Novel quinolone resistance mutations of the Escherichia coli DNA gyrase A protein: enzymatic analysis of the mutant proteins.

abstract：:We studied the biochemical mechanisms associated with inhibition and resistance to a 4,5-dihydroxypyrimidine carboxylate that inhibits the hepatitis C virus (HCV) RNA-dependent RNA polymerase NS5B. On the basis of the structure of the pharmacophore, it has been suggested that these compounds may act as pyrophosphate (...

journal_title：Antimicrobial agents and chemotherapy

authors： Powdrill MH,Deval J,Narjes F,De Francesco R,Götte M

更新日期：2010-03-01 00:00:00

abstract：:Defensins are small cationic bactericidal peptides present abundantly in the granules of polymorphonuclear neutrophils (PMNs). Human PMNs contain four defensins termed HNP-1 to HNP-4. We used a new assay system in agar plates, the radial diffusion assay, to evaluate the effects of human defensins against gram-positive...

journal_title：Antimicrobial agents and chemotherapy

authors： Takemura H,Kaku M,Kohno S,Hirakata Y,Tanaka H,Yoshida R,Tomono K,Koga H,Wada A,Hirayama T,Kamihira S

更新日期：1996-10-01 00:00:00

abstract：:Difloxacin, A-56620, cefazolin, cefotaxime, ceftizoxime, cephapirin, SK&F 88070, and spectinomycin were used to compare the in vitro susceptibilities of Mycobacterium avium-M. intracellular isolates from patients with acquired immunodeficiency syndrome (AIDS), patients without AIDS, and diseased animals. Against the i...

journal_title：Antimicrobial agents and chemotherapy

authors： Byrne SK,Geddes GL,Isaac-Renton JL,Black WA

更新日期：1990-07-01 00:00:00

abstract：:For 177 gram-negative isolates, the MICs for ciprofloxacin ranged from 0.02 microgram/ml (Escherichia coli) to 0.31 microgram/ml (Pseudomonas aeruginosa). In time-kill curves, ciprofloxacin at 8 X the MIC almost completely killed 10(6) CFU of P. aeruginosa by 24 h. Ciprofloxacin at 4 X the MIC allowed bacterial regrow...

journal_title：Antimicrobial agents and chemotherapy

authors： Rudin JE,Norden CW,Shinners EM

更新日期：1984-10-01 00:00:00

abstract：:Clindamycin was given intravenously to 15 patients undergoing colorectal surgery in an initial dose of 600 mg, given at induction of anesthesia followed by 6 doses of 600 mg at 8-h intervals. Series of serum samples and fecal specimens were taken for analysis of clindamycin concentrations. Tissue samples from the gut ...

journal_title：Antimicrobial agents and chemotherapy

authors： Kager L,Liljeqvist L,Malmborg AS,Nord CE

更新日期：1981-12-01 00:00:00

abstract：:Between February and June of 1997, a large number of community-acquired respiratory tract isolates of Haemophilus influenzae (n = 1,077) and Moraxella catarrhalis (n = 503) from 27 U.S. and 7 Canadian medical centers were characterized as part of the SENTRY Antimicrobial Surveillance Program. Overall prevalences of be...

journal_title：Antimicrobial agents and chemotherapy

authors： Doern GV,Jones RN,Pfaller MA,Kugler K

更新日期：1999-02-01 00:00:00

abstract：:A sequential therapy of caspofungin (CAS) and fluconazole (FLC) administration for treatment of Candida albicans infection was investigated. Treatment with CAS followed by FLC was as effective as CAS treatment given alone for the same duration. Our data suggest that switching from CAS to FLC is a potentially explorabl...

journal_title：Antimicrobial agents and chemotherapy

authors： Barchiesi F,Spreghini E,Baldassarri I,Marigliano A,Arzeni D,Giannini D,Scalise G

更新日期：2004-10-01 00:00:00

abstract：:There is significant interest in the development of mass spectrometry (MS) methods for antimicrobial resistance protein detection, given the ability of these methods to confirm protein expression. In this work, we studied the performance of a liquid chromatography, tandem MS multiple-reaction monitoring (LC-MS/MS MRM)...

