Affiliation(s)
- Taha Behroozi Kohlan
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Asu Ece Atespare
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Mehmet Yildiz
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Yusuf Ziya Menceloglu
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Serkan Unal
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Bekir Dizman
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
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2
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Dickhoff C, Unal S, Heineman DJ, Winkelman JA, Braun J, Bahce I, van Dorp M, Senan S, Dahele M. Feasibility of salvage resection following locoregional failure after chemoradiotherapy and consolidation durvalumab for unresectable stage III non-small cell lung cancer. Lung Cancer 2023; 182:107294. [PMID: 37442060 DOI: 10.1016/j.lungcan.2023.107294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 05/05/2023] [Accepted: 07/08/2023] [Indexed: 07/15/2023]
Abstract
INTRODUCTION In patients with unresectable stage III non-small cell lung cancer, high-dose chemoradiotherapy (CRT) followed by consolidation durvalumab improves the 5-year overall survival compared to CRT alone. The feasibility and safety of salvage surgery for such patients who subsequently develop locoregional failure (LRF) is unclear. We evaluated our institutional experience with radical-intent salvage surgery in this patient population. MATERIALS AND METHODS Details of patients undergoing salvage surgery for locoregional failure after CRT and durvalumab were identified from an institutional surgical database. Each patient's case underwent multidisciplinary discussion at initial disease presentation, and again at time of progression. RESULTS Ten patients underwent salvage surgery for LRF after prior concurrent (n = 9) or sequential (n = 1) platinum-based high-dose chemo-radiotherapy followed by durvalumab. Consolidation durvalumab was completed in 4 patients, and discontinued in 6, due to either toxicity or disease progression. Median time between end of radiotherapy to detection of LRF was 19 months (range 6-75). Seven patients underwent a lobectomy, 1 a bilobectomy and 2 patients a pneumonectomy. Postoperative morbidity (Clavien-Dindo grade III-V) and 90-day mortality were 10% and 0%, respectively. Median follow-up after surgery was 7 months (range 1-25) during which 2 patients died (both 9 months post-operatively), one due to distant progression, and one of sepsis/bleeding. Eight patients are alive at 1-23 months post-surgery, with 6 showing no evidence of disease. CONCLUSIONS Our results suggest that salvage pulmonary resection can be performed safely in selected patients with LRF following chemoradiotherapy and durvalumab. This radical-intent treatment option merits consideration by multidisciplinary lung tumor boards.
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Affiliation(s)
- C Dickhoff
- Department of Cardiothoracic Surgery, Amsterdam UMC Location Vrije Universiteit Amsterdam, Boelelaan 1117, Amsterdam, The Netherlands; Cancer Center Amsterdam, Cancer Treatment and Quality of Life, Amsterdam, The Netherlands.
| | - S Unal
- Department of Cardiothoracic Surgery, Amsterdam UMC Location Vrije Universiteit Amsterdam, Boelelaan 1117, Amsterdam, The Netherlands; Cancer Center Amsterdam, Cancer Treatment and Quality of Life, Amsterdam, The Netherlands
| | - D J Heineman
- Department of Cardiothoracic Surgery, Amsterdam UMC Location Vrije Universiteit Amsterdam, Boelelaan 1117, Amsterdam, The Netherlands; Cancer Center Amsterdam, Cancer Treatment and Quality of Life, Amsterdam, The Netherlands
| | - J A Winkelman
- Department of Cardiothoracic Surgery, Amsterdam UMC Location Vrije Universiteit Amsterdam, Boelelaan 1117, Amsterdam, The Netherlands; Cancer Center Amsterdam, Cancer Treatment and Quality of Life, Amsterdam, The Netherlands
| | - J Braun
- Department of Cardiothoracic Surgery, Amsterdam UMC Location Vrije Universiteit Amsterdam, Boelelaan 1117, Amsterdam, The Netherlands; Department of Cardiothoracic Surgery, Leiden University Medical Center, Albinusdreef 2, Leiden, The Netherlands
| | - I Bahce
- Department of Pulmonary Medicine, Amsterdam UMC Location Vrije Universiteit Amsterdam, Boelelaan 1117, Amsterdam, The Netherlands; Cancer Center Amsterdam, Cancer Treatment and Quality of Life, Amsterdam, The Netherlands
| | - M van Dorp
- Department of Cardiothoracic Surgery, Amsterdam UMC Location Vrije Universiteit Amsterdam, Boelelaan 1117, Amsterdam, The Netherlands; Cancer Center Amsterdam, Cancer Treatment and Quality of Life, Amsterdam, The Netherlands
| | - S Senan
- Department of Radiation Oncology, Amsterdam UMC Location Vrije Universiteit Amsterdam, Boelelaan 1117, Amsterdam, The Netherlands; Cancer Center Amsterdam, Cancer Treatment and Quality of Life, Amsterdam, The Netherlands
| | - M Dahele
- Department of Radiation Oncology, Amsterdam UMC Location Vrije Universiteit Amsterdam, Boelelaan 1117, Amsterdam, The Netherlands; Cancer Center Amsterdam, Cancer Treatment and Quality of Life, Amsterdam, The Netherlands
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Geduk A, Oztas B, Eryılmaz BH, Demirsoy ET, Menguc MU, Unal S, Mersin S, Polat MG, Aygun K, Yenihayat EM, Albayrak H, Erol HA, Balcı S, Mehtap O, Tarkun P, Hacihanefioglu A. Correction to: Efects of AGEs, sRAGE and HMGB1 on Clinical Outcomes in Multiple Myeloma. Indian J Hematol Blood Transfus 2023; 39:518. [PMID: 37304480 PMCID: PMC10247911 DOI: 10.1007/s12288-023-01626-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
[This corrects the article DOI: 10.1007/s12288-022-01574-6.].
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Affiliation(s)
- Ayfer Geduk
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 UmuttepeKocaeli, Turkey
| | - Berrin Oztas
- Department of Biochemistry, Medical Faculty, Kocaeli University, Kocaeli, Turkey
| | - Baldan Huri Eryılmaz
- Department of İnternal Medicine, Medical Faculty, Kocaeli University, Kocaeli, Turkey
| | - Esra Terzi Demirsoy
- Department of Hematology, Derince Training and Research Hospital, Health Sciences University, Kocaeli, Turkey
| | - Meral U. Menguc
- Department of Hematology, Medical Faculty, Bolu Abant İzzet Baysal University, Bolu, Turkey
| | - Serkan Unal
- Department of Hematology, Kastamonu Training and Research Hospital, Kastamonu, Turkey
| | - Sinan Mersin
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 UmuttepeKocaeli, Turkey
| | - Merve Gokcen Polat
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 UmuttepeKocaeli, Turkey
| | - Kemal Aygun
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 UmuttepeKocaeli, Turkey
| | - Emel Merve Yenihayat
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 UmuttepeKocaeli, Turkey
| | - Hayrunnisa Albayrak
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 UmuttepeKocaeli, Turkey
| | - Hasim Atakan Erol
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 UmuttepeKocaeli, Turkey
| | - Sibel Balcı
- Department of Biostatistics and Medical Informatics, Medical Faculty, Kocaeli University, Kocaeli, Turkey
| | - Ozgur Mehtap
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 UmuttepeKocaeli, Turkey
| | - Pinar Tarkun
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 UmuttepeKocaeli, Turkey
| | - Abdullah Hacihanefioglu
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 UmuttepeKocaeli, Turkey
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Ivanoska-Dacikj A, Oguz-Gouillart Y, Hossain G, Kaplan M, Sivri Ç, Ros-Lis JV, Mikucioniene D, Munir MU, Kizildag N, Unal S, Safarik I, Akgül E, Yıldırım N, Bedeloğlu AÇ, Ünsal ÖF, Herwig G, Rossi RM, Wick P, Clement P, Sarac AS. Advanced and Smart Textiles during and after the COVID-19 Pandemic: Issues, Challenges, and Innovations. Healthcare (Basel) 2023; 11:healthcare11081115. [PMID: 37107948 PMCID: PMC10137734 DOI: 10.3390/healthcare11081115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/28/2023] [Accepted: 04/02/2023] [Indexed: 04/29/2023] Open
Abstract
The COVID-19 pandemic has hugely affected the textile and apparel industry. Besides the negative impact due to supply chain disruptions, drop in demand, liquidity problems, and overstocking, this pandemic was found to be a window of opportunity since it accelerated the ongoing digitalization trends and the use of functional materials in the textile industry. This review paper covers the development of smart and advanced textiles that emerged as a response to the outbreak of SARS-CoV-2. We extensively cover the advancements in developing smart textiles that enable monitoring and sensing through electrospun nanofibers and nanogenerators. Additionally, we focus on improving medical textiles mainly through enhanced antiviral capabilities, which play a crucial role in pandemic prevention, protection, and control. We summarize the challenges that arise from personal protective equipment (PPE) disposal and finally give an overview of new smart textile-based products that emerged in the markets related to the control and spread reduction of SARS-CoV-2.
