Results 61 to 70 of about 3,523,720 (291)

Frequency of quinolone resistance genes among extended-spectrum β-lactamase (ESBL)-producing Escherichia coli strains isolated from urinary tract infections

Tropical Medicine and Health, 2019
BackgroundAs an opportunistic pathogen, Escherichia coli (E. coli) is widely recognized as the main cause of nosocomial infections as well as some disorders especially those associated with urinary tract infections (UTIs). This study, therefore, sets out
Ahmad FarajzadehSheikh, H. Veisi, M. Shahin, M. Getso, A. Farahani   +4 more
semanticscholar   +1 more source

Effect of efflux pump inhibition on Pseudomonas aeruginosa transcriptome and virulence [PDF]

, 2017
Efflux pumps of the resistance-nodulation-cell-division (RND) family increase antibiotic resistance in many bacterial pathogens, representing candidate targets for the development of antibiotic adjuvants.
Baldelli, Valerio, Bondã¬, Roslen, Imperi, Francesco, Leoni, Livia, Longo, Francesca, Messina, Marco, Pillai, Cejoice Ramachandran, Rampioni, Giordano, Visca, Paolo   +8 more
core   +2 more sources

Characterization of Vibrio fluvialis qnrVC5 gene in native and heterologous hosts: Synergy of qnrVC5 with other determinants in conferring quinolone resistance

Frontiers in Microbiology, 2016
Resistance of various pathogens towards quinolones has emerged as a serious threat to combat infections. Analysis of plethora of genes and resistance mechanisms associated with quinolone resistance reveals chromosome-borne and transferable determinants ...
Kittappa eVinothkumar, G. eNaresh Kumar, Ashima eKushwaha Bhardwaj   +2 more
doaj   +1 more source

A mutational analysis and molecular dynamics simulation of quinolone resistance proteins QnrA1 and QnrC from Proteus mirabilis [PDF]

, 2010
Background The first report on the transferable, plasmid-mediated quinolone-resistance determinant qnrA1 was in 1998. Since then, qnr alleles have been discovered worldwide in clinical strains of Gram-negative bacilli.
Qinglan Guo, Jingwei Weng, Xiaogang Xu, Minghua Wang, Xiaoying Wang, Xinyu Ye, Wenning Wang, Minggui Wang   +7 more
core   +1 more source

Surface‐Bound Superoxide Radical‐Mediated Photo‐Fenton Mineralization of Ciprofloxacin on Fe‐Sillenite Nanosheets

Advanced Science, EarlyView.
This study systematically compares the degradation efficiency of CIP in a H2O2‐alone system and a novel Bi12FeO20‐H2O2 photo‐Fenton system. It reveals for the first time the presence of a quinone‐imine intermediate in the H2O2‐alone system, which exhibits toxicity comparable to CIP.
Wenting Qiu, Ji Liu, Hengjun Shang, Yaning Zhang, Shuai Dou, Jing Xu, Ying Zhang, Yang Lou, Yongfa Zhu, Chengsi Pan   +9 more
wiley   +1 more source

Analytical profiling of mutations in quinolone resistance determining region of gyrA gene among UPEC

PLoS ONE, 2018
Mutations in gyrA are the primary cause of quinolone resistance encountered in gram-negative clinical isolates. The prospect of this work was to analyze the role of gyrA mutations in eliciting high quinolone resistance in uropathogenic E.coli (UPEC ...
L. R. Varughese, M. Rajpoot, S. Goyal, R. Mehra, V. Chhokar, V. Beniwal   +5 more
semanticscholar   +1 more source

Clerocidin selectively modifies the gyrase-DNA gate to induce irreversible and reversible DNA damage [PDF]

, 2008
Clerocidin (CL), a microbial diterpenoid, reacts with DNA via its epoxide group and stimulates DNA cleavage by type II DNA topoisomerases. The molecular basis of CL action is poorly understood.
Binaschi, Borgnetto, Brown, Cambau, Champoux, Corbett, Corbett, Ferrero, Fisher, Gatto, Higgins, Kawada, L. M. Fisher, M. Dias, M. Palumbo, Marians, Maxam, McCullough, Mizuuchi, Morrison, Pan, Pan, Pan, Pan, Pan, Peden, Pozzi, Richter, Richter, Richter, Shea, X. S. Pan, Yague, Yoshida, Zechiedrich   +34 more
core   +1 more source

Mechanisms of Mitochondrial Toxicity and Cytotoxicity Caused by Pseudomonas aeruginosa Pyocyanin in Human Nasal Epithelial Cells

International Forum of Allergy &Rhinology, EarlyView.
ABSTRACT Background Pseudomonas aeruginosa is an opportunistic pathogen in cystic fibrosis‐related chronic rhinosinusitis (CF‐CRS) that produces phenazine metabolites pyocyanin and 1‐hydroxyphenazine (1‐HP), which may have detrimental effects on mitochondria, reactive oxygen species (ROS), Ca2+ signaling, and apoptosis.
Joel C. Thompson, April Park, Yobouet Ines Kouakou, Zoey A. Miller, Nabil F. Darwich, Nithin D. Adappa, James N. Palmer, Ryan M. Carey, Robert J. Lee   +8 more
wiley   +1 more source

Presence of plasmid-mediated quinolone resistance (PMQR) genes in non-typhoidal Salmonella strains with reduced susceptibility to fluoroquinolones isolated from human salmonellosis in Gyeonggi-do, South Korea from 2016 to 2019

Gut Pathogens, 2021
Non-typhoidal salmonellosis remains a pressing public health problem worldwide. Quinolones, particularly fluoroquinolones, are widely used to treat various infections, including non-typhoidal salmonellosis, which can be a serious illness.
Sohyun Lee, Nanjoo Park, Sujung Yun, Eunseon Hur, Jiwon Song, Hanna Lee, Yongsug Kim, Sangryeol Ryu   +7 more
doaj   +1 more source

Antimicrobial susceptibility of Neisseria gonorrheae strains in three regions of Armenia [PDF]

, 2007
OBJECTIVE: There are no data available on gonococcal susceptibility in the Caucasus region. We aimed to determine in vitro antimicrobial susceptibility of Neisseria gonorrheae in Armenia in order to update the national treatment protocol.
Borisenko, Clayes, Dorlencourt, Fenton, Singour, Vereshchagin, Waugh   +6 more
core   +2 more sources