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  3. Antimicrobial activity of ceftolozane-tazobactam against Enterobacterales and Pseudomonas aeruginosa recovered during the Study for Monitoring Antimicrobial Resistance Trends (SMART) program in Spain (2016-2018)

Antimicrobial activity of ceftolozane-tazobactam against Enterobacterales and Pseudomonas aeruginosa recovered during the Study for Monitoring Antimicrobial Resistance Trends (SMART) program in Spain (2016-2018)

Fecha de publicación:

Autores de IIS La Fe

Participantes ajenos a IIS La Fe

  • Canton, R
  • Loza, E
  • Arcay, RM
  • Cercenado, E
  • Castillo, FJ
  • Cisterna, R
  • Galvez-Benitez, L
  • Romo, FG
  • Rodriguez-Lozano, J
  • Suarez-Barrenechea, AI
  • Tubau, F
  • Diaz-Reganon, J
  • Lopez-Mendoza, D

Abstract

Objective. To analyse the susceptibility to ceftolozane-tazobactam and comparators in Enterobacterales and Pseudomonas aeruginosa isolates recovered from intraabdominal (IAI), urinary (UTI), respiratory (RTI) and bloodstream infection (BSI) in the SMART (Study for Monitoring Antimicrobial Resistance Trends) study. Methods. The susceptibility of 5,351 isolates collected in 11 Spanish hospitals (2016-2018) were analysed (EUCAST-2020 criteria) by broth microdilution and were phenotypically studied for the presence of extended-spectrum beta-lactamases (ESBL). Ceftolozane-tazobactam and/or carbapenem resistant isolates were genetically characterized for ESBL and carbapenemases. Results. Escherichia coli was the most frequent pathogen (49.3% IAI, 54.9% UTI, 16.7% RTI and 50% BSI), followed by Klebsiella pneumoniae (11.9%, 19.1%, 13.1% and 15.4%, respectively). P. aeruginosa was isolated in 9.3%, 5.6%, 32% and 9%, respectively. The frequency of isolates with ESBLs (2016-2017) was: 30.5% K. pneumoniae, 8.6% E. coli, 2.3% Klebsiella oxytoca and 0.7% Proteus mirabilis. Ceftolozane-tazobactam was very active against non-ESBL-(99.3% susceptible) and ESBL-(95.2%) producing E. coli being less active against K. pneumoniae (98% and 43.1%, respectively) isolates. CTX-M-15 was the most prevalent ESBL in E. coli (27.5%) and K. pneumoniae (51.9%) frequently associated with OXA-48-like carbapenemase. Overall, 93% of P. aeruginosa isolates were susceptible to ceftolozane-tazobactam, preserving this activity (>75%) in isolates resistant to other beta-lactams except in those resistant to meropenen or ceftazidime-avibactam. GES-5, PER-1, VIM-1/2 were the most prevalent enzymes in isolates resistant to ceftolozane-tazobactam. Conclusions. Ceftolozane-tazobactam showed high activity rates against isolates recovered in the SMART study although it was affected in K. pneumoniae and P. aeruginosa isolates with ESBL and/or carbapenemases.

Datos de la publicación

ISSN/ISSNe:
0214-3429, 1988-9518

REVISTA ESPANOLA DE QUIMIOTERAPIA  SOCIEDAD ESPANOLA QUIMIOTERAPIA

Tipo:
Article
Páginas:
228-237
PubMed:
33645948
Factor de Impacto:
0,440 SCImago ℠
Cuartil:
Q3 SCImago ℠

Citas Recibidas en Web of Science: 10

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Keywords

  • Ceftolozane-tazobactam; Enterobacterales; Pseudomonas aeru-ginosa; surveillance study

Campos de Estudio

Proyectos y Estudios Clínicos

Diagnóstico no invasivo de infección respiratoria mediante la detección de compuestos orgánicos volátiles en aire exhaladao.

Investigador Principal: AMPARO SOLÉ JOVER

PI17/01098 . INSTITUTO DE SALUD CARLOS III . 2018

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