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Affiliation(s)
- Aleksandra Ivanoska-Dacikj
- Research Centre for Environment and Materials, Macedonian Academy of Sciences and Arts, Krste Misirkov 2, 1000 Skopje, North Macedonia
| | - Yesim Oguz-Gouillart
- Department of Building and Urban Environment, Innovative Textile Material, JUNIA, 59000 Lille, France
| | - Gaffar Hossain
- V-Trion GmbH Textile Research, Millennium Park 15, 6890 Lustenau, Austria
| | - Müslüm Kaplan
- Department of Textile Engineering, Faculty of Engineering, Architecture and Design, Bartin University, Bartin 74110, Turkey
| | - Çağlar Sivri
- Management Engineering Department, Faculty of Engineering and Natural Sciences, Bahcesehir University, İstanbul 34349, Turkey
| | - José Vicente Ros-Lis
- Centro de Reconocimiento Molecular y Desarrollo Tecnologico (IDM), Unidad Mixta Universitat Politecnica de Valencia, Universitat de Valencia, Departamento de Química Inorgánica, Universitat de València, Doctor Moliner 56, 46100 Valencia, Spain
| | - Daiva Mikucioniene
- Faculty of Mechanical Engineering and Design, Kaunas University of Technology, Studentu Str. 56, 50404 Kaunas, Lithuania
| | - Muhammad Usman Munir
- Faculty of Mechanical Engineering and Design, Kaunas University of Technology, Studentu Str. 56, 50404 Kaunas, Lithuania
| | - Nuray Kizildag
- Institute of Nanotechnology, Gebze Technical University, Gebze, Kocaeli 41400, Turkey
- Integrated Manufacturing Technologies Research and Application Center, Sabanci University, Pendik, Istanbul 34906, Turkey
| | - Serkan Unal
- Integrated Manufacturing Technologies Research and Application Center, Sabanci University, Pendik, Istanbul 34906, Turkey
- Faculty of Engineering and Natural Sciences, Material Science and Nanoengineering, Sabanci University, Tuzla, Istanbul 34956, Turkey
| | - Ivo Safarik
- Department of Nanobiotechnology, Biology Centre, ISBB, CAS, Na Sadkach 7, 370 05 Ceske Budejovice, Czech Republic
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacky University, Slechtitelu 27, 783 71 Olomouc, Czech Republic
| | - Esra Akgül
- Department of Industrial Design Engineering, Faculty of Engineering, Erciyes University, Kayseri 38039, Turkey
| | - Nida Yıldırım
- Trabzon Vocational School, Karadeniz Technical University, Trabzon 61080, Turkey
| | - Ayşe Çelik Bedeloğlu
- Department of Polymer Materials Engineering, Faculty of Engineering and Natural Sciences, Bursa Technical University, Bursa 16310, Turkey
| | - Ömer Faruk Ünsal
- Department of Polymer Materials Engineering, Faculty of Engineering and Natural Sciences, Bursa Technical University, Bursa 16310, Turkey
| | - Gordon Herwig
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, 9014 St. Gallen, Switzerland
| | - René M Rossi
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Biomimetic Membranes and Textiles, 9014 St. Gallen, Switzerland
| | - Peter Wick
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Particle-Biology Interactions, 9014 St. Gallen, Switzerland
| | - Pietro Clement
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Particle-Biology Interactions, 9014 St. Gallen, Switzerland
| | - A Sezai Sarac
- Department of Chemistry, Polymer Science and Technology, Faculty of Sciences and Letters, Istanbul Technical University, Istanbul 34469, Turkey
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Geduk¹ A, Oztas B, Eryılmaz BH, Demirsoy ET, Menguc MU, Unal S, Mersin S, Polat MG, Aygun K, Yenihayat EM, Albayrak H, Erol HA, Balcı S, Mehtap¹ O, Tarkun¹ P, Hacihanefioglu¹ A. Effects of AGEs, sRAGE and HMGB1 on Clinical Outcomes in Multiple Myeloma. Indian J Hematol Blood Transfus 2023; 39:220-227. [PMID: 37006982 PMCID: PMC10064350 DOI: 10.1007/s12288-022-01574-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 08/31/2022] [Indexed: 11/07/2022] Open
Abstract
Purpose The receptor for advanced glycation end products (RAGE) upregulated during the onset and progression of cancer and bone-related pathologies. In this study, we aimed to investigate the role of serum advanced glycation end products (AGEs), soluble RAGE (sRAGE) and high mobility group box 1 (HMGB1), in multiple myeloma (MM). Methods AGEs, sRAGE and HMGB1 concentrations of 54 newly diagnosed MM patients and 30 healthy volunteers were measured by ELISA. The estimations were done only once at diagnosis. The medical records of the patients were evaluated. Results There was no significant difference between the AGEs and sRAGE levels between the patient and control groups (p = 0.273, p = 0.313). In ROC analysis, a HMGB1 cutoff value of > 9170 pg/ml accurately discriminated MM patients (AUC = 0.672, 95% CI 0.561-0.77, p = 0.0034). AGEs level was found to be significantly higher in early-stage disease and HMGB1 in advanced disease (p = 0.022, p = 0.026). High HMGB1 levels were detected in patients whose with better first-line treatment response (p = 0.019). At 36 months, 54% of patients with low AGE were alive, compared to 79% of patients with high AGE (p = 0.055). Patients with high HMGB1 levels tended to have a longer PFS (median 43 mo [95% CI; 20.68-65.31] ) compared to patients with low HMGB1 levels (median 25 mo [95% CI; 12.39-37.6], p = 0.054). Conclusion In this study, a significant elevation of serum HMGB1 level was found in MM patients. In addition, the positive effects of RAGE ligands on treatment response and prognosis were determined.
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Affiliation(s)
- Ayfer Geduk¹
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 Umuttepe, Kocaeli, Turkey
| | - Berrin Oztas
- Department of Biochemistry, Medical Faculty, Kocaeli University, Kocaeli, Turkey
| | - Baldan Huri Eryılmaz
- Department of İnternal Medicine, Medical Faculty, Kocaeli University, Kocaeli, Turkey
| | - Esra Terzi Demirsoy
- Department of Hematology, Derince Training and Research Hospital, Health Sciences University, Kocaeli, Turkey
| | - Meral U. Menguc
- Department of Hematology, Medical Faculty, Bolu Abant İzzet Baysal University, Bolu, Turkey
| | - Serkan Unal
- Department of Hematology, Kastamonu Training and Research Hospital, Kastamonu, Turkey
| | - Sinan Mersin
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 Umuttepe, Kocaeli, Turkey
| | - Merve Gokcen Polat
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 Umuttepe, Kocaeli, Turkey
| | - Kemal Aygun
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 Umuttepe, Kocaeli, Turkey
| | - Emel Merve Yenihayat
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 Umuttepe, Kocaeli, Turkey
| | - Hayrunnisa Albayrak
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 Umuttepe, Kocaeli, Turkey
| | - Hasim Atakan Erol
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 Umuttepe, Kocaeli, Turkey
| | - Sibel Balcı
- Department of Biostatistics and Medical Informatics, Medical Faculty, Kocaeli University, Kocaeli, Turkey
| | - Ozgur Mehtap¹
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 Umuttepe, Kocaeli, Turkey
| | - Pinar Tarkun¹
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 Umuttepe, Kocaeli, Turkey
| | - Abdullah Hacihanefioglu¹
- Department of Hematology, Medical Faculty, Kocaeli University, 11.km, 41380 Umuttepe, Kocaeli, Turkey
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Keskin B, Korkut S, Ormancı-Acar T, Turken T, Tas CE, Menceloglu YZ, Unal S, Koyuncu I. Pilot scale nanofiltration membrane fabrication containing ionic co-monomers and halloysite nanotubes for textile dye filtration. Water Sci Technol 2023; 87:1529-1541. [PMID: 37001163 DOI: 10.2166/wst.2023.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Wastewater from the textile industry contains high concentrations of pollutants, so the wastewater must be treated before it is discharged. In addition, the reuse of treated wastewater should be considered from an environmental point of view, as large volumes of wastewater are produced. Since textile wastewater mainly contains dyestuffs, it must be treated effectively using environmentally friendly technologies. Membrane processes are widely used in textile wastewater treatment as they have distinct advantages over conventional wastewater treatment methods. This study reports the pilot-scale manufacturing and characterization of three different NF membranes. Three different types of membranes were fabricated. The fabricated membranes were compared through characterization by surface properties, chemical structure and morphology. Membranes were tested for pure water flux. Then the synthetic wastewater (SWW) was tested for flux and rejection. Lastly, the textile wastewater was tested. The textile wastewater flux of pure piperazine (PIP), 60% S-DADPS and 0.04% halloysite nanotubes (HNTs) were 22.42, 79.58 and 40.06 L m-2 h-1. It has been proven that the 60% s-DADPS membrane provides up to four times improvement in wastewater flux and simultaneously. In addition, NF membranes produced using HNT and sDADPS on a pilot scale have brought innovation to the literature with the good results obtained.