journal_title：Antimicrobial agents and chemotherapy

authors： Wang H,Strich JR,Drake SK,Chen Y,Youn JH,Rosenberg AZ,Gucek M,Dekker JP,Suffredini AF

更新日期：2019-08-23 00:00:00

abstract：:The interaction between four fluoroquinolones (ciprofloxacin, norfloxacin, pefloxacin, and ofloxacin) and biofilms of Pseudomonas aeruginosa in wells of microtiter plates and on segments of vascular catheters were studied in an in vitro model of vascular catheter colonization. Subinhibitory concentrations (one-half, o...

journal_title：Antimicrobial agents and chemotherapy

authors： Yassien M,Khardori N,Ahmedy A,Toama M

更新日期：1995-10-01 00:00:00

abstract：:Vancomycin resistance in Enterococcus faecium 180, a clinical isolate from England, was studied. Resistance to vancomycin was transferable by conjugation to other enterococci. Expression of resistance was inducible and coincided with the appearance of a new membrane protein. ...

journal_title：Antimicrobial agents and chemotherapy

authors： Nicas TI,Wu CY,Hobbs JN Jr,Preston DA,Allen NE

更新日期：1989-07-01 00:00:00

abstract：:Filibuvir and VX-222 are nonnucleoside inhibitors (NNIs) that bind to the thumb II allosteric pocket of the hepatitis C virus (HCV) RNA-dependent RNA polymerase. Both compounds have shown significant promise in clinical trials and, therefore, it is relevant to better understand their mechanisms of inhibition. In our s...

journal_title：Antimicrobial agents and chemotherapy

authors： Yi G,Deval J,Fan B,Cai H,Soulard C,Ranjith-Kumar CT,Smith DB,Blatt L,Beigelman L,Kao CC

更新日期：2012-02-01 00:00:00

abstract：:Amphotericin B (AMB) has been a mainstay therapy for fungal infections of the central nervous system, but its use has been limited by its poor penetration into the brain, the mechanism of which remains unclear. In this study, we aimed to investigate the role of P-glycoprotein (P-gp) in AMB crossing the blood-brain bar...

journal_title：Antimicrobial agents and chemotherapy

authors： Wu JQ,Shao K,Wang X,Wang RY,Cao YH,Yu YQ,Lou JN,Chen YQ,Zhao HZ,Zhang QQ,Weng XH,Jiang C,Zhu LP

更新日期：2014-08-01 00:00:00

abstract：:Moxalactam (LY127935) exhibited greater in vitro activity than cefamandole and tobramycin against clinical isolates of Enterobacteriaceae, Aeromonas hydrophila, and Pseudomonas maltophilia. The activities of the three drugs against other microorganisms were as follows: for staphylococci, cefamandole = tobramycin great...

journal_title：Antimicrobial agents and chemotherapy

authors： Jones RN,Fuchs PC,Sommers HM,Gavan TL,Barry AL,Gerlach EH

更新日期：1980-04-01 00:00:00

abstract：:The effects of trifluorothymidine (5-trifluoromethyl-2'-deoxyuridine, F3dThd) on the replication of three mouse cell lines, LM929, Ltk- (and LM929 derivative devoid of cytosolic deoxythymidine [dThd] kinase activity), and Ltk- c139 (a Ltk- derivative which expresses herpes simplex virus type 1-specified dThd kinase su...

journal_title：Antimicrobial agents and chemotherapy

authors： Wigdahl BL,Parkhurst JR

更新日期：1981-05-01 00:00:00

abstract：:Establishing an effective empirical antifungal therapy requires that national surveillance studies be conducted. Herein, we report the clinical outcome of infections with and the microbiological features of Iranian isolates of Candidaglabrata derived from patients suffering from candidemia. C. glabrata isolates were r...

journal_title：Antimicrobial agents and chemotherapy

authors： Arastehfar A,Daneshnia F,Zomorodian K,Najafzadeh MJ,Khodavaisy S,Zarrinfar H,Hagen F,Zare Shahrabadi Z,Lackner M,Mirhendi H,Salehi M,Roudbary M,Pan W,Kostrzewa M,Boekhout T

