Antimicrobial resistance, class 1 and 2 integrons and gene cassettes in avianEscherichia coli
نویسندگان
چکیده
منابع مشابه
Detection of gene cassettes in Tn402-like class 1 integrons.
Amplification of the gene cassettes in class 1 integrons by PCR using primers in the 5 conserved segment (5 -CS) and the 3 -CS (7, 8) has been used in hundreds of studies to identify integron-associated resistance genes (Fig. 1A). Equivalent PCR primers that detect cassettes in class 2 integrons, i.e., Tn7 family transposons (18), are also widely used. The approach used to detect integrons in a...
متن کاملOrigin of class 1 and 2 integrons and gene cassettes in a population-based sample of uropathogenic Escherichia coli.
The prevalence of urinary tract infections (UTI) caused by trimethoprim-sulfamethoxazole (TMP-SMX)-resistant Escherichia coli is increasing and varies geographically in the United States. Recent community-based UTI studies have demonstrated geographic clustering of an Escherichia coli clonal group, suggesting occurrence of a community outbreak of UTI. A large proportion of this clonal group (de...
متن کاملGene cassettes and cassette arrays in mobile resistance integrons.
Gene cassettes are small mobile elements, consisting of little more than a single gene and recombination site, which are captured by larger elements called integrons. Several cassettes may be inserted into the same integron forming a tandem array. The discovery of integrons in the chromosome of many species has led to the identification of thousands of gene cassettes, mostly of unknown function...
متن کاملIntegrons and the Origin of Antibiotic Resistance Gene Cassettes
I ntegrons, which are natural genetic engineering platforms, can incorporate open reading frames and convert them to functional genes by ensuring correct expression. Although such integrons play a major role in multidrug resistance phenomena among gram-negative species, similar platforms occur in numerous bacterial species, where they can play other roles. Meanwhile, we have evidence suggesting...
متن کاملAntimicrobial Resistance Pattern and Prevalence of Class 1, 2, and 3 Integrons in Clinical Isolates of Klebsiella Pneumoniae in Loghman-E Hakim Hospital, Tehran
Abstract Background and Objective: Multiple drug resistance has increased in recent years in Klebsiella pneumoniae isolates. The Integrons are mobile genetic elements that carry antibiotics resistance genes. The aim of this study was to determine antibiotic susceptibility and the prevalence of class 1, 2, and 3 integrons in clinical Klebsiella pneumoniae isolated from clinical specimens. Materi...
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ژورنال
عنوان ژورنال: Italian Journal of Animal Science
سال: 2008
ISSN: 1828-051X
DOI: 10.4081/ijas.2008.391