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Kurt M, Ercan S, Pirinccioglu N. Designing new drug candidates as inhibitors against wild and mutant type neuraminidases: molecular docking, molecular dynamics and binding free energy calculations. J Biomol Struct Dyn 2023; 41:7847-7861. [PMID: 36152997 DOI: 10.1080/07391102.2022.2125440] [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: 04/11/2022] [Accepted: 09/12/2022] [Indexed: 10/14/2022]
Abstract
Influenza virus is the cause of the death of millions of people with about 3-4 pandemics every hundred years in history. It also turns into a seasonal disease, bringing about approximately 5-15% of the population to be infected and 290,000-650,000 people to die every year. These numbers reveal that it is necessary to be on the alert to work towards influenza in order to protect public health. There are FDA-approved antiviral drugs such as oseltamivir and zanamivir recommended by the World Center for Disease Prevention. However, after the recent outbreaks such as bird flu and swine flu, increasing studies have shown that the flu virus has gained resistance to these drugs. So, there is an urgent need to find new drugs effective against this virus. This study aims to investigate new drug candidates targeting neuraminidase (NA) for the treatment of influenza by using computer aided drug design approaches. They involve virtual scanning, de novo design, rational design, docking, MD, MMGB/PBSA. The investigation includes H1N1, H5N1, H2N2 and H3N2 neuraminidase proteins and their mutant variants possessing resistance to FDA-approved drugs. Virtual screening consists of approximately 30 thousand molecules while de novo and rational designs produced over a hundred molecules. These approaches produced three lead molecules with binding energies for both non-mutant (-34.84, -59.99 and -60.66 kcal/mol) and mutant (-40.40, -58.93, -76.19 kcal/mol) H2N2 NA calculated by MM-PBSA compared with those of oseltamivir -25.64 and -18.40 respectively. The results offer new drug candidates against influenza infection.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Murat Kurt
- Institute of Science, Dicle University, Diyarbakır, Turkey
| | - Selami Ercan
- Department of Chemistry, Batman University, Batman, Turkey
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Ersoy E, Süvari G, Ercan S, Eroğlu Özkan E, Karahan S, Aygün Tuncay E, Yeşil Cantürk Y, Mataracı Kara E, Zengin G, Boğa M. Towards a better understanding of commonly used medicinal plants from Turkiye: Detailed phytochemical screening and biological activity studies of two Teucrium L. species with in vitro and in silico approach. J Ethnopharmacol 2023; 312:116482. [PMID: 37059244 DOI: 10.1016/j.jep.2023.116482] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/31/2023] [Accepted: 04/08/2023] [Indexed: 05/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Since ancient times, Teucrium L. species have been among the most commonly used traditional medicinal plants mainly in the Mediterranean region. From tackling gastrointestinal problems to maintaining the healthy functioning of endocrine glands, and from treating malaria to severe dermatological disorders, Teucrium species are known to have extensive therapeutic applications. Teucrium polium L. and Teucrium parviflorum Schreb. are the two members of the genus that have been used in Turkish folk medicine for various medicinal purposes. AIM OF THE STUDY To determine the phytochemical compositions of the essential oils and ethanol extracts of Teucrium polium and Teucrium parviflorum collected from different locations in Turkiye along with the investigation of in vitro antioxidant, anticancer, antimicrobial activities, and both in vitro and in silico enzyme inhibitory activities of the extracts. MATERIALS AND METHODS Ethanol extracts of Teucrium polium aerial parts and roots, and aerial parts of Teucrium parviflorum were prepared. Volatile profiling of the essential oils by GC-MS, phytochemical profiling of the ethanol extracts by LC-HRMS, antioxidant activity by DPPH radical scavenging, ABTS cation radical scavenging, CUPRAC, and metal chelating activity assays, anticholinesterase, antityrosinase, antiurease, activities by different enzyme inhibitory activity assays, anticancer activity by SRB cell viability assay, and antimicrobial activity against a standard panel of bacteria and fungi by the microbroth dilution technique. Molecular docking studies were performed by Autodock Vina (Ver. 1.1.2). RESULTS The studied extracts were found to be quite rich in various biologically important volatile and phenolic compounds. (-)-Epigallocatechin gallate, which is a molecule renowned for having great therapeutic potential, was the major compound of all extracts. Teucrium polium aerial parts extract was revealed as a great source for naringenin with 16327 ± 685.23 μg/g extract. All extracts exerted significant antioxidant activity by different methods. All extracts demonstrated antibutrylcholinesterase, antityrosinase, and antiurease activities by in vitro and in silico assays. Teucrium polium roots extract stood out with remarkable tyrosinase and urease inhibitory and cytotoxic activities. CONCLUSION The obtained results from this multi-disciplinary study proves that the traditional use of these two Teucrium species is justified, and the mechanisms behind are enlightened.
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Affiliation(s)
- Ezgi Ersoy
- Department of Pharmacognosy, Faculty of Pharmacy, Biruni University, 34010, Topkapı, Istanbul, Turkiye.
| | - Goncagül Süvari
- Department of Analytical Chemistry, Faculty of Pharmacy, Dicle University, 21280, Sur, Diyarbakır, Turkiye
| | - Selami Ercan
- Department of Chemistry, Faculty of Sciences, Batman University, 72060, Batman, Turkiye
| | - Esra Eroğlu Özkan
- Department of Pharmacognosy, Faculty of Pharmacy, Istanbul University, 34116, Beyazit, Istanbul, Turkiye
| | - Selim Karahan
- Department of Medical Pharmacology, Faculty of Medicine, Mardin Artuklu University, 47100, Mardin, Turkiye; Dicle University Health Sciences Application and Research Center (DÜSAM), 21280, Sur, Diyarbakır, Turkiye
| | - Evin Aygün Tuncay
- Department of Analytical Chemistry, Faculty of Pharmacy, Dicle University, 21280, Sur, Diyarbakır, Turkiye
| | - Yeter Yeşil Cantürk
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Istanbul University, 34116, Beyazıt, Istanbul, Turkiye
| | - Emel Mataracı Kara
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Istanbul University, 34116, Beyazıt, Istanbul, Turkiye
| | - Gökhan Zengin
- Department of Biology, Faculty of Science, Selçuk University, 42250, Konya, Turkiye
| | - Mehmet Boğa
- Department of Analytical Chemistry, Faculty of Pharmacy, Dicle University, 21280, Sur, Diyarbakır, Turkiye; Dicle University Health Sciences Application and Research Center (DÜSAM), 21280, Sur, Diyarbakır, Turkiye.
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Bingul M, Ercan S, Boga M, Bingul AA. Antioxidant and Anticholinesterase Potentials of Novel 4,6-Dimethoxyindole based Unsymmetrical Azines: Synthesis, Molecular Modeling, In Silico ADME Prediction and Biological Evaluations. Polycycl Aromat Compd 2023. [DOI: 10.1080/10406638.2023.2193417] [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] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
- Murat Bingul
- Department of Basic Pharmaceutical Sciences, Faculty of Pharmacy, Dicle University, Diyarbakır, Turkey
| | - Selami Ercan
- Deparment of Chemistry, Faculty of Science and Art, Batman University, Batman, Turkey
| | - Mehmet Boga
- Department of Analytical Chemistry, Faculty of Pharmacy, Dicle University, Diyarbakır, Turkey
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Ucan ES, Ozgen Alpaydin A, Ozuygur SS, Ercan S, Unal B, Sayiner AA, Ergan B, Gokmen N, Savran Y, Kilinc O, Avkan Oguz V. Pneumonia severity indices predict prognosis in coronavirus disease-2019. Respir Med Res 2021; 79:100826. [PMID: 33971434 PMCID: PMC8078040 DOI: 10.1016/j.resmer.2021.100826] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 03/23/2021] [Accepted: 04/20/2021] [Indexed: 01/10/2023]
Abstract
Background Early recognition of the severe illness is critical in coronavirus disease-19 (COVID-19) to provide best care and optimize the use of limited resources. Objectives We aimed to determine the predictive properties of common community-acquired pneumonia (CAP) severity scores and COVID-19 specific indices. Methods In this retrospective cohort, COVID-19 patients hospitalized in a teaching hospital between 18 March-20 May 2020 were included. Demographic, clinical, and laboratory characteristics related to severity and mortality were measured and CURB-65, PSI, A-DROP, CALL, and COVID-GRAM scores were calculated as defined previously in the literature. Progression to severe disease and in-hospital/overall mortality during the follow-up of the patients were determined from electronic records. Kaplan-Meier, log-rank test, and Cox proportional hazard regression model was used. The discrimination capability of pneumonia severity indices was evaluated by receiver-operating-characteristic (ROC) analysis. Results Two hundred ninety-eight patients were included in the study. Sixty-two patients (20.8%) presented with severe COVID-19 while thirty-one (10.4%) developed severe COVID-19 at any time from the admission. In-hospital mortality was 39 (13.1%) while the overall mortality was 44 (14.8%). The mortality in low-risk groups that were identified to manage outside the hospital was 0 in CALL Class A, 1.67% in PSI low risk, and 2.68% in CURB-65 low-risk. However, the AUCs for the mortality prediction in COVID-19 were 0.875, 0.873, 0.859, 0.855, and 0.828 for A-DROP, PSI, CURB-65, COVID-GRAM, and CALL scores respectively. The AUCs for the prediction of progression to severe disease was 0.739, 0.711, 0,697, 0.673, and 0.668 for CURB-65, CALL, PSI, COVID-GRAM, A-DROP respectively. The hazard ratios (HR) for the tested pneumonia severity indices demonstrated that A-DROP and CURB-65 scores had the strongest association with mortality, and PSI, and COVID-GRAM scores predicted mortality independent from age and comorbidity. Conclusion Community-acquired pneumonia (CAP) scores can predict in COVID-19. The indices proposed specifically to COVID-19 work less than nonspecific scoring systems surprisingly. The CALL score may be used to decide outpatient management in COVID-19.
