108 results on '"Ozmen F"'
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2. ASSESSMENT OF DIET QUALITY OF ADOLESCENTS BY HEALTHY EATING INDEX
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Ozmen, F., Erdem, N. Z., Ozmen, F., and Erdem, N. Z. Istanbul Medipol Univ, Fac Hlth Sci, Dept Nutr & Dietet, Istanbul, Turkey
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23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO) -- SEP 26-29, 2018 -- Dubai, U ARAB EMIRATES WOS: 000445203702246 … Int Federat Surg Obes & Metab Disorders, Emirates Soc Metab & Bariatr Surg
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- 2018
3. ASSOCIATION BETWEEN HLA CLASS II ALLELES AND MORBID OBESITY Basic science and research in bariatric surgery
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Ozmen, F., Ergen, G. O., Sahin, T. T., Ozmen, Mehmet Mahir, İstinye Üniversitesi, Tıp Fakültesi, Cerrahi Tıp Bilimleri Bölümü, and Ozmen, Mehmet Mahir
- Abstract
24th World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO) / 21st SECO Congress -- SEP 03-07, 2019 -- Madrid, SPAIN Background and Aims: Morbid obesity is a multifactorial disease. Adiposity hypertrophia and activation of immune cells play very important roles in obesity pathogenesis. Human Leukocyte Antigen (HLA) class II HLA-DR and HLA-DQ loci are also related to some inflammatory and autoimmune diseases. The present study aims to analyze the association of HLA-DRB1 and HLA-DQB1 alleles with morbid obesity disease. Int Federat Surg Obes & Metab Disorders, SECO WOS:000480523000159 Q1
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- 2019
4. The prevalence of Factor V (G1691A) and methylenetetrahydrofolate reductase (C677T) gene mutations in Turkish patients with arterial thrombosis
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Ozmen, F., Ozmen, M.M., Akar, E., Ozalp, N., and Akar, N.
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- 1998
5. The relationship of Netrin-1 expression with macrophage infiltration and polarization in human epicardial adipose tissue and severity of coronary artery disease
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Gurses, K.M., primary, Ozmen, F., additional, Kocyigit, D., additional, Yersal, N., additional, Bilgic, E., additional, Kaya, E., additional, Kopru, C., additional, Soyal, T., additional, Doganci, S., additional, Tokgozoglu, L., additional, and Korkusuz, P., additional
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- 2016
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6. What is the Optimal Evaluation Time of the QT Dispersion After Acute Myocardial Infarction for the Risk Stratification?
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Kabakci, G., Onalan, O., Batur, M. Kemal, Yildirir, A., Cagrikul, R., Acil, T., Tokgozoglu, L., Oto, A., Ozmen, F., and Kes, S.
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Heart attack -- Evaluation -- Research ,Risk assessment -- Research ,Health - Abstract
The sequential changes of the corrected QT dispersion (QTcD) were studied in 136 patients 1 day to 30 days after a transmural acute myocardial infarction (AMI) to investigate the optimal [...]
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- 2001
7. 6522 Adjuvant chemoradiotherapy with continious infusion 5-fluorouracil and bi-weekly cisplatin and infusional 5-fluorouracil for operated locally advanced gastric cancer
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Dogan, U., primary, Abali, H., additional, Ozmen, F., additional, Oksuzoglu, B., additional, Aslan, N., additional, Ozdemir, N., additional, Budakoglu, B., additional, Guler, T., additional, Tumoz, M., additional, and Zengin, N., additional
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- 2009
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8. Analysis of Doppler radar windshear data
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Williams, F, Mckinney, P, and Ozmen, F
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Air Transportation And Safety - Abstract
The objective of this analysis is to process Lincoln Laboratory Doppler radar data obtained during FLOWS testing at Huntsville, Alabama, in the summer of 1986, to characterize windshear events. The processing includes plotting velocity and F-factor profiles, histogram analysis to summarize statistics, and correlation analysis to demonstrate any correlation between different data fields.
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- 1989
9. Stimulation of cinnabarinic acid production in batch cultures of Pycnoporus cinnabarinus
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Kasikara Pazarlioglu, Nurdan, primary, Kuzucu, M., additional, Ozmen, F., additional, Karani, O.R., additional, Ardag Akdogan, Hatice, additional, Gocenoglu, Asli, additional, Cigdem Ucar, M., additional, and Erden, Emre, additional
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- 2008
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10. Clinical and pharmacological variables as a risk factor for nifedipine-induced gingival overgrowth
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Guncu, GN, primary, Caglayan, F., additional, Dinçel, A., additional, Bozkurt, A., additional, Ozmen, F., additional, and Karabulut, E., additional
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- 2007
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11. Mass-like appearance of a saphenous vein graft
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OZER, N, primary, CIFTCI, O, additional, and OZMEN, F, additional
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- 2006
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12. 870 Assessment of left atrial appendage wall velocities in patients with stroke
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OZER, N, primary, KYLIC, H, additional, ABALY, G, additional, AY, H, additional, ATALAR, E, additional, AKSOYEK, S, additional, OVUNC, K, additional, TOKGOZOOLU, L, additional, OZMEN, F, additional, and KES, S, additional
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- 2003
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13. Decreased soluble L-selectin levels do not indicate leukocyte activation
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Atalar, E., Aytemir, K., and Ozmen, F.
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Health care industry - Abstract
Byline: E. Atalar (1), K. Aytemir (1), F. Ozmen (1) Author Affiliation: (1) Hacettepe University, Faculty of Medicine, Cardiology Department, Sihhiye, Ankara, 06 100 Turkey e-mail: enveratalar@hotmail.com Tel.: + 00 90-3 12-2 41 01 67 Fax: + 00 93-3 12-3 25 50 10, TR Article note: Accepted: 1 February 2000
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- 2000
14. QT dispersion as a predictor of arrhythmic events in patients with ankylosing spondylitis
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Yildirir, A., primary, Aksoyek, S., additional, Calguneri, M., additional, Aytemir, K., additional, Kabakci, G., additional, Ovunc, K., additional, Nazlı, N., additional, Ozmen, F., additional, Oto, A., additional, and Kes, S., additional
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- 2000
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15. Prevalence of coronary artery disease before valvular surgery in patients with rheumatic valvular disease.
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Atalar E, Yorgun H, Canpolat U, Sunman H, Kepez A, Kocabas U, Ozer N, Ovünç K, Aksöyek S, Ozmen F, Atalar, Enver, Yorgun, Hikmet, Canpolat, Uğur, Sunman, Hamza, Kepez, Alper, Kocabaş, Uğur, Ozer, Necla, Ovünç, Kenan, Aksöyek, Serdar, and Ozmen, Ferhan
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- 2012
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16. Mean systolic annular velocity and strain score index: new and non-invasive parameters for the evaluation of acute myocardial infarction patients.
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Kaya EB, Ozer N, Aksoy H, Deveci OS, Tülümen E, Okutucu S, Yorgun H, Atalar E, Aksöyek S, Ozmen F, Ovünç K, Kes S, and Ozkutlu H
- Abstract
Copyright of Anatolian Journal of Cardiology / Anadolu Kardiyoloji Dergisi is the property of KARE Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2010
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17. The diagnostic value of 12-lead electrocardiogram in predicting infarct-related artery and right ventricular involvement in acute inferior myocardial infarction.
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Kabakci, Giray, Yildirir, Aylin, Yildiran, Levant, Batur, Mustafa Kemal, Cagrikul, Rasit, Onalan, Orhan, Tokgozoglu, Lale, Oto, Ali, Ozmen, Ferhan, Kes, Sirri, Kabakci, G, Yildirir, A, Yildiran, L, Batur, M K, Cagrikul, R, Onalan, O, Tokgozoglu, L, Oto, A, Ozmen, F, and Kes, S
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Background: The aim of the present study was to investigate the predictive value of presentation and 24-hour electrocardiograms in defining the infarct-related artery (IRA), its lesion segment, and the right ventricular involvement in acute inferior myocardial infarction (MI).Methods: One hundred forty-nine patients with acute inferior MI were included. Infarct-related artery, its lesion segment, and the validity of new ECG criteria for the diagnosis of right ventricular MI (RVMI) were investigated by means of criteria obtained from admission and 24- hour ECGs.Results: The presence of ST-segment elevation in lead III > lead II criterion (Criterion 1) and ST-segment depression in lead I > lead aVL criterion (Criterion 2) from admission ECG defined the right coronary artery (RCA) as IRA with a sensitivity of 64% and a specificity of 100%. These two criteria also defined the proximal or mid lesions in RCA as culprit lesions (sensitivity of 99%, specificity of 96%). Absence of these two criteria indicated Cx as IRA with a sensitivity of 50% and a specificity of 97%. The depth of Q wave in lead III > lead II criterion (Criterion 3) had no value for discrimination of IRA, but the width of Q wave in lead III > lead II criterion (Criterion 4) supported the RCA to be IRA with a sensitivity of 60% and a specificity of 61% (Criteria 3 and 4 were obtained from 24-hour ECGs). The finding of Criterion 1 plus Criterion 5 (ST elevation in V(1) but no ST elevation in V2) on admission ECG had a sensitivity of 63% and a specificity of 99% in the diagnosis of RVMI.Conclusion: We concluded that 12-lead ECG is a cheap, easy, and readily obtainable diagnostic approach in discrimination of IRA and its culprit lesion segment. However, despite high specificity, due to moderate degree sensitivity, its value for the diagnosis of RVMI is questionable. [ABSTRACT FROM AUTHOR]- Published
- 2001
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18. Doppler Tissue Evaluation of Intra-atrial and Interatrial Electromechanical Delay and Comparison with P-wave Dispersion in Patients with Mitral Stenosis
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Ozer, N., Yavuz, B., Can, I., Atalar, E., Aksoyek, S., Ovunc, K., Ozmen, F., and Kes, S.
