Evidence map›Paper›PMID 20430789›Full record

ArticleThe Journal of antimicrobial chemotherapy2010

Colistin susceptibility testing: evaluation of reliability for cystic fibrosis isolates of Pseudomonas aeruginosa and Stenotrophomonas maltophilia.

Samuel M Moskowitz, Elizabeth Garber, Yunhua Chen, Sarah A Clock, Setareh Tabibi, Amanda K Miller, Michael Doctor, Lisa Saiman

Open access · bronzeAbstract readComparative StudyEvaluation Study
In one paragraph

Article in The Journal of antimicrobial chemotherapy, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 9% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 65 citations in OpenAlex.

  1. Pooled it
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  5. Review
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  9. Review
  10. Cannabidiol Is a Novel Modulator of Bacterial Membrane Vesicles.Frontiers in cellular and infection microbiology · 2019
    Article
  11. Article
  12. Evaluation of colistin stability in agar and comparison of four methods for MIC testing of colistin.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2018
    Article
  13. Article
  14. Article
  15. Development of New Tools to Detect Colistin-Resistance among Enterobacteriaceae Strains.The Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2018
    Review
  16. Article
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  18. Review
  19. Review
  20. Evaluation of colistin susceptibility in multidrug-resistant clinical isolates from cystic fibrosis, France.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2013
    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

8 authors at 2 institutions in 1 country.

Samuel M MoskowitzDepartment of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA. smoskowitz@partners.org
Elizabeth Garber
Yunhua Chen
Sarah A Clock
Setareh Tabibi
Amanda K Miller
Michael Doctor
Lisa Saiman
Columbia University · USUniversity of Washington · US

Funding

Polymyxin-resistant Pseudomonas in CF Lung InfectionR01AI067653 · NIAID · UNIVERSITY OF WASHINGTON · PI MOSKOWITZ, SAMUEL M · 2007 to 2010
$2.5M
Training in Interdisciplinary Research to Reduce Antimicrobial Resistance (TIRAR)T90NR010824 · NINR · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI LARSON, ELAINE LUCILLE · 2007 to 2011
$1.0M
Host-Pathogen Interactions in Cystic FibrosisK08HL067903 · NHLBI · UNIVERSITY OF WASHINGTON · PI MOSKOWITZ, SAMUEL M · 2001 to 2005
$628k
NHLBI NIH HHS K08 HL067903NIAID NIH HHS R01 AI067653NINR NIH HHS T90 NR010824
6 · The paper itself

Abstract

objectivesAntibiotic susceptibility methods that are commonly used to test bacterial isolates from patients with cystic fibrosis are of uncertain reliability for the polymyxins. To assess the reliability of four standard testing methods, this pilot study used a challenge set that included polymyxin-resistant isolates of Pseudomonas aeruginosa and Stenotrophomonas maltophilia.

methodsTwenty-five P. aeruginosa and 12 S. maltophilia isolates were tested for susceptibility to colistin (polymyxin E). Repeatability (concordance of replicates performed concurrently), reproducibility (concordance of replicates performed over time) and comparability (concordance of different methods) of agar dilution, broth microdilution, Etest and disc diffusion were assessed through the use of descriptive statistics and scatterplot analyses.

resultsAll four methods displayed excellent repeatability (overall concordance rate of 99%). However, analysis of reproducibility revealed substantially lower rates of concordance (74% for agar dilution, 84% for broth microdilution and Etest, and 91% for disc diffusion). In addition, comparability to agar dilution of the three other methods was generally poor, with overall rates of very major error ranging from 12% for broth microdilution to 18% for Etest and disc diffusion.

conclusionsCompared with agar dilution, other susceptibility testing methods give high rates of apparent false polymyxin susceptibility for cystic fibrosis isolates of P. aeruginosa and S. maltophilia. Prospective study of the correlation between in vitro susceptibility and clinical response is needed to clarify whether these discrepancies reflect oversensitivity of the agar dilution method or insensitivity of the other methods.

Indexed as

Anti-Bacterial AgentsColistinCystic FibrosisFalse Positive ReactionsGram-Negative Bacterial InfectionsHumansMicrobial Sensitivity TestsPseudomonas aeruginosaReproducibility of ResultsSensitivity and SpecificityStenotrophomonas maltophiliaAnti-Bacterial AgentsColistin

Identifiers

PMID20430789
PMCPMC2882871
OpenAlexW2166530074

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.