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Affiliation(s)
- Başak Keskin
- Environmental Engineering Department, Istanbul Technical University, Maslak, Istanbul 34469, Turkey E-mail: ; National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, Istanbul 34469, Turkey
| | - Sevde Korkut
- Environmental Engineering Department, Istanbul Technical University, Maslak, Istanbul 34469, Turkey E-mail: ; National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, Istanbul 34469, Turkey
| | - Türkan Ormancı-Acar
- Department of Environmental Engineering, Faculty of Engineering, Istanbul University-Cerrahpaşa, İstanbul, Turkey
| | - Turker Turken
- Environmental Engineering Department, Istanbul Technical University, Maslak, Istanbul 34469, Turkey E-mail: ; National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, Istanbul 34469, Turkey
| | - Cuneyt Erdinc Tas
- Faculty of Engineering and Natural Sciences, Material Science and Nanoengineering, Sabancı University, Istanbul, Turkey
| | - Yusuf Z Menceloglu
- Faculty of Engineering and Natural Sciences, Material Science and Nanoengineering, Sabancı University, Istanbul, Turkey; Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Sabancı University, Istanbul, Turkey
| | - Serkan Unal
- Faculty of Engineering and Natural Sciences, Material Science and Nanoengineering, Sabancı University, Istanbul, Turkey; Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Sabancı University, Istanbul, Turkey
| | - Ismail Koyuncu
- Environmental Engineering Department, Istanbul Technical University, Maslak, Istanbul 34469, Turkey E-mail: ; National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, Istanbul 34469, Turkey
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Kohlan TB, Atespare AE, Yildiz M, Menceloglu YZ, Unal S, Dizman B. Synthesis and Structure-Property Relationship of Amphiphilic Poly(2-ethyl- co-2-(alkyl/aryl)-2-oxazoline) Copolymers. ACS Omega 2022; 7:40067-40077. [PMID: 36385860 PMCID: PMC9648074 DOI: 10.1021/acsomega.2c04809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
Poly(2-oxazoline)s (POZs) are widely investigated for their applications in various fields due to their unique properties. To exploit and combine different characteristics of the POZ family, 2-oxazoline monomers can be copolymerized to prepare tailor-made copolymers with the desired glass transition temperature (T g), melting temperature (T m), amphiphilicity, and functionality. Here, we report the synthesis and characterization of 2-oxazoline monomers and a range of POZ copolymers produced, thereof. 2-Propyl-2-oxazoline (PrOZ) and 2-pentyl-2-oxazoline (PeOZ) monomers were synthesized by two different methods starting from nitriles or carboxylic acids. A number of POZ copolymers were synthesized by copolymerization of 2-ethyl-2-oxazoline (EOZ) with either one of PrOZ, PeOZ, or 2-phenyl-2-oxazoline (PhOZ) at three different compositions (25:75, 50:50, and 75:25) and three molecular weights (1000, 2000, and 5000 Da). The successful synthesis of the monomers and copolymers was demonstrated through their structural analysis by 1H NMR and FTIR. SEC results confirmed the targeted molar masses of the copolymers and living nature of the polymerization by showing low dispersity values. Thermal properties of the copolymers were studied using DSC and TGA. DSC studies revealed the amorph and random state of the copolymers with obtained T g values for the copolymers in the range of -3 to 84 °C depending on their molecular weight and type of the side chain. While the presence of longer aliphatic side chains resulted in lower T g values, the presence of 2-phenyl substituents on the polymer led to higher T g values. The decomposition temperatures determined by TGA were in the range of 328 to 383 °C depending on the molecular weight, composition, and side chain of the copolymers. It was observed that higher molecular weights led to higher T g values and decomposition temperatures. While copolymers with aliphatic side chains exhibited a single-step decomposition profile, the decomposition of copolymers having aromatic side chains occurred in multiple steps. The variations in the molecular weight, composition, and side chains of the copolymers resulted in a library of tailorable amphiphilic copolymers suitable for multiple applications ranging from biomedical applications to composite manufacturing.
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Affiliation(s)
- Taha Behroozi Kohlan
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Asu Ece Atespare
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Mehmet Yildiz
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Yusuf Ziya Menceloglu
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Serkan Unal
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
| | - Bekir Dizman
- Integrated
Manufacturing Technologies Research and Application Center & Composite
Technologies Center of Excellence, Sabanci
University, Istanbul 34956, Turkey
- Faculty
of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, Istanbul 34956, Turkey
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Guven D, Gulbahce Incesu F, Yildirim H, Erul E, Chalabiyev E, Aktas B, Yuce D, Arik Z, Kilickap S, Aksoy S, Erman M, Hayran K, Unal S, Alp A, Dizdar O. 1612P Immunogenicity of two doses of inactive COVID-19 vaccine and third booster dose mRNA vaccine in patients with cancer receiving active systemic therapy. Ann Oncol 2022. [PMCID: PMC9472463 DOI: 10.1016/j.annonc.2022.07.1705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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9
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Sahin ZM, Kohlan TB, Atespare AE, Yildiz M, Unal S, Dizman B. Polyoxazoline‐modified
graphene oxides with improved water and epoxy resin dispersibility and stability towards composite applications. J Appl Polym Sci 2022. [DOI: 10.1002/app.52406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Zeynep Munteha Sahin
- Sabanci University Integrated Manufacturing Technologies Center of Excellence Sabanci University Istanbul Turkey
- Composite Technologies Center of Excellence, Istanbul Technology Development Zone Sabanci University‐Kordsa Istanbul Turkey
| | - Taha Behroozi Kohlan
- Sabanci University Integrated Manufacturing Technologies Center of Excellence Sabanci University Istanbul Turkey
- Composite Technologies Center of Excellence, Istanbul Technology Development Zone Sabanci University‐Kordsa Istanbul Turkey
- Faculty of Engineering and Natural Sciences Sabanci University Istanbul Turkey
| | - Asu Ece Atespare
- Sabanci University Integrated Manufacturing Technologies Center of Excellence Sabanci University Istanbul Turkey
- Composite Technologies Center of Excellence, Istanbul Technology Development Zone Sabanci University‐Kordsa Istanbul Turkey
- Faculty of Engineering and Natural Sciences Sabanci University Istanbul Turkey
| | - Mehmet Yildiz
- Sabanci University Integrated Manufacturing Technologies Center of Excellence Sabanci University Istanbul Turkey
- Composite Technologies Center of Excellence, Istanbul Technology Development Zone Sabanci University‐Kordsa Istanbul Turkey
- Faculty of Engineering and Natural Sciences Sabanci University Istanbul Turkey
| | - Serkan Unal
- Sabanci University Integrated Manufacturing Technologies Center of Excellence Sabanci University Istanbul Turkey
- Composite Technologies Center of Excellence, Istanbul Technology Development Zone Sabanci University‐Kordsa Istanbul Turkey
- Faculty of Engineering and Natural Sciences Sabanci University Istanbul Turkey
| | - Bekir Dizman
- Sabanci University Integrated Manufacturing Technologies Center of Excellence Sabanci University Istanbul Turkey
- Composite Technologies Center of Excellence, Istanbul Technology Development Zone Sabanci University‐Kordsa Istanbul Turkey
- Faculty of Engineering and Natural Sciences Sabanci University Istanbul Turkey
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10
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Dinc Asarcikli L, Sert S, Can F, Osken A, Unal S. The effect of urgent blood pressure lowering on left atrial mechanics in patients with hypertensive episode in emergency setting. Eur Heart J Cardiovasc Imaging 2022. [DOI: 10.1093/ehjci/jeab289.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Left atrial (LA) dilatation and dysfunction are early manifestation of hypertension and represent end-organ damage. Hypertension is a well-known risk factor for atrial fibrillation. Long term effect of hypertension on the left ventricle and left atrium was well-studied before. In this study, we aimed to investigate the acute effect of urgent blood pressure reduction on the left atrial strain.
Methods
We prospectively enrolled 52 consecutive patients (age: 67.5 ± 8.9 years, 48.1% male) (Fig1) admitted to our emergency department with a hypertensive attack. All patients underwent baseline standard echocardiographic evaluation. 2D images from apical 4-chamber view were recorded for offline analysis. Reservoir (PALS) and contractile (PACS) left atrial strain measurements were performed by automated software using the onset of QRS as a reference point. Patients with systolic dysfunction, acute coronary syndrome and any rhythym other than sinus or with poor echogeneicity were excluded. All measurements were repeated after achieving target blood pressure reduction and analyzed.
Results
Urgent blood pressure reduction result in improvement in LA contractile strain (PACS) and LVEF and increase in heart rate and RV systolic function while LV dimensions, LA volumes and LAVI were decreased. There is a statistically significant negative moderate relationship between absolute change of DBP and absolute change of PALS (r=-0.423; p = 0.002). There is a statistically significant negative and weak correlation between the absolute change in SBP and the absolute change in PACS (r=-0.280; p = 0.044).
