Stepwise acquisition of multiple drug resistance by beta-hemolytic streptococci and difference in resistance pattern by type.

abstract：:The susceptibilities of 87 periodontitis-associated strains of Actinobacillus actinomycetemcomitans to clarithromycin and erythromycin were determined by standard methodology recommended for Haemophilus influenzae. For clarithromycin the MIC at which 90% of the isolates were inhibited was

journal_title：Antimicrobial agents and chemotherapy

authors： Piccolomini R,Catamo G,Di Bonaventura G

更新日期：1998-11-01 00:00:00

abstract：:The multiple antibiotic resistance (mar) locus in Escherichia coli consists of two divergently expressed operons (marC and marRAB), both of which contribute to the Mar phenotype. Overexpression of the marRAB operon protected E. coli against rapid cell killing by fluoroquinolones. Inactivation of the operon in mar muta...

journal_title：Antimicrobial agents and chemotherapy

authors： Goldman JD,White DG,Levy SB

更新日期：1996-05-01 00:00:00

abstract：:The hyl(Efm) gene (encoding a putative hyaluronidase) has been found almost exclusively in Enterococcus faecium clinical isolates, and recently, it was shown to be on a plasmid which increased the ability of E. faecium strains to colonize the gastrointestinal tract. In this work, the results of mating experiments betw...

journal_title：Antimicrobial agents and chemotherapy

authors： Arias CA,Panesso D,Singh KV,Rice LB,Murray BE

更新日期：2009-10-01 00:00:00

abstract：:Pharmacokinetic parameters were calculated from intravenous data based upon a two-compartment open model. These parameters were subsequently used to determine the absorption rates and bioavailability of cephradine administered intramuscularly and orally. The results indicate that cephradine obeys dose-independent kine...

journal_title：Antimicrobial agents and chemotherapy

authors： Rattie ES,Bernardo PD,Ravin JJ

更新日期：1976-08-01 00:00:00

abstract：:The activity of cinoxacin, a synthetic organic acid antimicrobial agent, was studied and found to have in vitro activity similar to that previously reported for nalidixic acid. ...

journal_title：Antimicrobial agents and chemotherapy

authors： Kurtz S,Turck M

更新日期：1975-03-01 00:00:00

abstract：:The in vitro activity of gentamicin was compared with its therapeutic efficacy in rabbits with Streptococcus faecalis endocarditis. The test strain was resistant to gentamicin as measured by MICs and MBCs determined in Mueller-Hinton broth alone or in broth supplemented with 50% rabbit serum. Gentamicin also failed to...

journal_title：Antimicrobial agents and chemotherapy

authors： Sullam PM,Täuber MG,Hackbarth CJ,Sande MA

更新日期：1985-02-01 00:00:00

abstract：:Treating high-density bacterial infections is a challenging clinical problem. We have a paucity of new agents that can address this problem. Pseudomonas aeruginosa is a particularly difficult pathogen to treat effectively because of the plethora of resistance mechanisms it carries. Fosfomycin is an agent discovered ci...

journal_title：Antimicrobial agents and chemotherapy

authors： Drusano GL,Neely MN,Yamada WM,Duncanson B,Brown D,Maynard M,Vicchiarelli M,Louie A

更新日期：2018-11-26 00:00:00

abstract：:The influence of five antibiotics (netilmicin, ceftriaxone, cefepime, fleroxacin, and ciprofloxacin) on capsular polysaccharide distribution and on opsonophagocytosis by human polymorphonuclear leukocytes of unencapsulated and encapsulated Escherichia coli strains was studied. Unencapsulated E. coli strains were readi...

journal_title：Antimicrobial agents and chemotherapy

authors： Raponi G,Keller N,Overbeek BP,Rozenberg-Arska M,van Kessel KP,Verhoef J

更新日期：1990-02-01 00:00:00

abstract：:An agar dilution method was employed to test the susceptibility of 12 strains of Coccidioides immitis to polymyxin B (PB). After 3 days of incubation, eight strains were markedly inhibited by 5.0 mug of PB per ml and four strains did not grow. PB at 10 mug/ml inhibited the growth of all strains through 20 days of incu...

journal_title：Antimicrobial agents and chemotherapy

authors： Collins MS,Pappagianis D

更新日期：1976-08-01 00:00:00

abstract：:Extended-spectrum class C β-lactamases have evolved to rapidly inactivate expanded-spectrum cephalosporins, a class of antibiotics designed to be resistant to hydrolysis by β-lactamase enzymes. To better understand the mechanism by which Acinetobacter-derived cephalosporinase-7 (ADC-7), a chromosomal AmpC enzyme, hydr...

