Evidence map›Paper›PMID 30949707›Full record

ArticleThe Journal of antimicrobial chemotherapy2019

Pharmacokinetics/pharmacodynamics of lefamulin in a neutropenic murine pneumonia model with Staphylococcus aureus and Streptococcus pneumoniae.

Wolfgang W Wicha, Dirk B Strickmann, Susanne Paukner

Open access · greenAbstract read
In one paragraph

Article in The Journal of antimicrobial chemotherapy, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
6.5field-weighted citation impact, top 3% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 38 citations in OpenAlex.

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  9. Porphyrin nanoemulsion for antimicrobial photodynamic therapy: effective delivery to inactivate biofilm-related infections.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  10. Tissue Distribution of [Antimicrobial agents and chemotherapy · 2022
    Article
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  14. Review
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  19. Imaging of bioluminescentThe Journal of international medical research · 2020
    Article
  20. Clinical Utility of Lefamulin: If Not Now, When?Current infectious disease reports · 2020
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Wolfgang W WichaNabriva Therapeutics GmbH, Vienna, Austria.
Dirk B StrickmannNabriva Therapeutics GmbH, Vienna, Austria.
Susanne PauknerNabriva Therapeutics GmbH, Vienna, Austria.
Nabriva Therapeutics (Austria) · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo present results of preclinical studies that supported further development of lefamulin for treating patients with community-acquired bacterial pneumonia (CABP).

methodsThe effect of bovine lung surfactant on the antibacterial activity of lefamulin against Streptococcus pneumoniae and Staphylococcus aureus was determined by broth microdilution assay. In vitro accumulation of lefamulin was evaluated in J774 mouse macrophages. Pharmacokinetics was assessed in female BALB/c (Bagg albino) mice treated with subcutaneous lefamulin (35 or 70 mg/kg). In neutropenic lung infection experiments, BALB/c mice received intraperitoneal cyclophosphamide before challenge with single S. pneumoniae or S. aureus strains; subcutaneous lefamulin (1.25-160 mg/kg) was given twice daily post-infection. Hill models described relationships between AUC/MIC ratios and changes in log10 cfu.

resultsLung surfactant did not significantly increase lefamulin MIC values against test strains. Lefamulin uptake in macrophages was rapid (a plateau was reached in ∼3 h). In mice, distribution of lefamulin [plasma to epithelial lining fluid (ELF)] was rapid, showing an ∼2-fold increase in lefamulin exposure in the ELF during the 5.5 h period. Median plasma AUC/MIC ratios associated with 1 and 2 log10 cfu reductions from baseline were 1.37 and 2.15, respectively, for S. pneumoniae and 2.13 and 6.24 for S. aureus. Corresponding ELF results were 14.0 and 22.0 for S. pneumoniae and 21.7 and 63.9 for S. aureus.

conclusionsOverall, lefamulin displays desirable pharmacokinetic/pharmacodynamic relationships that are predictive of the clinical effectiveness of lefamulin and other antibacterial agents used to treat CABP.

Indexed as

AnimalsAnti-Bacterial AgentsArea Under CurveCattleCommunity-Acquired InfectionsCyclophosphamideDisease Models, AnimalDiterpenesDrug Evaluation, PreclinicalFemaleHumansInjections, SubcutaneousLungMacrophagesMiceMice, Inbred BALB CAnti-Bacterial AgentsCyclophosphamideDiterpeneslefamulinPolycyclic CompoundsSurface-Active AgentsThioglycolates

Identifiers

PMID30949707
PMCPMC6449573
OpenAlexW2930309673

What OpenQuestion holds

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LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.