Conclusion
Assessment of LA strain by 2D speckle tracking echocardiography is easy to apply and noninasive method to quantify LA function even in emergency setting. This study showed that LA contractile strain (PACS) rather than LA reservoir strain (PALS) was significantly affected from LV end diastolic pressure. Abstract Figure 1 Abstract Figure 2
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Affiliation(s)
- L Dinc Asarcikli
- Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Istanbul, Turkey
| | - S Sert
- Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Istanbul, Turkey
| | - F Can
- Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Istanbul, Turkey
| | - A Osken
- Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Istanbul, Turkey
| | - S Unal
- Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Center, Istanbul, Turkey
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11
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Sharabati JAD, Erkoc-Ilter S, Guclu S, Koseoglu-Imer D, Unal S, Menceloglu Y, Ozturk I, Koyuncu I. Zwitterionic polysiloxane-polyamide hybrid active layer for high performance and chlorine resistant TFC desalination membranes. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.119965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Ormanci‐Acar T, Keskin B, Korkut S, Mutlu‐Salmanlı O, Turken T, Koseoglu‐Imer DY, Demir TU, Menceloglu YZ, Unal S, Koyuncu I. Fabrication of halloysite nanotubes embedded thin film nanocomposite membranes for dye removal. J Appl Polym Sci 2021. [DOI: 10.1002/app.50986] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Turkan Ormanci‐Acar
- Department of Environmental Engineering, Faculty of Engineering Istanbul University‐Cerrahpaşa İstanbul Turkey
- National Research Center on Membrane Technologies Istanbul Technical University Istanbul Turkey
| | - Basak Keskin
- National Research Center on Membrane Technologies Istanbul Technical University Istanbul Turkey
- Environmental Engineering Department Istanbul Technical University Istanbul Turkey
| | - Sevde Korkut
- National Research Center on Membrane Technologies Istanbul Technical University Istanbul Turkey
- Environmental Engineering Department Istanbul Technical University Istanbul Turkey
| | - Oyku Mutlu‐Salmanlı
- National Research Center on Membrane Technologies Istanbul Technical University Istanbul Turkey
- Environmental Engineering Department Istanbul Technical University Istanbul Turkey
| | - Turker Turken
- National Research Center on Membrane Technologies Istanbul Technical University Istanbul Turkey
- Environmental Engineering Department Istanbul Technical University Istanbul Turkey
| | - Derya Y. Koseoglu‐Imer
- National Research Center on Membrane Technologies Istanbul Technical University Istanbul Turkey
- Environmental Engineering Department Istanbul Technical University Istanbul Turkey
| | - Tugba U. Demir
- ESAN Eczacibasi Industrial Raw Materials Istanbul Turkey
| | - Yusuf Z. Menceloglu
- Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence Sabanci University Istanbul Turkey
- Nanotechnology Research and Application Center Sabanci University Istanbul Turkey
- Department of Materials Science and Nanoengineering, Faculty of Engineering and Natural Science Sabanci University Istanbul Turkey
| | - Serkan Unal
- Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence Sabanci University Istanbul Turkey
- Nanotechnology Research and Application Center Sabanci University Istanbul Turkey
| | - Ismail Koyuncu
- National Research Center on Membrane Technologies Istanbul Technical University Istanbul Turkey
- Environmental Engineering Department Istanbul Technical University Istanbul Turkey
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13
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Tas CE, Berksun E, Koken D, Kolgesiz S, Unal S, Unal H. Waterborne Polydopamine-Polyurethane/Polyethylene Glycol-Based Phase Change Films for Solar-to-Thermal Energy Conversion and Storage. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cuneyt Erdinc Tas
- Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
- Sabanci University SUNUM Nanotechnology Research Center, Istanbul 34956, Turkey
| | - Ekin Berksun
- Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
| | - Deniz Koken
- Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
| | - Sarp Kolgesiz
- Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
| | - Serkan Unal
- Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey
- Manufacturing Technologies Research and Application Center, Sabanci University, Istanbul 34956, Turkey
| | - Hayriye Unal
- Sabanci University SUNUM Nanotechnology Research Center, Istanbul 34956, Turkey
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14
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Erdinc FS, Dokuzoguz B, Unal S, Komur S, Inkaya AC, Inan D, Karaoglan I, Deveci A, Celen MK, Kose S, Erben N, Senturk GC, Heper Y, Kutlu SS, Hatipoglu CA, Sumer S, Kandemir B, Sirmatel F, Bayindir Y, Yilmaz E, Ersoy Y, Kazak E, Yildirmak MT, Kayaaslan B, Ozden K, Sener A, Kara A, Gunal O, Birengel S, Akbulut A, Yetkin F, Cuvalci NO, Sargin F, Pullukcu H, Gokengin D, Multicentric Hiv Study Group. Temporal Trends in the Epidemiology of HIV in Turkey. Curr HIV Res 2021; 18:258-266. [PMID: 32342820 DOI: 10.2174/1570162x18666200427223823] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 04/03/2020] [Accepted: 04/14/2020] [Indexed: 01/07/2023]
Abstract
OBJECTIVE The aim of this study was to analyze the temporal trends of HIV epidemiology in Turkey from 2011 to 2016. METHODS Thirty-four teams from 28 centers at 17 different cities participated in this retrospective study. Participating centers were asked to complete a structured form containing questions about epidemiologic, demographic and clinical characteristics of patients presented with new HIV diagnosis between 2011 and 2016. Demographic data from all centers (complete or partial) were included in the analyses. For the cascade of care analysis, 15 centers that provided full data from 2011 to 2016 were included. Overall and annual distributions of the data were calculated as percentages and the Chi square test was used to determine temporal changes. RESULTS A total of 2,953 patients between 2011 and 2016 were included. Overall male to female ratio was 5:1 with a significant increase in the number of male cases from 2011 to 2016 (p<0.001). The highest prevalence was among those aged 25-34 years followed by the 35-44 age bracket. The most common reason for HIV testing was illness (35%). While the frequency of sex among men who have sex with men increased from 16% to 30.6% (p<0.001) over the study period, heterosexual intercourse (53%) was found to be the most common transmission route. Overall, 29% of the cases presented with a CD4 count of >500 cells/mm3 while 46.7% presented with a CD4 T cell count of <350 cells/mm3. Among newly diagnosed cases, 79% were retained in care, and all such cases initiated ART with 73% achieving viral suppression after six months of antiretroviral therapy. CONCLUSION The epidemiologic profile of HIV infected individuals is changing rapidly in Turkey with an increasing trend in the number of newly diagnosed people disclosing themselves as MSM. New diagnoses were mostly at a young age. The late diagnosis was found to be a challenging issue. Despite the unavailability of data for the first 90, Turkey is close to the last two steps of 90-90-90 targets.
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Affiliation(s)
- F S Erdinc
- Ankara Training and Research Hospital, Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - B Dokuzoguz
- Ankara Numune Training and Researh Hospital, Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - S Unal
- Hacettepe Universitesi Hastaneleri, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - S Komur
- Cukurova University, Department of Infectious Diseases and Clinical Microbiology, Adana, Turkey
| | - A C Inkaya
- Ankara Numune Training and Researh Hospital, Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - D Inan
- Akdeniz University, Department of Infectious Diseases and Clinical Microbiology, Antalya, Turkey
| | - I Karaoglan
- Gaziantep University, Department of Infectious Diseases and Clinical Microbiology, Gaziantep, Turkey
| | - A Deveci
- Ondokuz Mayis University, Department of Infectious Diseases and Clinical Microbiology, Samsun, Turkey
| | - M K Celen
- Dicle University, Department of Infectious Diseases and Clinical Microbiology, Diyarbakır, Turkey
| | - S Kose
- Izmir Tepecik Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, İzmir, Turkey
| | - N Erben
- Eskisehir Osmangazi University Faculty of Medicine, Department of Infectious Diseases and Clinical Microbiology, Eskisehir, Turkey
| | - G C Senturk
- Diskapi Yildirim Beyazit Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - Y Heper
- Uludag University, Department of Infectious Diseases and Clinical Microbiology, Bursa, Turkey
| | - S S Kutlu
- Pamukkale University, Department of Infectious Diseases and Clinical Microbiology, Denizli, Turkey
| | - C A Hatipoglu
- Ankara Training and Research Hospital, Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - S Sumer
- Selcuk University, Department of Infectious Diseases and Clinical Microbiology, Konya, Turkey
| | - B Kandemir
- Necmettin Erbakan University, Meram Medical Faculty Hospital, Department of Infectious Diseases and Clinical Microbiology, Konya, Turkey
| | - F Sirmatel
- Abant Izzet Baysal University, Department of Infectious Diseases and Clinical Microbiology, Bolu, Turkey
| | - Y Bayindir
- Inonu University, Department of Infectious Diseases and Clinical Microbiology, Malatya, Turkey
| | - E Yilmaz
- Uludag University, Department of Infectious Diseases and Clinical Microbiology, Bursa, Turkey
| | - Y Ersoy
- Inonu University, Department of Infectious Diseases and Clinical Microbiology, Malatya, Turkey
| | - E Kazak
- Uludag University, Department of Infectious Diseases and Clinical Microbiology, Bursa, Turkey
| | - M T Yildirmak
- Okmeydani Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - B Kayaaslan
- Yildirim Beyazit University Faculty of Medicine, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - K Ozden
- Ataturk University, Department of Infectious Diseases and Clinical Microbiology, Erzurum, Turkey
| | - A Sener
- Canakkale Onsekiz Mart University, Department of Infectious Diseases and Clinical Microbiology, Canakkale, Turkey
| | - A Kara