- Abstract
Objective: The aim of our study was to: (1) measure atrial electromechanical delay in patients with mitral stenosis (MS) and in a control group; (2) find the echocardiographic parameters that affect atrial electromechanical delay; and (3) examine the correlation between atrial electromechanical delay and P-wave dispersion (PWD). Methods: A total of 25 patients with pure MS (age 43 +/- 10 years; 18 women, 7 men) and 16 control subjects (age 41 +/- 8 years; 9 women, 7 men) were studied. Interatrial and intra-atrial electromechanical delay was measured with Doppler tissue echocardiography. From the 12-lead electrocardiograms, PWD was calculated. Results: Interatrial electromechanical delay was 71.2 +/- 33 in the MS group and 40.5 +/- 21.0 in the control group (P = .01). In the MS group, PWD was 50 +/- 7 and in the control group it was 29 +/- 5 (P = .03). A positive correlation was detected between interatrial electromechanical delay and PWD (r = 0.6, P = .03). Conclusion: This study shows that interatrial electromechanical delay gets longer in MS and is correlated with PWD. Atrial electromechanical delay is related with left atrial size but not with severity of MS.
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- 2005
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19. Increased plasma levels of soluble selectins in patients with unstable angina
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Atalar, E., Aytemir, K., Haznedaroglu, I., Ozer, N., Ovunc, K., Aksoyek, S., Kes, S., Kirazl, S., and Ozmen, F.
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- 2001
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20. Right ventricular outflow tract thrombus in a case of Behcet's disease
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Ozer, N., Ciftci, O., Demirci, M., Atalar, E., Ovunc, K., Aksoyek, S., Ozmen, F., and Kes, S.
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Behcet's disease is known as a chronic systemic vasculitic syndrome, the hallmark of which is recurrent oral aphthous and genital ulcerations and uveitis. Vascular involvement, mainly thrombosis, reportedly affects as many as one-third of patients. Cardiac involvement, however, is very rare. We present in this report a young female patient developing right ventricular thrombus while being treated medically.
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- 2005
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21. Sex hormone concentrations in men do not predict the presence and extent of angiographically assessed coronary artery disease
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Aylin YILDIRIR, Kabakci, G., Can, I., Erbas, B., Unsal, I., Tokgozoglu, L., Aksoyek, S., Ovunc, K., Oto, A., Ozmen, F., and Kes, S.
22. SECONDARY HEMOPHAGOCYTIC LYMPHOHISTIOCYTOSIS DUE TO AUTOIMMUNE, HEMATOLOGIC, INFECTIOUS DISEASES IN ADULT PATIENTS
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Etgul, S., Aslan, T., Gunes, G., Umit Yavuz Malkan, Aydin, S., Ozmen, F., Aksu, S., Demiroglu, H., Sayinalp, N., Haznedaroglu, I., Goker, H., Ozcebe, O., and Buyukasik, Y.
23. Neoplastic immune mimicry is a generalizable phenomenon in breast cancer and epithelial CD69 enables early tumor progression.
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Berens EB, Khou S, Huang E, Hoffman A, Johnson B, Kirchberger N, Sivagnanam S, Calistri NL, Derrick D, Liby TA, McLean IC, Alanizi AA, Ozmen F, Ozmen TY, Mills GB, Hwang ES, Schedin PJ, Gonzalez H, Werb Z, Heiser LM, and Coussens LM
- Abstract
Dedifferentiation programs are commonly enacted during breast cancer progression to enhance tumor cell fitness. Increased cellular plasticity within the neoplastic compartment of tumors correlates with disease aggressiveness, often culminating in greater resistance to cytotoxic therapies or the augmented ability to metastasize to distant organs. Here we report that subpopulations of dedifferentiated neoplastic breast epithelial cells express canonical leukocyte cell surface receptor proteins and have thus named this cellular program "immune mimicry." We document neoplastic cells engaging in immune mimicry within public human breast tumor single-cell RNA-seq datasets, histopathological breast tumor specimens, breast cancer cell lines, as well as in murine transgenic and cell line-derived mammary cancer models. Immune-mimicked neoplastic cells harbor hallmarks of dedifferentiation and appear enriched in treatment-resistant and high-grade breast tumors. We corroborated these observations in aggressive breast cancer cell lines where growth-arresting cytotoxic chemotherapies drove epithelial cells toward immune mimicry. Moreover, in subsequent proof-of-concept studies, we demonstrate that expression of the CD69 leukocyte activation marker by neoplastic cells confers a proliferative advantage that facilitates early tumor growth. We conclude neoplastic breast epithelial cells that upregulate leukocyte surface receptors potentiate malignancy. Moving forward, neoplastic immune mimicry should be evaluated for prognostic utility in breast cancer to determine its stratification potential for patients with increased risks of tumor recurrence, metastasis, and therapeutic resistance.
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- 2025
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24. Cyclin E1/CDK2 activation defines a key vulnerability to WEE1 kinase inhibition in gynecological cancers.
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Kim D, Chung H, Liu W, Jeong K, Ozmen TY, Ozmen F, Rames MJ, Kim S, Guo X, Jameson N, de Jong PR, Yea S, Harford L, Li J, Mathews CA, Doroshow DB, Charles VJ, Kim D, Fischer K, Samatar AA, Jubb A, Bunker KD, Blackwell K, Simpkins F, Meric-Bernstam F, Mills GB, Harismendy O, Ma J, and Lackner MR
- Abstract
Upregulation of Cyclin E1 and subsequent activation of CDK2 accelerates cell cycle progression from G1 to S phase and is a common oncogenic driver in gynecological malignancies. WEE1 kinase counteracts the effects of Cyclin E1/CDK2 activation by regulating multiple cell cycle checkpoints. Here we characterized the relationship between Cyclin E1/CDK2 activation and sensitivity to the selective WEE1 inhibitor azenosertib. We found that ovarian cancer cell lines with high levels of endogenous Cyclin E1 expression or forced overexpression were exquisitely sensitive to azenosertib and these results extended to in vivo models of ovarian and uterine serous carcinoma. Models with high Cyclin E1 expression showed higher baseline levels of replication stress and enhanced cellular responses to azenosertib treatment. We found azenosertib synergized with different classes of chemotherapy and described distinct underlying mechanisms. Finally, we provided early evidence from an ongoing phase I study demonstrating the clinical activity of monotherapy azenosertib in patients with Cyclin E1/CDK2-activated ovarian and uterine serous carcinomas., Competing Interests: Competing interests: D. Kim is an employee and shareholder of Zentalis Pharmaceuticals. H. Chung is an employee and shareholder of Zentalis Pharmaceuticals. W. Liu is an employee and shareholder of Zentalis Pharmaceuticals. S. Kim is an employee and shareholder of Zentalis Pharmaceuticals. X. Guo is an employee and shareholder of Zentalis Pharmaceuticals. N. Jameson is an employee and shareholder of Zentalis Pharmaceuticals. P.R. de Jong is a former employee of Zentalis Pharmaceuticals. S. Yea is a former employee and shareholder of Zentalis Pharmaceuticals. L. Harford is a former employee and shareholder of Zentalis Pharmaceuticals. J. Li is a former employee of Zentalis Pharmaceuticals. D. Kim is an employee and shareholder of Zentalis Pharmaceuticals. K. Fischer is an employee and shareholder of Zentalis Pharmaceuticals. A. Samatar is a former employee of Zentalis Pharmaceuticals and shareholder in Zentalis Pharmaceuticals. A. Jubb is a former employee and shareholder of Zentalis Pharmaceuticals. K. Bunker is a former employee of Zentalis Pharmaceuticals and shareholder in Zentalis Pharmaceuticals. K. Blackwell is a former employee and shareholder of Zentalis Pharmaceuticals. F. Simpkins serves on scientific advisory boards for AstraZeneca, GSK and Zentalis Pharmaceuticals; has received institutional research funding from AstraZeneca, Repare Therapeutics, Instill Bio and Sierra Oncology. F. Meric-Bernstam