Virulence factors and TEM-type β-lactamases produced by two isolates of an epidemic Klebsiella pneumoniae strain.

abstract：:Mechanism-based inactivators of beta-lactamases are used to overcome the resistance of clinical pathogens to beta-lactam antibiotics. This strategy can itself be overcome by mutations of the beta-lactamase that compromise the effectiveness of their inactivation. We used PCR mutagenesis of the TEM-1 beta-lactamase gene...

journal_title：Antimicrobial agents and chemotherapy

authors： Vakulenko SB,Geryk B,Kotra LP,Mobashery S,Lerner SA

更新日期：1998-07-01 00:00:00

abstract：:Mefloquine was found to have bactericidal activity against methicillin- and fluoroquinolone-susceptible and -resistant strains of Staphylococcus aureus and Staphylococcus epidermidis and gentamicin- and vancomycin-resistant strains of Enterococcus faecalis and Enterococcus faecium. The MICs were 16 microg/ml, and the ...

journal_title：Antimicrobial agents and chemotherapy

authors： Kunin CM,Ellis WY

更新日期：2000-04-01 00:00:00

abstract：:A novel gene cassette, aacA43, was identified in the aadB-aacA43-oxa10-smr2 cassette array in a class 1 integron. Like related aminoglycoside-(6')-acetyltransferases, AacA43 confers clinically relevant resistance to kanamycin, tobramycin, and some less-used aminoglycosides but not to gentamicin. Although transferable ...

journal_title：Antimicrobial agents and chemotherapy

authors： Partridge SR,Thomas LC,Ginn AN,Wiklendt AM,Kyme P,Iredell JR

更新日期：2011-06-01 00:00:00

abstract：:Porphyromonas gingivalis is a bacterial pathogen associated with chronic periodontitis that results in destruction of the tooth's supporting tissues. The major virulence determinants of P. gingivalis are its cell surface Arg- and Lys-specific cysteine proteinases, RgpA/B and Kgp. Lactoferrin (LF), an 80-kDa iron-bindi...

journal_title：Antimicrobial agents and chemotherapy

authors： Dashper SG,Pan Y,Veith PD,Chen YY,Toh EC,Liu SW,Cross KJ,Reynolds EC

更新日期：2012-03-01 00:00:00

abstract：:The capacity for intracellular growth is an important survival strategy for a large group of common pathogens. Helicobacter pylori, the etiological agent for gastritis and duodenal ulcer, has been shown by both in vivo and in vitro studies to have the capacity to invade epithelial cells. In vitro models are used to st...

journal_title：Antimicrobial agents and chemotherapy

authors： Hultén K,Rigo R,Gustafsson I,Engstrand L

更新日期：1996-12-01 00:00:00

abstract：:Pseudomonas aeruginosa is inherently resistant to most conventional antibiotics. The mechanism of resistance of this bacterium is mainly associated with the low permeability of its outer membrane to these agents. We sought to assess the bactericidal efficacy of liposome-entrapped aminoglycosides against resistant clin...

journal_title：Antimicrobial agents and chemotherapy

authors： Mugabe C,Halwani M,Azghani AO,Lafrenie RM,Omri A

更新日期：2006-06-01 00:00:00

abstract：:Fluoroquinolones are antibiotics with central excitatory side effects. These adverse effects presumably result from inhibition of gamma-aminobutyric acid (GABA) binding to GABA(A) receptors. This GABA antagonistic effect is greatly potentiated by the active metabolite of fenbufen, biphenylacetic acid (BPAA). Neverthel...

journal_title：Antimicrobial agents and chemotherapy

authors： Smolders I,Gousseau C,Marchand S,Couet W,Ebinger G,Michotte Y

更新日期：2002-02-01 00:00:00

abstract：:Previously, we reported potent activity of a novel spiropyrimidinetrione, zoliflodacin, against N. gonorrhoeae isolates from symptomatic men in Nanjing, China, collected in 2013. Here, we investigated trends of susceptibilities of zoliflodacin in 986 isolates collected from men between 2014 and 2018. N. gonorrhoeae is...

