Effect of different lots of Mueller-Hinton agar on the interpretation of the gentamicin susceptibility of Pseudomonas aeruginosa.

Abstract:

:Population distributions and quality control data for strains of Pseudomonas aeruginosa tested for gentamicin susceptibility on six lots of Mueller-Hinton agar were analyzed. The lots of agar were used in three University of Washington hospitals from April 1975 through October 1977. The analyses indicated that the performance of members of the P. aeruginosa populations in each hospital closely followed the performance of the quality control strain, P. aeruginosa ATCC 27853, when tested on each lot of Mueller-Hinton medium. The variability of zone diameters with the P. aeruginosa populations and the quality control strain indicated that a fixed indeterminate range (13 to 16 mm) of gentamicin susceptibility was not applicable to these organisms as it was with the Enterobacteriaceae. Variability in gentamicin susceptibility results was demonstrated in both minimal inhibitory concentration and disk diffusion tests when eight selected P. aeruginosa strains and the quality control strain were tested on each lot of medium. This variation in susceptibility to gentamicin was not related to the total Ca(2+), Mg(2+), or Zn(2+) content of each lot of medium. The data demonstrated that a moving indeterminate range of gentamicin susceptibility, 3 to 6 mm below the mean zone diameter of the quality control strain, was a suitable criterion for strains tested on a single medium lot. These results illustrate the importance of defining stringent performance standards for media used in the susceptibility testing of P. aeruginosa with gentamicin and other aminoglycoside antibiotics.

authors

Pollock HM,Minshew BH,Kenny MA,Schoenknecht FD

doi

10.1128/aac.14.3.360

subject

Has Abstract

pub_date

1978-09-01 00:00:00

pages

360-7

issue

3

eissn

0066-4804

issn

1098-6596

journal_volume

14

pub_type

杂志文章
  • Antibiofilm Activity and Synergistic Inhibition of Staphylococcus aureus Biofilms by Bactericidal Protein P128 in Combination with Antibiotics.

    abstract::P128 is an antistaphylococcal protein, comprising a cell wall-degrading enzymatic region and a Staphylococcus-specific binding region, which possesses specific and potent bactericidal activity against sensitive and drug-resistant strains of Staphylococcus aureus To explore P128's ability to kill S. aureus in a range o...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01118-16

    authors: Nair S,Desai S,Poonacha N,Vipra A,Sharma U

    更新日期:2016-11-21 00:00:00

  • Clarithromycin in treatment of early Lyme disease: a pilot study.

    abstract::Forty-one patients with erythema migrans were enrolled in an open-labelled pilot study of oral clarithromycin, 500 mg twice daily for 21 days, for the treatment of early Lyme disease. Immediately posttherapy, pretreatment signs and symptoms resolved among 91% of the 33 evaluable patients. At 6 months, all 28 of the ev...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.40.2.468

    authors: Dattwyler RJ,Grunwaldt E,Luft BJ

    更新日期:1996-02-01 00:00:00

  • Purification and characterization of inducible beta-lactamases in Aeromonas spp.

    abstract::beta-Lactamases from Aeromonas hydrophila and A. sobria were purified and characterized. Both species produced beta-lactamases that were inducible by either cefoxitin or imipenem. These species were resistant to ampicillin and cephalothin but not imipenem. Isoelectric focusing of sonic extracts revealed one band at pI...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.34.1.44

    authors: Iaconis JP,Sanders CC

    更新日期:1990-01-01 00:00:00

  • Defective killing of enterococci: a common property of antimicrobial agents acting on the cell wall.

    abstract::We tested the ability of antimicrobial agents that act on the cell wall to kill enterococci and found defective killing (a minimal bactericidal concentration/minimal inhibitory concentration ratio of greater than or equal to 32) with both beta-lactams (penicillin G and cephalothin) and non-beta-lactams (vancomycin, cy...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.17.6.965

    authors: Krogstad DJ,Pargwette AR

    更新日期:1980-06-01 00:00:00

  • Aspergillus fumigatus Clinical Isolates Carrying CYP51A with TR34/L98H/S297T/F495I Substitutions Detected after Four-Year Retrospective Azole Resistance Screening in Brazil.

