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912篇 您的检索式:作者名="Demirci"
    题名 作者 年代 出处 被引量
1Pulmonary involvement in inflammatory bowel disease显示文摘AIM:To determine the relationship of pulmonary abnormalities and bowel disease activity in inflammatory bowel disease(IBD).METHODS:Thirty ulcerative colitis(UC)and nine Crohn's disease patients,and 20 control subjects were enrolled in this prospective study.Detailed clinical information was obtained.Extent and activity of the bowel disease were established endoscopically.Each patient underwent pulmonary function tests and high-resolution computed tomography(HRCT).Blood samples for measurement of C-reactive protein(CRP),erythrocyte sedimentation rate(ESR),angiotensin converting enzyme and total IgE were delivered by the patients.RESULTS:Ten(25.6%)patients had respiratory symptoms.A pulmonary function abnormality was present in 22 of 39 patients.Among all patients,the most prevalent abnormalities in lung functions were a decrease in forced expiratory volume in 1 s(FEV1),FEV1/forced vital capacity(FVC),forced expiratory flow(FEF)25%-75%,transfer coefficient for carbon monoxide(DLCO),DLCO/alveolar volume.Increased respiratory symptoms score was associated with high endoscopic activity index in UC patients.Endoscopic and clinical activities in UC patients were correlated with FEV1,FEV1/FVC,and FEF 25%-75%.Smoking status,duration of disease and medication were not correlated with pulmonary physiological test results,HRCT abnormalities,clinical/endoscopic disease activity,CRP,ESR or total IgE level or body mass index.CONCLUSION:It is important that respiratory manifestations are recognized and treated early in IBD.Otherwise,they can lead to destructive and irreversible changes in the airway wall.Aydin Yilmaz Nilgün Yilmaz Demirci Derya Hosgün Enver ner Yurdanur Erdogan Atila Gkek Atalay aglar 2010World Journal of Gastroenterology2010,16,39:15
2Portable lensless wide-field microscopy imaging platform based on digital inline holography and multi-frame pixel super-resolution显示文摘In this paper,an irregular displacement-based lensless wide-field microscopy imaging platform is presented by combining digital in-line holography and computational pixel super-resolution using multi-frame processing.The samples are illuminated by a nearly coherent illumination system,where the hologram shadows are projected into a complementary metal-oxide semiconductor-based imaging sensor.To increase the resolution,a multi-frame pixel resolution approach is employed to produce a single holographic image from multiple frame observations of the scene,with small planar displacements.Displacements are resolved by a hybrid approach:(i)alignment of the LR images by a fast feature-based registration method,and(ii)fine adjustment of the sub-pixel information using a continuous optimization approach designed to find the global optimum solution.Numerical method for phase-retrieval is applied to decode the signal and reconstruct the morphological details of the analyzed sample.The presented approach was evaluated with various biological samples including sperm and platelets,whose dimensions are in the order of a few microns.The obtained results demonstrate a spatial resolution of 1.55 μm on a field-of-view of<30 mm^(2).Antonio C Sobieranski Fatih Inci H Cumhur Tekin Mehmet Yuksekkaya Eros Comunello Daniel Cobra Aldo von Wangenheim Utkan Demirci 2015Light(Science & Applications)2015,4,1:7
3葵花籽油在不同精炼阶段中反式脂肪酸的研究显示文摘用毛细管气相色谱测定了葵花籽油在不同精炼阶段反式脂肪酸的含量,物理精炼的葵花籽油中C18∶1、C18∶2、C18∶3反式脂肪酸含量分别为0.22%±0.03%、2.31%±0.23%和0.03%±0.01%;化学精炼的葵花籽油中分别为0.05%±0.01%、0.69%±0.26%和0.02%±0.01%。在物理精炼末期水蒸汽蒸馏工序反式脂肪酸的含量迅速增加。化学精炼的油中反式脂肪酸含量小于1%。由于在物理精炼的末期使用了高温,油中反式脂肪酸的含量比化学精炼高。在物理精炼中为了减少反式脂肪酸的形成应仔细研究水蒸汽蒸馏工序的工艺条件。Murat Tasan Mehmet Demirci 徐廷丽(译) 2007中国油脂2007,32,2:5