journal_title：Antimicrobial agents and chemotherapy

authors： Le W,Su X,Lou X,Li X,Gong X,Wang B,Genco CA,Mueller JP,Rice PA

更新日期：2020-12-14 00:00:00

abstract：:Activity of the new antiviral compound selenazofurin was compared with the known active compounds ribavirin and amantadine against influenza A and B viruses. In experiments with Madin Darby canine kidney cells, selenazofurin inhibited the cytopathic effect and yield of influenza A/NWS/33 virus, with 50% effective dose...

journal_title：Antimicrobial agents and chemotherapy

authors： Sidwell RW,Huffman JH,Call EW,Alaghamandan H,Cook PD,Robins RK

更新日期：1985-09-01 00:00:00

abstract：:Stenotrophomonas maltophilia is an emerging nosocomial pathogen that displays high-level intrinsic resistance to a variety of structurally unrelated antimicrobial agents. Efflux mechanisms are known to contribute to acquired multidrug resistance in this organism, and indeed, one such multidrug efflux system, SmeDEF, w...

journal_title：Antimicrobial agents and chemotherapy

authors： Zhang L,Li XZ,Poole K

更新日期：2001-12-01 00:00:00

abstract：:An efficient and reproducible procedure was developed for extracting aminoglycosides from renal cortical tissue. It involves a double homogenization and two rinsings with trichloroacetic acid. A higher recovery is obtained compared with that of other previously reported methods. ...

journal_title：Antimicrobial agents and chemotherapy

authors： Giuliano RA,Verpooten GA,Pollet DE,Verbist L,Scharpé SL,De Broe ME

更新日期：1984-06-01 00:00:00

abstract：:Levofloxacin is an antituberculosis drug with substantial interindividual pharmacokinetic variability; therapeutic drug monitoring (TDM) could therefore be helpful to improve treatment results. TDM would be more feasible with limited sampling strategies (LSSs), a method to estimate the area under the concentration cur...

journal_title：Antimicrobial agents and chemotherapy

authors： van den Elsen SHJ,Sturkenboom MGG,Van't Boveneind-Vrubleuskaya N,Skrahina A,van der Werf TS,Heysell SK,Mpagama S,Migliori GB,Peloquin CA,Touw DJ,Alffenaar JC

更新日期：2018-11-26 00:00:00

abstract：:Oral Fusobacterium nucleatum populations from 20 young, healthy children were examined for beta-lactamase production. Ten children (50%) harbored, altogether, 25 beta-lactamase-positive F. nucleatum isolates that were identified as F. nucleatum subsp. polymorphum, F. nucleatum subsp. nucleatum, and F. nucleatum subsp....

journal_title：Antimicrobial agents and chemotherapy

authors： Könönen E,Kanervo A,Salminen K,Jousimies-Somer H

更新日期：1999-05-01 00:00:00

abstract：:In Portugal erythromycin resistance of 26.6% (n = 352) remained constant during 1998 to 2003, however in 1998 the MLS(B) phenotype dominated (85%), whereas in 2003 the M phenotype prevailed (77%). A decline in T12/emm22 MLS(B) isolates could partially explain the drop in this phenotype, but the rise of the M phenotype...

journal_title：Antimicrobial agents and chemotherapy

authors： Silva-Costa C,Ramirez M,Melo-Cristino J,Portuguese Surveillance Group for the Study of Respiratory Pathogens.