    abstract::Azole antifungal resistance in Aspergillus fumigatus is a worldwide concern. As in most public hospitals in Brazil, antifungal susceptibility tests are not routinely performed for filamentous fungi at our institution. A 4-year retrospective azole antifungal resistance screening revealed two azole-resistant A. fumigatu...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.02059-19

    authors: Pontes L,Beraquet CAG,Arai T,Pigolli GL,Lyra L,Watanabe A,Moretti ML,Schreiber AZ

    更新日期:2020-02-21 00:00:00

  • Mode of action of the biotin antimetabolites actithiazic acid and alpha-methyldethiobiotin.

    abstract::Actithiazic acid and alpha-methyldethiobiotin inhibited the conversion of dethiobiotin to biotin resting-cell suspensions of Escherichia coli. The concentrations which effected 50% inhibition were 0.45 and 1.1 microM for actithiazic acid and alpha-methyldethiobiotin, respectively. Cells grown in low concentrations of ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.21.1.5

    authors: Eisenberg MA,Hsiung SC

    更新日期:1982-01-01 00:00:00

  • Artemether-Lumefantrine Exposure in HIV-Infected Nigerian Subjects on Nevirapine-Containing Antiretroviral Therapy.

    abstract::Coadministration of nevirapine-based antiretroviral therapy (ART) and artemether-lumefantrine is reported to result in variable changes in lumefantrine exposure. We conducted an intensive pharmacokinetic study with 11 HIV-infected adults who were receiving artemether-lumefantrine plus nevirapine-based ART, and we comp...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01153-15

    authors: Parikh S,Fehintola F,Huang L,Olson A,Adedeji WA,Darin KM,Morse GD,Murphy RL,Taiwo BO,Akinyinka OO,Adewole IF,Aweeka FT,Scarsi KK

    更新日期:2015-12-01 00:00:00

  • In vitro activity of temocillin (BRL 17421), a novel beta-lactam antibiotic.

    abstract::The minimal inhibitory concentration of temocillin (BRL 17421) against 476 clinical isolates was determined by an agar dilution method. Temocillin was active against most of the Enterobacteriaceae, Haemophilus, and Neisseria strains tested. The compound showed low activity or was inactive against Bacteroides, Campylob...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.22.4.535

    authors: Van Landuyt HW,Pyckavet M,Lambert A,Boelaert J

    更新日期:1982-10-01 00:00:00

  • Prevention of brain injury by the nonbacteriolytic antibiotic daptomycin in experimental pneumococcal meningitis.

    abstract::Bacteriolytic antibiotics cause the release of bacterial components that augment the host inflammatory response, which in turn contributes to the pathophysiology of brain injury in bacterial meningitis. In the present study, antibiotic therapy with nonbacteriolytic daptomycin was compared with that of bacteriolytic ce...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01014-06

    authors: Grandgirard D,Schürch C,Cottagnoud P,Leib SL

    更新日期:2007-06-01 00:00:00

  • Clinical isolate of herpes simplex virus type 2 that induces a thymidine kinase with altered substrate specificity.

    abstract::In vitro and in vivo studies were done on a herpes simplex virus type 2 strain recovered from a patient on acyclovir (ACV) which was ACV resistant but expressed thymidine (dThd) kinase (EC 2.7.1.21) activity. Plaque-purified clones derived from the original clinical sample were heterogeneous with respect to plaque siz...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.31.7.1117

    authors: Ellis MN,Keller PM,Fyfe JA,Martin JL,Rooney JF,Straus SE,Lehrman SN,Barry DW

    更新日期:1987-07-01 00:00:00

  • Inducement and reversal of tetracycline resistance in Escherichia coli K-12 and expression of proton gradient-dependent multidrug efflux pump genes.