更新日期：2019-06-24 00:00:00

abstract：:MICs of daptomycin, linezolid, and vancomycin against 212 isolates, including Listeria monocytogenes and Pediococcus, Leuconostoc, Rhodococcus, and Nocardia spp., were determined by the broth microdilution method; daptomycin MICs were also determined by the Etest. Except with those for Leuconostoc spp., daptomycin Ete...

journal_title：Antimicrobial agents and chemotherapy

authors： Huang YT,Liao CH,Teng LJ,Hsueh PR

更新日期：2007-04-01 00:00:00

abstract：:A sensitive, precise microbiological assay was developed for the determination of tissue distribution of dl-alanosine, a new antitumor agent. ...

journal_title：Antimicrobial agents and chemotherapy

authors： Pittillo RF,Woolley C

更新日期：1973-06-01 00:00:00

abstract：:Alalevonadifloxacin (WCK 2349) is a novel l-alanine ester prodrug of levonadifloxacin that is being developed as an oral fluoroquinolone antibiotic. The primary objective of this study was to determine and compare plasma, epithelial lining fluid (ELF), and alveolar macrophage (AM) concentrations of levonadifloxacin fo...

journal_title：Antimicrobial agents and chemotherapy

authors： Rodvold KA,Gotfried MH,Chugh R,Gupta M,Yeole R,Patel A,Bhatia A

更新日期：2018-02-23 00:00:00

abstract：:Increasingly frequent reports have described the in vivo loss of daptomycin susceptibility in association with clinical treatment failures. The mechanism(s) of daptomycin resistance is not well understood. We studied an isogenic set of Staphylococcus aureus isolates from the bloodstream of a daptomycin-treated patient...

journal_title：Antimicrobial agents and chemotherapy

authors： Jones T,Yeaman MR,Sakoulas G,Yang SJ,Proctor RA,Sahl HG,Schrenzel J,Xiong YQ,Bayer AS

更新日期：2008-01-01 00:00:00

abstract：:Gentamicin and tobramycin inhibited the accumulation of extracellular proteases secreted by Pseudomonas aeruginosa. The secretion of protease was inhibited at concentrations of these drugs that were below the level required to inhibit general protein synthesis. Neither magnesium ions nor high ionic strength antagonize...

journal_title：Antimicrobial agents and chemotherapy

authors： Warren RL,Baker NR,Johnson J,Stapleton MJ

更新日期：1985-04-01 00:00:00

abstract：:MICs of Bay 12-8039 and comparative antimicrobials were determined for 820 recent clinical isolates. Ciprofloxacin was approximately 2-fold more active than Bay 12-8039 and ofloxacin against Enterobacteriaceae and approximately 8-fold more active against Pseudomonas aeruginosa. Bay 12-8039 was approximately 2- to 16-f...

journal_title：Antimicrobial agents and chemotherapy

authors： Fass RJ

更新日期：1997-08-01 00:00:00

abstract：:Inter- and intralaboratory reproducibility of susceptibility testing requires stable control strains. The Food and Drug Administration diffusion procedure recommends the Seattle strains of Staphylococcus aureus (ATCC 25923) and Escherichia coli (ATCC 25922) for this purpose. It was of interest to determine the present...

journal_title：Antimicrobial agents and chemotherapy

authors： Coyle MB,Lampe MF,Aitken CL,Feigl P,Sherris JC

更新日期：1976-09-01 00:00:00

abstract：:The role of inhalational combination therapy when treating carbapenem-resistant Pseudomonas aeruginosa and Klebsiella pneumoniae with newer beta-lactam/beta-lactamase inhibitors has not been established. Using a 72-h in vitro pharmacodynamic chemostat model, we simulated the human exposures achieved in epithelial lini...