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Affiliation(s)
- E S Ucan
- Department of Pulmonary Diseases, Dokuz Eylul University Faculty of Medicine, Izmir, Turkey
| | - A Ozgen Alpaydin
- Department of Pulmonary Diseases, Dokuz Eylul University Faculty of Medicine, Izmir, Turkey.
| | - S S Ozuygur
- Department of Pulmonary Diseases, Dokuz Eylul University Faculty of Medicine, Izmir, Turkey
| | - S Ercan
- Department of Pulmonary Diseases, Dokuz Eylul University Faculty of Medicine, Izmir, Turkey
| | - B Unal
- Department of Public Health, Dokuz Eylul University Faculty of Medicine, Izmir, Turkey
| | - A A Sayiner
- Department of Medical Microbiology, Dokuz Eylul University Faculty of Medicine, Izmir, Turkey
| | - B Ergan
- Department of Pulmonary Diseases, Dokuz Eylul University Faculty of Medicine, Izmir, Turkey
| | - N Gokmen
- Department of Anesthesiology and Reanimation, Dokuz Eylul University Faculty of Medicine, Izmir, Turkey
| | - Y Savran
- Department of Internal Medicine, Medicana International Izmir Hospital, Izmir, Turkey
| | - O Kilinc
- Department of Pulmonary Diseases, Dokuz Eylul University Faculty of Medicine, Izmir, Turkey
| | - V Avkan Oguz
- Department of Infectious Diseases and Clinical Microbiology, Dokuz Eylul University Faculty of Medicine, Izmir, Turkey
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Al-Bustany HA, Ercan S, Ince E, Pirinccioglu N. Investigation of angucycline compounds as potential drug candidates against SARS Cov-2 main protease using docking and molecular dynamic approaches. Mol Divers 2021; 26:293-308. [PMID: 33837893 PMCID: PMC8035615 DOI: 10.1007/s11030-021-10219-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 03/25/2021] [Indexed: 11/04/2022]
Abstract
Abstract The emerged Coronavirus disease (COVID-19) causes severe or even fatal respiratory tract infection, and to date there is no FDA-approved therapeutics or effective treatment available to effectively combat this viral infection. This urgent situation is an attractive research area in the field of drug design and development. One of the most important targets of SARS-coronavirus-2 (SARS Cov-2) is the main protease (3CLpro). Actinomycetes are important resources for drug discovery. The angucylines that are mainly produced by Streptomyces genus of actinomycetes exhibit a broad range of biological activities such as anticancer, antibacterial and antiviral. This study aims to investigate the binding affinity and molecular interactions of 157 available angucycline compounds with 3CLpro using docking and molecular dynamics simulations. MM-PBSA calculations showed that moromycin A has a better binding energy (− 30.42 kcal mol−1) compared with other ligands (in a range of − 18.66 to − 22.89 kcal mol−1) including saquayamycin K4 (− 21.27 kcal mol−1) except the co-crystallized ligand N3. However, in vitro and in vivo studies are essential to assess the effectiveness of angucycline compounds against coronavirus. Graphic abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1007/s11030-021-10219-1.
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Affiliation(s)
- Hazem Abbas Al-Bustany
- Department of Basic Science, College of Medicine, Hawler Medical University, Erbil, Iraq
| | - Selami Ercan
- Department of Nursing, School of Health, Batman University, Batman, Turkey
| | - Ebru Ince
- Department of Biology, Dicle University, 21280, Diyarbakir, Turkey
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Ekinci S, İlter Z, Ercan S, Çınar E, Çakmak R. Magnetite nanoparticles grafted with murexide-terminated polyamidoamine dendrimers for removal of lead (II) from aqueous solution: synthesis, characterization, adsorption and antimicrobial activity studies. Heliyon 2021; 7:e06600. [PMID: 33869845 PMCID: PMC8035525 DOI: 10.1016/j.heliyon.2021.e06600] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/18/2020] [Accepted: 03/23/2021] [Indexed: 01/05/2023] Open
Abstract
In this study, new, efficient, eco-friendly and magnetically separable nanoadsorbents, MNPs-G1-Mu and MNPs-G2-Mu, were successfully prepared by covalently grafting murexide-terminated polyamidoamine dendrimers on 3-aminopropyl functionalized silica-coated magnetite nanoparticles, and used for rapid removal of lead (II) from aqueous medium. After each adsorption process, the supernatant was successfully acquired from reaction mixture by the magnetic separation, and then analyzed by employing ICP-OES. Chemical and physical characterizations of new nanomaterials were confirmed by XRD, FT-IR, SEM, TEM, and VSM. Maximum adsorption capacities (qm) of both prepared new nanostructured adsorbents were compared with each other and also with some other adsorbents. The kinetic data were appraised by using pseudo-first-order and pseudo-second-order kinetic models. Adsorption isotherms were found to be suitable with both Langmuir and Freundlich isotherm linear equations. The maximum adsorption capacities for MNPs-G1-Mu and MNPs-G2-Mu were calculated as 208.33 mg g-1 and 232.56 mg g-1, respectively. Antimicrobial activities of nanoparticles were also examined against various microorganisms by using microdilution method. It was determined that MNPs-G1-Mu, MNPs-G2-Mu and lead (II) adsorbed MNPs-G2-Mu showed good antimicrobial activity against S. aureus ATTC 29213 and C. Parapsilosis ATTC 22019. MNPs-G1-Mu also showed antimicrobial activity against C. albicans ATTC 10231.
