نتایج جستجو برای: ژن qnrs
تعداد نتایج: 15995 فیلتر نتایج به سال:
background : plasmid mediated quinolone resistance (pmqr) has been shown to play an important role in resistance not only to quinolones, but also β-lactams and aminoglycosides. in fact, qnr genes are frequently carried along with β-lactamase determinants on the same plasmids. we studied the prevalence of qnra , qnrb , qnrs and aac(6’)-ib-cr genes among quinolone and cephalosporin resistant clin...
Methods From a total of 72 non-duplicate quinolone and cephalosporin resistant Enterobacteriacae obtained from October-December 2010 from Ahmadi hospital in Kuwait, 16 were K. pneumoniae. Antimicrobial susceptibility was determined by Vitek, Microscan, double disc diffusion, agar dilution and E-test against a panel of 26 antimicrobial agents. The presence of blaSHV, blaTEM, blaCTX-M, gyrA, parC...
The aim of this study was to explore the plasmid characteristics of eight clinical Enterobacteriaceae strains containing extended broad spectrum beta-lactamases and plasmid-mediated quinolone resistance. Plasmids were transferred by conjugation or transformation and resistance determinants were investigated by PCR. We showed that at least one plasmid harbouring qnrB or qnrS determinant was tran...
Emerging Infectious Diseases • www.cdc.gov/eid • Vol. 13, No. 5, May 2007 805 8. Poirel L, Leviandier C, Nordmann P. Prevalence and genetic analysis of plasmid-mediated quinolone resistance determinants QnrA and QnrS in Enterobacteriaceae in a French University Hospital. Antimicrob Agents Chemother. 2006;50:3992–7. 9. Carattoli A, Bertini A, Villa L, Falbo V, Hopkins KL, Threlfall EJ. Identifi ...
Background and purpose: Plasmid-medicated quinolone resistance (PMQR) genes play an important role in resistance to quinolones. The aim of this study was to determine the frequency of PMQR genes in extended-spectrum β-lactamase-producing (ESBL) Escherichia coli. Materials and methods: This study was done on 240 isolates of E.­coli from urine samples of patients in Kermanshah, Iran. Th...
زمینه و اهداف: وجود ژن‌های پلاسمیدی در باکتری‌ها عامل ایجاد مقاومت به داروهای کینولونی و فلوروکینولونی می‌باشد، این مطالعه باهدف ارزیابی حضور ژن‌های qnr و aac در جدایه های بالینی سودوموناس آئروژینوزا انجام شد. مواد و روش کار: در سال 1395 و در این مطالعه مقطعی تعداد 60 نمونه سودوموناس آئروژینوزا از منابع بالینی بیماران از آزمایشگاه سه بیمارستان در شهر کرمان جمع‌آوری شد. الگوی مقاومت آنتی‌بیوتیکی...
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