journal_title：Antimicrobial agents and chemotherapy

authors： Curtis BN,Smolen KA,Barlow SJ,Caselli E,Prati F,Taracila MA,Bonomo RA,Wallar BJ,Powers RA

更新日期：2020-11-17 00:00:00

abstract：:A new procedure for determining the susceptibility of Treponema pallidum subsp. pallidum to antimicrobial agents was developed, utilizing a tissue culture system which promotes the in vitro multiplication of this organism. In the absence of antibiotics, T. pallidum (Nichols virulent strain) multiplied an average of 10...

journal_title：Antimicrobial agents and chemotherapy

authors： Norris SJ,Edmondson DG

更新日期：1988-01-01 00:00:00

abstract：:A single point mutation in the 23S rRNA gene of Helicobacter pylori is known to confer resistance to clarithromycin. Most prevalent among clarithromycin-resistant clinical H. pylori isolates are the mutations from A-2142 to G and A-2143 to G in the 23S rRNA gene. The bias in the 23S rRNA gene mutations conferring clar...

journal_title：Antimicrobial agents and chemotherapy

authors： Debets-Ossenkopp YJ,Brinkman AB,Kuipers EJ,Vandenbroucke-Grauls CM,Kusters JG

更新日期：1998-10-01 00:00:00

abstract：:Persistent infections with Chlamydia pneumoniae have been implicated in the development of chronic diseases, such as atherosclerosis and asthma. Although azithromycin, clarithromycin, and levofloxacin are frequently used for the treatment of respiratory C. pneumoniae infections, little is known about the dose and dura...

journal_title：Antimicrobial agents and chemotherapy

authors： Kutlin A,Roblin PM,Hammerschlag MR

更新日期：2002-02-01 00:00:00

abstract：:The efficacies of pefloxacin, fosfomycin, and both of these agents in combination against methicillin-resistant Staphylococcus aureus were assessed in a rat endocarditis model. The combination prevented emergence of the fosfomycin and pefloxacin resistance seen in 36 and 4%, respectively, of animals receiving either a...

journal_title：Antimicrobial agents and chemotherapy

authors： Thauvin C,Lemeland JF,Humbert G,Fillastre JP

更新日期：1988-06-01 00:00:00

abstract：:Heat shock protein 90 (Hsp90) is an essential chaperone involved in the fungal stress response that can be harnessed as a novel antifungal target for the treatment of invasive aspergillosis. We previously showed that genetic repression of Hsp90 reduced Aspergillus fumigatus virulence and potentiated the effect of the ...

journal_title：Antimicrobial agents and chemotherapy

authors： Lamoth F,Juvvadi PR,Soderblom EJ,Moseley MA,Asfaw YG,Steinbach WJ

更新日期：2014-01-01 00:00:00

abstract：:Escherichia coli MRE 600 is a colicinogenic bacterium. Its colicinogenic activity may be ascribed mostly to colicin E1, although it produces a small amount of another, as yet unidentified, colicin. ...

journal_title：Antimicrobial agents and chemotherapy

authors： Salaj-Smic E

更新日期：1978-11-01 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：:Kinetic data on potassium release from and killing of Candida albicans by the four polyene antibiotics amphotericin B, amphotericin B methyl ester hydrochloride, nystatin, and nystatin methyl ester hydrochloride are presented. The nystatins were relatively more effective than the amphotericins in causing potassium rel...

journal_title：Antimicrobial agents and chemotherapy

authors： Chen WC,Chou DL,Feingold DS

更新日期：1978-06-01 00:00:00

abstract：:During HIV-1 reverse transcription, there are increasing opportunities for nucleos(t)ide (NRTI) or nonnucleoside (NNRTI) reverse transcriptase (RT) inhibitors to stop elongation of the nascent viral DNA (vDNA). In addition, RT inhibitors appear to influence the kinetics of vDNA synthesis differently. While cell-free k...

journal_title：Antimicrobial agents and chemotherapy

authors： Abram ME,Tsiang M,White KL,Callebaut C,Miller MD

更新日期：2015-02-01 00:00:00

abstract：:Cefamandole nafate, a new cephalosporin for parenteral use, was evaluated in vitro against 231 recent clinical isolates and in 12 patients. Cefamandole had activity equivalent to cefazolin against Staphylococcus aureus, Escherichia coli, and Klebsiella pneumoniae. Cefamandole was more active than cephalothin or cefazo...

