Kurum Yazarı "Sandallı, Cemal" Tıp Fakültesi İçin Listeleme
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Anthocyanins profiling of Thymus praecox opiz subsp caucasicus var. caucasicus
Turumtay, Emine Akyüz; Turumtay, Halbay; Demir, Adem; Selvi, Emine Kılıçkaya; Yazıcı, Emre; Sandallı, Cemal; Yazıcı, Zihni Açar (Elsevier Science Bv, 2015)Thymus praecox Opiz subsp. caucasicus var. caucasicus (Anzer tea) was studied to determine its anthocyanin content; anthocyanin stability in response to acidic hydrolysis and temperature changes. in this study, anthocyanin ... -
Antibiotic resistance profiles of enteric cacteria isolated from Kucukcekmece Lagoon (Istanbul-Turkey)
Sivri, Nuket; Sandallı, Cemal; Özgümüş, Osman Birol; Çolakoğlu, Feyza; Doğan, Dilek (Central Fisheries Research Inst, 2012)The aim of this study is to find out the density of the fecal bacteria and to analyze resistance to antimicrobials of Gram negative bacilli isolated from the Kucukcekmece Lagoon, Istanbul. Samples were taken monthly from ... -
Antimicrobial resistance patterns and integron carriage of escherichia coli isolates causing community-acquired infections in Turkey
Çiçek, Ayşegül Çopur; Özgümüş, Osman Birol; Saral, Ayşegül; Sandallı, Cemal (Korean Soc Laboratory Medicine, 2014)We aimed to observe antimiCrobial resistance patterns and integron carriage of Escherichia coli isolates causing community-acquired infections. Two hundred sixty-eight E. coli strains were obtained from outpatients with ... -
Beta-lactamase genes in carbapenem resistance Acinetobacter baumannii isolates from a Turkish university hospital
Coşkun, Umut Safiye Say; Çalışkan, Emel; Çiçek, Ayşegül Çopur; Turumtay, Halbay; Sandallı, Cemal (J Infection Developing Countries, 2019)Introduction: the spread of Acinetobacter baumannii, resistant to most of the available antimicrobial agents, is a serious health problem. the high rate of carbapenem resistance among Acinetobacter baumannii isolates is ... -
Carriage of class 1 and 2 integrons in acinetobacter baumannii and pseudomonas aeruginosa isolated from clinical specimens and a novel gene cassette array: bla(OXA-11)-cmlA7
Mengeloğlu, Fırat Zafer; Çiçek, Ayşegül Çopur; Koçoğlu, Esra; Sandallı, Cemal; Budak, Emine Esra; Özgümüş, Osman Birol (Ankara Microbiology Soc, 2014)The dissemination of antibiotic resistance genes between bacteria leads to serious problems in the treatment of infectious diseases. It has been shown that resistance genes can also be carried by the integrons. There are ... -
Characterization of class 1 and class 2 integron gene cassettes in escherichia coil strains isolated from urine cultures: A multicenter study
Çopur Çiçek, Ayşegül; Sandallı, Cemal; Budak, Emine Esra; Yağmur, Gülhan; Çizmeci, Zeynep; Ak, Sibel; Balcı, Pervin Özlem; Say Coşkun, Safiye Umut; Ay Altıntop, Yasemin; Fırat, Mehmet; Sarı, Fatma; Çalışkan, Ahmet; Yıldız, Nazan; Sancaktar, Metin; Özgümüş, Osman Birol (Ankara Microbiology Soc, 2016)Escherichia coli is the most common pathogen isolated from both nosocomial and community acquired urinary tract infections. Although there are many studies from different centers concerning the antibiotic susceptibility ... -
Characterization of tetracycline resistance genes in tetracycline-resistant Enterobacteriaceae obtained from a coliform collection
Sandallı, Cemal; Özgümüş, Osman Birol; Sevim, Ali (Springer, 2010)Tetracycline resistance has been used as the key determinant to monitor resistance genes in natural environments such as rivers, lakes or seawater. The aim of this study was evaluate the frequency of tetA, tetB, tetC, tetD ... -