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Affiliation(s)
- Selma Ekinci
- Department of Chemistry, Faculty of Science and Art, Batman University, Batman, 72100, Turkey
| | - Zülfiye İlter
- Department of Chemistry, Faculty of Science, Fırat University, Elazığ, 23000, Turkey
| | - Selami Ercan
- Department of Nursing, School of Health Sciences, Batman University, Batman, 72060, Turkey
| | - Ercan Çınar
- Department of Nursing, School of Health Sciences, Batman University, Batman, 72060, Turkey
| | - Reşit Çakmak
- Medical Laboratory Techniques Program, Vocational School of Health Services, Batman University, Batman, 72060, Turkey
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Bingul M, Ercan S, Boga M. The design of novel 4,6-dimethoxyindole based hydrazide-hydrazones: Molecular modeling, synthesis and anticholinesterase activity. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128202] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Karapinar M, Baskurt Z, Baskurt F, Unal M, Ercan S, Cetİn C. THU0621-HPR SARC-F SCALE ON SCREENING SARCOPENIA AND PHYSICAL FUNCTION IN PATIENTS WITH KNEE OSTEOARTRITIS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.5732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Sarcopenia has been defined as a loss of muscle mass and consequently of muscle function. In patients affected by osteoarthritis (OA) a more likely and accelerated development of sarcopenia has been reported. The SARC-F is a simple sarcopenia screening tool includes five assessment items: strength, assistance walking, rising from a chair, climbing stairs, and falls. SARC-F ≥ 4 is defined as sarcopenia.Objectives:The present study aimed to examine the utility of SARC-F in the patients with knee osteoarthritis.Methods:Patients with radiographic and clinic evidence of tibiofemoral OA (Kellgren-Lawrence score ≥2) were included. Sarcopenia were identified using the SARC-F scale. Patients with a total score 4 and higher than 4 were classified as having sarcopenia. Patients were assessed by The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), four-meter walking test, hand grip test, shortened version of the falls efficacy scale-international (the short FES-I) and EuroQol- 5 Dimension (EQ-5D). A multiple linear regression model was used to identify independent predictors of SARC-F.Results:A total 76 patients with median age 61 ranged 55 to 78 years old (72.4% female) were screened in this study (Table 1). Of the sample, 38.1% of patients were sarcopenic as a SARC-F (Figure 1). Through multiple regression analyses, SARC-F scores was significantly associated with four-meter walking test, hand grip, WOMAC-Function, EQ-5D and short FES-I describing between 57% and 63% of the variance (adjusted R2) (Table 2). Also, poor physical performance and grip strength were associated with SARC-F ≥ 4 independently (P<0.005).Table 1.Summary Table of Characteristics of sarcopenic vs non-sarcopenic patients with knee OAMeasuresSarcopenic patients with knee OA (n:47)Sarc-F≥4Non-Sarcopenic patients with knee OA (n:29)Sarc-F<4p valueφAge,mean(SD)62.7(6.9)59.3 (6.9)0.294BMI,mean(SD)27.84 (9.56)28.54 (8.38)0.327WOMAC,mean(SD)43.52 (10.83)28.06 (14.9)0.001*GRADE (K-L) med (min-max)3(2-4)2(2-4)0.008*Hand Grip,mean(SD)20 33 (4.89)28.22 (7.13)0.001*4 m Walking Test, mean(SD)11.88 (4.24)9.55 (4.30)0.001*EQ-5D,mean(SD)9.41 (1.52)7. 13 (1.75)0.001*EQ-5D-VAS,mean(SD)44.31 (14.12)66.90 (16.25)0.001*Short FES-I,mean(SD)18. 06 (9.45)9.04 (5.32)0.001*Number of falls the past year,mean(SD)4.01 (1.24)3.14 (2.74)0.674φMann Whitney U test; *p< 0.05; BMI, Body mass index; WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index EQ-5D, EuroQol-5 Dimension; FES-I, Falls Efficacy Scale-InternationalTable 2.Multiple linear regression analysis for SARC-FβtP value95% Confidence Interval(lower-upper bound)Walking Speed0.111.200.23-0.31/ 0.12Hand Grip-0.35-1.730.04-0.20 / 0.01WOMAC-Function0.262.310.010.00 / 0.05Short FES-I0.181.960.010.04 / 0.01EQ-5D0.222.290.020.02 / 0.39EQ-5D VASR2= 0.61-0.24-2.730.001-0.04 / -0.00WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index, EQ-5D, EuroQol-5 Dimension; FES-I, Falls Efficacy Scale-InternationalFigure 1.Sarcopenic vs non-sarcopenic patients according to sexConclusion:In this study, sarcopenia defined by the SARC-F questionnaire has a predictive value of clinical characteristics of patients to predict sarcopenia parameters and poor physical performance in patients with knee OA.References:[1]Papalia, R., Zampogna, B., Torre, G., Lanotte, A., Vasta, S., Albo, E., ... & Denaro, V. (2014). Sarcopenia and its relationship with osteoarthritis: risk factor or direct consequence?.Musculoskeletal surgery,98(1), 9-14.Disclosure of Interests:None declared
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Ercan S, Çınar E, Özaydın C, Efe Ertürk N, Çakmak R. Inhibitor design for
3‐hydroxy‐3‐methyl‐glutaryl‐CoA
reductase enzyme; molecular docking and determination of molecular and electronic properties of ligands by density functional theory method. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3996] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Selami Ercan
- Department of Nursing, School of Health SciencesBatman University Batman Turkey
| | - Ercan Çınar
- Department of Nursing, School of Health SciencesBatman University Batman Turkey
| | - Cihat Özaydın
- Faculty of Engineering and Architecture, Computer Engineering DepartmentBatman University Batman Turkey
| | - Nuriye Efe Ertürk
- Department of Nursing, School of Health SciencesBatman University Batman Turkey
| | - Reşit Çakmak
- Vocational School of Health ServicesBatman University Batman Turkey
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Ercan S, Şenses Y. Design and molecular docking studies of new inhibitor candidates for EBNA1 DNA binding site: a computational study. Molecular Simulation 2020. [DOI: 10.1080/08927022.2019.1709638] [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] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Selami Ercan
- Department of Nursing, School of Health Sciences, Batman University, Batman, Turkey
| | - Yusuf Şenses
- Institute of Science, Batman University, Batman, Turkey
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Abstract
HIV-1, a member of Retroviruses' Lentivirus family, is the causative agent of AIDS. The virus is common throughout the world and leaves the body vulnerable to infections by suppressing the human immune system. Reverse transcriptase and integrase are two of three HIV-1 essential enzymes which perform important virus life cycle functions. In recent years, researchers started to design new inhibitors which could inhibit multiple targets for treatment of AIDS. In respect to this, RT and IN are two enzymes suitable for the development of dual inhibitors. To realize this aim, here we have designed new inhibitors by using approved reverse transcriptase and integrase inhibitors as drug design templates. Totally 426 ligands, which are filtered from 858 ligands by druggability properties were docked to crystal structure of reverse transcriptase and since there was no full-length structure of HIV-1 IN, same ligands were docked to Prototype Foamy Virus integrase structure. From the docking results, B099 was determined to be the best binding ligand to RT enzyme with a binding free energy of -12.63 kcal/mole and B249 was the best ligand for IN enzyme with a score of -19.83 kcal/mole. These binding scores demonstrate that these ligands are more active than Raltegravir for integrase and Rilpivirine for reverse transcriptase which are also used for docking method validation. B205, B214, B233, B242, B246, B249, B253 and B254 are the some of ligands found to have good binding scores for both enzymes and could be considered as new inhibitor candidates as dual inhibitors.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Selami Ercan
- School of Health Sciences, Department of Nursing, Batman University, Batman, Turkey
| | | | - Yusuf Şenses
- Institute of Science, Batman University, Batman, Turkey
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Ercan S, Şenyiğit B, Şenses Y. Dual inhibitor design for HIV-1 reverse transcriptase and integrase enzymes: a molecular docking study. J Biomol Struct Dyn 2019; 38:573-580. [DOI: 10.1080/07391102.2019.1700166] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Selami Ercan
- School of Health Sciences, Department of Nursing, Batman University, Batman, Turkey
| | | | - Yusuf Şenses
- Institute of Science, Batman University, Batman, Turkey
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Çakmak R, Ercan S, Sünkür M, Yılmaz H, Topal G. Design, preparation and application of a Pirkle-type chiral stationary phase for enantioseparation of some racemic organic acids and molecular dynamics studies. ACTA ACUST UNITED AC 2017. [DOI: 10.25135/acg.oc.25.17.07.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Öztürk G, Subari S, Şeker S, Toğrul M, Kocakay ŞÖ, Ercan S, Pirinççioğlu N. A facile synthesis of amide-based receptors under microwave conditions: investigation of their anion recognition properties by experimental and computational tools. J Mol Model 2017; 23:249. [DOI: 10.1007/s00894-017-3390-0] [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] [Received: 01/09/2017] [Accepted: 06/22/2017] [Indexed: 11/24/2022]
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Davutoglu V, Albayrak A, Oztuzcu S, Ercan S, Alici H, Ulasli M, Korkmaz M. P5440Circulating microRNA expression profiles of chronic rheumatic mitral valve disease in Endemic Region. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5440] [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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Alici H, Davutoglu V, Yuce M, Cakici M, Davutoglu S, Ercan S. P4548The relationship between sociologic aspects and rheumatic mitral valve disease severity in an endemic region. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4548] [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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Ercan S. Docking and Molecular Dynamics Calculations of Some Previously Studied and newly Designed Ligands to Catalytic Core Domain of HIV-1 Integrase and an Investigation to Effects of Conformational Changes of Protein on Docking Results. Journal of the Turkish Chemical Society, Section A: Chemistry 2016. [DOI: 10.18596/jotcsa.287327] [Citation(s) in RCA: 2] [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: 11/05/2022] Open
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Ozturk Fincan GS, Vural IM, Yildirim SS, Isli F, Dilekoz E, Ercan S, Sarioglu Y. Role of nicotinic acetylcholine receptor subtypes on nicotine's enhancing effect on electrical field stimulation elicited contractile responses in rabbit urine bladder. Eur Rev Med Pharmacol Sci 2016; 20:1636-1641. [PMID: 27160140] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE This study aims to investigate the contribution of presynaptic nicotinic acetylcholine receptors (nAChRs) sub-types to nicotine-induced enhancement in electrical field stimulation (EFS) EFS-mediated contractile responses in rabbit urine bladder smooth muscle preparations. MATERIALS AND METHODS Rabbit urine bladder smooth muscle strips were placed in organ baths containing 20 ml of an aerated Krebs-Henseleit solution, and contractions were recorded using isometric force displacement transducers. Following the acquisition of control EFS (60 V, 8 Hz, 1 ms) responses, nicotine was added to the bath at a 3×10-5 M concentration, and EFS responses were obtained. The effect of nAChR antagonists on nicotine-induced augmentation in EFS-mediated responses was investigated in the presence of hexamethonium, dihydro-β-erythroidine, mecamylamine, and α-bungarotoxin. RESULTS Tetrodotoxin (TTX; 10-6 M) completely blocked EFS-induced contractile responses in smooth muscle strips. Similarly, Atropine (10-6 M), when administered with α,β-methylene adenosine triphosphate (α,β-methylene-ATP) (10-5 M), completely blocked EFS responses. Nicotine significantly enhanced EFS-mediated contractile responses (23.67% ± 1.75). Nicotine-induced increases in EFS responses were largely inhibited by hexamethonium, mecamylamine, and dihydro-β-erythroidine, whereas α-bungarotoxin only partly inhibited these enhancements. CONCLUSIONS These findings demonstrate that EFS-induced neurogenic contractions in rabbit urine bladder smooth muscle strips are mediated by purinergic and cholinergic transmissions, and the α4β2, α3β4, and α7 sub-types of nAChRs contribute to the enhancement effect of nicotine on EFS-induced contractile responses.