is consultant for. AbbVie, Aduro BioTech Inc., Alkermes, AstraZeneca, Daiichi Sankyo Co. Ltd., Calibr (a division of Scripps Research), DebioPharm, Ecor1 Capital, eFFECTOR Therapeutics, Exelixis, F. Hoffman-La Roche Ltd., GT Apeiron, Genentech Inc., Harbinger Health, IBM Watson, Incyte, Infinity Pharmaceuticals, Jackson Laboratory, Jazz Pharmaceuticals, Kolon Life Science, LegoChem Bio, Lengo Therapeutics, Loxo Oncology, Menarini Group, OrigiMed, PACT Pharma, Parexel International, Pfizer Inc., Protai Bio Ltd, Samsung Bioepis, Seattle Genetics Inc., Tallac Therapeutics, Tyra Biosciences, Xencor, Zymeworks; Advisory Committee for Black Diamond, Biovica, Eisai, FogPharma, Immunomedics, Inflection Biosciences, Karyopharm Therapeutics, Loxo Oncology, Mersana Therapeutics, OnCusp Therapeutics, Puma Biotechnology Inc., Seattle Genetics, Sanofi, Silverback Therapeutics, Spectrum Pharmaceuticals, Theratechnologies, Zentalis; Received sponsored Research (to the institution) from Jazz Pharmaceuticals, Zymeworks, Aileron Therapeutics, Inc. AstraZeneca, Bayer Healthcare Pharmaceutical, Calithera Biosciences Inc., Curis Inc., CytomX Therapeutics Inc., Daiichi Sankyo Co. Ltd., Debiopharm International, eFFECTOR Therapeutics, Genentech Inc., Guardant Health Inc., Klus Pharma, Takeda Pharmaceutical, Novartis, Puma Biotechnology Inc., Taiho Pharmaceutical Co.; Honoraria for Dava Oncology; receiving travel related funding and reimbursement from European Organization for Research and Treatment of Cancer (EORTC), European Society for Medical Oncology (ESMO), Cholangiocarcinoma Foundation, Dava Oncology. G.B. Mills is scientific advisory board/Consultant for Amphista, Astex, AstraZeneca, BlueDot, Chrysallis Biotechnology, Ellipses Pharma, GSK, ImmunoMET, Infinity, Ionis, Leapfrog Bio, Lilly, Medacorp, Nanostring, Nuvectis, PDX Pharmaceuticals, Qureator, Roche, Signalchem Lifesciences, Tarveda, Turbine, Zentalis Pharmaceuticals; Stock/Options/Financial: Bluedot, Catena Pharmaceuticals, ImmunoMet, Nuvectis, SignalChem, Tarveda, Turbine; Licensed Technology: HRD assay to Myriad Genetics, DSP patents with Nanostring; Sponsored research: AstraZeneca. O. Harismendy is an employee and shareholder of Zentalis Pharmaceuticals. J. Ma is an employee and shareholder of Zentalis Pharmaceuticals. M.R. Lackner is an employee and shareholder of Zentalis Pharmaceuticals. No disclosures were reported by the other authors., (© 2025. The Author(s).)
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- 2025
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25. Sensitivity of frozen section analysis in patients with ovarian adult granulosa cell tumor, a multi-center study.
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Ureyen I, Toptas T, Tokalıoğlu A, Sahin M, Oktar O, Kole M, Alcı A, Ozturk C, Ozmen F, Akturk SE, Erdogan O, Ersak B, Kilic F, Bas S, Cakir C, Kocak O, Kilic Ç, Ucar G, Korkmaz V, Narin MA, Uncu D, Sanci M, Kimyon Comert G, Ozdal B, Tekin Moralıoglu O, Engin Ustun Y, Boran N, Taskin S, Tasci T, Ortac F, and Turan T
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- Humans, Female, Adult, Middle Aged, Aged, Retrospective Studies, Adolescent, Young Adult, Aged, 80 and over, Ascites pathology, Granulosa Cell Tumor pathology, Granulosa Cell Tumor blood, Frozen Sections, Ovarian Neoplasms pathology, Ovarian Neoplasms blood, CA-125 Antigen blood, Sensitivity and Specificity
- Abstract
Introduction: We aimed to demonstrate the sensitivity of frozen section for patients with adult granulosa cell tumor (AGCT) and analyze the clinico-pathological factors that may be associated with sensitivity., Material Methods: This is a multicenter study including data of 10 Gynecological Oncology Departments. Frozen-section results of patients who had ovarian AGCT at the final pathology report were retrospectively analyzed. The relation between clinico-pathological characteristics such as age, tumor size, Ca-125 level, presence of ascites, omental metastasis, menopausal status and peritoneal cytology, and the sensitivity of frozen section in patients with AGCT were evaluated. The sensitivity of frozen section diagnosis was determined by comparing the frozen section result with the final pathological diagnosis., Results: Frozen section results of 274 patients with AGCT were obtained. The median age of the patients was 52 years (range, 17-82 years). Totally, 144 (52.7%, n = 273) patients were postmenopausal. The median tumour size was 90 mm (range, 9-700 mm). The median preoperative Ca-125 level was 23 IU/mL (range, 2-995 IU/mL). The sensitivity of frozen section for detecting AGCT was 76.3%. Any association between the sensitivity of frozen section and menopausal status, presence of ascites, positive cytology, omental metastasis, tumor size, Ca-125 level, age could not be shown., Conclusion: It is important to know the diagnosis of AGCT intraoperatively, and we demonstrated the sensitivity of frozen-section for these tumors as 76.3%., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2024
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26. Changes in serum ghrelin and resistin levels after sleeve gastrectomy versus one anastomosis gastric bypass: prospective cohort study.
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Ozmen F, Şahin TT, Dolgun A, and Ozmen MM
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- Humans, Prospective Studies, Female, Male, Adult, Middle Aged, Obesity, Morbid surgery, Obesity, Morbid blood, Weight Loss physiology, Cohort Studies, Ghrelin blood, Resistin blood, Gastrectomy methods, Gastrectomy adverse effects, Gastric Bypass methods
- Abstract
Introduction: Humoral factors and neural mechanisms play a central role in the pathogenesis of obesity and in weight loss following bariatric surgery. Although various hormones and adipokines, including ghrelin and resistin, are linked to obesity, studies analyzing the changes in fasting ghrelin and resistin levels in patients following one anastomosis gastric bypass (OAGB) are lacking., Aim: The authors aimed to investigate resistin and ghrelin levels before and after two commonly used bariatric procedures with different mechanisms of action: sleeve gastrectomy (SG) and OAGB., Patients and Methods: Fasting serum ghrelin and resistin levels were evaluated by using ELISA in a nonrandomized, prospective cohort study for the pattern of changes in the preoperative period and 1 week, 1 month, 3 months and, 12 months after surgery in age and sex-matched patients with BMI ≥40 kg/m 2 undergoing either SG ( n =40) or OAGB ( n =40). Their relationships with demographic parameters such as body weight, BMI, presence of T2DM, HbA 1 C, and Homeostatic Model Assessment for Insulin Resistance (HOMA-IR) index were also evaluated., Results: OAGB was superior in weight control compared to the SG group. There were significant differences in resistin and ghrelin levels between the OAGB and SG groups. Ghrelin decreased more in the SG group than the preoperative values. This change in ghrelin levels was more significant at 1 year after SG [preoperative mean (range) level of 334.2 (36.6-972.1) pg/ml decreased to 84 (9.1-227) pg/ml at 1 year] whereas in the OAGB group no significant change was observed [preoperative mean (range) level of 310 (146-548) pg/ml decreased to 264 (112-418) pg/ml at 1 year]. Resistin levels decreased in both groups, especially after 3 months and onward following both operations [the mean (range) resistin levels were 2.6 (0.87-5.4) ng/ml and decreased to 1.1 (0.5-2.4) ng/ml in the SG group vs 2.48 (0.89-6.43) ng/ml decreased to 0.72 (0.35-1.8) ng/ml in OAGB group at 1 year], which was in parallel with changes in HOMA-IR index, body weight, and BMI changes at 1st year. HOMA-IR index changes were similar, but more prominent after OAGB. OAGB was als3 three months and onward), and HOMA-IR changes., Conclusion: This is the first study to compare fasting ghrelin and resistin levels after OAGB and SG. Although similar changes were observed, ghrelin changes were more prominent after SG, whereas resistin were observed after OAGB. OAGB was superior in T2DM control, which was in parallel with weight loss, fasting resistin levels, and HOMA-IR changes suggesting a possible effect of resistin after OAGB in glucose metabolism and insulin resistance., (Copyright © 2024 The Author(s). Published by Wolters Kluwer Health, Inc.)