Cloning, expression, and characterization of a novel CTP synthase gene from Anoxybacillus gonensis G2
Sandallı, Cemal; Saral, Ayşegül; Ülker, Serdar; Karaoğlu, Hakan; Beldüz, Ali Osman; Çiçek, Ayşegül Çopur (2014)The cytidine-5'-triphosphate (CTP) synthase (EC 6.4.3.2) gene (pyrG) was cloned and sequenced from the thermophilic bacterium Anoxybacillus gonensis G2 (Ago). The gene is 1590 bp in length and encodes a protein of 530 amino ... -
Comparison of verona integron-borne metallo-beta-lactamase (VIM) variants reveals differences in stability and inhibition profiles
Makena, Anne; Düzgün, Azer Özad; Brem, Jurgen; McDonough, Michael A.; Rydzik, Anna M.; Abboud, Martine I.; Saral, Ayşegül; Çiçek, Ayşegül Çopur; Sandallı, Cemal; Schofield, Christopher J. (Amer Soc Microbiology, 2016)Metallo-beta-lactamases (MBLs) are of increasing clinical significance; the development of clinically useful MBL inhibitors is challenged by the rapid evolution of variant MBLs. the Verona integron-borne metallo-beta-lactamase ... -
Detection of class 1 integron in Acinetobacter baumannii isolates collected from nine hospitals in Turkey
Çiçek, Ayşegül Çopur; Düzgün, Azer Özad; Saral, Ayşegül; Kayman, Tuba; ÇIzmecI, Zeynep; Balci, Pervin Özlem; Dal, Tuba; Fırat, Mehmet; Tosun, İsmail; Altıntop, Yasemin Ay; Çalışkan, Ahmet; Yazıcı, Yelda; Sandallı, Cemal (Elsevier, 2013)Objective: To investigate the antibiotic resistance genes inserted into class 1 and class 2 integrons in Acinetobacter baumannii (A. baumannii) isolates obtained from nine different cities in Turkey. Methods: A collection ... -
Determination of a novel integron-located variant (bla(OXA-320)) of class D beta-lactamase in Proteus mirabilis
Çiçek, Ayşegül Çopur; Düzgün, Azer Özad; Saral, Ayşegül; Sandallı, Cemal (Wiley, 2014)Proteus mirabilis (P. mirabilis) is one of Gram-negative pathogens encountered in clinical specimens. A clinical isolate (TRP41) of P. mirabilis was isolated from a Turkish patient in Turkey. the isolate was identified ... -
Determination of the staphylococcal cassette chromosome in methicillin-resistant Staphylococcus aureus strains isolated from various clinical samples
Çiçek, Ayşegül Çopur; Dinç Patlak, Rukiye; Sandallı, Cemal; Mengeloglu, Zafer; Kostakoğlu, Uğur; Yıldız, İlknur Esen (Science & Innovation, Ltd, 2016)Aim - the present study aimed to detect mecA and staphylococcal cassette chromosome mec (SCCmec) types in methicillin-resistant Staphylococcus aureus (MRSA) isolates obtained from various clinical samples in two university ... -
Distribution of beta-lactamase genes among carbapenem-resistant klebsiella pneumoniae strains isolated from patients in Turkey
Iraz, Meryem; Düzgün, Azer Özad; Sandallı, Cemal; Doymaz, Mehmet Ziya; Akkoyunlu, Yasemin; Saral, Ayşegül; Peleg, Anton Y.; Özgümüş, Osman Birol; Beriş, Fatih Şaban; Karaoğlu, Hakan; Çiçek, Ayşegül Çopur (Korean Soc Laboratory Medicine, 2015)Background: the emergence of carbapenem-resistant Klebsiella pneumoniae poses a serious problem to antibiotic management. We investigated the beta-lactamases in a group of carbapenem-resistant K. pneumoniae clinical isolates ... -
Effect of mazEF, higBA and relBE toxin-antitoxin systems on antibiotic resistance in Pseudomonas aeruginosa and Staphylococcus isolates