    abstract::Expression of eight transporter genes of Escherichia coli K-12 and its DeltaacrAB mutant prior to and after induction of both strains to tetracycline resistance and after reversal of induced resistance were analyzed by quantitative reverse transcriptase PCR. All transporter genes were overexpressed after induced resis...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.49.8.3578-3582.2005

    authors: Viveiros M,Jesus A,Brito M,Leandro C,Martins M,Ordway D,Molnar AM,Molnar J,Amaral L

    更新日期:2005-08-01 00:00:00

  • Influence of indomethacin on the intrarenal uptake of gentamicin in endotoxemic rats.

    abstract::Gentamicin is a commonly used antibiotic for the treatment of gram-negative-bacterial infections. Bacterial endotoxin is liberated during antibiotic therapy, and we have shown that endotoxemic animals accumulate more aminoglycosides in their renal parenchyma than normal animals. Vasoactive mediators, such as prostagla...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.33.8.1342

    authors: Bergeron MG,Bergeron Y,Tardif M,Marchand S,Beauchamp D

    更新日期:1989-08-01 00:00:00

  • Effect of Resistance Mechanisms on the Inoculum Effect of Carbapenem in Klebsiella pneumoniae Isolates with Borderline Carbapenem Resistance.

    abstract::We aimed to examine the effects of resistance mechanisms on several resistance phenotypes among carbapenem-resistant Klebsiella pneumoniae isolates with borderline carbapenem MICs. We compared carbapenemase-negative K. pneumoniae with carbapenemase-producing K. pneumoniae (CPKP) isolates with similar MICs. CPKP isolat...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.00533-15

    authors: Adler A,Ben-Dalak M,Chmelnitsky I,Carmeli Y

    更新日期:2015-08-01 00:00:00

  • Mannopeptimycins, new cyclic glycopeptide antibiotics produced by Streptomyces hygroscopicus LL-AC98: antibacterial and mechanistic activities.

    abstract::Mannopeptimycins alpha, beta, gamma, delta, and epsilon are new cyclic glycopeptide antibiotics produced by Streptomyces hygroscopicus LL-AC98. Mannopeptimycins gamma, delta, and epsilon, which have an isovaleryl substitution at various positions on the terminal mannose of the disaccharide moiety, demonstrated moderat...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.47.1.62-69.2003

    authors: Singh MP,Petersen PJ,Weiss WJ,Janso JE,Luckman SW,Lenoy EB,Bradford PA,Testa RT,Greenstein M

    更新日期:2003-01-01 00:00:00

  • UPC2A is required for high-level azole antifungal resistance in Candida glabrata.

    abstract::Candida glabrata, the second most common cause of Candida infections, is associated with high rates of mortality and often exhibits resistance to the azole class of antifungal agents. Upc2 and Ecm22 in Saccharomyces cerevisiae and Upc2 in Candida albicans are the transcriptional regulators of ERG11, the gene encoding ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.02217-13

    authors: Whaley SG,Caudle KE,Vermitsky JP,Chadwick SG,Toner G,Barker KS,Gygax SE,Rogers PD

    更新日期:2014-08-01 00:00:00

  • Mutations Associated with Decreased Susceptibility to Seven Antimicrobial Families in Field and Laboratory-Derived Mycoplasma bovis Strains.

    abstract::The molecular mechanisms of resistance to fluoroquinolones, tetracyclines, an aminocyclitol, macrolides, a lincosamide, a phenicol, and pleuromutilins were investigated in Mycoplasma bovis For the identification of mutations responsible for the high MICs of certain antibiotics, whole-genome sequencing of 35 M. bovis f...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01983-16

    authors: Sulyok KM,Kreizinger Z,Wehmann E,Lysnyansky I,Bányai K,Marton S,Jerzsele Á,Rónai Z,Turcsányi I,Makrai L,Jánosi S,Nagy SÁ,Gyuranecz M

    更新日期:2017-01-24 00:00:00

  • Acidometric agar plate method for ampicillin susceptibility testing of Haemophilus influenzae.