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Affiliation(s)
- G S Ozturk Fincan
- Department of Medical Pharmacology, Faculty of Medicine, Gazi University, Ankara, Turkey.
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Agopcan Cinar S, Ercan S, Erol Gunal S, Dogan I, Aviyente V. The origin of exo-stereoselectivity of norbornene in hetero Diels–Alder reactions. Org Biomol Chem 2014; 12:8079-86. [DOI: 10.1039/c4ob01217h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yavuz F, Ozer O, Ercan S, Yuce M, Davutoglu V, Alici H, Pusuroglu H, Orkmez M, Kaplan M, Basanalan F, Tarakcioglu M. Relationship between coronary in-stent restenosis and plasma urotensin II level. Minerva Cardioangiol 2014; 62:297-303. [PMID: 24831766] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM In-stent restonosis is an important limitation for coronary stenting. The cause of in-stent restenosis is neointimal hyperplasia developed from smooth muscle and matrix. We aimed to investigate the association between urotensin II (U-II) and in-stent restenosis after coronary stenting, which causes endothelial and muscle proliferation and accumulation of collagen. METHODS Total 153 patient was enrolled to the study who meet criteria for angiographic indication underwent coronary artery angiography. All patients have history undergone for coronary stent implantation 3 to 9 months ago. In-stent restenosis is identified as ≥50% narrowing inside the stent. In-stent restenosis was observed in 73 and remaining of 80 patients revealed no critical lesion in stent on angiographic evaluation. Plasma level measurement of U-II was performed in all subjects. RESULTS Urotensin II levels were found to be significantly higher in Group I compared to Group II (1.44±0.74 ng/mL and 1.21±0.59 ng/mL, respectively, P=0.03). In a subgroup analysis, U-II levels were significantly higher in group I than group II in patients treated with bare metal stent (BMS) (1.50±0.76 ng/mL and 1.18±0.56 ng/mL, P=0.016); however, there was not significant change in patients treated with drug-eluted stent (1.26±0.64 ng/mL and 1.27±0.63 ng/mL, P=0.9). Multivariate statistical significance: negative correlation was found between in-stent restenosis and renin-angiotensin-system (RAS) blocker usage (P=0.040) and right coronary artery (RCA) lesion interventions (P=0.018). CONCLUSION This study revealed high plasma U-II level might be accepted as a risk factors for in-stent restenosis with BMS. In-stent restenosis is less developed after RCA interventions and taking drug of RAS blockages. Our study findings need to be confirmed in further studies.
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Affiliation(s)
- F Yavuz
- Department of Cardiology Gaziantep University, Gaziantep, Turkey -
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Oylumlu M, Dogan A, Ercan S, Davutoglu V. Where is the right ventricle? Case Reports 2014; 2014:bcr-2013-202760. [DOI: 10.1136/bcr-2013-202760] [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: 11/04/2022] Open
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Sucu M, Davutoğlu V, Özer H, Yüce M, Ercan S. OP-210 Ankle-Brachial Index in Neurocardiogenic Syncope Patients. Am J Cardiol 2014. [DOI: 10.1016/j.amjcard.2014.01.109] [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: 11/15/2022]
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Ercan S, Arslan N, Kocakaya SO, Pirinccioglu N, Williams A. Experimental and theoretical study of the mechanism of hydrolysis of substituted phenyl hexanoates catalysed by globin in the presence of surfactant. J Mol Model 2014; 20:2096. [PMID: 24562853 DOI: 10.1007/s00894-014-2096-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Accepted: 11/28/2013] [Indexed: 10/25/2022]
Abstract
The bimolecular rate constants for the globin- and alkali-catalysed hydrolysis of substituted phenyl hexanoates in the absence and presence of cetyltrimethylammonium bromide (CTAB) obey Brønsted equations with β(lg) = -0.53 (globin-catalysed), -0.68 (globin-catalysed in CTAB), -0.34 (in water) and -0.74 (in CTAB), respectively. The slopes indicate that the microsolvation environments associated with the transition states of the catalysed reactions are different from those that occur in aqueous medium. The slope (-0.74) for the reaction in CTAB implies that it proceeds in a less polar medium. The larger β(lg) value (-0.53) obtained for the globin-catalysed reaction compared to that for the uncatalysed one may be attributed to either the less polar microenvironments of the transition states or the involvement of one of the imidazole groups as a nucleophile. The results from a study of the effect of pH on the reactivity provide evidence for the latter assumption. All of the ligands were docked into the hydrophobic pocket of the protein, and the resulting docking scores ranged from -30.76 to -23.61 kcal mol⁻¹. Molecular dynamic simulations and MM-PBSA/GBSA calculations performed for the complexes gave insight into the binding modes of globin to the esters, which are consistent with experimental results. The calculations yielded comparable free energies of binding to the experimental ones for 4-nitrophenyl and 4-chloro-2-nitrophenyl hexanoates. In conclusion, information obtained from the linear free-energy relationship is still very useful for elucidating the mechanisms of organic reactions, including enzyme-catalysed reactions. This approach is further supported by the utilization of computational tools.
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Affiliation(s)
- Selami Ercan
- Faculty of Science and Literature, Department of Chemistry, University of Batman, Batman, Turkey
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Ozkan U, Osun A, Samancioglu A, Ercan S, Firat U, Kemaloglu S. The effect of bevacizumab and 5-Fluorouracil combination on epidural fibrosis in a rat laminectomy model. Eur Rev Med Pharmacol Sci 2014; 18:95-100. [PMID: 24452949] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE An animal model of laminectomy in rats was used to study scar tissue formation around the spinal cord. Bevacizumab (BV) [a recombinant, humanized, monoclonal antibody targeting vascular endothelial growth factor], 5-Fluorouracil (5-FU) and BV+5-FU was tested in this system for its ability to decrease fibrous tissue formation. MATERIALS AND METHODS Twenty-eight Sprague Dawley rats were used in this sudy. Rats were divided into four groups; a control group, a BV group, a 5-FU group and a BV+5-FU group. L1-2 laminectomies were performed on the rats. The medicated groups were treated with topical drug administration. After 6 weeks, the rats were sacrified and histologic sections prepared from the spines were examined and graded by a pathologist. Epidural fibrosis and fibroblast density were evaluated under light microscope. RESULTS BV (Avastin: Genentech, San Francisco, CA, USA) significantly reduced the density of the scar tissue undermining the laminas (p < 0.005). Monotherapy with 5-FU did not change the scar formation in the back (p = 0.317). Combination of 5-FU and BV was more effective on reducing the epidural fibrosis after laminectomy on rats (p < 0.001). CONCLUSIONS Bevacizumab reduced the spinal epidural fibrosis significantly that developed in rats after laminectomy and 5-Fluorouracil combination had a synergic effect. Further investigations under the light of these findings may help to reduce epidural fibrosis formation after laminectomy.
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Affiliation(s)
- U Ozkan
- Department of Neurosurgery, Dumlupinar University Medical Faculty, Kütahya, Turkey.
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Yesilada O, Birhanli E, Ozmen N, Ercan S. Highly stable laccase from repeated-batch culture of Funalia trogii ATCC 200800. Prikl Biokhim Mikrobiol 2014; 50:65-71. [PMID: 25272754] [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: 06/03/2023]
Abstract
The effect of temperature, pH, different inhibitors and additives on activity and stability of crude laccase obtained from repeated-batch culture of white rot fungus Funalia trogii ATCC 200800 was studied. The crude enzyme showed high activity at 55-90 degrees C, which was maximal at 80-95 degrees C. It was highly stable within the temperature intervals 20-50 degrees C. The half life of the enzyme was about 2 h and 5 min at 60 degrees C and 70 degrees C, respectively. pH optimum of fungal laccase activity was revealed at pH 2.5. The enzyme from F. trogii ATCC 200800 was very stable between pH values of 3.0-9.0. NaN3 and KCN were detected as the most effective potent enzyme inhibitors among different compounds tested. The fungal enzyme was highly resistant to the various metal ions, inorganic salts, and organic solvents except propanol, at least for 5 min. Because of its high stability and efficient decolorization activity, the use of the crude F. trogii ATCC 200800 laccase instead of pure enzyme form may be a considerably cheaper solution for biotechnological applications.