- Hacettepe University Ihsan Dogramaci Children's Hospital, Department of Infectious Diseases, Ankara, Turkey
| | - O Gunal
- Samsun Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Samsun, Turkey
| | - S Birengel
- Ankara University Faculty of Medicine, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - A Akbulut
- Firat University, Department of Infectious Diseases and Clinical Microbiology, Elazig, Turkey
| | - F Yetkin
- Inonu University, Department of Infectious Diseases and Clinical Microbiology, Malatya, Turkey
| | - N O Cuvalci
- Antalya Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Antalya, Turkey
| | - F Sargin
- Medeniyet University Goztepe Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - H Pullukcu
- Ege University, Department of Infectious Diseases and Clinical Microbiology, Izmir, Turkey
| | - D Gokengin
- Ege University, Department of Infectious Diseases and Clinical Microbiology, Izmir, Turkey
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15
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Erkoc-Ilter S, Saffarimiandoab F, Guclu S, Koseoglu-Imer DY, Tunaboylu B, Menceloglu Y, Koyuncu I, Unal S. Surface Modification of Reverse Osmosis Desalination Membranes with Zwitterionic Silane Compounds for Enhanced Organic Fouling Resistance. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Selda Erkoc-Ilter
- Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Sabanci University, Pendik 34906, Istanbul, Turkey
| | - Farzin Saffarimiandoab
- National Research Center on Membrane Technologies, Istanbul Technical University, Maslak 34469, Istanbul, Turkey
| | - Serkan Guclu
- Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Sabanci University, Pendik 34906, Istanbul, Turkey
| | - Derya Y. Koseoglu-Imer
- Department of Environmental Engineering, Istanbul Technical University, Maslak 34469, Istanbul, Turkey
| | - Bahadir Tunaboylu
- Department of Metallurgical and Materials Engineering, Marmara University, Goztepe 34722, Istanbul, Turkey
| | - Yusuf Menceloglu
- Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Sabanci University, Pendik 34906, Istanbul, Turkey
| | - Ismail Koyuncu
- National Research Center on Membrane Technologies, Istanbul Technical University, Maslak 34469, Istanbul, Turkey
- Department of Environmental Engineering, Istanbul Technical University, Maslak 34469, Istanbul, Turkey
| | - Serkan Unal
- Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Sabanci University, Pendik 34906, Istanbul, Turkey
- Sabanci University Nanotechnology Research and Application Center, Tuzla 34956, Istanbul, Turkey
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16
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Karahan O, Tufani A, Unal S, Misirlioglu IB, Menceloglu YZ, Sendur K. Synthesis and Morphological Control of VO 2 Nanostructures via a One-Step Hydrothermal Method. Nanomaterials (Basel) 2021; 11:nano11030752. [PMID: 33802645 PMCID: PMC8002504 DOI: 10.3390/nano11030752] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/05/2021] [Accepted: 03/08/2021] [Indexed: 11/16/2022]
Abstract
The morphology of nanostructures is a vital parameter to consider in components comprised of materials exhibiting specific functionalities. The number of process steps and the need for high temperatures can often be a limiting factor when targeting a specific morphology. Here, we demonstrate a repeatable synthesis of different morphologies of a highly crystalline monoclinic phase of vanadium dioxide (VO2(M)) using a one-step hydrothermal method. By adjusting the synthesis parameters, such as pH, temperature, and reducing agent concentration in the precursor, VO2 nanostructures with high uniformity and crystallinity are achieved. Some of these morphologies were obtained via the choice of the reducing agent that allowed us to skip the annealing step. Our results indicate that the morphologies of the nanostructures are very sensitive to the hydrazine hydrate (N2H4.H2O) concentration. Another reducing agent, dodecylamine, was used to achieve well-organized and high-quality VO2(M) nanotubes. Differential scanning calorimetry (DSC) experiments revealed that all samples display the monoclinic-to-tetragonal structural transition (MTST) regardless of the morphology, albeit at different temperatures that can be interpreted as the variations in overheating and undercooling limits. VO2(M) structures with a higher surface to volume ratio exhibit a higher overheating limit than those with low ratios.
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Affiliation(s)
- Ozlem Karahan
- Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla 34956, Istanbul, Turkey; (A.T.); (S.U.)
- Correspondence: (O.K.); (I.B.M.); (Y.Z.M.); (K.S.)
| | - Ali Tufani
- Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla 34956, Istanbul, Turkey; (A.T.); (S.U.)
| | - Serkan Unal
- Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla 34956, Istanbul, Turkey; (A.T.); (S.U.)
- Integrated Manufacturing Technologies Research and Application Center, Sabanci University, Teknopark İstanbul, Pendik 34906, Istanbul, Turkey
| | - I. Burc Misirlioglu
- Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla 34956, Istanbul, Turkey; (A.T.); (S.U.)
- Integrated Manufacturing Technologies Research and Application Center, Sabanci University, Teknopark İstanbul, Pendik 34906, Istanbul, Turkey
- Correspondence: (O.K.); (I.B.M.); (Y.Z.M.); (K.S.)
| | - Yusuf Z. Menceloglu
- Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla 34956, Istanbul, Turkey; (A.T.); (S.U.)
- Integrated Manufacturing Technologies Research and Application Center, Sabanci University, Teknopark İstanbul, Pendik 34906, Istanbul, Turkey
- Nanotechnology Research and Application Center, Sabanci University, Tuzla 34956, Istanbul, Turkey
- Correspondence: (O.K.); (I.B.M.); (Y.Z.M.); (K.S.)
| | - Kursat Sendur
- Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla 34956, Istanbul, Turkey; (A.T.); (S.U.)
- Correspondence: (O.K.); (I.B.M.); (Y.Z.M.); (K.S.)
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Coskun C, Unal S, Uner A, Aksu T, Aytac S, Kuskonmaz B, Gumruk F. Occurence of acute myeloid leukemia after primary hepatic carcinoma in a patient who had liver transplantation. Hematol Transfus Cell Ther 2020. [DOI: 10.1016/j.htct.2020.09.130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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18
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Coskun C, Gumruk F, Cemaloglu M, Orhan M, Tezcan I, Unal S. A case report of RAS-associated autoimmune lymphoproliferative disorder. Hematol Transfus Cell Ther 2020. [DOI: 10.1016/j.htct.2020.09.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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19
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Coskun C, Unal S, Akarsu N. A rare variant of dyskeratosis congenita: RTEL1 defect. Hematol Transfus Cell Ther 2020. [DOI: 10.1016/j.htct.2020.09.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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20
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Coskun C, Unal S, Gumruk F. The molecular spectrum of patients with hereditary spherocytosis: a single center experience. Hematol Transfus Cell Ther 2020. [DOI: 10.1016/j.htct.2020.09.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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21
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Coskun C, Aksu T, Gumruk F, Unal S. Klippel–Trenaunay syndrome associated with chronic myeloid leukemia. Hematol Transfus Cell Ther 2020. [DOI: 10.1016/j.htct.2020.09.128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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22
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Ormanci-Acar T, Tas CE, Keskin B, Ozbulut EBS, Turken T, Imer D, Tufekci N, Menceloglu YZ, Unal S, Koyuncu I. Thin-film composite nanofiltration membranes with high flux and dye rejection fabricated from disulfonated diamine monomer. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118172] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Tas C, Sevinis Ozbulut EB, Ceven OF, Tas BA, Unal S, Unal H. Purification and Sorting of Halloysite Nanotubes into Homogeneous, Agglomeration-Free Fractions by Polydopamine Functionalization. ACS Omega 2020; 5:17962-17972. [PMID: 32743169 PMCID: PMC7391362 DOI: 10.1021/acsomega.0c01057] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Abstract
Halloysite nanotubes (HNTs) have attracted great attention in the field of nanotechnology as natural, high value-added nanomaterials. Despite their significant potential as carriers of active agents and fillers in nanocomposite structures, inhomogeneity of HNTs in terms of length and diameter along with their agglomeration tendency poses important obstacles for the utilization of them in a wider range of applications. Here, a facile, three-step separation protocol that allows the sorting of HNTs into agglomeration-free, uniform size fractions is reported. The protocol consists of coating of HNTs with polydopamine to impart hydrophilicity and aqueous dispersibility, followed by their ultrasonication and centrifugation at varying velocities for size-based separation. Particle size distribution analysis by scanning electron microscopy and dynamic light scattering has demonstrated that the separation protocol resulted in uniform HNT fractions of varying agglomeration states and particle sizes. The highest quality fraction obtained with 18% yield was free of agglomerations and consisted of HNTs of uniform lengths and diameters. The polydopamine coating on HNTs which facilitated the separation was demonstrated to be removed by a simple heat treatment that preserved the crystal structure of HNTs. The impact of the separation protocol on the loading and functionalization capacity of halloysites was investigated. Highest quality HNTs presented 4.1-fold increase in lumen loading and 1.9-fold increase in covalent surface coupling ratios compared to the loading and functionalization ratios obtained with raw HNTs. Similarly, sorted, high-quality HNTs were demonstrated to be better dispersed in a polymeric matrix, resulting in polymeric nanocomposites with significantly enhanced mechanical properties compared to nanocomposites prepared with raw HNTs. The three-step separation protocol presented here provides a toolbox that allows sorting of raw HNTs into uniform fractions of different size ranges, from which HNTs of desired qualities required by different applications can be selected.
