Browsing by Author "Martínez Martínez, Luis"
Now showing items 1-20 of 31
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Article
A multinational, preregistered cohort study of β-lactam/β-lactamase inhibitor combinations for treatment of bloodstream infections due to extended-spectrum-β-lactamase-producing enterobacteriaceae
(American Society for Microbiology, 2016-07-01)The spread of extended-spectrum-β-lactamase (ESBL)-producing Enterobacteriaceae (ESBL-E) is leading to increased carbapenem ...
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Article
Activities of ABT-773 against Listeria monocytogenes and coryneform bacteria of clinical interest
(American Society for Microbiology, 2003-04-01)The in vitro activities of ABT-773 were evaluated against 15 Listeria monocytogenes strains and 196 coryneform bacteria ...
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Article
Activities of gemifloxacin and five other antimicrobial agents against Listeria monocytogenes and coryneform bacteria isolated from clinical samples
(American Society for Microbiology, 2001-07-31)The in vitro activities of gemifloxacin, ciprofloxacin, ampicillin, doxycycline, gentamicin, and vancomycin were evaluated ...
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Article
Activities of imipenem and cephalosporins against clonally related strains of Escherichia coli hyperproducing chromosomal β-lactamase and showing altered porin profiles
(American Society for Microbiology, 2000-09-06)Forty clonally related clinical isolates of Escherichia coli from hospitalized patients were resistant to cefoxitin (MICs, ...
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Article
Antimicrobial susceptibility pattern of Corynebacterium striatum
(American Society for Microbiology, 1996-11-01)The in vitro activities of 16 antimicrobial agents against 86 strains of Corynebacterium striatum were evaluated by ...
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PhD Thesis
Betalactamasas de espectro extendido en enterobacterias aisladas de muestras clínicas de hospitales españoles
(2007-02-06)En 1985, se describió la primera betalactamasa de espectro extendido (BLEE). En España la primera BLEE fue descrita en ...
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Article
Comparison of broth microdilution and E-test for susceptibility testing of Neisseria meningitidis
(American Society for Microbiology, 1996)The susceptibilities of 54 clinical isolates of Neisseria meningitidis to penicillin, cefotaxime, ceftriaxone, cefepime, ...
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Article
Comparison of E-test with broth microdilution and disk diffusion for susceptibility testing of coryneform bacteria
(American Society for Microbiology, 1995)The susceptibilities of 135 coryneform bacteria isolated from clinical samples to ampicillin (AMP), cephalothin (CR), ...
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Article
Detection of plasmid-mediated quinolone resistance genes in clinical isolates of Enterobacter spp. in Spain
(American Society for Microbiology, 2009)We have studied by PCR and DNA sequencing the presence of the qnrA, qnrB, qnrS, aac(6′)-Ib-cr, qepA, intI1, and ISCR1 genes ...
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Article
Development of resistance during antimicrobial therapy caused by insertion sequence interruption of porin genes
(American Society for Microbiology, 1999-01-01)We have demonstrated by using an in vitro approach that interruption of the OmpK36 porin gene by insertion sequences (ISs) ...
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Article
Efficacy of cefepime and imipenem in experimental murine pneumonia caused by porin-deficient Klebsiella pneumoniae producing CMY-2 β-lactamase
(American Society for Microbiology, 2005-08-01)Previous studies have shown decreased in vitro activity of zwitterionic cephalosporins and carbapenems against porin-deficient ...
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Article
Energy-dependent accumulation of fluoroquinolones in quinolone- resistant Klebsiella pneumoniae strains
(American Society for Microbiology, 1998-07-01)The intracellular accumulation of norfloxacin and perloxacin in Klebsiella pneumoniae was evaluated. The roles of ...
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Article
Energy-dependent accumulation of norfloxacin and porin expression in clinical isolates of Klebsiella pneumoniae and relationship to extended-spectrum β-lactamase production
(American Society for Microbiology, 2002-12-01)The relationships between porin deficiency, active efflux of fluoroquinolones, and extended-spectrum β-lactamase (ESBL) ...
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Article
Evaluation of three automated systems for susceptibility testing of enterobacteria containing qnrB, qnrS, and/or aac(6′)-Ib-cr
(American Society for Microbiology, 2011)The accuracy of the MicroScan WalkAway, BD Phoenix, and Vitek-2 systems for susceptibility testing of quinolones and ...
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Article
Identification and characterization of a new porin gene of Klebsiella pneumoniae: Its role in β-lactam antibiotic resistance
(American Society for Microbiology, 1999)Klebsiella pneumoniae porin genes were analyzed to detect mutations accounting for the porin deficiency observed in many ...
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Article
In vitro activities of ketolide HMR 3647, macrolides, and clindamycin against coryneform bacteria
(American Society for Microbiology, 1998-12-01)The in vitro activity of ketolide HMR 3647 against coryneform bacteria isolated from clinical samples was evaluated. Except ...
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Article
In vivo selection of porin-deficient mutants of Klebsiella pneumoniae with increased resistance to cefoxitin and expanded-spectrum cephalosporins
(American Society for Microbiology, 1996-02-01)Four Klebsiella pneumoniae isolates (LB1, LB2, LB3, and LB4) with increased antimicrobial resistance were obtained from ...
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Article
Inhibitor-resistant TEM- And OXA-1-producing Escherichia coli isolates resistant to amoxicillin-clavulanate are more clonal and possess lower virulence gene content than susceptible clinical isolates
(American Society for Microbiology, 2014-01-01)In a previous prospective multicenter study in Spain, we found that OXA-1 and inhibitor-resistant TEM (IRT) β-lactamases ...
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PhD Thesis
Mecanismos de resistencia a Carbapenemas en cepas clínicas de Acinetobacter baumannii
(2001-04-25)En los últimos años se ha producido un incremento significativo en el número de infecciones nosocomiales causadas por cepas ...
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Article
Mobile genetic elements related to the diffusion of plasmid-mediated AmpC β-lactamases or carbapenemases from enterobacteriaceae: Findings from a multicenter study in Spain
(American Society for Microbiology, 2015-09-01)We examined the genetic context of 74 acquired ampC genes and 17 carbapenemase genes from 85 of 640 Enterobacteriaceae ...