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- 2024
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27. Defining the relationship between ovarian adult granulosa cell tumors and synchronous endometrial pathology: Does ovarian tumor size correlate with endometrial cancer?
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Tokalioglu AA, Oktar O, Sahin M, Ozturk C, Erdogan O, Yildirim HEK, Ucar Y, Kilic F, Ersak B, Yalcin N, Ozmen F, Alci A, Bas S, Gorgulu G, Selcuk I, Ucar G, Kocak O, Cakir C, Kilic C, Comert GK, Ureyen I, Toptas T, Narin MA, Tasci T, Taskin S, Boran N, Ozdal B, Sanci M, Uncu D, Korkmaz V, Tekin OM, Ustun Y, Ortac F, and Turan T
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- Adult, Humans, Female, Retrospective Studies, Granulosa Cell Tumor surgery, Endometrial Hyperplasia, Ovarian Neoplasms pathology, Endometrial Neoplasms pathology
- Abstract
Objective: The main feature of adult granulosa cell tumors (AGCT) is their capacity to secrete hormones, with nearly all of them capable of synthesizing oestradiol. The primary goal of this study is to identify synchronized endometrial pathologies, particularly endometrial cancer, in AGCT patients who had undergone a hysterectomy., Materials and Methods: The study cohort comprised retrospectively of 316 AGCT patients from 10 tertiary gynecological oncology centers. AGCT surgery consisted of bilateral salpingo-oophorectomy, hysterectomy, peritoneal cytology, omentectomy, and the excision of any suspicious lesion. The median tumor size value was used to define the relationship between tumor size and endometrial cancer. The relationship between each value and endometrial cancer was evaluated., Results: Endometrial intraepithelial neoplasia, or hyperplasia with complex atypia, was detected in 7.3% of patients, and endometrial cancer in 3.1% of patients. Age, menopausal status, tumor size, International Federation of Gynecology and Obstetrics stage, ascites, and CA-125 level were not statistically significant factors to predict endometrial cancer. There was no endometrial cancer under the age of 40, and 97.8% of women diagnosed with endometrial hyperplasia were over the age of 40. During the menopausal period, the endometrial cancer risk was 4.5%. Developing endometrial cancer increased to 12.1% from 3.2% when the size of the tumor was >150 mm in menopausal patients (p = 0.036)., Conclusion: Endometrial hyperplasia, or cancer, occurs in approximately 30% of AGCT patients. Patients diagnosed with AGCT, especially those older than 40 years, should be evaluated for endometrial pathologies. There may be a relationship between tumor size and endometrial cancer, especially in menopausal patients., (© 2024 Japan Society of Obstetrics and Gynecology.)
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- 2024
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28. Prognostic role of serum cytokines and soluble HLA-G levels in children with leukemia who undergo allogeneic stem cell transplantation.
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Kaya Z, Yüce D, Kirkiz S, Koçak Ü, and Ozmen F
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- Child, Cytokines, HLA-G Antigens, Humans, Interleukin-10, Interleukin-2, Interleukin-4, Prognosis, Recurrence, Tumor Necrosis Factor-alpha, Hematopoietic Stem Cell Transplantation, Leukemia therapy
- Abstract
This is the first study to have investigated the prognostic role of cytokines and soluble human leukocyte antigen-G (sHLA-G) levels in pediatric leukemia patients who have undergone allogeneic stem cell transplantation (allo-SCT). Forty-one patients with acute leukemia (n = 28, acute lymphoblastic leukemia (ALL) and n = 13, acute myeloblastic leukemia) were recruited. Patients were examined at diagnosis (n = 26), in the pre-transplantation period (PreTx) (n = 26), on the day of transplantation (Tx
0 ) (n = 41), and on post-transplantation Days 14 (PostTx14 ) (n = 41) and 28 (PostTx28 ) (n = 41). Serum levels of pro-inflammatory cytokines (interleukin [IL]-1, IL-2, IL-6, Tumor necrosis factor [TNF]-α), anti-inflammatory cytokines (IL-4, IL-10), and sHLA-G were measured by Enzyme-Linked ImmunoSorbent Assay. Median levels of all cytokines tested and sHLA-G were significantly higher at diagnosis and at the post-transplant time points than at PreTx (all p < 0.05). At the time of diagnosis (specifically ALL) and at PostTx14 , elevated IL-4, IL-10, and/or sHLA-G were associated with higher post-transplant relapse rates (all p < 0.05). Elevated IL-2 and TNF-α at Tx0 were associated with lower survival rates (both p < 0.05). Levels of serum cytokines and sHLA-G may be useful predictors of survival and relapse in pediatric leukemia patients who undergo allo-SCT., (Copyright © 2022 Elsevier Ltd. All rights reserved.)- Published
- 2022
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29. Interleukin-21 and Interleukin-32 gene expression levels and their relationship with clinicopathological parameters in colorectal cancer.
- Author
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Ozmen F, Erdem GO, Kulacoglu S, Ozmen M, and Kansu E
- Subjects
- Gene Expression, Humans, Prognosis, Tumor Microenvironment, Interleukin-21, Colorectal Neoplasms genetics, Colorectal Neoplasms pathology, Interleukins genetics
- Abstract
Background and Aims: The immune cells in tumor microenvironment release chemokines and cytokines which determine the immune phenotype of the tumor and play an important role in the prognosis. Present study evaluates the gene expression levels of IL-21 and IL-32 and their relations to clinicopathologic parameters in colorectal cancer., Patients and Methods: 31(17F) patients with colorectal cancer were included. Samples were obtained from normal and tumor tissues. After RNA isolation, IL-21 and IL-32 gene expression levels were measured. Immunohistochemistry was also carried out for CD4+, CD8+ and NKcells to measure cell density. The relations between expression levels, immune cell density and differentiation, stage, presence of vascular, perineural invasion and lymph node metastasis(MLN) were investigated., Results: IL-32 gene expression levels were increased in tumor tissues. IL-21 levels were found to be decreased in 50% of the patients. IL-32 levels were also increased with the stage however, it was decreased significantly with the increased number of the MLN. On the other hand, expression levels of IL-21 increased significantly with the presence of vascular invasion. CD4+ density was decreased with increased T-stage, vascular invasion whereas CD8+ density decreased only with the vascular invasion., Conclusions: IL-32 expressed by tumor microenvironment reveals that expression increased to control tumor growth, but levels are decreased with the increased number of MLNs which might be due to decreased CD4+ cell density. Changes on IL-21 and IL-32 together with the changes on immune cell density, indicate their role in tumor growth and invasion in colon cancer., Key Words: Colorectal Cancer, Cytokines, Immune Cell Density, Interleukin-21, Interleukin-32, Tumor Microenvironment.
- Published
- 2022
30. All in One: Clozapine-Associated Acute Pancreatitis With Multiple Organ Involvement.
- Author
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Yildiz MI, Karacam Dogan M, Mutlu E, Abdullayeva L, Ozmen F, and Ertugrul A
- Subjects
- Adult, Antipsychotic Agents administration & dosage, Clozapine administration & dosage, Female, Humans, Schizophrenia drug therapy, Antipsychotic Agents adverse effects, Clozapine adverse effects, Pancreatitis chemically induced
- Published
- 2021
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31. The Effect of Bariatric Surgery on Exocrine Pancreatic Function.
- Author
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Ozmen MM, Gundogdu E, Guldogan CE, and Ozmen F
- Subjects
- Gastrectomy, Humans, Weight Loss, Bariatric Surgery, Gastric Bypass, Obesity, Morbid surgery
- Abstract
Introduction: After bariatric surgery (BS), patients might suffer from nutrient maldigestion, malabsorption, and vitamin deficiencies. In this study, our aim was to assess pancreatic functions after BS using fecal elastase-1 assay (FE-1)., Material and Methods: Sixty patients (21M) undergoing BS and 20 (6M) healthy controls were included into the study. Stool samples were collected 1 year after surgery. Ten patients from one anastomosis gastric bypass (OAGB) and single anastomosis duodenal switch (SADS) groups with the lowest value of FE-1 and GIQLI scores were given pancreatic enzyme replacement therapy (PERT). After PERT, FE-1, excess weight loss (EWL), BMI, GIQLI scores, and vitamin D levels were measured., Results: Vitamin D levels were detected as 19.04 (9-46.5) pg/ml, 15.1 (8.4-23.6) pg/ml, 17.8 (5-30) pg/ml, and 21.79 (11-40.3) pg/ml after sleeve gastrectomy (SG), OAGB, SADS, and control groups, respectively (p = 0.04). GIQLI scores in the first year were found to have increased in all patients (p = 0.02). FE-1 levels were found as 642.35 (566.3-711.4) μg/g, 378.52 (183.5-561.1) μg/g, 458.88 (252.5-593, 5) μg/g, and 518.2 (351.6-691) μg/g for the SG, OAGB, SADS, and control groups, respectively. There was a strong inverse correlation between EWL and FE-1 levels at the end of the first year (Spearman's rho = - 0.688, p = 0.003). After having performed PERT for patients with the lowest FE-1 levels, the levels increased to 683.39 (615.5-720) μg/g in the OAGB and 691.5 (643.1-720) μg/g in the SADS groups (p = 0.011)., Conclusion: FE-1 measurements demonstrated that many patients suffer from malabsorption after OAGB or SADS, whereas functions remain normal after SG. PERT corrects pancreatic functions without affecting weight loss and also contributes to the normal serum level of vitamin D.
