Evidence map›Paper›PMID 23596244›Full record

ArticleJournal of clinical microbiology2013

Detection of methicillin-resistant Staphylococcus aureus by a duplex droplet digital PCR assay.

Kashonda Kelley, Angela Cosman, Phillip Belgrader, Brenda Chapman, Donna C Sullivan

Open access · bronzeAbstract readComparative StudyEvaluation Study
In one paragraph

Article in Journal of clinical microbiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
6.1field-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

22 citing papers in PubMed, 79 citations in OpenAlex.

  1. Article
  2. Comparison ofInternational journal of molecular sciences · 2025
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  8. Droplet microfluidics for high-sensitivity and high-throughput detection and screening of disease biomarkers.Wiley interdisciplinary reviews. Nanomedicine and nanobiotechnology · 2018
    Review
  9. In vitro antimicrobial susceptibility testing methods: agar dilution to 3D tissue-engineered models.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2018
    Review
  10. Article
  11. Article
  12. Three-color crystal digital PCR.Biomolecular detection and quantification · 2016
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Comparison of droplet digital PCR and quantitative real-time PCR inBiotechnology reports (Amsterdam, Netherlands) · 2014
    Article
  19. Review
  20. 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

5 authors at 2 institutions in 1 country.

Kashonda KelleyDepartment of Medicine, University of Mississippi Medical Center, Jackson, Mississippi, USA.
Angela Cosman
Phillip Belgrader
Brenda Chapman
Donna C Sullivan
University of Mississippi Medical Center · USBio-Rad (United States) · US

Funding

Rapid, Cost-Effective Nucleic Acid Testing for Active Surveillance and MolecularR01EB010106 · NIBIB · QUANTALIFE, INC. · PI HINDSON, BEN · 2010 to 2011
$2.2M
NIBIB NIH HHS 1R01EB010106-01A1NIBIB NIH HHS R01 EB010106
6 · The paper itself

Abstract

Health care-associated infections with methicillin-resistant Staphylococcus aureus (MRSA) contribute to significant hospitalization costs. We report here a droplet digital PCR (ddPCR) assay, which is a next-generation emulsion-based endpoint PCR assay for high-precision MRSA analysis. Reference cultures of MRSA, methicillin-susceptible S. aureus (MSSA), and confounders were included as controls. Copan swabs were used to sample cultures and collect specimens for analysis from patients at a large teaching hospital. Swab extraction and cell lysis were accomplished using magnetic-driven agitation of silica beads. Quantitative PCR (qPCR) (Roche Light Cycler 480) and ddPCR (Bio-Rad QX100 droplet digital PCR system) assays were used to detect genes for the staphylococcal protein SA0140 (SA) and the methicillin resistance (mecA) gene employing standard TaqMan chemistries. Both qPCR and ddPCR assays correctly identified culture controls for MRSA (76), MSSA (12), and confounder organisms (36) with 100% sensitivity and specificity. Analysis of the clinical samples (211 negative and 186 positive) collected during a study of MRSA nasal carriage allowed direct comparison of the qPCR and ddPCR assays to the Cepheid MRSA GeneXpert assay. A total of 397 clinical samples were examined in this study. Cepheid MRSA GeneXpert values were used to define negative and positive samples. Both the qPCR and ddPCR assays were in good agreement with the reference assay. The sensitivities for the qPCR and ddPCR assays were 96.8% (95% confidence interval [CI], 93.1 to 98.5%) and 96.8% (95% CI, 93.1 to 98.5%), respectively. Both the qPCR and ddPCR assays had specificities of 91.9% (95% CI, 87.5 to 94.9%) for qPCR and 91.0% (95% CI, 86.4 to 94.2%) for ddPCR technology.

Indexed as

Bacterial ProteinsBacteriological TechniquesCarrier StateHumansMethicillin-Resistant Staphylococcus aureusMolecular Diagnostic TechniquesMultiplex Polymerase Chain ReactionNasal MucosaSensitivity and SpecificityStaphylococcal InfectionsBacterial Proteins

Identifiers

PMID23596244
PMCPMC3697713
OpenAlexW2148433387

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.