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Acta Microbiologica et Immunologica Hungarica
Authors: Akbari Mahdi, Niakan Mohammad, Taherikalani Morovat, Feizabadi Mhammad-Mahdi, Azadi Namam-Ali, Soroush Setareh, Emaneini Mohammad, Abdolkarimi Amir, Maleki Abbas, and Hematian Ali

The rapid identification of relevant bacterial pathogens is of utmost importance in clinical settings. The aim of this study was to test a rapid identification technique for A. baumannii strains from Tehran Hospitals and to determine the antibiotic resistance profiles of the isolates. A hundred strains of Acinetobacter spp. grown from clinical specimens were identified as A. baumannii by conventional methods. Using PCR a bla OXA-51 -like gene was detected in all A. baumannii isolates but not in other species of acinetobacter. More than half of the isolates proved resistant to a variety of antibiotics by the disk diffusion technique. The rate of resistance to gentamicin, imipenem, ampicillin-sulbactam and amikacin was determined to be 45%, 53%, 62% and 62%, respectively. Moreover, most isolates (more than 90%) showed resistance to cephalosporins. This study shows that the demonstration of the bla OXA-51-like gene is a reliable and rapid way for the presumptive identification of A. baumannii and reveals that the rate of antibiotic resistance is high in Iranian A. baumannii isolates to a variety of antibiotics.

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potentially pathogenic bacterial group and to determine its antimicrobial resistance profile [ 4 ]. In fact, Gram-positive bacteria often present high levels of antimicrobial resistance [ 5 ,  6 ]. Emergence of resistant bacteria is generally attributed to

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. : Antimicrobial resistance of Helicobacter pylori clinical strains in the last 10 years . Pol J Microbiol 58 ( 4 ), 301 – 305 ( 2009 ). 18. Karczewska , E. , Wojtas-Bonior , I

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Acta Microbiologica et Immunologica Hungarica
Authors: Reza Beigverdi, Fereshteh Jabalameli, Akbar Mirsalehian, Sedigheh Hantoushzadeh, Shahram Boroumandi, Morovat Taherikalani, and Mohammad Emaneini

.A., Manning, S.D., Marrs, C.F., Kurzynski, T.A., Foxman, B.: Frequency of antimicrobial resistance among invasive and colonizing group B streptococcal isolates. BMC Infect Dis 6 , 57 (2006). Foxman B

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Acta Microbiologica et Immunologica Hungarica
Authors: Milica Jovanović, Branko Milošević, Tanja Tošić, Goran Stevanović, Vesna Mioljević, Nikola Inđić, Branko Velebit, and Marcus Zervos

. Deshpande , L.M. , Fritsche , T.R. , Moet , G.J. , Biedenbach , D.J. , Jones , R.N. : Antimicrobial resistance and molecular epidemiology of vancomycin-resistant enterococci from North America and Europe: a report from the SENTRY antimicrobial

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, R. , Gyles , C. L. , Reid- Smith , R. , Janecko , N. , Lim , H. , Nicholson , V. , Mc Ewen , S. A. , Friendship , R. and Archambault , M. ( 2005 ): Antimicrobial resistance and virulence genes of Escherichia coli isolates from swine

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.8) CST-NS 24 4 (16.7) Note: AMR: antimicrobial resistance; BSI: bloodstream infection; MRSA: methicillin-resistant Staphylococcus

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1162 Breuil, J., Brisabois, A., Casin, I., Armand, L.L., Fermy, S. & Collatz, E. (2000): Antimicrobial resistance in Salmonella isolated from humans and animals in France

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antimicrobial resistance that poses a considerable threat in human and veterinary hospitals ( van der Kolk et al., 2019 ). Besides proper personal hygiene as well as equipment and environmental cleaning and disinfection, the active surveillance of pathogens in

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Acta Microbiologica et Immunologica Hungarica
Authors: Ewa Dworniczek, Justyna Piwowarczyk, Jacek Bania, Beata Kowalska-Krochmal, Ewa Wałecka, Alicja Seniuk, Izabela Dolna, and Grażyna Gościniak

Enterococci, a complex group of facultative pathogens have become increasingly isolated in various hospital settings. They are considerable frequently cultured from traumatic and surgical wounds. We investigated 57 strains of the species E. faecalis, E. faecium and E. casseliflavus isolated from infected wounds. Their ability to produce virulence factors and their sensitivity to antibiotics were evaluated using phenotypic and genotyping methods. In the phenotype studies, significant portion of the isolates produced biofilm (66.7%) and gelatinase (36.8%). Nearly 30% of the strains expressed hemolytic properties. Only a few produced DNAse (15.8%) and lipase (7.0%). The genes esp, gelE, cylA, cylB, cylM and agg were detected in most of the isolates (38.6–87.7%). All the isolated enterococci were susceptible to vancomycin and were characterized by their low resistance to antibiotics, except aminoglycosides (HLR).

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