    abstract::The need for an accurate and rapid method of testing ampicillin susceptibility of Haemophilus influenzae, especially strains isolated from patients with meningitis and septicemia, is indisputable. Various methods have been employed for this purpose. Each has advantages and disadvantages. This report describes a modifi...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.13.2.318

    authors: Park CH,Lopez JS,Cook CB

    更新日期:1978-02-01 00:00:00

  • Inhibitors of reactive oxygen species accumulation delay and/or reduce the lethality of several antistaphylococcal agents.

    abstract::Perturbation of hydroxyl radical accumulation by subinhibitory concentrations of 2,2'-bipyridyl plus thiourea protects Escherichia coli from being killed by 3 lethal antimicrobial classes. Here, we show that 2,2'-bipyridyl plus thiourea delays and/or reduces antimicrobial killing of Staphylococcus aureus by daptomycin...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.00754-12

    authors: Liu Y,Liu X,Qu Y,Wang X,Li L,Zhao X

    更新日期:2012-11-01 00:00:00

  • Mosaic penicillin-binding protein 2 in Neisseria gonorrhoeae isolates collected in 2008 in San Francisco, California.

    abstract::Using a real-time PCR assay specific for a mosaic penA allele that has been associated with oral cephalosporin resistance in Asia, 54 available Neisseria gonorrhoeae isolates collected in San Francisco, CA, from January to October 2008 were analyzed. Five isolates tested positive for the mosaic penA gene by real-time ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.00406-09

    authors: Pandori M,Barry PM,Wu A,Ren A,Whittington WL,Liska S,Klausner JD

    更新日期:2009-09-01 00:00:00

  • In vitro activity of ampicillin or vancomycin combined with gentamicin or streptomycin against enterococci.

    abstract::Minimum inhibitory and bactericidal concentrations of four antibiotics and their combinations were determined for 38 strains of enterococci by a microtitration tube dilution technique. The drugs were ampicillin, vancomycin, gentamicin, and streptomycin; the combinations were ampicillin-gentamicin, ampicillin-streptomy...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.4.4.383

    authors: Harwick HJ,Kalmanson GM,Guze LB

    更新日期:1973-10-01 00:00:00

  • Plasmid-determined resistance to boron and chromium compounds in Pseudomonas aeruginosa.

    abstract::Plasmids determining resistance to arsenic, mercury, silver, and tellurium compounds in Escherichia coli and Pseudomonas aeruginosa were tested for resistance to 40 other metal compounds. Resistance to trivalent boron and hexavalent chromium compounds was a property of certain P. aeruginosa plasmids. ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.13.4.637

    authors: Summers AO,Jacoby GA

    更新日期:1978-04-01 00:00:00

  • Incidence of class 1 and 2 integrases in clinical and commensal bacteria from livestock, companion animals, and exotics.

    abstract::Many pathogenic and commensal organisms are multidrug resistant due to exposure to various antibiotics. Often, this antimicrobial resistance is encoded by integrons that occur on plasmids or that are integrated into the bacterial chromosome. Integrons are commonly associated with bacterial genera in the family Enterob...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.45.3.723-726.2001

    authors: Goldstein C,Lee MD,Sanchez S,Hudson C,Phillips B,Register B,Grady M,Liebert C,Summers AO,White DG,Maurer JJ

    更新日期:2001-03-01 00:00:00

  • Enzymatic modification of aminoglycoside antibiotics: a new 3-N-acetylating enzyme from a Pseudomonas aeruginosa isolate.

    abstract::A new 3-N-aminoglycoside acetyltransferase is described, which possesses a wider substrate range than any such enzyme so far discovered in clinical isolates of antibiotic-resistant bacteria. ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.9.6.951

    authors: Biddlecome S,Haas M,Davies J,Miller GH,Rane DF,Daniels PJ

    更新日期:1976-06-01 00:00:00

  • Anti-Trypanosoma cruzi activity of green tea (Camellia sinensis) catechins.