- Published
- 2021
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32. D2 vs D2 Plus Para-aortic Lymph Node Dissection for Advanced Gastric Cancer.
- Author
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Ozmen MM, Zulfikaroglu B, Ozmen F, Moran M, Ozalp N, and Seckin S
- Abstract
Objectives: Gastric cancer is a common malignancy worldwide. Effective treatment by interdisciplinary cooperation is important, and surgery still plays an important role., Material and Methods: In a ten-year period, 355 patients were diagnosed to have gastric cancer. One hundred and sixty-two patients with a median (range) age of 58 (23-83) years were eligible for the study. There were 107 patients in D2 and 55 patients in D2 lymphadenectomy plus para-aortic lymph node (PALN) dissection group. The two groups were compared in terms of complications, morbidity, mortality and long-term survival., Results: Length of stay was 12 (8-34) days for D2 and 14 (8-42) days for D2 plus PALND. Total number of operative mortality was 8/162 (5%), and it was not different between the groups. Twenty patients (18%) had complications in D2 group and 9 (17%) patients in D2 plus PALND group. Overall survival was also similar between the groups, but patients with T3-T4 tumors, patients with stage IIIA and IIIB disease had better survival with D2 plus PALN dissection. We found that the depth of invasion, PLN, ratio (PLN/TLN), stage and LND were all prognostic variables., Conclusion: This study showed that D2 plus PALN dissection for advanced gastric cancer can be performed as safely as a standard D2 dissection by experienced surgeons without increasing postoperative morbidity and mortality. D2 plus PALN dissection should be preferred in the advanced stage of the disease (IIIA-IIIB) as it increases the rate of survival., Competing Interests: Conflict of Interest: The authors declare that they have no conflict of interest., (Copyright © 2021, Turkish Surgical Society.)
- Published
- 2020
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33. Association of class II human leukocyte antigen (HLA) alleles with pulmonary sarcoidosis.
- Author
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Esendagli D, Ozmen F, Koksal D, Onder S, and Emri S
- Abstract
Background and objectives: Sarcoidosis is a systemic inflammatory disease of unknown etiology that involves any part of the body, mainly the lungs and thoracic lymph nodes. The clinical presentation is heterogeneous based on the degree and extent of organ involvement. The existence of variable clinical presentations and treatment responses suggest an important role of genetic predisposition. In genetic studies, sarcoidosis was found to be associated with several genes, but the strongest link was with HLA region. The aim of this study was to investigate the association of HLA class II alleles with the extent and course of disease in Turkish patients with sarcoidosis. Methods: The study included 103 patients with sarcoidosis and 100 unrelated healthy controls. HLA-DRB1 and HLA-DQB1 typing was performed by using Polymerase Chain Reaction-Sequence Specific Priming (PCR-SSP) method at low resolution level. Results: HLA-DRB1* and -DQB1* analysis revealed that while the frequency of HLA-DRB1*01 was significantly higher in the control group, HLA-DRB1*13 and -DQB1*06 alleles were more frequent in the sarcoidosis patients. When the patients were grouped based on clinical outcome as remitters and non-remitters, HLA-DRB1*10 allele was only detected in the remitters, whereas the frequency of HLA-DQB1*06 allele was significantly higher in non-remitters. Conclusions: This study supported the association of HLA alleles with sarcoidosis. In a considerably high number of patients with Turkish origin, the frequency of HLA-DRB1*13, -DRB1*10 and HLA-DQB1*06 alleles was significantly associated with increased risk and clinical outcome. (Sarcoidosis Vasc Diffuse Lung Dis 2018; 35: 143-149) ., (Copyright: © 2018.)
- Published
- 2018
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34. Netrin-1 is associated with macrophage infiltration and polarization in human epicardial adipose tissue in coronary artery disease.
- Author
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Gurses KM, Ozmen F, Kocyigit D, Yersal N, Bilgic E, Kaya E, Kopru CZ, Soyal T, Doganci S, Tokgozoglu L, and Korkusuz P
- Subjects
- Adipose Tissue immunology, Adipose Tissue metabolism, Aged, Coronary Artery Bypass, Coronary Artery Disease surgery, Female, Gene Expression, Humans, Interleukin-12 genetics, Interleukin-18 genetics, Male, Middle Aged, Netrin Receptors, Netrin-1, Pericardium immunology, Pericardium metabolism, Receptors, Cell Surface genetics, Coronary Artery Disease genetics, Coronary Artery Disease immunology, Macrophages immunology, Nerve Growth Factors genetics, Tumor Suppressor Proteins genetics
- Abstract
Background: Inflammatory activity originating from the epicardial adipose tissue (EAT) may have a role in coronary artery disease (CAD) pathogenesis. The relationship between macrophage infiltration, polarization in the EAT, and netrin-1 gene expression was investigated., Methods: Macrophage infiltration and polarization were examined by immunohistochemical methods and expression levels of netrin-1, Unc5b, and cytokines related with M1-macrophage subtype (IL-12 and IL-18) were determined by quantitative polymerase chain reaction in subcutaneous and epicardial adipose tissue obtained from patients undergoing coronary artery bypass grafting and non-coronary cardiac surgery., Results: CAD patients had higher CD68+ (p=0.005) and CD11c+ (p<0.001) macrophage count in EAT when compared to the controls. CD11c+/CD206+ macrophage ratio, which reflects dominancy of M1-macrophage phenotype, was significantly increased in EAT of CAD patients when compared to that of the controls (p=0.008). CAD patients had significantly higher netrin-1, Unc5b, and IL-18 gene expression in the EAT when compared to the control group (p<0.001, p<0.001, and p=0.006 respectively). Increased macrophage infiltration and polarization were associated with higher netrin-1, Unc5b, and IL-12 gene expression in EAT (p<0.05)., Conclusions: Findings suggest a link between enhanced netrin-1 expression in EAT and macrophage infiltration and polarization in patients with CAD., (Copyright © 2016 Japanese College of Cardiology. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2017
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35. STEAP4 and HIF-1α gene expressions in visceral and subcutaneous adipose tissue of the morbidly obese patients.
- Author
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Ozmen F, Ozmen MM, Gelecek S, Bilgic İ, Moran M, and Sahin TT
- Subjects
- Adolescent, Adult, Female, Humans, Male, Middle Aged, Obesity, Morbid genetics, Real-Time Polymerase Chain Reaction, Transcriptome, Young Adult, Hypoxia-Inducible Factor 1, alpha Subunit biosynthesis, Intra-Abdominal Fat metabolism, Membrane Proteins biosynthesis, Obesity, Morbid metabolism, Oxidoreductases biosynthesis, Subcutaneous Fat metabolism
- Abstract
Aim and Background: Obesity is a multifactorial disease in which environmental and genetic factors play an integrated role. Determining such target genes will help to elucidate the mechanisms underlying complex diseases such as obesity and diabetes which are usually seen together. Present study investigates the expression levels of STEAP4 and HIF-1α in visceral and subcutaneous adipose tissue., Patients and Methods: 30(6M) morbidly obese patients undergoing bariatric surgery were included in the study. The patients were grouped according to the BMI as Group I (BMI <50kg/m(2)) and Group II (BMI ≥50kg/m(2)). Samples from visceral (omentum) and subcutaneous adipose tissues were obtained from each patient and real-time PCR (qPCR) was carried out for STEAP4 and HIF-1α gene expressions. Correlations between expression levels and clinical parameters were analyzed., Results: Mean age of the patients recruited to the study was 37.4 (18-64) years. Mean BMI was 46 (36-60) kg/m(2). STEAP4 expression in visceral adipose tissue was significantly higher than subcutaneous tissue. Visceral STEAP4 expression was also found to be reduced with increased BMI. It was also lower in patients with HbA1C over 6. Furthermore, expression of subcutaneous and visceral HIF-1α was significantly higher in Group II. There was a significant correlation between BMI, glycosylated hemoglobin, STEAP4 and HIF-1α gene expression., Conclusions: Obesity and related disease are linked with the fact that there is a low grade inflammation in the adipose tissue of the obese individuals. Counter-regulatory processes such as STEAP4 protein family are overwhelmed by the proinflammatory stimuli. HIF-1α expression is increased due to tissue hypoxia and pro-inflammatory stimuli in the obese individuals, which results in increased visceral STEAP4 expressions., (Copyright © 2016 Elsevier Ltd. All rights reserved.)