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Affiliation(s)
- Cuneyt
Erdinc Tas
- Faculty
of Engineering and Natural Sciences, Sabanci
University, 34956 Istanbul, Turkey
- Sabanci
University SUNUM Nanotechnology Research Center, 34956 Istanbul, Turkey
| | | | - Omer Faruk Ceven
- Faculty
of Technology, Marmara University, 34722 Istanbul, Turkey
| | - Buket Alkan Tas
- Faculty
of Engineering and Natural Sciences, Sabanci
University, 34956 Istanbul, Turkey
- Sabanci
University SUNUM Nanotechnology Research Center, 34956 Istanbul, Turkey
| | - Serkan Unal
- Faculty
of Engineering and Natural Sciences, Sabanci
University, 34956 Istanbul, Turkey
- Integrated
Manufacturing Technologies Research and Application Center, Sabanci University, 34906 Istanbul, Turkey
| | - Hayriye Unal
- Sabanci
University SUNUM Nanotechnology Research Center, 34956 Istanbul, Turkey
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Micoogullari U, Unal S, Alijla A, Okulu E, Micoogullari L, Kayigil O. P-02-40 Effectiveness of the Caverno-Dorsal Vein Shunt (Barryshunt) on Long Term Ischemic Priapism and Its Effect on the Postoperative Long Term Erectile Function. J Sex Med 2020. [DOI: 10.1016/j.jsxm.2020.04.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Unal G, Cohen S, Fallah Rad M, Canela C, Swami J, Short B, Argyelan M, Petrides G, Unal S, Badran B, Sackeim H, Bikson M. P288 Dynamic models of electroconvulsive therapy: Implications for programming, electrodes, and current flow. Clin Neurophysiol 2020. [DOI: 10.1016/j.clinph.2019.12.398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Sevinis Ozbulut EB, Seven S, Bilge K, Akkas T, Tas CE, Yildiz B, Atilgan C, Menceloglu YZ, Unal S. Blends of highly branched and linear poly(arylene ether sulfone)s: Multiscale effect of the degree of branching on the morphology and mechanical properties. POLYMER 2020. [DOI: 10.1016/j.polymer.2019.122114] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Korucu B, Unal I, Pekcan M, Inkaya AC, Yeter H, Cetinkaya MA, Kaymaz FF, Unal S, Akova M, Erdem Y. Ultrastructural evaluation of urine alkalinization versus hydration on colistin-induced nephrotoxicity. Hum Exp Toxicol 2019; 38:1366-1377. [PMID: 31280613 DOI: 10.1177/0960327119862339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Colistin is a vital antibiotic used in multidrug-resistant infections. Its most important side effect is nephrotoxicity. Colistin is a weak acid. This study aims to evaluate whether urine alkalinization is protective in the nephrotoxicity of colistin. METHODS Twenty-eight male Sprague-Dawley rats were divided into groups. Group I (n = 4) was injected with intramuscular distilled water twice a day for 7 days. Group II (n = 8) was injected with 750,000 IU/kg/day colistin for 7 days. Group III (n = 8) was injected with the same dose of colistin after their urinary pH was ≥7 through the addition of bicarbonate in their drinking water. Group IV (n = 8) was injected with the same dose of colistin after their urine density fell below 1010 through the addition of NaCl molds in their food and 12.6 mg/L NaCl in their drinking water. RESULTS According to tubular degenerations (scored 0-5), group I scored 0, group II scored 4.25, group III scored 2, and group IV scored 1.5. In groups III and IV, protection was achieved (p = 0.001). The bicarbonate group was not superior to the NaCl group (p = 0.789). In transmission electron microscopy, group III had more microvilli integrity and autophagic vacuoles compared to group IV. Group IV had mitochondrial swelling and cristae lysis. A lower urine density was related to lower tubular scores (p = 0.001). CONCLUSIONS Colistin was highly nephrotoxic without protection. Light microscopy findings revealed that urinary alkalinization and NaCl hydration were similarly protective. Urine alkalinization further prevents ultrastructural changes as revealed by electron microscopy.
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Affiliation(s)
- B Korucu
- Department of Nephrology, Gazi University Faculty of Medicine, Ankara, Turkey
| | - I Unal
- Department of Histology and Embryology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - M Pekcan
- Department of Biochemistry, Ankara University Faculty of Veterinary Medicine, Ankara, Turkey
| | - A C Inkaya
- Department of Infectious Diseases, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - H Yeter
- Department of Nephrology, Gazi University Faculty of Medicine, Ankara, Turkey
| | - M A Cetinkaya
- Department of Histology and Embryology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - F F Kaymaz
- Department of Infectious Diseases, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - S Unal
- Department of Infectious Diseases, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - M Akova
- Department of Infectious Diseases, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Y Erdem
- Department of Nephrology, Hacettepe University Faculty of Medicine, Ankara, Turkey
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Alkan Tas B, Sehit E, Erdinc Tas C, Unal S, Cebeci FC, Menceloglu YZ, Unal H. Carvacrol loaded halloysite coatings for antimicrobial food packaging applications. Food Packag Shelf Life 2019. [DOI: 10.1016/j.fpsl.2019.01.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sharabati JAD, Guclu S, Erkoc-Ilter S, Koseoglu-Imer DY, Unal S, Menceloglu YZ, Ozturk I, Koyuncu I. Interfacially polymerized thin-film composite membranes: Impact of support layer pore size on active layer polymerization and seawater desalination performance. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.11.047] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Akboga M, Balci K, Yilmaz S, Aydin S, Balci M, Yayla C, Ertem A, Unal S, Aras D, Topaloglu S. 5924Tp-e interval and Tp-e/QTc ratio as novel surrogate markers for prediction of ventricular arrhythmic events in hypertrophic cardiomyopathy. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.5924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M Akboga
- Turkiye Yuksek Ihtisas Hospital, Cardiology, Ankara, Turkey
| | - K Balci
- Turkiye Yuksek Ihtisas Hospital, Cardiology, Ankara, Turkey
| | - S Yilmaz
- Turkiye Yuksek Ihtisas Hospital, Cardiology, Ankara, Turkey
| | - S Aydin
- Turkiye Yuksek Ihtisas Hospital, Cardiology, Ankara, Turkey
| | - M Balci
- Turkiye Yuksek Ihtisas Hospital, Cardiology, Ankara, Turkey
| | - C Yayla
- Turkiye Yuksek Ihtisas Hospital, Cardiology, Ankara, Turkey
| | - A Ertem
- Turkiye Yuksek Ihtisas Hospital, Cardiology, Ankara, Turkey
| | - S Unal
- Turkiye Yuksek Ihtisas Hospital, Cardiology, Ankara, Turkey
| | - D Aras
- Turkiye Yuksek Ihtisas Hospital, Cardiology, Ankara, Turkey
| | - S Topaloglu
- Turkiye Yuksek Ihtisas Hospital, Cardiology, Ankara, Turkey
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Acar B, Gucuk Ipek E, Unal S, Yayla C, Karanfil M, Burak C, Kara M, Bayraktar F, Kuyumcu M, Aydogdu S. Evaluation of Mediterranean diet adherence in patients with a history of coronary revascularization. Rev Clin Esp 2018. [DOI: 10.1016/j.rceng.2018.02.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Acar B, Gucuk Ipek E, Unal S, Yayla C, Karanfil M, Burak C, Kara M, Bayraktar F, Kuyumcu MS, Aydogdu S. Evaluation of Mediterranean diet adherence in patients with a history of coronary revascularization. Rev Clin Esp 2018; 218:215-222. [PMID: 29735268 DOI: 10.1016/j.rce.2018.02.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 02/22/2018] [Accepted: 02/24/2018] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Lifestyle modification is an important component of the secondary prevention strategies; and a healthy diet is one of the cornerstones in management of the coronary heart disease. We aimed to investigate the dietary habits of the patients with history of coronary revascularization, characteristics of the ones with good adherence by using alternate MedDiet questionnaire. METHODS We included outpatients who had a history of coronary revascularization at least 6 months prior to enrollment. Each participant filled out a questionnaire to collect the data of demographics and clinical characteristics. Alternate MedDiet score was calculated to evaluate the Mediterranean style dietary adherence. Alternate MedDiet was originally based on 14-item questionnaire; we adjusted it to our population (max 13 points). RESULTS We enrolled 226 consecutive outpatients (age 61.7±10.9 years, 72% males). The median duration after revascularization was 60 months. A total of 112 (49.6%) patients had previous percutaneous coronary intervention (PCI), 77 (34.1%) had coronary by-pass graft surgery (CABG), and 36 (15.9%) had both revascularization procedures. The median MedDiet score was 6. Patients were stratified into two subgroups (MedDiet score ≥7 vs. <7). A total of 61 (26.9%) patients had MedDiet score ≥7. By univariate analysis, good MedDiet scores were associated with older age, waist circumference, body mass index, high education level, regular follow-up, duration after first revascularization and revascularization with CABG+PCI. In the multivariate analysis, high education level (P=.002, OR=8.212, 95%CI: 2.155-31.291) and duration after revascularization (P=.034, OR=1.007, 95%CI: 1.001-1.013) were independent predictors of good MedDiet scores. CONCLUSION The adherence rate to a healthy diet was low in patients with previous coronary revascularization. MedDiet score seems to be practical and useful item to evaluate the dietary habits in outpatient setting. Mediterranean diet adherence rates were associated with high education level, and duration after revascularization.
