Kurum Yazarı "Özgümüş, Osman Birol" FEF, Biyoloji Bölümü Koleksiyonu İçin Listeleme
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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 ... -
Antimicrobial susceptibility and molecular characterization of multidrug-resistant acinetobacter baumannii isolated in an university hospital
Direkel, Şahin; Çiçek, Ayşegül Çopur; Karagöz, Alper; Aydoğan Ejder, Nebahat; Oktay, Efdal; Delialioğlu, Nuran; Özgümüş, Osman Birol; Durmaz, Rıza (Ankara Microbiology Soc, 2016)Acinetobacter baumannii, an aerobic, non-motile, gram-negative bacterium is an important nosocomial pathogen which shows resistance to the most antibiotics. Carbapenems are the most commonly used antibiotics for the treatment ... -
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 ... -
Class 1 and class 2 integrons and plasmid-mediated antibiotic resistance in coliforms isolated from ten rivers in northern Turkey
We aimed to determine the molecular mechanisms of antibiotic resistance in coliforms isolated from ten rivers in northern region of Turkey. A total of 183 isolates were tested for antimicrobial susceptibility by disk ... -
Determination and molecular analysis of antibiotic resistance in Gram-negative enteric bacteria isolated from Pelophylax sp. in the Eastern Black Sea Region (vol 69, pg 223, 2021)
Rakıcı, Erva; Altunışık, Abdullah; Şahin, Kazım; Özgümüş, Osman Birol (Akademia Kiado Zrt., 2021)The sentence 'However, two of three quinolone-resistant Klebsiella strains showed the novel amino acid substitution in the gyrA gene resulting in Ser83Asp and Asp87Glu.' should be corrected to 'However, one of three ... -
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 ... -
Investigation of antibiotic resistance profile and TEM-type β-lactamase gene carriage of ampicillin-resistant Escherichia coli strains isolated from drinking water
Karaoğlu, Şengül Alpay; Özgümüş, Osman Birol; Sevim, Elif; Kolaylı, Fetiye; Sevim, Ali; Yeşilgil, Pınar (Springer Verlag, 2007)Fifty-five ampicillin-resistant (Ampr) Escherichia coli strains were isolated from 51 drinking water points in Rize region containing abundant fresh water sources in Turkey during the years 2000 to 2002 and from January ... -
Molecular characterization of antibiotic resistant Escherichia coli strains isolated from tap and spring waters in a coastal region in Turkey
A hundred and seventeen antibiotic-resistant Escherichia coli strains were isolated from public tap and spring waters which were polluted by fecal coliforms. There were no significant differences between two water sources ... -
Molecular epidemiology of clinical Pseudomonas aeruginosa isolates carrying IMP-1 metallo-β-lactamase gene in a university hospital in Turkey
Özgümüş, Osman Birol; Caylan, Rahmet; Tosun, İlknur; Sandallı, Cemal; Aydın, Kemalettin; Köksal, İftihar (2007)Pseudomonas aeruginosa isolates carrying IMP- or VIM-type metallo-?-lactamase (MBL) have been increasingly reported in hospitals worldwide. One hundred P. aeruginosa clinical isolates from unrelated inpatients hospitalized ... -
Prevalence of integrons and a new dfrA17 variant in Gram-negative bacilli which cause community-acquired infections
Sandallı, Cemal; Buruk, Celal Kurtuluş; Sancaktar, Metin; Özgümüş, Osman Birol (Wiley, 2010)A hundred and eleven Gram-negative bacilli from community-acquired infections were characterized by antimicrobial susceptibility testing, screened for class 1 and 2 integrons, and statistically evaluated for the association ... -
Synthesis of some N-alkoxycarbonyl-N"-benzoyl-benzamidrazones(p- toluamidrazones) and 1,3,5-trisubstituted 1,2,4-triazole derivatives from N-benzoylimidates and their antimicrobial and anticancer screening studies
Bekircan, Olcay; Kahveci, Bahittin; Özgümüş, Osman Birol (Wiley, 2007)Some new N-alkoxycarbonyl-N?-benzoyl-benzamidrazones (p-toluamidrazones) 3a-3d, and 1,3,5-trisubstituted 1,2,4-triazole 4a-4h derivatives by starting from N-benzoylbenzimidates or N-benzoyl-p-toluimidates. The structures ...