journal_title：Antimicrobial agents and chemotherapy

authors： Shemonsky NK,Carrizosa J,Levison ME

更新日期：1975-12-01 00:00:00

abstract：:The objective of these studies was to evaluate the exposures of meropenem and vaborbactam that would produce antibacterial activity and prevent resistance development in carbapenem-resistant Klebsiella pneumoniae carbapenemase (KPC)-producing Enterobacteriaceae strains when tested at an inoculum of 108 CFU/ml. Thirtee...

journal_title：Antimicrobial agents and chemotherapy

authors： Sabet M,Tarazi Z,Rubio-Aparicio D,Nolan TG,Parkinson J,Lomovskaya O,Dudley MN,Griffith DC

更新日期：2018-01-25 00:00:00

abstract：:During investigation of susceptibility testing methods for polymyxins, 24 multidrug-resistant clinical isolates of Pseudomonas aeruginosa were observed to have a distinct, reproducible phenotype in which skipped wells were observed during broth microdilution testing for polymyxin B. Possible mechanisms underlying this...

journal_title：Antimicrobial agents and chemotherapy

authors： Schurek KN,Sampaio JL,Kiffer CR,Sinto S,Mendes CM,Hancock RE

更新日期：2009-10-01 00:00:00

abstract：:The pyrazinamide (PZA) analog 5-chloropyrazinamide (5-Cl PZA) is active against mycobacterial species, including PZA-resistant strains of Mycobacterium tuberculosis. In M. smegmatis, overexpression of the type 1 fatty acid synthase (FAS I) confers resistance to 5-Cl PZA, a potent FAS I inhibitor. Since M. tuberculosis...

journal_title：Antimicrobial agents and chemotherapy

authors： Baughn AD,Deng J,Vilchèze C,Riestra A,Welch JT,Jacobs WR Jr,Zimhony O

更新日期：2010-12-01 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：:The basis of bactericidal versus bacteriostatic action of antibiotics and the mechanism of bacterial cell death are largely unknown. Related to this important issue is the essential invulnerability to killing of persisters: cells forming a small subpopulation largely responsible for the recalcitrance of biofilms to ch...

journal_title：Antimicrobial agents and chemotherapy

authors： Kaldalu N,Mei R,Lewis K

更新日期：2004-03-01 00:00:00

abstract：:Analysis of the transport functions of individual Candida albicans plasma membrane drug efflux pumps is hampered by the multitude of endogenous transporters. We have stably expressed C. albicans Cdr1p, the major pump implicated in multiple-drug-resistance phenotypes, from the genomic PDR5 locus in a Saccharomyces cere...

journal_title：Antimicrobial agents and chemotherapy

authors： Nakamura K,Niimi M,Niimi K,Holmes AR,Yates JE,Decottignies A,Monk BC,Goffeau A,Cannon RD

更新日期：2001-12-01 00:00:00

abstract：:Genes belonging to different erm DNA hybridization classes were selectively amplified by polymerase chain reaction with a pair of oligonucleotides that corresponded to conserved amino acid motifs in known ERM methylases. Identification of the resistance mechanism was possible despite substantial nucleotide sequence di...

journal_title：Antimicrobial agents and chemotherapy

authors： Arthur M,Molinas C,Mabilat C,Courvalin P

更新日期：1990-10-01 00:00:00

abstract：:Fecal samples from Illinois farm animals and Montana range cattle were examined for the frequency of gram-negative enteric organisms resistant to oxytetracycline, dihydrostreptomycin, or ampicillin. The Illinois farm animals were continually fed rations containing various antibacterial drugs. The Montana range cattle ...

journal_title：Antimicrobial agents and chemotherapy

authors： Siegel D,Huber WG,Enloe F

更新日期：1974-12-01 00:00:00

abstract：:The resistome of P. aeruginosa for three β-lactam antibiotics, namely, ceftazidime, imipenem, and meropenem, was deciphered by screening a comprehensive PA14 mutant library for mutants with increased or reduced susceptibility to these antimicrobials. Confirmation of the phenotypes of all selected mutants was performed...

journal_title：Antimicrobial agents and chemotherapy

authors： Alvarez-Ortega C,Wiegand I,Olivares J,Hancock RE,Martínez JL

更新日期：2010-10-01 00:00:00

abstract：:Sterol delta22-desaturase has been purified from a strain of Candida glabrata with a disruption in the gene encoding sterol 14alpha-demethylase (cytochrome P-45051; CYP51). The purified cytochrome P-450 exhibited sterol delta22-desaturase activity in a reconstituted system with NADPH-cytochrome P-450 reductase in dila...

journal_title：Antimicrobial agents and chemotherapy

authors： Lamb DC,Maspahy S,Kelly DE,Manning NJ,Geber A,Bennett JE,Kelly SL

更新日期：1999-07-01 00:00:00