Coşkun, Umut Safiye Say; Çiçek, Ayşegül Çopur; Kılınç, Çetin; Güçkan, Rıdvan; Dağcıoğlu, Yelda; Demir, Osman; Sandallı, Cemal (Med Coll Malawi, 2018)Background A toxin-antitoxin (TA) system is a set of two or more closely linked genes that are encoded as a poison and a corresponding antidote on a protein. in typical bacterial physiology, an antitoxin binds to a toxin ... -
Evaluation of the carbapenem inactivation method for detection of carbapenemase-producing gram-negative bacteria in comparison with the RAPIDEC CARBA NP
Aktaş, Elif; Malkoçoğlu, Gülşah; Otlu, Barış; Çiçek, Ayşegül Çopur; Kulah, Canan; Cömert, Füsun; Sandallı, Cemal; Gürsoy, Nafia Canan; Erdemir, Duygu; Bulut, Mehmet Emin (Mary Ann Liebert, Inc, 2017)Timely detection of carbapenemases by both phenotypic and genotypic methods is essential for developing strategies to control the spread of infections by carbapenem-resistant isolates and related morbidity and mortality. ... -
High prevalence of NDM metallo-β-lactamase among ESBL-producing Escherichia coli İsolates
Çetinkol, Yeliz; Sandallı, Cemal; Çalgın, Mustafa Kerem; Yıldırım, Arzu Altunçekiç; Akyıldız, Esma; Karaman, Esin; Çiçek, Ayşegül Çopur (Akademiai Kiado Zrt, 2017)Resistance to beta-lactams in Enterobacteriaceae has been increasing worldwide. This study aimed to determine the frequency of beta-lactamase genes and antibiotic resistance rates of 140 extended-spectrum beta-lactamase ... -
Kinetic characterization of GES-22 beta-lactamase harboring the M169L clinical mutation
Saral, Ayşegül; Leonard, David A.; Düzgün, Azer Özad; Çiçek, Ayşegül Çopur; June, Cynthia M.; Sandallı, Cemal (Japan Antibiotics Research Assoc, 2016)The class A p-lactamase GES-22 has been identified in Acinetobacter baumannii isolates in Turkey, and subsequently shown to differ from GES-11 by a single substitution (M169L). Because M169 is part of the omega loop, a ... -
Molecular characterisation and control of Acinetobacter baumannii isolates resistant to multi-drugs emerging in inter-intensive care units
Ertürk, Ayşe; Çiçek, Ayşegül Çopur; Gümüş, Aziz; Cüre, Erkan; Şen, Ahmet; Kurt, Aysel; Karagöz, Alper; Aydoğan, Nebahat; Sandallı, Cemal; Durmaz, Rıza (BmcBMC, 2014)Background: A nosocomial outbreak of Acinetobacter baumannii (AB) infections occurred among intensive care units (ICU) (surgery, medical, cardiovascular surgery, coronary unit) of Recep Tayyip Erdogan University Medical ... -
Nationwide study of Escherichia coli producing extended-spectrum beta-lactamases TEM, SHV and CTX-M in Turkey
Çiçek, Ayşegül Çopur; Saral, Ayşegül; Düzgün, Azer Özad; Yaşar, Ekrem; Çizmeci, Zeynep; Balcı, Pervin Özlem; Sarı, Fatma; Fırat, Mehmet; Altıntop, Yasemin Ay; Ak, Sibel; Çalışkan, Ahmet; Yıldız, Nazan; Sancaktar, Metin; Budak, Emine Esra; Ertürk, Ayşe; Özgüm, Osman Birol; Sandallı, Cemal (Nature Publishing Group, 2013)Four hundred and forty extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli isolates were collected from 10 different hospitals in Turkey between 2011 and 2012. Clinical specimens consisted of urine (80.45%), ... -
A Novel integron gene cassette harboring VIM-38 Metallo-beta-lactamase in a clinical pseudomonas aeruginosa isolate
Beriş, Fatih Şaban; Akyıldız, Esma; Düzgün, Azer Özad; Coşkun, Umut Safiye Say; Sandallı, Cemal; Çiçek, Ayşegül Çopur (Korean Soc Laboratory Medicine, 2016)Dear Editor, Multidrug resistance of Pseudomonas aeruginosa has been attributed to both intrinsic and acquired antibiotic-resistance mechanisms. Multidrug-resistant (MDR) P. aeruginosa isolates have become a serious ...