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Ercan S, Goktepe F, Kisacik B, Pehlivan Y, Onat A, Yavuz F, Alici H, Davutoglu V. Subclinical cardiovascular target organ damage manifestations of ankylosing spondylitis in young adult patients. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1599] [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: 11/12/2022] Open
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Kisacik B, Basar N, Ercan S, Pehlivan Y, Yilmaz S, Simsek I, Erdem H, Ozer O, Pay S, Dinc A, Onat A. AB0008 Familial mediterranean fever (FMF) gene mutations (MEFV): are they a risk factor for coronary artery disease? Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.08] [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: 11/04/2022]
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Ercan S, Kaplan M, Aykent K, Davutoglu V. Sudden death after normal coronary angiography and possible causes. Case Reports 2013; 2013:bcr-2013-008753. [DOI: 10.1136/bcr-2013-008753] [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: 11/04/2022] Open
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Soydinc E, Soydinc S, Arıturk Z, Tekbas E, Cakici M, Islamoglu Y, Ercan S, Sari I, Davutoglu V. Increased epicardial fat thickness is related with body mass index in women with polycystic ovary syndrome. Eur Rev Med Pharmacol Sci 2013; 17:2111-2113. [PMID: 23884834] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
AIM We aimed to investigate the relationship between PCOS and epicardial fat thickness with transthoracic echocardiography. PATIENTS AND METHODS PCOS patients were divided into two groups according to the lean or obesity status: PCOS patients with lean 34 subjects (BMI: 23.3±2.8; mean age: 25.5±4), PCOS patients with obese16 subjects (BMI: 32.3±7.6; mean age: 27.2±3.7) were compared with control healthy lean subjects (BMI: 23.5±1.7; mean age: 25.9±2.2). RESULTS There was increased epicardial thickness in obese PCOS subjects compared to lean PCOS subjects (6.3±0.9 mm, 4.7±0.5, respectively, p < 0.001). However, epicardial fat thickness between lean PCOS subjects and lean healthy control groups were not significantly varied (4.7±0.5 mm, 4.5±0.5, respectively, p = 0.6). There was increased epicardial thickness in obese PCOS subjects compared to lean healthy control subjects (6.3±0.9 mm, 4.5±0.5, respectively, p < 0.001). This sudy showed for the first time that increased epicardial fat thickness measured using transthoracic echocardiography is associated with increased BMI in PCOS subjects. CONCLUSIONS Epicardial fat thickness between lean PCOS subjects and lean healty control group were similar which indicate the importance of obesity in PCOS subjects.
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Affiliation(s)
- E Soydinc
- Department of Ginecology and Obstetrics, and 1Department of Cardiology; Faculty of Medicine, Dicle University, Diyarbakir, Turkey.
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Hugues T, Lacroix-Hugues V, Yaici K, Gibelin P, Cabrita I, Pires S, Nunes A, Sousa C, Cortez-Dias N, Pinto F, Hrynkiewicz-Szymanska A, Braksator W, Szymanski F, Chmielewski M, Dluzniewski M, Alonso Fernandez P, Andres Lahuerta A, Miro Palau V, Buendia Fuentes F, Igual Munoz B, Osa Saez A, Quesada Carmona A, Tejada Ponce D, Munoz B, Salvador Sanz A, Imamura S, Hirata KH, Kubo T, Orii M, Tanimono T, Takemoto K, Ino Y, Yamaguchi T, Imanishi T, Akasaka T, Kinoshita T, Asai T, Suzuki T, Krestjyaninov M, Ruzov V, Imamura S, Hirata KH, Kubo T, Orii M, Tanimoto T, Yamano T, Ino Y, Yamaguchi T, Imanishi T, Akasaka T, Junca Puig G, Sistach EF, Delgado Ramis L, Lopez Ayerbe J, Vallejo Camazon N, Gual Capllonch F, Teis Soley A, Camara Rosell M, Ruyra Baliarda X, Bayes-Genis A, Alonso fernandez P, Igual Munoz B, Andres Lahuerta A, Maceira Gonzalez A, Hernandez C, Bel Minguez A, Miro Palau V, Munoz Igual B, Montero Argudo A, Salvador Sanz A, Antit S, fennira S, Zairi I, Kamoun S, Kraiem S, Matsuyama A, Hirata KH, Kubo T, Orii M, Takemoto K, Tanimoto T, Yamano T, Ino Y, Imanishi T, Akasaka T, Van De Heyning C, Magne J, Pierard L, Davin L, Bruyere P, De Maeyer C, Paelinck B, Vrints C, Lancellotti P, Wang J, fang F, Liu M, Liang Y, Yu C, Lam Y, Kenny C, Monaghan M, Ercan S, Kervancioglu S, Davutoglu V, Cakici M, Ozkur A, Oylumlu M, Sari I, Sikora-Puz A, Mizia M, Gieszczyk-Strozik K, Matyjaszczyk-Zbieg K, Haberka M, Mizia-Stec K, Gasior Z, Wos S, Deja M, Jasinski M, Enescu O, florescu M, Mihalcea D, Rimbas R, Cinteza M, Vinereanu D. Club 35 Poster Session Wednesday 5 December * Right ventricular systolic function. Eur Heart J Cardiovasc Imaging 2012. [DOI: 10.1093/ehjci/jes247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Iliuta L, Uno K, Ebihara A, Hayashi N, Chigira M, Yoshikawa T, Kimura K, Yamagata H, Yatomi Y, Takenaka K, Neves A, Mathias L, Leshko J, Linask K, Henriques-Coelho T, Areias J, Huhta J, Barbier P, Castiglioni L, Colazzo F, Fontana L, Nobili E, Franzosi M, Li Causi T, Sironi L, Tremoli E, Guerrini U, Stankovic I, Claus P, Jasaityte R, Putnikovic B, Neskovic A, Voigt J, Kutty S, Attebery J, Yeager E, Truemper E, Li L, Hammel J, Danford D, Tumasyan L, Adamyan K, Chilingaryan A, Mjolstad O, Andersen G, Dalen H, Graven T, Kleinau J, Skjetne K, Haugen B, Sucu M, Uku O, Sari I, Ercan S, Davutoglu V, Ozer O, Kim S, Na JO, Im S, Choi C, Lim H, Kim J, Han S, Seo H, Park C, Oh D, Hammoudi N, Duprey M, Regnier P, Vignalou J, Boubrit L, Pousset F, Jobard O, Isnard R, Shin SH, Woo S, Kim D, Park K, Kwan J, Andersen G, Mjolstad O, Graven T, Kleinau J, Skjetne K, Haugen B, Dalen H, Grigoryan S, Tunyan L, Hazarapetyan L, Shkolnik E, Vasyuk Y, Nesvetov V, Ruddox V, Edvardsen T, Otterstad J, Patrianakos A, Zacharaki A, Kalogerakis A, Nyktari E, Psathakis E, Parthenakis F, Vardas P, Yodwut C, Weinert L, Lang R, Mor-Avi V, Bandera F, Arena R, Labate V, Castelvecchio S, Menicanti L, Guazzi M, Nedeljkovic I, Ostojic M, Stepanovic J, Giga V, Beleslin B, Popovic D, Djordjevic-Dikic A, Petrovic M, Nedeljkovic M, Seferovic P, Popovic D, Ostojic M, Popovic B, Petrovic M, Vujisic-Tesic B, Nedeljkovic I, Arandjelovic A, Banovic M, Seferovic P, Damjanovic S, Horovitz A, Iriart X, De Guillebon D, Reant P, Lafitte S, Thambo J, Venkatesh A, Shahgaldi K, Johnson J, Brodin L, Winter R, Sahlen A, Manouras A, Szulik M, Streb W, Kalarus Z, Kukulski T, Lesniak-Sobelga AM, Kostkiewicz M, Tomkiewicz-Pajak L, Olszowska M, Hlawaty M, Rubis P, Podolec P, Spinelli L, Di Panzillo EA, Morisco C, Crispo S, Trimarco B, Lutay Y, Parkhomenko A, Stepura A, Zamfir D, Tautu O, Nestoruc A, Onut R, Comanescu I, Scafa Udriste A, Dorobantu M, Guseva O, Zhuravskaya N, Bartosh-Zelenaya S, Zagatina A, Kekovic P, Isailovic-Kekovic M, Squeri A, Macri' G, Anglano F, Censi S, Conti R, Pizzarelli M, Trecroci U, Bosi S, Le Tourneau T, Probst V, Kyndt F, Duval D, Trochu J, Bernstein J, Hagege A, Levine R, Le Marec H, Schott J, Enache R, Muraru D, Popescu B, Mateescu A, Purcarea F, Calin A, Beladan C, Rosca M, Ginghina C, Urdaniz MM, Rodriguez Palomares JF, Rius JB, Acosta