4IL-2 and IL-15 Exhibit Opposing Effects on Fas Mediated Apoptosis显示文摘It has been shown that IL-2 and IL-15 can have opposing effects on life and death of T cells. However, the role of IL-2 and IL-15 in regulating the fate of other cell types is less clear. In the present study, we examined the impact of IL-2 and IL-15 on life and death of pre-B cells using the BAF-B03 line. We showed that BAF-B03 cells constitutively expressed the private IL-2Rα chain and IL-15Rα chain, and the shared IL-2Rβ chain and γc chain. Stimulation of BAF-B03 cells in vitro with IL-2 and IL-15 induced vigorous cell proliferation in a dose-dependent fashion. Titration of IL-2 and IL-15 in the assay showed that the mitotic effects of IL-2 and IL-15 were remarkably similar, Howerer, the sensitivities of BAF-B03 cells to Fas mediated apoptosis after IL-2 and IL-15 stimulation were strikingly different. Cells cultured in IL-2 readily underwent apoptotic cell deathupon cross-linking of the Fas receptor whereas cells cultured in IL-15 were extremely resistant to Fas triggered cell death. The anti-apoptotic effect of IL-15 in this model was associated with increased expression of Bcl-xL. FLIP expression, however, was comparable between IL-2 and IL-15 stimulated cells. We conclude that IL-2 and IL-15 have diametrically opposite effect on the fate of BAF-B03 cells, although both cytokines share similar receptor structure and exhibitsimilarmitoticactivities.Gulcin Demirci 2004Cellular & Molecular Immunology2004,1,2:4
5In vitro effect of pantoprazole on lower esophageal sphincter tone in rats显示文摘AIM:To investigate the in vitro effects of pantoprazole on rat lower esophageal sphincter(LES)tone.METHODS:Rats weighing 250-300 g,provided by the Yeditepe University Experimental Research Center(Yü-DETAM),were used throughout the study.They were anesthetized before decapitation.LES tissues whose mucosal lining were removed were placed in a stan-dard 30-mL organ bath with a modif ied Krebs solution and continuously aerated with 95% oxygen-5% carbon dioxide gas mixture and kept at room temperature.The tissues were allowed to stabilize for 60 min.Sub-sequently,the contractile response to 10-6 mol/L carba-chol was obtained.Different concentrations of freshly prepared pantoprazole were added directly to the tis-sue bath to generate cumulative concentrations of 5×10-6 mol/L,5×10-5 mol/L,and 1.5×10-4 mol/L.Activi-ties were recorded on an online computer via a 4-channeltransducer data acquisition system using the software BSL PRO v 3.7,which also analyzed the data.RESULTS:Pantoprazole at 5×10-6 mol/L caused a small,but statistically insignif icant,relaxation in the car-bachol-contracted LES(2.23% vs 3.95%).The 5×10-5 mol/L concentration,however,caused a signif icant relax-ation of 10.47% compared with the control.1.5×10-4 mol/L concentration of pantoprazol caused a 19.89% relaxation in the carbachol contracted LES(P<0.001).CONCLUSION:This is the fi rst study to demonstrate that pantoprazole has a relaxing effect in isolated LESs.These results might have signif icant clinical implications for the subset of patients using proton pump inhibitors who do not receive full symptomatic alleviation from gastroesophageal reflux disease.Mustafa Duman Mahmut zer Enver Rean Yeliz Demirci Ali E Atιcι Tahsin Dalgι Erdal B Bostancι Ece Gen 2011World Journal of Gastroenterology2011,17,46:3
6糖尿病视网膜病变患者高密度脂蛋白-3和总抗氧化能力以及NO_x水平分析(英文)显示文摘目的:比较糖尿病视网膜病变组与对照组数据,以研究高密度脂蛋白-3(HDL_3)、NO_x和总抗氧化状态之间的关系。方法:前瞻性病例对照研究。106例受试者分为3组,84例2型糖尿病有或无视网膜病变患者,对照组为22例正常人。患者均行血清高密度脂蛋白-3的浓度检测和血清NO_x水平测定。用铁还原法(FRAP)测量血浆总抗氧化能力。结果:糖尿病患者(DM)空腹血糖、糖化血红蛋白、甘油三酯显著高于对照组。正常人中HDL_3水平为14.4(12.0)mg/dL,糖尿病视网膜病变患者为18.1(12.6)mg/dL,糖尿病无视网膜病变患者为14.0(12.5)mg/dL,组间差异无统计学意义(P=0.262)。糖尿病患者FRAP水平低于对照组(P=0.003),但糖尿病视网膜病变组与非糖尿病视网膜病变组之间其差异无统计学意义。结论:研究发现:2型糖尿病视网膜病变患者、糖尿病无视网膜病变患者以及对照组间HDL和HDL_3水平无明显不同。HDL_3可能无法预测糖尿病视网膜病变患者的患病风险。糖尿病患者中血清NO_x水平较高,FRAP水平较低。Ustundag Yasemin Akdogan Müberra Demirci Hakan Günay Leyla Huysal Kagan Cevik Sadik Gorkem Barazi Ayse 2017国际眼科杂志2017,17,12:3