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Affiliation(s)
- B Acar
- Unidad de Cardiología, Docencia e Investigación Hospital Yuksek Ihtisas, Ankara, Turquía.
| | - E Gucuk Ipek
- Unidad de Cardiología, Docencia e Investigación Hospital Yuksek Ihtisas, Ankara, Turquía
| | - S Unal
- Unidad de Cardiología, Docencia e Investigación Hospital Yuksek Ihtisas, Ankara, Turquía
| | - C Yayla
- Unidad de Cardiología, Docencia e Investigación Hospital Yuksek Ihtisas, Ankara, Turquía
| | - M Karanfil
- Unidad de Cardiología, Docencia e Investigación Hospital Yuksek Ihtisas, Ankara, Turquía
| | - C Burak
- Unidad de Cardiología, Docencia e Investigación Hospital Yuksek Ihtisas, Ankara, Turquía
| | - M Kara
- Unidad de Cardiología, Docencia e Investigación Hospital Yuksek Ihtisas, Ankara, Turquía
| | - F Bayraktar
- Unidad de Cardiología, Docencia e Investigación Hospital Yuksek Ihtisas, Ankara, Turquía
| | - M S Kuyumcu
- Unidad de Cardiología, Docencia e Investigación Hospital Yuksek Ihtisas, Ankara, Turquía
| | - S Aydogdu
- Unidad de Cardiología, Docencia e Investigación Hospital Yuksek Ihtisas, Ankara, Turquía
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Unal S, Yalcin MG, Ocak S, Yalcin R, Ozmen SF. Computation of gamma radioactivity of natural rocks in the vicinity of Antalya province and its effect on health. KERNTECHNIK 2018. [DOI: 10.3139/124.110895] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AbstractThe aim of this study is to determine uranium (238U), potassium (40K) and thorium (232Th) in the radioactive elements by measuring the natural rocks in the vicinity of Antalya province by using High-purity Germanium (HPGe) Detector with gamma spectrometry 69. At the end of the measurements, total absorbed dose rates of the rock samples have been found to be within the normal range of values between 3.10 nGy/h and 117.35 nGy/h. While the minimum value of Raeq has been determined to be 6.36 Bq/kg at sample S8, the maximum value has been determined as 250.15 Bq/kg at sample S4. All of the values obtained at the end of the study have been determined to be lower than the maximum Raeq value (370 Bq/kg) and the limit values for industrial products which ranges between 370 – 740 Bq/kg. ARa, ATh and AK; 232Th, 40K and 226Ra of radionuclides are the activity concentrations in terms of Bq/kg. The hex value should be less than 1. The value is based on the upper limit of Raeq (370 Bq/kg). All of the results obtained are less than the limit value of 1.
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Affiliation(s)
- S. Unal
- 1Akdeniz University, Engineering Geology, 07058, Antalya, Turkey
| | - M. G. Yalcin
- 1Akdeniz University, Engineering Geology, 07058, Antalya, Turkey
| | - S. Ocak
- 2Gazi University, Graduate School of Natural and Applied Sciences, Ankara, Turkey
| | - R. Yalcin
- 1Akdeniz University, Engineering Geology, 07058, Antalya, Turkey
| | - S. F. Ozmen
- 3Akdeniz University, Department of Physic, 07058, Antalya, Turkey
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Alacacioglu A, Unal S, Canpolat S, Yurt A, Oztekin O, Coskun A, Karatas A, Postaci H, Sop G. Breast Metastasis of Anaplastic Oligodendroglioma: A Case Report. Tumori 2018. [DOI: 10.1177/030089161209800629] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Extracranial metastasis of primary brain tumors is rarely observed. Of all brain malignancies, glioblastomas, medulloblastomas and astrocytomas metastasize most frequently. Metastasis of oligondendroglioma is rare. We present a case of breast metastasis in a 58-year-old man with an anaplastic oligodendroglioma.
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Affiliation(s)
- Ahmet Alacacioglu
- Department of Internal Medicine, Bozyaka Research and Training Hospital, Bozyaka, Izmir, Turkey
| | - Serkan Unal
- Department of Internal Medicine, Bozyaka Research and Training Hospital, Bozyaka, Izmir, Turkey
| | - Selin Canpolat
- Department of Pathology, Bozyaka Research and Training Hospital, Bozyaka, Izmir, Turkey
| | - Alaattin Yurt
- Department of Neurosurgery, Bozyaka Research and Training Hospital, Bozyaka, Izmir, Turkey
| | - Ozgur Oztekin
- Department of Radiology, Bozyaka Research and Training Hospital, Bozyaka, Izmir, Turkey
| | - Ali Coskun
- Department of General Surgery, Bozyaka Research and Training Hospital, Bozyaka, Izmir, Turkey
| | - Ayse Karatas
- Department of Neurosurgery, Bozyaka Research and Training Hospital, Bozyaka, Izmir, Turkey
| | - Hakan Postaci
- Department of Pathology, Bozyaka Research and Training Hospital, Bozyaka, Izmir, Turkey
| | - Gulten Sop
- Department of Internal Medicine, Bozyaka Research and Training Hospital, Bozyaka, Izmir, Turkey
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Unal S, Yayla C, Acar B, G Ertem A, Akif Erdol M, Aydogdu S. P5516Tp-e Interval and Tp-e/QT Ratio in patients with human immunodeficiency virus. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Dumas E, Atyame CM, Malcolm CA, Le Goff G, Unal S, Makoundou P, Pasteur N, Weill M, Duron O. Molecular data reveal a cryptic species within the Culex pipiens mosquito complex. Insect Mol Biol 2016; 25:800-809. [PMID: 27591564 DOI: 10.1111/imb.12264] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The Culex pipiens mosquito complex is a group of evolutionarily closely related species including C. pipiens and Culex quinquefasciatus, both infected by the cytoplasmically inherited Wolbachia symbiont. A Wolbachia-uninfected population of C. pipiens was however described in South Africa and was recently proposed to represent a cryptic species. In this study, we reconsidered the existence of this species by undertaking an extensive screening for the presence of Wolbachia-uninfected C. pipiens specimens and by characterizing their genetic relatedness with known members of the complex. We first report on the presence of Wolbachia-uninfected specimens in several breeding sites. We next confirm that these uninfected specimens unambiguously belong to the C. pipiens complex. Remarkably, all uninfected specimens harbour mitochondrial haplotypes that are either novel or identical to those previously found in South Africa. In all cases, these mitochondrial haplotypes are closely related, but different, to those found in other C. pipiens complex members known to be infected by Wolbachia. Altogether, these results corroborate the presence of a widespread cryptic species within the C. pipiens species complex. The potential role of this cryptic C. pipiens species in the transmission of pathogens remains however to be determined. The designation 'Culex juppi nov. sp.' is proposed for this mosquito species.
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Affiliation(s)
- E Dumas
- Institut des Sciences de l'Evolution, Univ. Montpellier, CNRS, Montpellier, France
| | - C M Atyame
- Institut des Sciences de l'Evolution, Univ. Montpellier, CNRS, Montpellier, France
- Department of Virology, Institut Pasteur, Arboviruses and Insect Vectors, Paris, France
| | - C A Malcolm
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield, Hertfordshire, UK
| | - G Le Goff
- UMR MIVEGEC (Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle), IRD 224, CNRS 5290, Univ. Montpellier, Montpellier, France
| | - S Unal
- Institut des Sciences de l'Evolution, Univ. Montpellier, CNRS, Montpellier, France
| | - P Makoundou
- Institut des Sciences de l'Evolution, Univ. Montpellier, CNRS, Montpellier, France
| | - N Pasteur
- Institut des Sciences de l'Evolution, Univ. Montpellier, CNRS, Montpellier, France
| | - M Weill
- Institut des Sciences de l'Evolution, Univ. Montpellier, CNRS, Montpellier, France
| | - O Duron
- Institut des Sciences de l'Evolution, Univ. Montpellier, CNRS, Montpellier, France
- UMR MIVEGEC (Maladies Infectieuses et Vecteurs: Ecologie, Génétique, Evolution et Contrôle), IRD 224, CNRS 5290, Univ. Montpellier, Montpellier, France
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Nadernezhad A, Khani N, Skvortsov GA, Toprakhisar B, Bakirci E, Menceloglu Y, Unal S, Koc B. Multifunctional 3D printing of heterogeneous hydrogel structures. Sci Rep 2016; 6:33178. [PMID: 27630079 PMCID: PMC5024089 DOI: 10.1038/srep33178] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 08/18/2016] [Indexed: 12/04/2022] Open
Abstract
Multimaterial additive manufacturing or three-dimensional (3D) printing of hydrogel structures provides the opportunity to engineer geometrically dependent functionalities. However, current fabrication methods are mostly limited to one type of material or only provide one type of functionality. In this paper, we report a novel method of multimaterial deposition of hydrogel structures based on an aspiration-on-demand protocol, in which the constitutive multimaterial segments of extruded filaments were first assembled in liquid state by sequential aspiration of inks into a glass capillary, followed by in situ gel formation. We printed different patterned objects with varying chemical, electrical, mechanical, and biological properties by tuning process and material related parameters, to demonstrate the abilities of this method in producing heterogeneous and multi-functional hydrogel structures. Our results show the potential of proposed method in producing heterogeneous objects with spatially controlled functionalities while preserving structural integrity at the switching interface between different segments. We anticipate that this method would introduce new opportunities in multimaterial additive manufacturing of hydrogels for diverse applications such as biosensors, flexible electronics, tissue engineering and organ printing.
