Evidence map›Paper›PMID 12709328›Full record

ArticleAntimicrobial agents and chemotherapy2003

Daptomycin dose-effect relationship against resistant gram-positive organisms.

Raymond Cha, Richard G Grucz, Michael J Rybak

Abstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

26 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Efficacy and Safety of High Vs Standard Daptomycin Doses Examined in Chinese Patients With Severe Burn Injuries by Pharmacokinetic Evaluation.Journal of burn care & research : official publication of the American Burn Association · 2020
    Article
  4. Review
  5. Article
  6. Article
  7. [Antibiotic therapy: impact and resistance].Medizinische Klinik, Intensivmedizin und Notfallmedizin · 2014
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Daptomycin in bone and joint infections: a review of the literature.Archives of orthopaedic and trauma surgery · 2009
    Review
  20. Article
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.

Raymond ChaAnti-Infective Research Laboratory, Department of Pharmacy Practice, Eugene Applebaum College of Pharmacy and Health Sciences, Detroit, Michigan 48201, USA.
Richard G Grucz
Michael J Rybak

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Daptomycin exhibits in vitro bactericidal activity against clinically significant gram-positive bacteria. We employed pharmacodynamic modeling to determine a once-daily dosing regimen of daptomycin that correlates to pharmacodynamic endpoints for different resistant gram-positive clinical strains. An in vitro pharmacodynamic model with an initial inoculum of 6 log(10) CFU/ml was used to simulate daptomycin regimens ranging in dose from 0 to 9 mg/kg of body weight/day, with corresponding exposures reflecting free-daptomycin concentrations in serum. Bacterial density was profiled over 48 h for two methicillin-resistant Staphylococcus aureus (MRSA-67 and -R515), two glycopeptide intermediate-resistant S. aureus (GISA-992 and -147398), and two vancomycin-resistant Enterococcus faecium (VREF-12366 and -SF12047) strains. A sigmoid dose-response model was used to estimate the effective dose required to achieve 50% (ED(50)) and 80% (ED(80)) bacterial density reduction at 48 h. Daptomycin MICs for study isolates ranged from 0.125 to 4 micro g/ml. Model fitting resulted in an r(2) of >0.80 for all tested isolates. Control growths at 48 h ranged from 7.3 to 8.5 log(10) CFU/ml. Sigmoid relationships were not superimposable between categorical resistant species: ED(50) and ED(80) values were 1.9 and 3.1, 4.2 and 5.6, and 5.4 and 6.8 mg/kg for MRSA, GISA, and VREF isolates, respectively. Doses required to achieve ED(50) and ED(80) values correlated with MIC differences between tested organisms. Corresponding area under the concentration-time curve from 0 to 24 h/MIC exposure ratios demonstrated a wide range of ED(80) values among the tested isolates. Doses ranging between 3 and 7 mg/kg produced significant bactericidal activity (ED(80)) against these multidrug-resistant S. aureus and E. faecium isolates.

Indexed as

AnimalsAnti-Bacterial AgentsDaptomycinDose-Response Relationship, DrugEnterococcus faeciumGram-Positive BacteriaMethicillin ResistanceMicrobial Sensitivity TestsStaphylococcus aureusVancomycin ResistanceAnti-Bacterial AgentsDaptomycin

Identifiers

PMID12709328
PMCPMC153299

What OpenQuestion holds

Textmetadata
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.