更新日期：2005-05-01 00:00:00

abstract：:Since currently available therapies against HIV/AIDS still show important drawbacks, the development of novel anti-HIV treatments is a key issue. We recently characterized methylated oligoribonucleotides (mONs) that extensively inhibit HIV-1 replication in primary T cells at nanomolar concentrations. The mONs were sho...

journal_title：Antimicrobial agents and chemotherapy

authors： Avilov SV,Boudier C,Gottikh M,Darlix JL,Mély Y

更新日期：2012-02-01 00:00:00

abstract：:There has been major interest by the scientific community in antivirulence approaches against bacterial infections. However, partly due to a lack of viable lead compounds, antivirulence therapeutics have yet to reach the clinic. Here we investigate the development of an antivirulence lead targeting quorum sensing sign...

journal_title：Antimicrobial agents and chemotherapy

authors： Todd DA,Parlet CP,Crosby HA,Malone CL,Heilmann KP,Horswill AR,Cech NB

更新日期：2017-07-25 00:00:00

abstract：:Norfloxacin is a quinolone (pyridonecarboxylic acid derivative) effective against Pseudomonas aeruginosa infections. We studied the effects of this drug on DNA metabolism in P. aeruginosa. Norfloxacin inhibits DNA replication immediately on its addition to a logarithmically growing culture of P. aeruginosa. It inhibit...

journal_title：Antimicrobial agents and chemotherapy

authors： Benbrook DM,Miller RV

更新日期：1986-01-01 00:00:00

abstract：:Posaconazole in oral suspension must be taken multiple times a day with food (preferably a high-fat meal) to ensure adequate exposure among patients. We evaluated the effect of food on the bioavailability of a new delayed-release tablet formulation of posaconazole at the proposed clinical dose of 300 mg once daily in ...

journal_title：Antimicrobial agents and chemotherapy

authors： Kersemaekers WM,Dogterom P,Xu J,Marcantonio EE,de Greef R,Waskin H,van Iersel ML

更新日期：2015-01-01 00:00:00

abstract：:Pefloxacin has been shown to have good intraocular penetration when given systemically. In order to extend its clinical use, we have assessed the tolerability, kinetics, and efficacy of subconjunctival pefloxacin in phakic pigmented rabbits. The tolerability of a single subconjunctival injection of pefloxacin (0.8, 1....

journal_title：Antimicrobial agents and chemotherapy

authors： Marrakchi-Benjaafar S,Cochereau I,D'Hermies F,Pocidalo JJ

更新日期：1995-04-01 00:00:00

abstract：:The Carba NP test was evaluated against a panel of 244 carbapenemase- and non-carbapenemase-producing Enterobacteriaceae and Pseudomonas aeruginosa isolates. We confirmed the 100% specificity and positive predictive value of the test, but the sensitivity and negative predictive value were 72.5% and 69.2%, respectively...

journal_title：Antimicrobial agents and chemotherapy

authors： Tijet N,Boyd D,Patel SN,Mulvey MR,Melano RG

更新日期：2013-09-01 00:00:00

abstract：:Approximately 150,000 small-molecule compounds were tested by a robotic screening assay for their ability to inhibit nucleoside triphosphate hydrolase (NTPase), a novel enzyme of the tachyzoite form of Toxoplasma gondii. Five unrelated species of compounds were found to inhibit the activities of both NTPase isoforms (...

journal_title：Antimicrobial agents and chemotherapy

authors： Asai T,Takeuchi T,Diffenderfer J,Sibley LD

更新日期：2002-08-01 00:00:00

abstract：:Data on the effectiveness of ceftazidime-avibactam (CAZ-AVI) in critically ill, mechanically ventilated patients are limited. The present retrospective observational cohort study, which was conducted in two general intensive care units (ICUs) in central Greece, compared critically ill, mechanically ventilated patients...

journal_title：Antimicrobial agents and chemotherapy

authors： Tsolaki V,Mantzarlis K,Mpakalis A,Malli E,Tsimpoukas F,Tsirogianni A,Papagiannitsis C,Zygoulis P,Papadonta ME,Petinaki E,Makris D,Zakynthinos E

更新日期：2020-02-21 00:00:00

abstract：:We compared the inoculum effects for 109 recent clinical isolates of the Bacteroides fragilis group of cefoxitin, cefotetan, ceftizoxime, ceftriaxone, and three beta-lactamase inhibitors (clavulanic acid, sulbactam, and tazobactam) and their penicillin-derived components. Bactericidal activity was assayed and morpholo...