    abstract::The trypanocidal action of green tea catechins against two different developmental stages of Trypanosoma cruzi is reported for the first time. This activity was assayed with the nonproliferative bloodstream trypomastigote and with the intracellular replicative amastigote parasite forms. An ethyl acetate fraction from ...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.48.1.69-74.2004

    authors: Paveto C,Güida MC,Esteva MI,Martino V,Coussio J,Flawiá MM,Torres HN

    更新日期:2004-01-01 00:00:00

  • Penetration of aztreonam into human bronchial secretions.

    abstract::Nine intubated patients were given a single, 2-g intravenous dose of aztreonam over 5 min. Samples of serum and bronchial secretion were obtained 2, 4, and 8 h after administration and assayed for aztreonam content. The mean concentrations in bronchial secretion ranged from 1.9 to 5.2 micrograms/ml and tended to be hi...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.27.2.263

    authors: Bechard DL,Hawkins SS,Dhruv R,Friedhoff LT

    更新日期:1985-02-01 00:00:00

  • Efficacy of a doxycycline treatment regimen initiated during three different phases of experimental ehrlichiosis.

    abstract::Doxycycline is the treatment of choice for canine monocytic ehrlichiosis (CME), a well-characterized disease and valuable model for tick-borne zoonoses. Conflicting reports of clearance of Ehrlichia canis after treatment with doxycycline suggested that the disease phase during which treatment is initiated influences o...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/AAC.01622-09

    authors: McClure JC,Crothers ML,Schaefer JJ,Stanley PD,Needham GR,Ewing SA,Stich RW

    更新日期:2010-12-01 00:00:00

  • In vitro activity of CP-65,207, a new penem antimicrobial agent, in comparison with those of other agents.

    abstract::CP-65,207 is a new parenteral penem antibiotic with a broad spectrum that includes gram-positive, gram-negative, and anaerobic microorganisms, with MICs for 90% (MIC90s) of the majority of 1,101 clinical pathogens tested being less than or equal to 1 microgram/ml. The compound was from 10- to 100-fold more active than...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.33.8.1160

    authors: Gootz T,Retsema J,Girard A,Hamanaka E,Anderson M,Sokolowski S

    更新日期:1989-08-01 00:00:00

  • Regulation of cephamycin C synthesis, aspartokinase, dihydrodipicolinic acid synthetase, and homoserine dehydrogenase by aspartic acid family amino acids in Streptomyces clavuligerus.

    abstract::The effect of the cephalosporin precursors and amino acids of the aspartic acid family on antibiotic production by Streptomyces clavuligerus was investigated DL-meso-Diaminopimelate and L-lysine each stimulated specific antibiotic production by 75%. A fourfold increase in specific production was obtained by simultaneo...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.21.1.74

    authors: Mendelovitz S,Aharonowitz Y

    更新日期:1982-01-01 00:00:00

  • In vitro activities of the glycylcycline GAR-936 against gram-positive bacteria.

    abstract::The in vitro activities of GAR-936, the 9-t-butylglycylamido derivative of minocycline, were compared with those of doxycycline, minocycline, and tetracycline against 527 gram-positive clinical isolates. GAR-936 inhibited all strains, including those resistant to other tetracyclines, at concentrations of

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.44.8.2225-2229.2000

    authors: Boucher HW,Wennersten CB,Eliopoulos GM

    更新日期:2000-08-01 00:00:00

  • The rpoB gene of Mycobacterium tuberculosis.

    abstract::A portion of the Mycobacterium tuberculosis gene encoding the beta subunit of RNA polymerase (rpoB) was amplified by PCR using degenerate oligonucleotides and used as a hybridization probe to isolate plasmid clones carrying the entire rpoB gene of M. tuberculosis H37Rv, a virulent, rifampin-susceptible strain. Sequenc...

    journal_title:Antimicrobial agents and chemotherapy

    pub_type: 杂志文章

    doi:10.1128/aac.38.4.805

    authors: Miller LP,Crawford JT,Shinnick TM

    更新日期:1994-04-01 00:00:00