Trial reportAntimicrobial agents and chemotherapy2015
Meropenem-RPX7009 Concentrations in Plasma, Epithelial Lining Fluid, and Alveolar Macrophages of Healthy Adult Subjects.
Trial report in Antimicrobial agents and chemotherapy, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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
73 citing papers in PubMed, 2 syntheses or guidelines pooled it, 111 citations in OpenAlex.
- Effectiveness and safety of meropenem-vaborbactam versus ceftazidime-avibactam in multidrug-resistant Gram-negative infections: a systematic review and meta-analysis with trial sequential analysis.Antimicrobial agents and chemotherapy · 2026Pooled it
- Scaling beta-lactam antimicrobial pharmacokinetics from early life to old age.British journal of clinical pharmacology · 2019Pooled it
- Bronchopulmonary disposition of IV cefepime/taniborbactam (2-0.5 g) administered over 2 h in healthy adult subjects.The Journal of antimicrobial chemotherapy · 2023Trial
- Intrapulmonary Pharmacokinetics of Relebactam, a Novel β-Lactamase Inhibitor, Dosed in Combination with Imipenem-Cilastatin in Healthy Subjects.Antimicrobial agents and chemotherapy · 2018Trial
- Trial
- Pulmonary Pharmacokinetics/Pharmacodynamics of Commonly Used Antibiotics in the Treatment of Community-Acquired Pneumonia.European journal of drug metabolism and pharmacokinetics · 2026Review
- Evidence of intrapulmonary penetration of nacubactam, a novel β-lactamase inhibitor, following coadministration of nacubactam with meropenem in healthy adults.Antimicrobial agents and chemotherapy · 2026Article
- Challenges and opportunities in the management of severe pneumonia. Key concepts from the Seventh Annual Meeting of Spanish Experts 2025.Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia · 2026Review
- Aminoglycosides enhance meropenem/vaborbactam activity against KPC-producingAntimicrobial agents and chemotherapy · 2026Article
- Pharmacokinetics, safety and population pharmacokinetics/pharmacodynamics analysis of meropenem-vaborbactam in Chinese healthy participants.Frontiers in pharmacology · 2026Article
- Clinical efficacy, safety and pharmacokinetics of novel β-lactam/β-lactamase inhibitor combinations: a systematic review.JAC-antimicrobial resistance · 2025Review
- Breaking Through Resistance: A Comparative Review of New Beta-Lactamase Inhibitors (Avibactam, Vaborbactam, Relebactam) Against Multidrug-Resistant Superbugs.Antibiotics (Basel, Switzerland) · 2025Review
- Nanomedicine approaches to enhance the effectiveness of meropenem: a strategy to tackle antimicrobial resistance.Discover nano · 2025Review
- Predicting the Effect of Meropenem AgainstAntibiotics (Basel, Switzerland) · 2025Article
- Breakthrough Advances in Beta-Lactamase Inhibitors: New Synthesized Compounds and Mechanisms of Action Against Drug-Resistant Bacteria.Pharmaceuticals (Basel, Switzerland) · 2025Review
- Article
- In Vitro Dynamic Model Evaluation of Meropenem Alone and in Combination with Avibactam Against Carbapenemase-ProducingPharmaceuticals (Basel, Switzerland) · 2024Article
- Effect of Meropenem on Conjugative Plasmid Transfer inInternational journal of molecular sciences · 2024Article
- Novel Antibiotics for Gram-Negative Nosocomial Pneumonia.Antibiotics (Basel, Switzerland) · 2024Review
- Efficacy and Safety of Ceftazidime-Avibactam Alone versus Ceftazidime-Avibactam Plus Fosfomycin for the Treatment of Hospital-Acquired Pneumonia and Ventilator-Associated Pneumonia: A Multicentric Retrospective Study from the SUSANA Cohort.Antibiotics (Basel, Switzerland) · 2024Article
13 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
7 authors at 3 institutions in 1 country.
Funding
Abstract
The steady-state concentrations of meropenem and the β-lactamase inhibitor RPX7009 in plasma, epithelial lining fluid (ELF), and alveolar macrophage (AM) concentrations were obtained in 25 healthy, nonsmoking adult subjects. Subjects received a fixed combination of meropenem (2 g) and RPX7009 (2 g) administered every 8 h, as a 3-h intravenous infusion, for a total of three doses. A bronchoscopy and bronchoalveolar lavage were performed once in each subject at 1.5, 3.25, 4, 6, or 8 h after the start of the last infusion. Meropenem and RPX7009 achieved a similar time course and magnitude of concentrations in plasma and ELF. The mean pharmacokinetic parameters ± the standard deviations of meropenem and RPX7009 determined from serial plasma concentrations were as follows: Cmax = 58.2 ± 10.8 and 59.0 ± 8.4 μg/ml, Vss = 16.3 ± 2.6 and 17.6 ± 2.6 liters; CL = 11.1 ± 2.1 and 10.1 ± 1.9 liters/h, and t1/2 = 1.03 ± 0.15 and 1.27 ± 0.21 h, respectively. The intrapulmonary penetrations of meropenem and RPX7009 were ca. 63 and 53%, respectively, based on the area under the concentration-time curve from 0 to 8 h (AUC0-8) values of ELF and total plasma concentrations. When unbound plasma concentrations were considered, ELF penetrations were 65 and 79% for meropenem and RPX7009, respectively. Meropenem concentrations in AMs were below the quantitative limit of detection, whereas median concentrations of RPX7009 in AMs ranged from 2.35 to 6.94 μg/ml. The results from the present study lend support to exploring a fixed combination of meropenem (2 g) and RPX7009 (2 g) for the treatment of lower respiratory tract infections caused by meropenem-resistant Gram-negative pathogens susceptible to the combination of meropenem-RPX7009.
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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.