Velez JG, Garcia-Moreno LG, Tura GT, Alujas MTG, Mas PT, Masip AE, Dorado DG, Zito C, Cusma-Piccione M, Miceli M, Di Bella G, Mohammed M, Oreto L, Di Matteo I, Crea P, Alongi G, Carerj S, Mizariene V, Zaliaduonyte-Peksiene D, Vaskelyte J, Jonkaitiene R, Jurkevicius R, D'auria F, Stinziani V, Grego S, Polisca P, Chiariello L, Cardoso M, Almeida A, David C, Marques J, Jorge C, Silva D, Magalhaes A, Goncalves S, Diogo A, Shiran A, Adawi S, Sachner R, Asmer I, Ganaeem M, Rubinshtein R, Gaspar T, Necas J, Kovalova S, Bombardini T, Sicari R, Ciampi Q, Gherardi S, Costantino M, Picano E, Casartelli M, Bombardini T, Simion D, Gaspari M, Procaccio F, Tsatsopoulou A, Prappa E, Kalantzi M, Patrianakos A, Anastasakis A, Protonotarios N, Monteforte N, Bloise R, Napolitano C, Priori S, Davos C, Varela A, Tsilafakis C, Kostavassili I, Mavroidis M, Di Molfetta A, Musca F, Fresiello L, Santini L, Forleo G, Lunati M, Ferrari G, Romeo F, Moreo A, Lourenco M, Azevedo O, Machado I, Nogueira I, Fernandes M, Pereira V, Quelhas I, Lourenco A, Estensen M, Langesaeter E, Gullestad L, Aakhus S, Skulstad H, Gronlund C, Gustavsson S, Morner S, Suhr O, Lindqvist P, Sunbul M, Kepez A, Durmus E, Ozben B, Mutlu B, Esposito R, Santoro A, Ippolito R, Schiano Lomoriello V, De Palma D, Santoro C, Muscariello R, Ierano P, Galderisi M, Mohammed M, Zito C, Cusma-Piccione M, Di Bella G, Antonini-Canterin F, Taha N, Di Bello V, Vriz O, Pugliatti P, Carerj S, Beladan C, Popescu B, Calin A, Rosca M, Matei F, Enache E, Gurzun M, Ginghina C, Stanescu C, Manoliu V, Branidou K, Daha I, Baicus C, Adam C, Ene I, Dan G, Von Bibra H, Wulf G, Schuster T, Pfuetzner A, Heilmeyer P, Dobson G, Smith B, Grapsa J, Nihoyannopoulos P, Montoro Lopez M, Alonso Ladreda A, Florez Gomez R, Itziar Soto C, Rios Blanco J, Gemma D, Iniesta Manjavacas A, Moreno Yanguela M, Lopez Sendon J, Guzman Martinez G, O'driscoll J, Marciniak A, Perez-Lopez M, Sharma R, Bombardini T, Cini D, Gherardi S, Del Bene R, Serra W, Moreo A, Sicari R, Picano E, Fernandez Cimadevilla O, De La Hera Galarza J, Pasanisi E, Alvarez Pichel I, Diaz Molina B, Martin Fernandez M, Corros C, Lambert Rodriguez J, Sicari R, Jedrzychowska-Baraniak J, Jarosz K, Jozwa R, Kasprzak J, Mohty D, Petitalot V, El Hamel C, Damy T, Lavergne D, Echahidi N, Virot P, Cogne M, Jaccard A, Weng KP, Hsieh KS, Yang YY, Wutthachusin T, Kaier T, Grapsa J, Morgan D, Hakky S, Purkayastha S, Connolly S, Fox K, Ahmed A, Cousins J, Nihoyannopoulos P, Sveric K, Richter U, Wunderlich C, Strasser R, Spethmann S, Dreger H, Baldenhofer G, Mueller E, Stuuer K, Stangl V, Laule M, Baumann G, Stangl K, Knebel F, Ruiz Ortiz M, Mesa D, Delgado M, Romo E, Castillo F, Morenate M, Baeza F, Toledano F, Leon C, De Lezo JS, Ishizu T, Seo Y, Kameda Y, Enomoto M, Atsumi A, Yamamoto M, Nogami Y, Aonuma K, Theodosis-Georgilas A, Tountas H, Fousteris E, Tsaoussis G, Margetis P, Deligiorgis A, Katidis Z, Melidonis A, Beldekos D, Foussas S, Butz T, Faber L, Piper C, Reckefuss N, Wirdeier S, Van Bracht M, Prull M, Plehn G, Horstkotte D, Trappe HJ, Winter S, Martinek M, Ebner C, Nesser H, Kilickiran Avci B, Yurdakul S, Sahin S, Tanrikulu A, Ermis E, Aytekin S, Cefalu C, Barbier P, Santoro A, Ippolito R, Esposito R, Schiano Lomoriello V, De Palma D, Muscariello R, Galderisi M, Karamanou A, Hamodraka E, Vrakas S, Paraskevaides I, Lekakis I, Kremastinos D, Enache R, Piazza R, Muraru D, Mateescu A, Popescu B, Calin A, Beladan C, Rosca M, Nicolosi G, Ginghina C, Erdogan E, Bacaksiz A, Akkaya M, Tasal A, Vatankulu M, Turfan M, Sonmez O, Ertas G, Uyarel H, Goktekin O, Singelton J, Petraco R, Shaikh R, Cole G, Francis D, Manisty C, Almeida A, Cortez-Dias N, Sousa J, Carpinteiro L, Marques J, Silva D, Jorge C, Carrilho-Ferreira P, Pinto F, Diogo A, Kleczynski P, Legutko J, Rakowski T, Dziewierz A, Siudak Z, Zdzienicka J, Brzozowska-Czarnek A, Dubiel J, Dudek D, Carvalho MS, De Araujo Goncalves P, Dores H, Sousa P, Marques H, Pereira Machado F, Gaspar A, Aleixo A, Mota Carmo M, Roquette J, Obase K, Sakakura T, Matsushita S, Takeuchi M, Tamai S, Komeda M, Yoshida K, Jimenez Rubio C, Isasti Aizpurua G, Miralles Ibarra J, Gianstefani S, Catibog N, Whittaker A, Wathen P, Kogoj P, Reiken J, Monaghan M, Salvetti M, Muiesan M, Paini A, Agabiti Rosei C, Aggiusti C, Bertacchini F, Stassaldi D, Rubagotti G, Comaglio A, Agabiti Rosei E, Soldati E, Corciu A, Zucchelli G, Di Cori A, Segreti L, De Lucia R, Paperini L, Viani S, Vannozzi A, Bongiorni M, Kablak-Ziembicka A, Przewlocki T, Stepien E, Wrotniak L, Karch I, Podolec P, Kleczynski P, Rakowski T, Dziewierz A, Jakala J, Legutko J, Dubiel J, Dudek D. Poster session Friday 7 December - PM: Effect of systemic illnesses on the heart. Eur Heart J Cardiovasc Imaging 2012. [DOI: 10.1093/ehjci/jes266] [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: 11/12/2022] Open
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Montoro Lopez M, Iniesta Manjavacas A, De Torres Alba F, Lopez Fernandez T, De Celix MCGR, Gomez De Diego J, Ramirez U, Mesa J, Moreno Yanguela M, Lopez Sendon J, Shiina Y, Ernst S, Gatzoulis M, Li W, Cameli M, De Vito R, Di Giovanni A, Lisi M, Focardi M, Giacomin E, Bigio E, Mondillo S, Szymczyk E, Lipiec P, Michalski B, Szymczyk K, Rotkiewicz A, Wozniakowski B, Stefanczyk L, Kasprzak J, Luo X, Fang F, Lee AP, Lam Y, Sanderson JE, Kwong JS, Yu C, Nasis A, Moir S, Meredith I, Mottram P, Van Zalen J, Podd S, Raju P, Mcintosh R, Beale L, Brickley G, Sturridge L, Patel N, Lloyd G, Esteban Martinez F, Ariza Canete J, Casanova Martin M, Ciudad Caballero M, Trapiello Gonzalez L, Herrera Gutierrez N, Matei F, Beladan C, Popescu B, Calin A, Rosca M, Curea F, Calin C, Ginghina C, Baronaite-Dudoniene K, Vaskelyte JJ, Puodziukynas A, Smalinskas V, Urbonaite L, Botezatu CD, Enache R, Rosca M, Beladan CC, Calin A, Gurzun MM, Ginghina C, Popescu BA, Ercan S, Kervancioglu S, Davutoglu V, Cakici M, Ozkur A, Oylumlu M, Sari I, Faustino A, Paiva L, Providencia R, Trigo J, Botelho A, Costa M, Leitao-Marques A, Al Barjas M, Alwis L, Sonoda L, Balan K, Alqaseer M, Jelani A, Niaz K, Andres Lahuerta A, Igual Munoz B, Alonso Fernandez P, Maceira A, Cano O, Osca J, Sancho-Tello M, Jimenez Carreno R, De Munoz YR, De Ros JO, Bonanad Lozano C, Lopez-Lereu M, Monmeneu J, Estornell J, Igual Munoz B, Maceira A, Chaustre F, Sanchis J, Badr Eslam R, Pfaffenberger S, Marzluf B, Frey M, Bartko P, Babayev J, Kammerlander A, Maurer G, Mascherbauer J. Club 35 Poster session Friday 7 December: Dobutamine stress echo. Eur Heart J Cardiovasc Imaging 2012. [DOI: 10.1093/ehjci/jes262] [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: 11/13/2022] Open
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Acik DY, Sayiner Z, Yilmaz M, Akarsu E, Ozsan M, Koruk I, Ercan S, Sahin HH, Okan V, Pehlivan M. P-71 THERAPEUTIC PLASMA EXCHANGE IN PATIENTS WITH HYPERTRIGLYCERIDEMIA-INDUCED PANCREATITIS: CASE SERIES. Transfus Apher Sci 2012. [DOI: 10.1016/s1473-0502(12)70107-6] [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: 11/25/2022]