- Published
- 2016
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36. Type of anesthesia affects neonatal wellbeing and frequency of transient tachypnea in elective cesarean sections.
- Author
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Ozden Omaygenc D, Dogu T, Omaygenc MO, Ozmen F, Albayrak MD, Babur Guler G, Kocer Gur E, and Ozenc E
- Subjects
- Adult, Apgar Score, Blood Gas Analysis, Female, Humans, Incidence, Infant Welfare, Infant, Newborn, Male, Pregnancy, Retrospective Studies, Anesthesia, Obstetrical adverse effects, Anesthesia, Obstetrical methods, Cesarean Section adverse effects, Cesarean Section statistics & numerical data, Elective Surgical Procedures adverse effects, Elective Surgical Procedures statistics & numerical data, Infant Health, Transient Tachypnea of the Newborn epidemiology
- Abstract
Objective: We aimed to assess whether the type of anesthesia in cesarean section (C/S) (spinal anesthesia, SA versus general anesthesia, GA) has an effect or not on umblical vein blood gas analysis and APGAR scores of term neonates and development of transient tachypnea of the newborn (TTN)., Methods: The data of 172 procedure (85, GA versus 87, SA) were collected retrospectively. Results of umblical vein blood gas analysis, APGAR scores at first and fifth minutes and presence of TTN from in-hospital files' of neonates were examined., Results: Neonates in the SA group had significantly higher first and fifth minute APGAR scores (8, 7 versus 9, 2, p < 0.001 and 9, 3 versus 10, 2, p = 0.017, respectively). The pH value of umblical vein samples were higher (7.30 ± 0.05 versus 7.32 ± 0.05, p = 0.029) and pO2 and SaO2 levels were significantly lower in the SA group (34.8 ± 13.8 mmHg versus 27.6 ± 14.5 mmHg; p = 0.001 and 56.6% ± 18.7 versus 49.8% ± 21.4; p = 0.029, respectively) as compared to the GA group. Thirteen neonates in the GA group (15.3%) and five in the SA group (5.7%) were diagnosed as TTN (p = 0.048)., Conclusion: In our study, considerable determinants of fetal wellbeing was stated to be higher in C/S performed under SA in comparison to GA. Furthermore, our findings favor SA for avoidance of TTN.
- Published
- 2015
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37. Current adjuvant therapeutic approaches for pancreatic cancer.
- Author
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Ozmen F, Şahin TT, and Ozmen MM
- Subjects
- Antineoplastic Agents pharmacology, Humans, Molecular Targeted Therapy methods, Neoplasm Staging, Pancreatic Neoplasms pathology, Treatment Outcome, Bevacizumab pharmacology, Cetuximab pharmacology, Chemotherapy, Adjuvant methods, Erlotinib Hydrochloride pharmacology, Pancreatic Neoplasms drug therapy
- Abstract
Pancreatic cancer continues to be the fourth leading cause of death despite advancements in surgical and adjuvant therapeutic approaches. In the present review, the current cytotoxic therapeutic approaches and advanced targeted therapies are objectively discussed with consideration to the current literature.
- Published
- 2015
- Full Text
- View/download PDF
38. Response letter regarding the interpretation of gene expression data.
- Author
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Ozmen F
- Subjects
- Female, Humans, Male, Gene Expression Regulation, Neoplastic, Hyaluronan Receptors biosynthesis, Stomach Neoplasms metabolism, Vascular Endothelial Growth Factor Receptor-3 biosynthesis, Vesicular Transport Proteins biosynthesis
- Abstract
This is a response letter to Verna E's comments regarding our previous manuscript published last year in the World Journal of Gastroenterology entitled "Relationship between LYVE-1, VEGFR-3 and CD44 gene expressions and lymphatic metastasis in gastric cancer", which evaluated the relationship between these expression levels and clinicopathological parameters (Ozmen F et al, World J Gastroenterology 2011; 17: 3220-3228). The mean values for lymphatic vessel endothelial hyaluronan receptor-1, CD44 and vascular endothelial growth factor receptor-3 expression (represented as 2(-ΔΔCt)) were 1.13, 1.24 and 1.17, respectively, suggesting an increase in gene expression in tumor tissue compared to normal tissue. Despite the increase in gene expression in the cancer tissues (2(-ΔΔCt) > 1), only some of the results reached statistical significance, which was thoroughly discussed in our paper. In the present letter, we report that his comments are flawed and result in confusion. Therefore, we herein provide more explanation regarding gene expression in gastric cancer. We hope that this letter will address Verna E's misunderstandings.
- Published
- 2013
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39. Importance of serum SELDI-TOF-MS analysis in the diagnosis of early lung cancer.
- Author
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Simsek C, Sonmez O, Keyf AI, Yurdakul AS, Ozturk C, Gulbahar O, Ozmen F, Zengin N, Kubilay D, Karatayli SC, and Bozdayi M
- Subjects
- Case-Control Studies, Early Diagnosis, Follow-Up Studies, Humans, Lung Neoplasms blood, Lung Neoplasms etiology, Prognosis, Sensitivity and Specificity, Biomarkers, Tumor blood, Blood Proteins analysis, Lung metabolism, Lung Neoplasms diagnosis, Proteomics, Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
- Abstract
Background: Different methods of diagnosis have been found to be inefficient in terms of screening and early diagnosis of lung cancer. Cancer cells produce proteins whose serum levels may be elevated during the early stages of cancer development. Therefore, those proteins may be recognized as potential cancer markers. The aim of this study was to differentiate healthy individuals and lung cancer cases by analyzing their serum protein profiles and evaluate the efficacy of this method in the early diagnosis of lung cancer., Materials and Methods: 170 patients with lung cancer, 53 under high risk of lung cancer, and 47 healthy people were included in our study. Proteomic analysis of the samples was performed with the SELDI-TOF-MS approach., Results: The most discriminatory peak of the high risk group was 8141. When tree classification analysis was performed between lung cancer and the healthy control group, 11547 was determined as the most discriminatory peak, with a sensitivity of 85.5%, a specificity of 89.4%, a positive predictive value (PPV) of 96.7% and a negative predictive value (NPV) of 62.7%., Conclusions: We determined three different protein peaks 11480, 11547 and 11679 were only present in the lung cancer group. The 8141 peak was found in the high-risk group, but not in the lung cancer and control groups. These peaks may prove to be markers of lung cancer which suggests that they may be used in the early diagnosis of lung cancer.
- Published
- 2013
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- View/download PDF
40. Impact of lymphatic vessel invasion on survival in gastric cancer.
- Author
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Ozmen F, Ozmen MM, and Kansu E
- Subjects
- Female, Humans, Male, Adenocarcinoma mortality, Adenocarcinoma pathology, Lymphatic Vessels pathology, Stomach Neoplasms mortality, Stomach Neoplasms pathology
- Published
- 2012
- Full Text
- View/download PDF
41. Relationship between LYVE-1, VEGFR-3 and CD44 gene expressions and lymphatic metastasis in gastric cancer.
- Author
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Ozmen F, Ozmen MM, Ozdemir E, Moran M, Seçkin S, Guc D, Karaagaoglu E, and Kansu E
- Subjects
- Adult, Aged, Female, Humans, Immunohistochemistry methods, Lymphatic Metastasis, Male, Middle Aged, Prognosis, RNA, Messenger metabolism, Gene Expression Regulation, Neoplastic, Hyaluronan Receptors biosynthesis, Stomach Neoplasms metabolism, Vascular Endothelial Growth Factor Receptor-3 biosynthesis, Vesicular Transport Proteins biosynthesis
- Abstract
Aim: To investigate the expression levels of lymphatic vessel endothelial hyaluronan receptor-1 (LYVE-1), vascular endothelial growth factor receptor-3 (VEGFR-3) and CD44 genes and the relationship between their levels and clinicopathological parameters in gastric cancer., Methods: Tissue samples were obtained from 33 patients (8 females) with gastric cancer. mRNA levels of LYVE-1, VEGFR-3 and CD44 in normal and tumor tissues were quantitatively measured using real time polymerase chain reaction. The results were correlated with lymph node metastasis, histological type and differentiation of the tumor, T-stage, and presence of vascular, perineural and lymphatic invasions. The distribution of molecules in the tissue was evaluated using immunohistochemistry., Results: LYVE-1, CD44 and VEGFR-3 gene expression levels were significantly higher in gastric cancer than in normal tissue. While there was no correlation between gene expressions and clinicopathologic features such as histologic type, differentiation and stage, gene expression levels were found to be increased in conjunction with positive lymph node/total lymph node ratio and the presence of perineural invasion. A significant correlation was also found between LYVE-1 and CD44 over-expressions and perineural invasion and lymph node positivity in gastric cancers. When the distribution of LYVE-1 antibody-stained lymphatic vessels in tissue was evaluated, lymphatic vessels were located intra-tumorally in 13% and peri-tumorally in 27% of the patients. Moreover, lymph node metastases were also positive in all patients with LYVE-1-staining., Conclusion: LYVE-1, VEGFR-3 and CD44 all play an important role in lymphangiogenesis, invasion and metastasis. LYVE-1 is a perfectly reliable lymphatic vessel marker and useful for immunohistochemistry.
