ArticleAntimicrobial agents and chemotherapy2014
Evaluation of vancomycin in combination with piperacillin-tazobactam or oxacillin against clinical methicillin-resistant Staphylococcus aureus Isolates and vancomycin-intermediate S. aureus isolates in vitro.
Article in Antimicrobial agents and chemotherapy, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.
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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.
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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
19 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.
- Adjuvant β-Lactam Therapy Combined with Vancomycin or Daptomycin for Methicillin-Resistant Staphylococcus aureus Bacteremia: a Systematic Review and Meta-analysis.Antimicrobial agents and chemotherapy · 2020Pooled it
- Trial
- Methicillin-resistantCurrent pharmaceutical biotechnology · 2025Review
- Drug repurposing of Nifuratel against methicillin-resistantFrontiers in cellular and infection microbiology · 2025Article
- Persistent Methicilin-Resistant Staphylococcus aureus Bacteremia: Resetting the Clock for Optimal Management.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022Article
- Synergistic effect of vancomycin combined with cefotaxime, imipenem, or meropenem against Staphylococcus aureus with reduced susceptibility to vancomycinTurkish journal of medical sciences · 2021Article
- Phenotypic Switching ofFrontiers in microbiology · 2021Article
- The Evolving Reduction of Vancomycin and Daptomycin Susceptibility in MRSA-Salvaging the Gold Standards with Combination Therapy.Antibiotics (Basel, Switzerland) · 2020Review
- Monotherapy with Vancomycin or Daptomycin versus Combination Therapy with β-Lactams in the Treatment of Methicillin-Resistant Staphylococcus Aureus Bloodstream Infections: A Retrospective Cohort Analysis.Infectious diseases and therapy · 2020Article
- The Potential Role of Sulbactam and Cephalosporins Plus Daptomycin Against Daptomycin-Nonsusceptible VISA and H-VISA Isolates: An in Vitro Study.Antibiotics (Basel, Switzerland) · 2019Article
- Evidence from an In Vitro Study: Is Oxacillin Plus Vancomycin a Better Choice for Heteroresistant Vancomycin-Intermediate Staphylococcus aureus?Infectious diseases and therapy · 2019Article
- Propionate AmelioratesFrontiers in microbiology · 2019Article
- Antibiotics in Development for the Treatment of Resistant Bacterial Disease.Hospital pharmacy · 2018Article
- Combination Antibiotic Exposure Selectively Alters the Development of Vancomycin Intermediate Resistance in Staphylococcus aureus.Antimicrobial agents and chemotherapy · 2018Article
- Combination of cephalosporins with vancomycin or teicoplanin enhances antibacterial effect of glycopeptides against heterogeneous vancomycin-intermediate Staphylococcus aureus (hVISA) and VISA.Scientific reports · 2017Article
- Oritavancin Combinations with β-Lactams against Multidrug-Resistant Staphylococcus aureus and Vancomycin-Resistant Enterococci.Antimicrobial agents and chemotherapy · 2016Article
- Top Guns: The "Maverick" and "Goose" of Empiric Therapy.Surgical infections · 2016Article
- Antibiotics: Synergistic MRSA combinations.Nature chemical biology · 2015Article
- Mechanisms of drug resistance: daptomycin resistance.Annals of the New York Academy of Sciences · 2015Review
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Vancomycin with piperacillin-tazobactam is used as empirical therapy for critically ill patients. Studies of this combination against methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-intermediate S. aureus (VISA) are limited, but β-lactams in combination with vancomycin have shown synergistic activity against MRSA and VISA. The goal of this study was to evaluate whether piperacillin-tazobactam and vancomycin were synergistic against MRSA and VISA in vitro. Bloodstream MRSA (n = 20) and VISA (n = 4) strains were selected. In vitro antimicrobial activities of piperacillin-tazobactam and oxacillin were evaluated by disk diffusion, and MICs were determined by Etest using Muller-Hinton agar with and without vancomycin at one-half the MIC. Time-kill studies evaluated 14 MRSA and all 4 VISA isolates using piperacillin-tazobactam at 300/35 mg/liter or oxacillin at 40 mg/liter alone and with vancomycin at one-half the MIC. Mean zones of inhibition for piperacillin-tazobactam and oxacillin increased with vancomycin against MRSA and VISA (P < 0.001 for all), and the MIC90 decreased with vancomycin against MRSA and VISA to values meeting susceptibility criteria for S. aureus (P < 0.001 for both antibiotics against MRSA). In MRSA time-kill studies, the mean 24-h reductions in inoculum for piperacillin-tazobactam, piperacillin-tazobactam with vancomycin, and oxacillin with vancomycin were 3.53, 3.69, and 2.62 log10 CFU/ml, respectively. The mean 24-h reductions in VISA inoculum for piperacillin-tazobactam, piperacillin-tazobactam with vancomycin, and oxacillin with vancomycin were 2.85, 2.93, and 3.45 log10 CFU/ml, respectively. Vancomycin with piperacillin-tazobactam or oxacillin demonstrated synergistic activity against MRSA and VISA. The clinical implications of these combinations against MRSA and VISA should be investigated.
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Registered trials
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.