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Affiliation(s)
- Ali Nadernezhad
- Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli-Tuzla, Istanbul, 34956, Turkey.,3D Bioprinting Laboratory, Sabanci University Nanotechnology Research and Application Center, Orhanli-Tuzla, Istanbul, 34956, Turkey
| | - Navid Khani
- Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli-Tuzla, Istanbul, 34956, Turkey.,3D Bioprinting Laboratory, Sabanci University Nanotechnology Research and Application Center, Orhanli-Tuzla, Istanbul, 34956, Turkey
| | - Gözde Akdeniz Skvortsov
- 3D Bioprinting Laboratory, Sabanci University Nanotechnology Research and Application Center, Orhanli-Tuzla, Istanbul, 34956, Turkey.,Sabanci University Nanotechnology Research and Application Center, Orhanli-Tuzla, Istanbul, 34956, Turkey
| | - Burak Toprakhisar
- Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli-Tuzla, Istanbul, 34956, Turkey.,3D Bioprinting Laboratory, Sabanci University Nanotechnology Research and Application Center, Orhanli-Tuzla, Istanbul, 34956, Turkey
| | - Ezgi Bakirci
- Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli-Tuzla, Istanbul, 34956, Turkey.,3D Bioprinting Laboratory, Sabanci University Nanotechnology Research and Application Center, Orhanli-Tuzla, Istanbul, 34956, Turkey
| | - Yusuf Menceloglu
- Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli-Tuzla, Istanbul, 34956, Turkey
| | - Serkan Unal
- Sabanci University Nanotechnology Research and Application Center, Orhanli-Tuzla, Istanbul, 34956, Turkey
| | - Bahattin Koc
- Faculty of Engineering and Natural Sciences, Sabanci University, Orhanli-Tuzla, Istanbul, 34956, Turkey.,3D Bioprinting Laboratory, Sabanci University Nanotechnology Research and Application Center, Orhanli-Tuzla, Istanbul, 34956, Turkey
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Kasikcioglu HA, Unal S, Tartan Z, Uyarel H, Okmen E, Kasikcioglu E, Cam N. Effects of Levosimendan on Left Ventricular Functional Remodelling and Exercise Intolerance: A Tissue Doppler Study. J Int Med Res 2016; 33:397-405. [PMID: 16104443 DOI: 10.1177/147323000503300405] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Levosimendan is a calcium sensitizer that demonstrates enhanced myocardial contractility. There is little information concerning the effect of levosimendan on left ventricular tissue parameters and exercise capacity. We evaluated the effects of a 24-h course of levosimendan therapy on cardiac tissue parameters in 30 patients, aged 48-70 years, admitted to our hospital for the management of decompensated heart failure. All patients underwent echocardiographic examination using tissue Doppler imaging (TDI) and a 6-min walk test. Systolic myocardial velocity of the mitral annulus (Sm) was significantly increased in levosimendantreated patients compared with placebotreated patients. There was a positive correlation between Sm and exercise capacity. Levosimendan might be expected to increase cardiac contractile force, especially Sm velocity, in parallel with exercise tolerance. The study has also shown that the progress of ventricular function after levosimendan treatment in patients with exercise intolerance could be monitored effectively by Sm velocity measurements using TDI.
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Affiliation(s)
- H A Kasikcioglu
- Siyami Ersek Cardiovascular Surgery Centre, Istanbul, Turkey.
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Bayri A, Unal S, Altin S, Bulut F, Dayanc BE. Altered isotope charge distribution of acetylcholine neurotransmitter and Myasthenia Gravis. Med Hypotheses 2016; 89:84-8. [PMID: 26968916 DOI: 10.1016/j.mehy.2016.01.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/25/2016] [Accepted: 01/29/2016] [Indexed: 11/30/2022]
Abstract
Acetylcholine (ACh) is a central neurotransmitter that is used for signal transmission among neurons. For signal transmission in neurons, a neurotransmitter must bind to its receptor in order to produce an action potential. It is known that in Myasthenia Gravis (MG) cases, autoantibodies could block this binding. In the future, the treatment of MG could be achieved via modulation of molecular interaction between ACh and acetylcholine receptor (AChR). This study suggests that if an atom on a ligand (i.e. a neurotransmitter) is replaced with its isotope, it may cause charge redistribution such as that the binding between ligand and its receptor may be improved. Hence suggesting that with replacement of atoms with their isotopes in any biologically important ligand could alter its affinity towards its corresponding receptor, which would have a wide array of applications in medicine.
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Affiliation(s)
- A Bayri
- Inonu University, Physics Department, 44280 Malatya, Turkey
| | - S Unal
- Inonu University, Psychiatry Department, 44280 Malatya, Turkey
| | - S Altin
- Inonu University, Physics Department, 44280 Malatya, Turkey
| | - F Bulut
- Inonu University, Physics Department, 44280 Malatya, Turkey
| | - B E Dayanc
- Inonu University, Department of Molecular Biology and Genetics, 44280 Malatya, Turkey
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Hauschild M, Elowe-Gruau E, Dwyer A, Aquarone MP, Unal S, Jornayvaz FR, Perrenoud L, Gastaldi G, Castellsague M, Dirlewanger M, Schwitzgebel VM. [Transition in diabetology]. Rev Med Suisse 2015; 11:450-455. [PMID: 25915986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
For patients with type I diabetes, transition from pediatric to adult care is a challenge due to complex treatment requirements and the physical, psychological and social changes of adolescence. Members of the care team must recognize that while these emerging adults need to develop self-management skills, this may conflict at times with the developmentally appropriate desire for increasing autonomy. The role of nursing in coordinating a successful transition is critical for maintaining continuity of patient-centered care that responds to the specific needs of these young adults.
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Aktas S, Turkyilmaz C, Unal S, Ergenekon E, Damar C, Boyunaga O, Sal E, Kaya Z, Ozdemir Y, Bakkaloglu SE. PRENATAL ONSET DISSEMINATED RENAL VEIN THROMBOSIS EXTENDED INTO VENA CAVA IN A LATE PRETERM INFANT. Genet Couns 2015; 26:471-474. [PMID: 26852522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Malhan S, Kockaya G, Elbir Zengin T, Dalgic C, Yenilmez FB, Cerci P, Oksuz E, Tayfun K, Unal S. A Cost-Effectiveness Evaluation for a New Therapy in HIV Treatment. Value Health 2014; 17:A677. [PMID: 27202495 DOI: 10.1016/j.jval.2014.08.2518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- S Malhan
- Baskent University, Ankara, Turkey
| | | | | | - C Dalgic
- Gilead Science, Istanbul, Turkey
| | | | - P Cerci
- Hacettepe University, Ankara, Turkey
| | - E Oksuz
- Baskent University, Ankara, Turkey
| | - K Tayfun
- Gilead Science, Istanbul, Turkey
| | - S Unal
- Hacettepe University, Ankara, Turkey
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Kockaya G, Yenilmez FB, Elbir Zengin T, Dalgic C, Malhan S, Cerci P, Oksuz E, Tayfun K, Unal S. The Cost-Effectiveness Analysis for Hiv Treatment Alternatives in Turkey. Value Health 2014; 17:A678. [PMID: 27202504 DOI: 10.1016/j.jval.2014.08.2521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | | | | | - C Dalgic
- Gilead Science, Istanbul, Turkey
| | - S Malhan
- Baskent University, Ankara, Turkey
| | - P Cerci
- Hacettepe University, Ankara, Turkey
| | - E Oksuz
- Baskent University, Ankara, Turkey
| | - K Tayfun
- Gilead Science, Istanbul, Turkey
| | - S Unal
- Hacettepe University, Ankara, Turkey
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Karakan T, Ibis M, Arhan M, Unal S. PP110-MON: Exclusive Enteral Nutrition with TGF-Beta Supplements Improve Clinical Parameters and Increase Nutritional Status of Adult Patients with Inflammatory Bowel Disease. Clin Nutr 2014. [DOI: 10.1016/s0261-5614(14)50445-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gelebek Y, Cinar B, Zengin H, Aytac H, Bastug Z, Sardan Y, Inkaya C, Unal S. P192: Comparisons of procedure specific surgical site infection rates of a Turkish university hospital with Turkish national surveillance data. Antimicrob Resist Infect Control 2013. [PMCID: PMC3687855 DOI: 10.1186/2047-2994-2-s1-p192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Celik T, Gunesacar R, Balci A, Unal S, Aldic G, Eskici H, Atilgan N, Elmaci S, Tutanc M, Can D. 355 The importance of the M470V polymorphism. J Cyst Fibros 2013. [DOI: 10.1016/s1569-1993(13)60495-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zengin H, Gelebek Y, Cınar B, Cinar B, Gelebek Y, Aytac H, Aytac H, Bastug Z, Bastug Z, Unal S, Sardan Y, Inkaya C, Unal S. P377: Evaluation of the cleaning and disinfection process at a university hospital in Turkey. Antimicrob Resist Infect Control 2013. [PMCID: PMC3688407 DOI: 10.1186/2047-2994-2-s1-p377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Alacacioglu A, Unal S, Canpolat S, Yurt A, Oztekin O, Coskun A, Karatas A, Postaci H, Sop G. Breast metastasis of anaplastic oligodendroglioma: a case report. Tumori 2013; 98:162e-4e. [PMID: 23389376 DOI: 10.1700/1217.13513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Extracranial metastasis of primary brain tumors is rarely observed. Of all brain malignancies, glioblastomas, medulloblastomas and astrocytomas metastasize most frequently. Metastasis of oligondendroglioma is rare. We present a case of breast metastasis in a 58-year-old man with an anaplastic oligodendroglioma.
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Affiliation(s)
- Ahmet Alacacioglu
- Division of Medical Oncology, Department of Internal Medicine, Bozyaka Research and Training Hospital, Bozyaka, Izmir, Turkey.
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Cinar B, Zengin H, Gelebek Y, Aytac H, Bastug Z, Sardan Y, Unal S. P217: Invasive device associated infection rate from 2005 to 2012 in medical intensive care unit at a university hospital in Turkey. Antimicrob Resist Infect Control 2013. [PMCID: PMC3687808 DOI: 10.1186/2047-2994-2-s1-p217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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