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Predictive analysis of transmissible quinolone resistance indicates
BMC Microbiology, 2008 Background Predicting antibiotic resistance before it emerges at clinical settings constitutes a novel approach for preventing and fighting resistance of bacterial pathogens.
Martínez-Martínez Luis +4 more
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Presence of
BMC Infectious Diseases, 2008 Background Quinolone resistance in Enterobacteriaceae results mainly from mutations in type II DNA topoisomerase genes and/or changes in the expression of outer membrane and efflux pumps.
Wang Chuanqing +13 more
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Molecular characterization of quinolone resistance genes (qnr) in Salmonella typhimurium isolated from food samples [PDF]
Bihdāsht-i Mavādd-i Ghaz̠āyī, 2017 Salmonellosis is an important disease in animals and human which is caused by different serovars of Salmonella enterica. Serovars Typhimurium is one of the most prevalent sorvars in humans.
K. Amini +2 more
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Antimicrobial Agents and Chemotherapy, 2008 Since the plasmid-borne quinolone resistance gene qnr was reported in 1998 (8), many additional qnr alleles have been discovered on plasmids or the bacterial chromosome (reviewed in references 9 and 13). The plasmid-borne qnr genes currently comprise three families, qnrA, qnrB, and qnrS, differing from each other 40% or more in nucleotide sequence ...
George, Jacoby +7 more
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QNR Optimization based Pansharpening [PDF]
IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium, 2008 Quality Without Reference (QNR) index can be used to globally assess the quality of pansharpened images without the need of a reference high resolution multispectral (MS) image. The QNR index relies on local calculation of the Q4 index. Exploiting the local Q4 calculation property of the QNR index, we propose an injection model for pansharpening.
Muhammad Murtaza Khan +2 more
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Prevalence of qnr genes in Salmonella in France [PDF]
Journal of Antimicrobial Chemotherapy, 2007 To detect the qnrA, qnrB and qnrS genes among Salmonella isolates received at the French National Reference Centre for Salmonella in Paris, France.Antibiotic susceptibility was determined by disc diffusion for 499 Salmonella isolates including 320 Salmonella Typhimurium, 100 Salmonella Enteritidis and 79 Salmonella Hadar collected in 2002 ...
Cattoir, Vincent +5 more
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Hyperspectral pansharpening using QNR optimization constraint [PDF]
2009 First Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing, 2009 This paper presents a method for pansharpening of low resolution Hyperspectral (HS) images. The proposed method is based upon the optimization of both the spectral and spatial quality criteria of the QNR quality assessment index. The simultaneous optimization of the spectral and spatial quality constraints is obtained by means of the Pareto solutions ...
Muhammad Murtaza Khan +2 more
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Effect of Qnr on Plasmid Gyrase Toxins CcdB and ParE [PDF]
Antimicrobial Agents and Chemotherapy, 2015 ABSTRACT Plasmid toxins CcdB and ParE are part of addiction systems promoting plasmid maintenance. Both target host DNA gyrase, as do quinolones and plasmid-determined Qnr proteins that protect gyrase from quinolone inhibition. We cloned qnrB4 , qnrS1 , ccdB ,
Yee Gyung, Kwak +2 more
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Phylogenetic Analysis of Chromosomally Determined Qnr and Related Proteins [PDF]
Antimicrobial Agents and Chemotherapy, 2013 ABSTRACT qnr genes were discovered on plasmids by their ability to reduce quinolone susceptibility, but homologs can be found in the genomes of at least 92 Gram-negative, Gram-positive, and strictly anaerobic bacterial species.
George A, Jacoby, David C, Hooper
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Dissemination of ESBL and Qnr determinants in Enterobacter cloacae in Algeria [PDF]
Journal of Antimicrobial Chemotherapy, 2008 The aim of this study is to evaluate the prevalence and diversity of extended-spectrum beta-lactamases (ESBLs) in Enterobacter cloacae clinical isolates collected from Algerian hospitals and to verify the association with qnr genes.MICs were determined by Etest for isolates giving positive double-disc synergy tests, and all isolates were screened by ...
Hassen, Iabadene +6 more
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