ArticleAntimicrobial agents and chemotherapy2013
Antimicrobial activity of ceftolozane-tazobactam tested against Enterobacteriaceae and Pseudomonas aeruginosa with various resistance patterns isolated in U.S. Hospitals (2011-2012).
Article in Antimicrobial agents and chemotherapy, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 92 papers, 2 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
92 citing papers in PubMed, 2 syntheses or guidelines pooled it, 202 citations in OpenAlex.
- Prevalence of colistin resistance in clinical isolates ofFrontiers in microbiology · 2024Pooled it
- Empiric therapy for hospital-acquired, Gram-negative complicated intra-abdominal infection and complicated urinary tract infections: a systematic literature review of current and emerging treatment options.BMC infectious diseases · 2015Pooled it
- Characteristics and Outcomes of Complicated Intra-abdominal Infections Involving Pseudomonas aeruginosa from a Randomized, Double-Blind, Phase 3 Ceftolozane-Tazobactam Study.Antimicrobial agents and chemotherapy · 2016Trial
- Ceftolozane/Tazobactam Plus Metronidazole for Complicated Intra-abdominal Infections in an Era of Multidrug Resistance: Results From a Randomized, Double-Blind, Phase 3 Trial (ASPECT-cIAI).Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2015Trial
- Population pharmacokinetics of ceftolozane/tazobactam in healthy volunteers, subjects with varying degrees of renal function and patients with bacterial infections.Journal of clinical pharmacology · 2015Trial
- Multicenter, double-blind, randomized, phase II trial to assess the safety and efficacy of ceftolozane-tazobactam plus metronidazole compared with meropenem in adult patients with complicated intra-abdominal infections.Antimicrobial agents and chemotherapy · 2014Trial
- L-type pyocins inhibit the BAM complex to kill without cell entry.Nature communications · 2026Article
- Effectiveness of imipenem-relebactam for multidrug-resistantAntimicrobial agents and chemotherapy · 2025Observational
- Clinical efficacy, safety and pharmacokinetics of novel β-lactam/β-lactamase inhibitor combinations: a systematic review.JAC-antimicrobial resistance · 2025Review
- Ceftolozane/tazobactam disrupts Pseudomonas aeruginosa biofilms under static and dynamic conditions.The Journal of antimicrobial chemotherapy · 2025Article
- Article
- Revitalizing cephalosporins: The promise of β-lactamase inhibitor combinations.GMS hygiene and infection control · 2025Article
- Rationale and Logistics of Continuous Infusion Cephalosporin Antibiotics.Pharmacy (Basel, Switzerland) · 2024Review
- Ceftolozane/Tazobactam for the Treatment of Complicated Infections in Hospital Settings-A French Real-world Study.Open forum infectious diseases · 2024Article
- Age of Antibiotic Resistance in MDR/XDR Clinical Pathogen ofPharmaceuticals (Basel, Switzerland) · 2023Review
- An Overview of Antimicrobial Resistance in Saudi Arabia (2013-2023) and the Need for National Surveillance.Microorganisms · 2023Review
- Bloodstream Infection and Gram-Negative Resistance: The Role for Newer Antibiotics.Antibiotics (Basel, Switzerland) · 2023Review
- In Vitro Activity of Ceftolozane-Tazobactam againstAntibiotics (Basel, Switzerland) · 2023Article
- Risk factors and outcomes of inpatients with carbapenem-resistantFrontiers in microbiology · 2023Article
- Epidemiology, Mechanisms of Resistance and Treatment Algorithm for Infections Due to Carbapenem-Resistant Gram-Negative Bacteria: An Expert Panel Opinion.Antibiotics (Basel, Switzerland) · 2022Review
32 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Ceftolozane/tazobactam, a novel antimicrobial agent with activity against Pseudomonas aeruginosa (including drug-resistant strains) and other common Gram-negative pathogens (including most extended-spectrum-β-lactamase [ESBL]-producing Enterobacteriaceae strains), and comparator agents were susceptibility tested by a reference broth microdilution method against 7,071 Enterobacteriaceae and 1,971 P. aeruginosa isolates. Isolates were collected consecutively from patients in 32 medical centers across the United States during 2011 to 2012. Overall, 15.7% and 8.9% of P. aeruginosa isolates were classified as multidrug resistant (MDR) and extensively drug resistant (XDR), and 8.4% and 1.2% of Enterobacteriaceae were classified as MDR and XDR. No pandrug-resistant (PDR) Enterobacteriaceae isolates and only one PDR P. aeruginosa isolate were detected. Ceftolozane/tazobactam was the most potent (MIC50/90, 0.5/2 μg/ml) agent tested against P. aeruginosa and demonstrated good activity against 310 MDR strains (MIC50/90, 2/8 μg/ml) and 175 XDR strains (MIC50/90, 4/16 μg/ml). Ceftolozane/tazobactam exhibited high overall activity (MIC50/90, 0.25/1 μg/ml) against Enterobacteriaceae and retained activity (MIC50/90, 4/>32 μg/ml) against many 601 MDR strains but not against the 86 XDR strains (MIC50, >32 μg/ml). Ceftolozane/tazobactam was highly potent (MIC50/90, 0.25/0.5 μg/ml) against 2,691 Escherichia coli isolates and retained good activity against most ESBL-phenotype E. coli isolates (MIC50/90, 0.5/4 μg/ml), but activity was low against ESBL-phenotype Klebsiella pneumoniae isolates (MIC50/90, 32/>32 μg/ml), explained by the high rate (39.8%) of meropenem coresistance observed in this species phenotype. In summary, ceftolozane/tazobactam demonstrated high potency and broad-spectrum activity against many contemporary Enterobacteriaceae and P. aeruginosa isolates collected in U.S. medical centers. Importantly, ceftolozane/tazobactam retained potency against many MDR and XDR strains.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.