ArticleAntimicrobial agents and chemotherapy2016
Pharmacodynamics of Ceftazidime and Avibactam in Neutropenic Mice with Thigh or Lung Infection.
Article in Antimicrobial agents and chemotherapy, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
62 citing papers in PubMed, 2 syntheses or guidelines pooled it, 101 citations in OpenAlex.
- What are the optimal pharmacokinetic/pharmacodynamic targets for β-lactamase inhibitors? A systematic review.The Journal of antimicrobial chemotherapy · 2024Pooled it
- Pharmacological aspects and spectrum of action of ceftazidime-avibactam: a systematic review.Infection · 2018Pooled it
- Intrapulmonary penetration of ceftolozane/tazobactam and ceftazidime/avibactam administered by continuous infusion in critically ill patients with nosocomial pneumonia: a randomized pharmacokinetic trial.Critical care (London, England) · 2026Trial
- Population Pharmacokinetic Modelling of Ceftazidime and Avibactam in the Plasma and Epithelial Lining Fluid of Healthy Volunteers.Drugs in R&D · 2018Trial
- Pharmacokinetic-Pharmacodynamic Target Attainment Analyses To Determine Optimal Dosing of Ceftazidime-Avibactam for the Treatment of Acute Pulmonary Exacerbations in Patients with Cystic Fibrosis.Antimicrobial agents and chemotherapy · 2017Trial
- Breaking the deadlock of metallo-β-lactamases: evidence and prospects for Aztreonam/Avibactam.Emerging microbes & infections · 2026Review
- Preclinical Pharmacokinetics and Pharmacodynamics of Antibiotic Adjuvants.ACS infectious diseases · 2026Review
- Comment on "evaluation of high dose post-dialytic versus daily beta-lactam dosing in hemodialysis patients using Monte Carlo simulation".International journal of clinical pharmacy · 2026Article
- Pharmacodynamic studies of taniborbactam (VNRX-5133) combined with cefepime against β-lactamase-producing Gram-negative bacteria in a neutropenic murine thigh infection model.The Journal of antimicrobial chemotherapy · 2026Article
- Model-Informed Ceftazidime-Avibactam Dosing Stratified by Renal Function and Renal Replacement Therapy Status in Critically Ill Patients: A Prospective Population Pharmacokinetic and Monte Carlo Simulation Study.Drug design, development and therapy · 2026Article
- Clinical efficacy, safety and pharmacokinetics of novel β-lactam/β-lactamase inhibitor combinations: a systematic review.JAC-antimicrobial resistance · 2025Review
- A model-based evaluation of the pharmacokinetics-pharmacodynamics (PKPD) of avibactam in combination with ceftazidime.JAC-antimicrobial resistance · 2025Article
- Continuous infusion versus intermittent dosing of ceftazidime/avibactam in critically ill patients withFrontiers in pharmacology · 2025Article
- Challenges for global antibiotic regimen planning and establishing antimicrobial resistance targets: implications for the WHO Essential Medicines List and AWaRe antibiotic book dosing.Clinical microbiology reviews · 2024Review
- Article
- Ceftazidime-avibactam induced renal disorders: past and present.Frontiers in pharmacology · 2024Review
- Pharmacokinetic/pharma-codynamic study of pralurbactam (FL058) combined with meropenem in a neutropenic murine thigh infection model.Frontiers in microbiology · 2024Article
- Adequacy of the Dosing and Infusion Time of Ceftazidime/Avibactam for the Treatment of Gram-Negative Bacterial Infections: A PK/PD Simulation Study.Infection and drug resistance · 2024Article
- Imipenem/funobactam (formerly XNW4107) in vivo pharmacodynamics against serine carbapenemase-producing Gram-negative bacteria: a novel modelling approach for time-dependent killing.The Journal of antimicrobial chemotherapy · 2023Article
- Development of an optimized and practical pharmacokinetics/pharmacodynamics analysis method for aztreonam/nacubactam against carbapenemase-producing K. pneumoniae.The Journal of antimicrobial chemotherapy · 2023Article
2 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
8 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Avibactam is a new non-β-lactam β-lactamase inhibitor that shows promising restoration of ceftazidime activity against microorganisms producing Ambler class A extended-spectrum β-lactamases (ESBLs) and carbapenemases such as KPCs, class C β-lactamases (AmpC), and some class D enzymes. To determine optimal dosing combinations of ceftazidime-avibactam for treating infections with ceftazidime-resistant Pseudomonas aeruginosa, pharmacodynamic responses were explored in murine neutropenic thigh and lung infection models. Exposure-response relationships for ceftazidime monotherapy were determined first. Subsequently, the efficacy of adding avibactam every 2 h (q2h) or q8h to a fixed q2h dose of ceftazidime was determined in lung infection for two strains. Dosing avibactam q2h was significantly more efficacious, reducing the avibactam daily dose for static effect by factors of 2.7 and 10.1, whereas the mean percentage of the dosing interval that free drug concentrations remain above the threshold concentration of 1 mg/liter (%fT>C(T) 1 mg/liter) yielding bacteriostasis was similar for both regimens, with mean values of 21.6 (q2h) and 18.5 (q8h). Dose fractionation studies of avibactam in both the thigh and lung models indicated that the effect of avibactam correlated well with %fT>C(T) 1 mg/liter. This parameter of avibactam was further explored for four P. aeruginosa strains in the lung model and six in the thigh model. Parameter estimates of %fT>C(T) 1 mg/liter for avibactam ranged from 0 to 21.4% in the lung model and from 14.1 to 62.5% in the thigh model to achieve stasis. In conclusion, addition of avibactam enhanced the effect of ceftazidime, which was more pronounced at frequent dosing and well related with %fT>C(T) 1 mg/liter. The thigh model appeared more stringent, with higher values, ranging up to 62.5% fT>C(T) 1 mg/liter, required for a static effect.
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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.