نتایج جستجو برای: class 3 integron

تعداد نتایج: 2146248  

2015
Mai M. Malek Fatma A. Amer Ayman A. Allam Rehab H. El-Sokkary Tarek Gheith Mohamed A. Arafa

Integrons are genetic units characterized by the ability to capture and incorporate gene cassettes, thus can contribute to the emergence and transfer of antibiotic resistance. The objectives of this study were: (1) to investigate the presence and distribution of class I and class II integrons and the characteristics of the gene cassettes they carry in Enterobacteriaceae isolated from nosocomial...

Journal: :BMC Infectious Diseases 2006
Caterina Mammina Aurora Aleo Cristina Romani Antonino Nastasi

BACKGROUND Emergence and global dissemination of multiresistant strains of enteric pathogens is a very concerning problem from both epidemiological and Public Health points of view. Shigella sonnei is the serogroup of Shigella most frequently responsible for sporadic and epidemic enteritis in developed countries. The dissemination is associated most often to human to human transmission, but foo...

Journal: :The Journal of antimicrobial chemotherapy 2008
Elisabete Machado Teresa M Coque Rafael Cantón João Carlos Sousa Luísa Peixe

OBJECTIVES To investigate the diversity of integrons and extended-spectrum beta-lactamases (ESBLs) among Enterobacteriaceae from chickens and swine in Portugal and analyse the clonal relationships between Portuguese ESBL-producing isolates of animal and human origin. METHODS We analysed samples from faeces of healthy swine (HSF, n = 35), from uncooked chicken carcasses (CM, n = 20) and from f...

Journal: :Antimicrobial agents and chemotherapy 1999
L Bass C A Liebert M D Lee A O Summers D G White S G Thayer J J Maurer

Antibiotic resistance among avian bacterial isolates is common and is of great concern to the poultry industry. Approximately 36% (n = 100) of avian, pathogenic Escherichia coli isolates obtained from diseased poultry exhibited multiple-antibiotic resistance to tetracycline, oxytetracycline, streptomycin, sulfonamides, and gentamicin. Clinical avian E. coli isolates were further screened for th...

Journal: :The Journal of antimicrobial chemotherapy 2014
Vincenzo Di Pilato Simona Pollini Gian Maria Rossolini

OBJECTIVES VIM-type enzymes are among the most widespread acquired metallo-β-lactamases among Gram-negative pathogens. Integron In70 is a class 1 integron that has emerged as a successful genetic support for blaVIM-1 (one of the most prevalent blaVIM allelic variants) in Gram-negative non-fermenters, and is usually chromosome borne. The objective of this study was to characterize plasmid pAX22 ...

2013
Ying Xu Qing-quan Luo Ming-guo Zhou

Four streptomycin-resistant isolates of Xanthomonas oryzae pv. oryzae (YNA7-1, YNA10-2, YNA11-2, and YNA12-2) were examined via PCR amplification for the presence of class 1, class 2, and class 3 integrons and aadA1 and aadA2 genes, which confer resistance to streptomycin and spectinomycin. The class 1 integrase gene intI1 and the aminoglycoside adenylyltransferase gene aadA1 were identified in...

حاجی احمدی, فهیمه, ربیعی, مژگان, صفری, نسیم, عربستانی, محمد رضا, علیجانی, پگاه, معصومیان, ندا,

Introduction: Due to the increasing trend of antibiotic resistance in the Enterobacteriaceae family, treatment of infections caused by these bacteria has been difficult. The aim of this study was to identify of class I and II integrons and associated gene cassettes in clinical isolates of Escherichia coli and Klebsiella pneumonia. Methods: In this cross-sectional study, of 500 strains isolat...

Journal: :Antimicrobial agents and chemotherapy 2005
Laurent Poirel Laura Brinas Annemie Verlinde Louis Ide Patrice Nordmann

Screening by a double-disk synergy test identified a Pseudomonas aeruginosa isolate that produced a clavulanic acid-inhibited expanded-spectrum beta-lactamase (ESBL). Cloning and sequencing identified a novel ESBL, BEL-1, weakly related to other Ambler class A ESBLs. beta-Lactamase BEL-1 hydrolyzed significantly most expanded-spectrum cephalosporins and aztreonam, and its activity was inhibited...

Journal: :iranian red crescent medical journal 0
emad yahaghi department of microbiology, damghan branch, islamic azad university, damghan, iran abbas ali imani fooladi applied microbiology research center, baqiyatallah university of medical sciences, tehran, ir iran; applied microbiology research center, baqiyatallah university of medical sciences, tehran, ir iran. tel: +98-9122269267 mohsen amin department of drug and food control, tehran university of medical sciences, tehran, ir iran reza mirnejad molecular biology research center, baqiyatallah university of medical sciences, tehran, ir iran reza nezamzade department of microbiology, damghan branch, islamic azad university, damghan, iran jafar amani applied microbiology research center, baqiyatallah university of medical sciences, tehran, ir iran

conclusions findings of this study showed that integron can have a limited frequency in s. aureus isolated from clinical sample in tehran. results among the 200 samples, 1% of the strains (two isolates) contained the class 1 integron gene. the results of this study showed that the highest frequency of the obtained samples belonged to males and the isolates occurred mostly in individuals aged 51...

Journal: :The Journal of antimicrobial chemotherapy 2011
Sidharth Chopra Amit Galande

Recently another MITE-like structure, called the integron mobilization unit (IMU), has been described flanking a defective class 1 integron harbouring a carbapenem resistance gene, blaGES-5, in a clinical Enterobacter cloacae strain. Although the IMU sequence is not related to the MITE reported in our study, IMU-based mobilization of the integron could be demonstrated using a transposase provid...

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