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Bilici A, Yapici HS, Ercan S, Seker M, Ustaalioglu BBO, Salman T, Orcun A, Gumus M. The prevalence and significance of autoantibodies in patients with non-Hodgkin's lymphoma: are they correlated with clinicopathological features? J BUON 2012; 17:502-507. [PMID: 23033289] [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] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
PURPOSE It is well known that an association exists between the pathogenesis of lymphomas and autoimmune diseases. Autoantibodies are detected at higher frequency in lymphoproliferative diseases, but neither the precise role of the immune system nor the cause of this is comprehensively understood. In this study we evaluated the presence and significance of some autoantibodies for patients with non- Hodgkin's lymphoma (NHL). METHODS 150 patients with NHL who had either newly diagnosed disease, or active disease being under chemotherapy or were disease-free during follow-up, were analyzed. The frequency of autoantibodies and the relationship between autoantibodies and several clinicopathological factors were evaluated. RESULTS The majority of the patients (50%) had diffuse large B-cell lymphoma (DLBCL). Thirty-two patients (21.4%) were newly diagnosed, 81 (54%) had active disease and were receiving chemotherapy and 37 (24.6%) were disease-free and followed-up. Fifty-one patients (34%) had stage IV disease. Antinuclear antibodies (ANA) were found in 7 (4.7%) patients, perinuclear anti-neutrophil cytoplasmic antibody (p-ANCA) in 10 (6.7%), anti dsDNA in 1 (0.7%), anti ssDNA in 16 (10.7%), anti Jo-1 in 3 (2%), anti-scleroderma antibody (anti Scl-70) in 4 (2.7%), and rheumatoid factor (RF) in 85 (56.7%) patients. No c7horbar;ANCA positivity was found. The mean levels of anti Jo-1 (p=0.028), anti ssDNA (p=0.014), c-ANCA (p=0.015), ANA (p=0.026) and RF (p=0.046) were significantly higher in cases with DLBCL compared to patients with non-DLBCL. In addition, in patients with newly diagnosed NHL the mean levels of anti Scl- 70 (p=0.023), anti Jo-1 (p7equals;0.017), and RF (p=0.046) were significantly higher than the other patient groups. No significant correlation was detected between the presence of autoantibodies and other clinicopathological factors. CONCLUSION Our results show that the frequency of autoantibodies is high in NHL patients, especially in DLBCL and newly diagnosed cases. Autoantibodies may be helpful for the diagnosis of autoimmune diseases, but regular and long follow-up is needed in NHL patients with high levels of autoantibodies.
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Affiliation(s)
- A Bilici
- Dr. Lutfi Kirdar Kartal Education and Research Hospital, Department of Medical Oncology, Istanbul
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Bilici A, Ustaalioglu BO, Ercan S, Orcun A, Seker M, Salepci T, Gumus M. 6610 POSTER The Significance of the Changing of Serum M30 and M65 Values After Chemotherapy and Relationship Between These Values and Clinicopathological Factors in Patients With Advanced Gastric Cancer. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)71921-9] [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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Ergenoglu MU, Ercan S, Yerebakan H, Pektok E, Kucukaksu S. Perioperative airway management strategy and posttransplant successful tracheal resection and reconstruction in a heart transplant candidate with post-intubation stenosis. Thorac Cardiovasc Surg 2011; 60:295-8. [PMID: 21512978 DOI: 10.1055/s-0030-1271014] [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: 10/18/2022]
Abstract
Post-intubation tracheal stenosis (PTS) is an important clinical situation. It is estimated to occur in approximately 5% to 20% of intubated or tracheostomized patients. PTS most commonly occurs after prolonged intubation, and the treatment options have been well discussed in the literature. However, in solid organ transplantation, the necessity of administering high doses of corticosteroids as well as immunosuppressive therapies may compromise the healing processes following tracheal resection and reconstruction, requiring different treatment strategies for simultaneous PTS. We present a patient suffering from end-stage heart failure and post-intubation tracheal stenosis along with our treatment strategy.
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Affiliation(s)
- M U Ergenoglu
- Department of Cardiovascular Surgery, Yeditepe University Hospital, Kadikoy, Istanbul, Turkey.
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Yuce M, Davutoglu V, Ozbala B, Ercan S, Kizilkan N, Akcay M, Sari I, Akkoyun C, Dogan A, Alici M, Yavuz F, Elbey M. OP-202: FRAGMENTED QRS IS PREDICTIVE OF MYOCARDIAL DYSFUNCTION, PULMONARY HYPERTENSION AND SEVERITY IN MITRAL STENOSIS. Int J Cardiol 2011. [DOI: 10.1016/s0167-5273(11)70242-x] [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: 11/17/2022]
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Tamer L, Ercan B, Ercan S, Ateş N, Ateş C, Ocal K, Dirlik M, Aydin S, Atik U. CYP2C19 Polymorphisms in Patients with Gastric and Colorectal Carcinoma. ACTA ACUST UNITED AC 2006; 37:1-5. [PMID: 17290075 DOI: 10.1385/ijgc:37:1:1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 11/30/1999] [Revised: 11/30/1999] [Accepted: 11/30/1999] [Indexed: 11/11/2022]
Abstract
BACKGROUND It has been reported that up to 80% of human cancers arise as a consequence of environmental exposure and host susceptibility factors. Environmental carcinogens are predominantly metabolized by the cytochrome P450 (CYP) superfamily of drug- or xenobiotic-metabolizing enzymes. Genetic variations in these enzymes affect individuals' susceptibility to carcinogens. AIM OF THE STUDY The aim of this study was to evaluate the relationship between CYP2C19 polymorphism and susceptibility to these cancers by means of CYP2C19 genotyping among Turkish subjects. METHODS DNAof subjects were isolated from leukocytes by high pure template preparation kit (Roche Diagnostics, GmbH, Mannheim, Germany) and genotypes were detected by LightCycler CYP2C19 Mutation Detection Kit by real-time PCR with LightCycler instrument (Roche Diagnostics, cat. no. 3113914). RESULTS Being male was associated with a 3.5-fold (OR: 4.27, CI: 2.27-8.05) and 4.27-fold (OR: 3.50, CI: 1.948-6.301) risk for colorectal and gastric carcinoma, respectively. The CYP2C19*3 heterozygote genotype was not found in either gastric or colorectal carcinoma patients. Although the frequency of CYP2C19*2 heterozygote genotype is high in patients with gastric and colorectal carcinoma, it is not significantly associated with cancer (OR: 1.79, CI: 0.829-3.865 and OR: 1.998, CI: 0.961-4.154, respectively). CONCLUSION Although the frequency of CYP2C19*2 heterozygote genotype is high in our patients with gastric and colorectal carcinoma, there is no the relationship between CYP2C19 polymorphism and susceptibility to these cancer.
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Affiliation(s)
- L Tamer
- Department of Biochemistry, Mersin University, Turkey.