- Published
- 2011
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42. An unusual case of a giant pseudoaneurysm formation after myocardial infarction.
- Author
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Ozer N, Aksoy H, Hazırolan T, Tulumen E, Deveci OS, Okutucu S, Abacı A, Ozdoğan ME, and Ozmen F
- Subjects
- Aged, Humans, Male, Ultrasonography, Aneurysm, False diagnostic imaging, Aneurysm, False etiology, Heart Rupture, Post-Infarction diagnostic imaging, Heart Rupture, Post-Infarction etiology, Myocardial Infarction complications, Myocardial Infarction diagnostic imaging
- Abstract
In the era of early and invasive therapeutic approaches, myocardial rupture has become an uncommon complication of myocardial infarction. We report an uncommon complication following inferior myocardial infarction with both left ventricular and right ventricular rupture and subsequent communication via a shared pseudoaneurysm., (© 2010, Wiley Periodicals, Inc.)
- Published
- 2010
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43. Intron 4 VNTR polymorphism of eNOS gene is protective for cardiac syndrome X.
- Author
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Sinici I, Atalar E, Kepez A, Hayran M, Aksoyek S, Tokgozoglu L, and Ozmen F
- Subjects
- Adult, Aged, Female, Humans, Male, Microvascular Angina prevention & control, Middle Aged, Introns, Microvascular Angina genetics, Minisatellite Repeats, Nitric Oxide Synthase Type III genetics
- Abstract
Microvascular abnormalities caused by endothelial dysfunction seem to be responsible for the myocardial ischemia in patients with cardiac syndrome X (CSX). Nitric oxide is a key mediator of endothelial function and is synthesized by endothelial nitric oxide synthase (eNOS). We investigated if the 3 potential polymorphisms of the eNOS gene (VNTR in intron 4, T786C polymorphism in the promoter region, and G894T polymorphism in exon 7) are independent risk factors for CSX. Sixty-nine patients with CSX and 73 healthy controls were studied. Genotypes were determined through polymerase chain reaction with or without restriction endonuclease digestions. Genotype distribution was significantly different between patients with CSX and controls for intron 4aa (allele for 4 repeats of 27 bp), intron 4aa genotype frequency being 3.2% and 6.8%, respectively. The presence of intron 4a is 3.2 (odds ratio) times protective (95% confidence interval, 1.5-6.8) for the risk of CSX disease. The protective effect of intron 4a polymorphism also holds after adjustment for age and sex and when the study group is limited to those without hypertension and hyperlipidemia. No significant difference was observed in genotype distribution of G894T and T786C polymorphism between patients with CSX and controls. In conclusion, intron 4aa genotype of eNOS gene is protective for CSX. No association was found between promoter and exon 7 polymorphisms of eNOS gene and CSX.
- Published
- 2010
- Full Text
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44. [The early predictors of ventricular remodeling after myocardial infarction: the role of tumor necrosis factor-alpha].
- Author
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Kaya EB, Ozer N, Deveci OS, Kepez A, Tülümen E, Aksöyek S, Atalar E, Ovünç K, Ozmen F, and Ozkutlu H
- Subjects
- Adult, Aged, Aged, 80 and over, Analysis of Variance, Case-Control Studies, Cohort Studies, Coronary Angiography, Echocardiography, Female, Humans, Logistic Models, Male, Middle Aged, Predictive Value of Tests, Prospective Studies, ROC Curve, Statistics, Nonparametric, Myocardial Infarction pathology, Tumor Necrosis Factor-alpha blood, Ventricular Remodeling
- Abstract
Objective: Ventricular remodeling (VR) is a pathologic process characterized by progressive ventricular dilatation occurring after acute myocardial infarction (MI) leading to left ventricular systolic dysfunction. The purpose of the study was to evaluate the efficacy of plasma tumor necrosis factor alpha (TNF-alpha) levels to predict the left VR., Methods: This prospective observational cohort study included 72 consecutive patients with newly diagnosed MI with age ranging between 38-87 years (mean 59 +/- 12 years). Control group was consisted of 30 patients with no additional systemic disease and normal coronary arteriograms. Transthoracic echocardiography was performed to all patients and controls both in the beginning of the study and in the 6th follow-up. A coronary arteriography was also performed to all patients. Patients with an increment in the diastolic volume index more than 20% in the follow-up compared with basal values included in the VR subgroup. The patient subgroup with VR consisted of 19 patients. Statistical analyses were performed using ANOVA and Kruskal Wallis tests for comparison of variables between groups. Logistic regression and ROC analyses were used for evaluation of accuracy of TNF-alpha in prediction of VR., Results: There were no significant differences between groups according to demographic characters. The basal plasma levels of TNF-alpha were higher in the patient subgroup with VR as compared with patients without VR and controls (14.59 +/- 4.28 pg/ml vs 7.30 +/- 4.48 pg/ml, and 1.64 +/- 1.49 pg/ml, p< 0.001). In logistic regression analysis only TNF-alpha predicted the VR (OR-1.356, 95% CI 1.117-1.647). Plasma TNF-alpha levels with a cut-off > or = 10.33 pg/ml were found to have 89.5% sensitivity and 79.3% specificity to predict the development of VR., Conclusion: These results demonstrate the increment of plasma TNF-alpha levels in the acute phase of MI and the close relationship between the TNF-alpha levels and VR in the patients with first MI.
- Published
- 2009
45. The prevalence of factor V (G1691A), MTHFR (C677T) and PT (G20210A) gene mutations in arterial thrombosis.
- Author
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Ozmen F, Ozmen MM, Ozalp N, and Akar N
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Case-Control Studies, Female, Genetic Predisposition to Disease, Humans, Male, Middle Aged, Molecular Epidemiology, Mutation, Prevalence, Risk Assessment, Thrombosis epidemiology, Thrombosis etiology, Young Adult, Factor V genetics, Methylenetetrahydrofolate Reductase (NADPH2) genetics, Prothrombin genetics, Thrombosis genetics
- Abstract
Background: Factor V (FV) [G1691A], methylenetetrahydrofolate reductase (MTHFR) [C677T] and prothrombin (PT) [G20210A] mutations are all well-recognized genetic risk factors for venous thrombosis. Although their prevalence in coronary artery disease has been established through debate, their role in patients with arterial thrombosis remains to be clarified. We investigated the prevalence rates of FV, MTHFR and PT gene mutations in patients with arterial thrombosis and in healthy controls., Methods: All subjects and controls were from Central Anatolia. Thirty (8F) patients with median (range) age of 63 (16-88) years and 90 (52F) healthy controls with median (range) age of 31 (20-73) years were studied. DNA was extracted using conventional methods (proteinase K/phenol-chloroform) followed by PCR amplification and restriction endonuclease digestion (using Hinf I and Hind III). Digested PCR products were identified using agarose gel electrophoresis and stained with ethidium bromide., Results: The prevalence rates of MTHFR and PT gene mutations were not significantly different between the groups. The prevalence rate of FV mutation was significantly higher in patients with arterial thrombosis. Coinheritance of FV and MTHFR was found in 67% of patients, which was significantly higher in arterial thrombosis, suggesting the MTHFR mutation as a synergistic risk factor for thrombosis in patients with FV mutation. PT gene mutation has no effect on arterial thrombosis., Conclusion: The increased prevalence rate and coexistence of both FV and MTHFR found in this group of patients suggest that these mutations might increase the risk of arterial thrombosis.
- Published
- 2009
46. Association of plasma osteopontin levels with coronary calcification evaluated by tomographic coronary calcium scoring.