journal_title：Antimicrobial agents and chemotherapy

authors： Almarzoky Abuhussain SS,Kuti JL,Nicolau DP

更新日期：2018-06-26 00:00:00

abstract：:The in vitro potency and in vivo efficacy of Q-35, a new fluoroquinolone, against Mycoplasma pneumoniae were investigated by pharmacokinetic studies with M. pneumoniae-infected hamsters. By using fluoroquinolones, macrolides, and tetracyclines as references, Q-35 was found to possess the greatest mycoplasmacidal activ...

journal_title：Antimicrobial agents and chemotherapy

authors： Gohara Y,Arai S,Akashi A,Kuwano K,Tseng CC,Matsubara S,Matumoto M,Furudera T

更新日期：1993-09-01 00:00:00

abstract：:The efficacy of ciprofloxacin for experimental aortic valve endocarditis in rabbits infected by either a methicillin-susceptible or a methicillin-resistant strain of Staphylococcus aureus was compared with standard therapy of nafcillin or vancomycin, respectively. After 4 days of therapy, ciprofloxacin reduced the cou...

journal_title：Antimicrobial agents and chemotherapy

authors： Carpenter TC,Hackbarth CJ,Chambers HF,Sande MA

更新日期：1986-09-01 00:00:00

abstract：:Hemolytic-uremic syndrome (HUS) is a serious complication of infection by Shiga toxin-producing Escherichia coli. Shiga toxin type 2 (Stx2) is responsible for the renal toxicity that can follow intestinal infection and hemorrhagic colitis due to E. coli. A chimeric mouse-human antibody, designated c alpha Stx2, that h...

journal_title：Antimicrobial agents and chemotherapy

authors： Dowling TC,Chavaillaz PA,Young DG,Melton-Celsa A,O'Brien A,Thuning-Roberson C,Edelman R,Tacket CO

更新日期：2005-05-01 00:00:00

abstract：:The in vitro susceptibility of Mycobacterium fortuitum and Mycobacterium chelonei to cefmetazole was studied by the agar dilution method. At a concentration of 16 micrograms/ml or lower, 44 isolates (96%) of M. fortuitum and 8 isolates (40%) of M. chelonei were inhibited. ...

journal_title：Antimicrobial agents and chemotherapy

authors： Casal MJ,Rodriguez FC,Benavente MC

更新日期：1985-02-01 00:00:00

abstract：:Antibiotic resistance in bacteria is ever changing and adapting, as once-novel β-lactam antibiotics are losing their efficacy, primarily due to the production of β-lactamases. Metallo-β-lactamases (MBLs) efficiently inactivate a broad range of β-lactam antibiotics, including carbapenems, and are often coexpressed with...

journal_title：Antimicrobial agents and chemotherapy

authors： LaCuran AE,Pegg KM,Liu EM,Bethel CR,Ai N,Welsh WJ,Bonomo RA,Oelschlaeger P

更新日期：2015-12-01 00:00:00

abstract：:A spontaneous Escherichia coli mutant, named Q3, resistant to nalidixic acid was obtained from a previously described clinical isolate of E. coli, Q2, resistant to fluoroquinolones but susceptible to nalidixic acid (E. Cambau, F. Bordon, E. Collatz, and L. Gutmann, Antimicrob. Agents Chemother. 37:1247-1252, 1993). Q3...

journal_title：Antimicrobial agents and chemotherapy

authors： Truong QC,Nguyen Van JC,Shlaes D,Gutmann L,Moreau NJ

更新日期：1997-01-01 00:00:00

abstract：:We assessed the in vitro toxicity of tenofovir (TFV) and compared it with those of zidovudine (AZT), didanosine (ddI), ritonavir (RTV), and lopinavir (LPV) alone and in combination in human renal proximal tubule epithelial cells (RPTECs). The cells were treated with various concentrations and combinations of the teste...

journal_title：Antimicrobial agents and chemotherapy

authors： Vidal F,Domingo JC,Guallar J,Saumoy M,Cordobilla B,Sánchez de la Rosa R,Giralt M,Alvarez ML,López-Dupla M,Torres F,Villarroya F,Cihlar T,Domingo P

更新日期：2006-11-01 00:00:00