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Dogulu FH, Ozogul C, Akpek S, Kurt G, Emmez H, Ercan S, Baykaner MK. Intra-arterial simultaneous administration of anandamide attenuates endothelin-1 induced vasospasm in rabbit basilar arteries. Acta Neurochir (Wien) 2003; 145:579-82. [PMID: 12910401 DOI: 10.1007/s00701-003-0039-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 10/26/2022]
Abstract
BACKGROUND Anandamide induces not only endothelium-dependent vasodilatation through cannabinoid receptors but also some endothelium- independent vasodilator effect by calcitonin gene-related peptide release through vanilloid receptors. Endothelin-1, a powerful vasoconstrictive peptide derived from endothelial cells, has been shown to be converted to its active form after cleaving by a vascular matrix metalloproteinase which is also involved in inactivation of calcitonin gene-related peptide. The purpose of this study was to investigate whether anandamide inhibits the acute vascular and morphological effects of Endothelin-1 applied intra-arterially on rabbit basilar arteries. METHOD Fifteen albino rabbits were anaesthetised and underwent placement of a vertebral artery catheter for angiography of the basilar artery. Animals were divided, arbitrarily, into animals in which there was either intra-arterial injection of saline (Group I, n=5), Endothelin-1 (Group II, n=5) and Endothelin-1 and anandamide (Group III, n=5). The diameter of the basilar artery between the pre and post injection angiograms was measured in each of the three groups and transmission electron microscopic investigations on basilar arteries were performed. FINDINGS Angiographic studies showed that simultaneous administration of anandamide significantly attenuated Endothelin-1 induced vasoconstriction. Furthermore, it was demonstrated that anandamide reversed the morphological changes induced by Endothelin-1 on the vessel wall. INTERPRETATION These results indicated that anandamide overcomes the angiographic and morphological effects of intrarterially administered ET-1 induced vasospasm in rabbit basilar arteries probably by induction of CGRP related vasodilatation through vanilloid receptors and prevents the acute ET-1 induced ultrastructural vessel wall damage.
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Affiliation(s)
- F H Dogulu
- Department of Neurosurgery, Gazi University School of Medicine, Ankara, Turkey.
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Abstract
Gastroesophageal reflux is a major postoperative problem in esophageal patients with cancer, and the principal cause is resection of the lower esophageal sphincter. Two new antireflux operations to solve this problem were investigated. The number of patients studied was 139, with a male to female ratio of 5. The reservoir technique was applied to the first 50 patients and the globe technique was used in the remaining 89. Hospital mortality was 9.35%. Patient satisfaction from a reflux standpoint was excellent in 91.4%, good to fair in 6.5%, and poor in 2.1%. Postoperative barium swallow at the first, third, and sixth months showed no reflux in 93% of cases. Postoperative preanastomotic mean pressure was 14.2 mmHg. Postoperative mucosal biopsies revealed a remarkable reduction in esophagitis. The radiologic, manometric, and histologic findings as well as the patient satisfaction rate suggest that these antireflux operations are suitable and effective for patients undergoing esophageal resection and intrathoracic esophagogastric anastomosis.
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Affiliation(s)
- E Yalav
- VKV American Hospital, Department of General Thoracic Surgery, Güzel Bahçe Sok, 80200 Istanbul, Turkey
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Aktas S, Ercan S, Candan L, Moralar U, Akata E. Early mobilization after sliding and Z-lengthening of heel cord: a preliminary experimental study in rabbits. Arch Orthop Trauma Surg 2001; 121:87-9. [PMID: 11195128 DOI: 10.1007/s004020000160] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Sliding lengthening and Z-lengthening techniques are widely used in heel cord lengthening. Even though most surgeons performing these procedures apply a short leg cast after surgery, their postoperative immobilization intervals vary from 3 to 7 weeks. Nather et al. showed that there was no need for immobilization after the musculotendinous lengthening of long, deep flexor tendons. In the present study, we aimed to show the healing process of heel cords lengthened by sliding and Z-plasty lengthening in rabbits that did not undergo any postoperative immobilization. We performed sliding lengthening in the right heel cords of the rabbits and Z-lengthening in the left heel cords. We compared these two techniques radiographically, biomechanically, and histopathologically. Even though the biomechanical study showed superior results in the sliding lengthening group on the 7th day, elongation of the tendons at both sites was seen radiographically. There was no statistically significant difference between the sites according to the biomechanical study done on the 28th day. We concluded that the ankle should be immobilized in the early healing phase and that both types of lengthening gain a similar level of strength by the 4th week.
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Affiliation(s)
- S Aktas
- Trakya University Faculty of Medicine, Orthopaedic Surgery Department, Edirne, Turkey.
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Aktas S, Pekindil G, Ercan S, Pekindil Y. Acetabular dysplasia in normal Turkish adults. Bull Hosp Jt Dis 2001; 59:158-62. [PMID: 11126719] [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] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
The aim of this investigation was to examine normal hip joint morphometry and the acetabular dysplasia rate in Turkish adults. Center-edge angle, acetabular angle, acetabular depth, acetabular roof obliquity, and roof angle were measured in standardized pelvic radiographs of 495 adults without any hip symptoms. The center-edge angle was significantly different in the patients over the age of 70 than all other age groups except those in the 60 to 69 group. Additionally, there were differences between those in the 60 to 69 age group compared to those in the 20 to 29 age group. The acetabular angle showed a significant difference between gender and between the age groups over 60. The acetabular angle was negatively correlated with center-edge angle. Even though no significant differences were observed in the acetabular depth, differences in acetabular roof obliquity and roof angle were related to gender and age, all showed high standard deviations. The rate of acetabular dysplasia was 2.4% in the Turkish adult population aged 20 to 79. It is concluded that the center-edge angle may be a useful parameter in the evaluation of acetabular dysplasia if one is aware of its difference in patients over the age of 60.
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Affiliation(s)
- S Aktas
- Department of Orthopaedics and Traumatology, Trakya University, Edirne, Turkey
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Zonüzi F, Ercan S, Cakalagaoglu F, Yüksel M. Comparison of omentum, pleura and diaphragm for tracheal autograft survival in rats. Eur J Cardiothorac Surg 1999; 16:392-4. [PMID: 10554871 DOI: 10.1016/s1010-7940(99)00232-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Pleura, diaphragm, pericardial fat pad, intercostal muscles and omentum can be used to protect and revascularize the bronchial suture line. To compare the efficiency of pleura, diaphragm and omentum, an experimental study was designed. Heterotopic tracheal autotransplantation was performed in 15 rats. Animals were divided into three groups; omentum, diaphragm and pleura. Tracheal Segment Necrosis Scoring System was used for pathologic examinations. Pleural and diaphragmatic groups showed the least necrosis and there was significant statistical difference among these groups and omental group (P < 0.05). Our study showed that pleura and diaphragm could be used as safely as omentum for protection and survival of bronchial suture lines.
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Tekin E, Taneri F, Ersoy E, Bozkurt S, Yavuzer R, Ercan S, Oguz M. Ileal and colonic contractions by endothelin-1 in experimentally induced paralytic ileus in rats. Gen Pharmacol 1999; 32:631-5. [PMID: 10401987 DOI: 10.1016/s0306-3623(98)00264-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The aim of the present study was to investigate the effect of endothelin-1 on the isolated distal ileum and proximal colon in an experimentally induced ileus in rats. Ileal and colonic contractions by endothelin-1, acetylcholine alone and with endothelin-1 were recorded both in normal and experimentally induced paralytic ileus in rats. In the control group, all the responses to acetylcholine were found to be potentiated significantly when used together with endothelin-1 but in paralytic ileus group, no detectable change was observed in the responses of the amine after administration of acetylcholine together with endothelin-1. This study indicates that endothelin-1 might have an effect on gastrointestinal motility and postoperative paralytic ileus.
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Affiliation(s)
- E Tekin
- Department of General Surgery, Gazi University Medical Faculty, Ankara, Turkey
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Ercan S, Yüksel M, Batirel HF, Yildizeli B. Tracheal prostheses. Ann Thorac Surg 1999; 67:1215-6. [PMID: 10320301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Yildizeli B, Yüksel M, Ercan S, Batirel HF. Multiple primary lung carcinomas. J Thorac Cardiovasc Surg 1999; 117:405-6. [PMID: 10049037 DOI: 10.1016/s0022-5223(99)70451-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
In this study, the effects of BQ123 (an ET(A) receptor antagonist), bosentan (a nonselective ET(A)-ET(B) antagonist), and phosphoramidon (an endothelin converting enzyme inhibitor) were investigated on intestinal mucosal lesion formation and changes in tissue PGE2 and LTC4 levels due to intestinal ischemia-reperfusion (I/R) injury in rats. Following 30 min of ischemia, the substances were given via the inferior caval vein, and 10 min later the intestine was subjected to reperfusion for 30 min. The intestinal specimens were evaluated both microscopically and the tissue PGE2 and LTC4 levels were obtained for each group. The histopathologic examination revealed a significant reduction in tissue injury in both BQ123 and phosphoramidon pretreated groups compared with the control group. Bosentan, on the contrary, did not decrease the injury. The pharmacologic examination revealed a significant reduction of PGE2-like activity in both BQ123 and phosphoramidon pretreated groups, compared with the control group, while LTC4-like activity remained unchanged except for an increase in the bosentan pretreated group.
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Affiliation(s)
- A Z Anadol
- Department of General Surgery, Gazi University, Ankara, Turkey.
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Uǧar D, Türker M, Ercan S. L-N-nitro arginine methyl ester exhibits antinociceptive activity in rabbits. Br J Oral Maxillofac Surg 1998. [DOI: 10.1016/s0266-4356(98)90585-x] [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: 10/26/2022]
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