- Author
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Aryan M, Kepez A, Atalar E, Hazirolan T, Haznedaroglu I, Akata D, Ozer N, Aksoyek S, Ovunc K, and Ozmen F
- Subjects
- Anticholesteremic Agents pharmacology, Female, Humans, Male, Middle Aged, Renin-Angiotensin System drug effects, Calcinosis blood, Calcinosis diagnostic imaging, Calcium metabolism, Cardiomyopathies blood, Cardiomyopathies diagnostic imaging, Osteopontin blood, Tomography, X-Ray Computed
- Abstract
Evidence indicates that proteins controlling bone mineralization are also involved in the regulation of coronary calcification. The aim of the present study is to evaluate the association between plasma osteopontin (OPN) levels and coronary calcification quantified by using tomographic coronary calcium scoring. Plasma OPN levels were measured from samples of 80 intermediate-risk asymptomatic patients (56 +/- 10 years) who underwent tomographic coronary calcium scoring via multislice computed tomography for incremental risk stratification. There was no significant difference regarding OPN levels between patients with and without coronary calcification in the whole study population. Of 49 patients not receiving renin-angiotensin system inhibitors and/or statins, plasma OPN levels of patients with coronary calcification (38.7%) were significantly higher than those without coronary calcification (61.3%) (8.88 +/- 2.85 vs. 6.79 +/- 2.41, P = 0.008, respectively). On a binary logistic regression model, only age and plasma OPN level were found to be significant independent associated variables for the presence of coronary calcification in patients not receiving these medications (odds ratio for age, 1.15, P = 0.017; for plasma OPN levels, 1.63, P = 0.014). Our results indicate that plasma OPN levels may be predictive of coronary calcification, suggesting an important role of OPN in the atherosclerotic calcification pathogenesis.
- Published
- 2009
- Full Text
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47. Lymph nodes in gastric cancer.
- Author
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Ozmen MM, Ozmen F, and Zulfikaroglu B
- Subjects
- Angiogenesis Inhibitors therapeutic use, Humans, Lymph Node Excision, Lymphatic Metastasis, Lymphography, Preoperative Care, Radiopharmaceuticals, Technetium Compounds, Tin Fluorides, Lymph Nodes pathology, Stomach Neoplasms pathology
- Abstract
Surgery is the only curative therapy for gastric cancer and controversy still exist on the extend of surgery. As the lymphatic distribution of stomach is very complex, the determination of the actual lymph node involvement is important for making the decision in order to avoid complications. Sentinel node navigation surgery has recently been introduced in gastrointestinal tract cancer. Present article reviews the detection techniques of lymph nodes and significance of lymphadenectomies in gastric cancer., ((c) 2008 Wiley-Liss, Inc.)
- Published
- 2008
- Full Text
- View/download PDF
48. Early electrocardiographic diagnosis of acute coronary ischemia on the paced electrocardiogram.
- Author
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Kilic H, Atalar E, Ozer N, Ovunc K, Aksoyek S, Ozmen F, and Akdemir R
- Subjects
- Humans, Electrocardiography, Myocardial Ischemia diagnosis
- Abstract
Background: Twelve-lead electrocardiography (ECG) is the most important source for the early diagnosis of an acute myocardial ischemia. However, its diagnostic value when the sequence of ventricular activation is altered by ventricular pacing is unknown. The aim of the study was to evaluate the ECG changes on the paced ECG during percutaneous coronary intervention (PCI) by doing temporary pacing., Methods and Results: Standard 12 lead baseline and temporary pacing ECG records were taken before the intervention in elective PCI patients. Standard 12 lead and temporary pacing ECG records were repeated during the balloon inflation. Fifteen (12 men and 3 women; age 57.2+/-9.7 years) subjects who were undergoing routine PCI were studied. Mean Delta ST deviation on the normal conduction ECG during inflation was 1.03+/-1.02 mV and mean Delta ST deviation on the paced ECG during inflation was 1.7+/-1.6 mV. The pre-inflation mean QRS duration on the paced ECG was 143.2+/-2.8 ms and during inflation mean QRS duration was 157.8+/-12.5 ms. The mean QRS prolongation was 14.6+/-13.6 ms on the paced ECG. Despite the presence of paced ECG abnormalities, significant ischemic ST segment deviations were seen after referencing the ST segment deviations to the pre-PCI. Also, there is significant QRS prolongation on the paced ECG during ischemia., Conclusions: The present study extends the correlation between normal and paced ECG during ischemia and the QRS prolongation could be a marker of myocardial ischemia on the paced electrocardiogram.
- Published
- 2008
- Full Text
- View/download PDF
49. Comparison of strain doppler echocardiography and radiologic left ventriculography for quantitative assessment of regional myocardial function.
- Author
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Ozer N, Kiliç H, Kepez A, Kaya EB, Deniz A, Atalar E, Aksöyek S, Ovünç K, Ozmen F, and Kes S
- Subjects
- Coronary Disease physiopathology, Female, Humans, Male, Middle Aged, ROC Curve, Ventricular Dysfunction, Left physiopathology, Coronary Angiography methods, Coronary Disease diagnostic imaging, Echocardiography, Doppler methods, Myocardial Contraction physiology, Ventricular Dysfunction, Left diagnostic imaging
- Abstract
Objective: We aimed to study the comparison of strain and strain rate parameters with conventional left ventriculography derived regional function., Method: Forty patients were included in the study. The study group was selected from patients who had undergone left ventriculography and coronary angiography for clinical indications. Regional myocardial function was assessed using the centerline method via ACOM PC Quantcor LVA measurement system. Patients were also evaluated with echocardiography. Strain and strain rate Doppler echocardiographic measurements were compared with conventional left ventriculography at anterobasal, anterolateral, inferior and posterobasal segments., Results: Radiological left ventricular radial shortening was found to correlate with longitudinal strain shortening in all ventriculographic segments examined (anterobasal, r = 0.771, P < 0.0001; anterolateral, r = 0.790, P < 0.0001; posterobasal, r = 0.861, P < 0.0001; inferior, r = 0.815, P < 0.0001). Correlation was persistent both in patients with or without coronary artery disease. The sensitivity of a peak systolic longitudinal strain >12.5% for prediction of patients with radial shortening >or=20% was 75%, with a specificity of 100%. However, no relationship could be demonstrated between radiological left ventricular radial shortening and strain rate measurements., Conclusions: In our study it was shown that regional wall motion can be measured quantitatively via strain Doppler echocardiography with the left ventriculography as reference.
- Published
- 2008
- Full Text
- View/download PDF
50. B-type natriuretic peptide (BNP) levels in female systemic lupus erythematosus patients: what is the clinical significance?
- Author
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Karadag O, Calguneri M, Yavuz B, Atalar E, Akdogan A, Kalyoncu U, Kiraz S, Aksoyek S, Ozmen F, and Ertenli AI
- Subjects
- Adult, Age Factors, Blood Pressure, Cardiovascular Diseases diagnosis, Echocardiography methods, Female, Humans, Inflammation, Lupus Erythematosus, Systemic diagnosis, Middle Aged, Models, Statistical, Prognosis, Prospective Studies, Risk Factors, Lupus Erythematosus, Systemic blood, Natriuretic Peptide, Brain blood
- Abstract
Cardiovascular disease is a major cause of death in patients with systemic lupus erythematosus (SLE) especially during the late phase of the disease. This study was conducted to evaluate B-type natriuretic peptide (BNP) levels in female SLE patients without cardiac symptoms and to investigate whether BNP levels correlated with echocardiographic findings. We studied 59 women with SLE and 33 healthy women. SLE patients with history of cardiac disease, diabetes mellitus, hypertension, and other inflammatory diseases were excluded from the study. All subjects had a complete history and physical examination. Overall disease activity assessment in SLE patients at the time of the study were derived by calculation of SLE disease activity index (SLEDAI). BNP levels were determined, and transthoracic echocardiography were performed in all subjects. There was no difference between SLE patients and controls in terms of age, blood pressure, smoking status, plasma glucose, creatinine levels, and lipid profiles. Nine patients had SLEDAI score greater than 5. All subjects had an EF greater than 55%. Diastolic dysfunction was more frequent in lupus patients than in controls (15 [25.4%] vs. 2 [6%]; p = 0.022). BNP levels of SLE patients were significantly higher than controls (median 17.9 range [5-211] pg/ml vs. median 14.7 range [5-39.7] pg/ml; p = 0.033). Twenty-seven of the SLE patients (46%) and seven of the controls (21%) had BNP levels greater than or equal to 20 pg/ml (p = 0.019). There were no differences in BNP levels of SLE patients with and without diastolic dysfunction (median 17.8 range [5-117] pg/ml vs. median 18.5 range [5-211] pg/mL; p = NS). BNP levels were positively correlated with left atrium diameter (r (2) = 0.39, p = 0.001). BNP levels did not correlate with erythrocyte sedimentation rate/C-reactive protein levels, SLEDAI scores, total steroid dosage used, or other echocardigraphic parameters. BNP levels were increased in female SLE patients without cardiac symptoms as compared to healthy controls. Although none of the SLE patients in our study had clinical signs of ischemic heart disease, increased levels of BNP in SLE patients might be a reflection of a ischemic myocardial tissue.
- Published
- 2007
- Full Text
- View/download PDF
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