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- 저자 : Aysegul Copur-Cicek (검색결과 1 건)
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Aysegul Copur-Cicek,Osman Birol Ozgumus,Aysegul Saral,Cemal Sandalli 대한진단검사의학회 2014 Annals of Laboratory Medicine Vol.34 No.2
We aimed to observe antimicrobial resistance patterns and integron carriage of Esche- richia coli isolates causing community-acquired infections. Two hundred sixty-eight E. coli strains were obtained from outpatients with various infections at different polyclinics at the 82nd Year of State Hospital in Rize, Turkey. Susceptibility to antimicrobials was tested us- ing a disk diffusion method. The presence of integrons was examined using PCR with specific primers. Positive PCR results were confirmed by sequencing. A broth mating method was used for conjugation assays. Extragenic palindromic-PCR was performed us- ing the oligonucleotide primer BOXA1R. Resistance frequency for ampicillin, trime- thoprim/sulfamethoxazole, and tetracycline was determined as 50.6%, 33.5%, and 36.8% respectively. No strains were resistant to amikacin. Seventy isolates were positive for the intI1 gene, of which 49 carried gene cassettes. Eleven isolates were positive for the intI2 gene, eight of which carried gene cassettes. Seven gene cassettes ( dfrA1, dfrA5, dfrA7, dfrA17, aadA1, aadA5 , and sat2 ) were predominantly harbored in integrons. We detected conjugative plasmids harboring integrons in two E. coli strains. Four strain clus- ters were yielded by BOX-PCR fingerprints showing that they were clonally related. No ap- parent relationship occurred among class 1 and 2 integron-carrying strains. We conclude that integrons are widespread in genetically variable E. coli strains and will continue to mediate dissemination of resistance genes in the community.
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