journal_title：Antimicrobial agents and chemotherapy

authors： Goldstein EJ,Citron DM,Cherubin CE

更新日期：1991-09-01 00:00:00

abstract：:A total of 201 Staphylococcus aureus isolates were surveyed for susceptibility to ciprofloxacin and trovafloxacin. Of 66 methicillin-resistant isolates, 89% were ciprofloxacin resistant and 6% were also trovafloxacin resistant. Trovafloxacin-resistant strains had unusual patterns of quinoline resistance mutations in D...

journal_title：Antimicrobial agents and chemotherapy

authors： Fitzgibbon JE,John JF,Delucia JL,Dubin DT

更新日期：1998-08-01 00:00:00

abstract：:Few studies have estimated the excess inpatient costs due to nosocomial cultures of Gram-negative bacteria (GNB), and those that do are often subject to time-dependent bias. Our objective was to generate estimates of the attributable costs of the underlying infections associated with nosocomial cultures by using a uni...

journal_title：Antimicrobial agents and chemotherapy

authors： Nelson RE,Stevens VW,Jones M,Khader K,Schweizer ML,Perencevich EN,Rubin MA,Samore MH

更新日期：2018-10-24 00:00:00

abstract：:Polyamine levels are greatly increased in alveolar macrophages (AMs) during Pneumocystis pneumonia (PCP), leading to increased production of H(2)O(2), which causes AMs to undergo apoptosis. One of the mechanisms by which polyamine levels in AMs are elevated is enhanced uptake of exogenous polyamines. In this study, th...

journal_title：Antimicrobial agents and chemotherapy

authors： Liao CP,Phanstiel O 4th,Lasbury ME,Zhang C,Shao S,Durant PJ,Cheng BH,Lee CH

更新日期：2009-12-01 00:00:00

abstract：:We describe the first IMP metallo-beta-lactamase in Aeromonas caviae: IMP-19, which differed from IMP-2 by a single amino acid change (Arg to Ala at position 38). bla(IMP-19) was found within a class 1 integron located on a 35-kb plasmid. This is also the first description of an IMP producer in France. ...

journal_title：Antimicrobial agents and chemotherapy

authors： Neuwirth C,Siebor E,Robin F,Bonnet R

更新日期：2007-12-01 00:00:00

abstract：:The pathogenic yeast Candida albicans displays at its cell surface beta-1,2 oligomannosides (beta-1,2-Mans). In contrast to the ubiquitous alpha-Mans, beta-1,2-Mans bind to galectin-3, a major endogenous lectin expressed on epithelial cells. The specific role of beta-1,2-Mans in colonization of the gut by C. albicans ...

journal_title：Antimicrobial agents and chemotherapy

authors： Dromer F,Chevalier R,Sendid B,Improvisi L,Jouault T,Robert R,Mallet JM,Poulain D

更新日期：2002-12-01 00:00:00

abstract：:The MICs of pyrazinamide (PZA) were determined for Mycobacterium tuberculosis cultivated under different pH conditions in 7H12 liquid medium. Mycobacterial growth was monitored by the radiometric method (BACTEC system; Johnston Laboratories, Inc., Towson, Md.). We observed a predictable eightfold difference between th...

journal_title：Antimicrobial agents and chemotherapy

authors： Salfinger M,Heifets LB

更新日期：1988-07-01 00:00:00

abstract：:Intranasal inoculation of newborn mice with Herpesvirus hominis type 2 provides an experimental infection that closely resembles disseminated herpesvirus infection of human newborn infants. After inoculation of mice, the virus multiplies in the respiratory tract and is disseminated through the blood to the liver and s...

journal_title：Antimicrobial agents and chemotherapy

authors： Kern ER,Overall JC Jr,Glasgow LA

更新日期：1975-05-01 00:00:00