7H pylori infection in patients with Behcet's disease显示文摘AIM:To evaluate endoscopic findings and the prevalence of H pylori in patients with Behcet's disease (BD) who have upper gastrointestinal symptoms. METHODS:The patients with BD diagnosed according to the International Study Group and followed up in the Department of Dermatology and other related departments and who had any upper gastrointestinal complaints,were included in this study. Forty-five patients with BD and 40 patients in the control group were evaluated by upper gastrointestinal endoscopy and two biopsied specimens were taken during endoscopy for H pylori . A two-week triple therapy for H pylori eradication was administered to H pylori positive patients. Two months after the treatment,the patients were evaluated by urea-breath test for eradication control. RESULTS:Patients with BD had a mean age of 36.2 ± 11.4 years (18-67 years). The mean follow-up time was 35 ± 14 mo (16-84 mo). Aphthous or deep ulcer in esophagus,stomach and duodenum had never been confirmed by endoscopic examination. Most gastric lesions were gastric erosion (40%) and the most duodenal lesions were duodenitis (17.5%) in two groups. H pylori was positive in 33 patients (73.3%) with BD. The two-week triple eradication therapy was successful in 75% of the patients. There was no difference between the groups in respect to prevalence of H pylori (73.3% vs 75%,P > 0.05),and eradication rate (75% vs 70%,P > 0.05). CONCLUSION:Endoscopic findings,eradication rate and prevalence of H pylori were similar in patients withBD and control group.Osman Ersoy Reyhan Ersoy Ozlem Yayar Huseyin Demirci Semih Tatlican 2007World Journal of Gastroenterology2007,13,21:3
8Cobalt,a reactive metal in releasing hydrogen from sodium borohydride by hydrolysis:A short review and a research perspective显示文摘Cobalt is commonly admitted as being a promising catalyst in accelerating NaBH4 hydrolysis,being as reactive as noble metals and much more cost-effective.This is the topic of the present paper.Herein,we survey(i) the NaBH4-devoted literature while especially focusing on the Co catalysts and(ii) our work on the same topic.Finally,we report(iii) reactivity results of newly developed Co-based catalysts.From both surveys,it mainly stands out that Co has been investigated as catalysts in various forms:namely,as chlorides,reduced nanoparticles(metal Co,Co boride,Co-B alloy),supported over supports and shaped.In doing so the reactivity can be easily varied achieving H2 generation rates from few to >1000 L(H2)/min·g(metal).Nevertheless,our work can be distinguished from the NaBH4 literature.Indeed,we are working on strategies that focus on making alternative Co-based catalysts.One of these strategies is illustrated here as we report new reactivity data of Co-based bimetallic supported catalysts.For example,we show that 20 wt% Co90Y10/γAl2O3-20 wt% Co95Hf5/γAl2O3 > 20 wt% Co99Zr1/γAl2O3 > 20 wt% Co/γAl2O3,the best catalysts showing HGRs of about 245 mL(H2)/min or 123 L(H2) /min·g(metals).DEMIRCI Umit B AKDIM Ouardia HANNAUER Julien CHAMOUN Rita MIELE Philippe 2010Science China Chemistry2010,53,9:3
9An Integrated Workflow for DNA Methylation Analysis显示文摘The analysis of cytosine methylation provides a new way to assess and describe epigenetic regulation at a whole-genome level in many eukaryotes.DNA methylation has a demonstrated role in the genome stability and protection,regulation of gene expression and many other aspects of genome function and maintenance.BS-seq is a relatively unbiased method for profiling the DNA methylation,with a resolution capable of measuring methylation at individual cytosines.Here we describe,as an example,a workflow to handle DNA methylation analysis,from BS-seq library preparation to the data visualization.We describe some applications for the analysis and interpretation of these data.Our laboratory provides public access to plant DNA methylation data via visualization tools available at our 'Next-Gen Sequence' websites(http://gffzz6bc3b4d9dcb04306h0qkovo6c69wu6f59.ffgz.tsg.suse.edu.cn),along with small RNA,RNA-seq and other data types.Pingchuan Li Feray Demirci Gayathri Mahalingam Caghan Demirci Mayumi Nakano Blake C.Meyers 2013Journal of Genetics and Genomics2013,40,5:2
10Inhibitory Receptors of the Immune System:Functions and Therapeutic Implications显示文摘The immune system has a remarkable ability to respond to seemingly endless antigens.In essence,a productive immune response takes place along a well defined but treacherous line,that is to effectively eradicate pathogens,and at the same time avoid causing damage to self organs.This type of response is fine-tuned,at least in part,by a complex array of pathways that either promote or inhibit the activation of innate and adaptive immune cells.Much effort has been focused on pathways that can support immune activation.In this article,we review specifically pathways that can inhibit immune responses and maintain immune homeostasis,highlighting our recent understanding on the role of inhibitory receptors that selectively engage the self MHC class I molecules and the B7 superfamily members,we also discuss the inhibitory Fc receptors and inhibitory cytokines and how such pathways,either individually or collectively,regulate innate and adaptive immune responses.Finally,we summarize new emerging approaches on how such negative pathways can be therapeutically modulated in various disease settings.Jian Zhang Xiang Xiao Wentao Liu Gulcin Demirci Xian C.Li 2009Cellular & Molecular Immunology2009,6,6:2
11Lactic acid production in a mixed- culture biofilm reactor显示文摘DEMIRCI A POMETTO A Johnson K 1993Appl Environ Microbiol1993,59,:1
12Discontinuous Sturm-Liouville Problems with Eigenparameter-dependent Boundary and Transmissions Conditions显示文摘Akdogan Z Demirci M Mukhtarov O S 2005Acta Applicandae Mathematacae2005,86,3:1
13Normal gestations and live births after orthotopic autograft of vitrified - warmed hemi - ovaries into ewes显示文摘Bordes A Lomage J Demirci B 2005Human Reproduction2005,20,10:1
14Electrolyzed oxidizing water treatment for decontamination of raw salmon inoculated with Escherichia coliO157:H7 and Listeria monocytogenes Scott A and response surface modeling显示文摘OZER N P DEMIRCI A 2006Journal of Food Engineering2006,72,:1
15Retroperitoneoscopic ureterolithotomy for the treatment of ureteral calculi 显示文摘Demirci D Gulmez I Ekmekqioglu O 2004Urol Int2004,73,3:1
16Forward-Viewing CMUT Arrays for Medical Imaging显示文摘Demirci U Ergun A S Oralkan O 2004IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control2004,51,7:1
17Restoration of ovarian steroid secretion and histologic assessment after freezing, thawing, and autograft of a hemi-ovary in sheep 显示文摘Salle B Lornage J Demirci B 1999Fertil Steril1999,72,2:1
18Goseki grade and tumour location influence survival of patients with gastric cancer显示文摘Calik M Calik I Demirci E 2014Asian Pac J Cancer Prev: APJCP2014,15,:1
19Novel pH-Responsive Mixed-Charge Copolymer Brushes Based onCarboxylic Acid and Quaternary Amine Monomers 显示文摘Demirci S Kinali-Demirci S Caykara T 2013Journal of Polymer Science Part A : Polymer Chemistry2013,51,7:1
20Periorbital necrotizingfasciitis with visual loss pathogenesis and treatment 显示文摘Elner VM Demirci H Nerad JA 2006Ophthalmology2006,113,12:1
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