Evidence map›Paper›PMID 27992475›Full record

ArticlePloS one2016

A Systematic Investigation of Parameters Influencing Droplet Rain in the Listeria monocytogenes prfA Assay - Reduction of Ambiguous Results in ddPCR.

Anna Kristina Witte, Patrick Mester, Susanne Fister, Matthias Witte, Dagmar Schoder, Peter Rossmanith

Abstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–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

21 citing papers in PubMed.

  1. Article
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  5. Article
  6. Article
  7. Evaluation of Droplet Digital PCR for the Detection ofAnnals of laboratory medicine · 2024
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Antibiotics reduce bacterial load inAccess microbiology · 2022
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Detection of fish allergen by droplet digital PCR.Italian journal of food safety · 2018
    Article
  18. Article
  19. Article
  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

6 authors.

Anna Kristina WitteChristian Doppler Laboratory for Monitoring of Microbial Contaminants, Institute of Milk Hygiene, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, Vienna, Austria.
Patrick MesterChristian Doppler Laboratory for Monitoring of Microbial Contaminants, Institute of Milk Hygiene, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, Vienna, Austria.
Susanne FisterChristian Doppler Laboratory for Monitoring of Microbial Contaminants, Institute of Milk Hygiene, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, Vienna, Austria.
Matthias WitteDepartment of Psychology, University of Graz, Graz, Austria.
Dagmar SchoderChristian Doppler Laboratory for Monitoring of Microbial Contaminants, Institute of Milk Hygiene, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, Vienna, Austria.
Peter RossmanithChristian Doppler Laboratory for Monitoring of Microbial Contaminants, Institute of Milk Hygiene, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, Vienna, Austria.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The droplet digital polymerase chain reaction (ddPCR) determines DNA amounts based upon the pattern of positive and negative droplets, according to Poisson distribution, without the use of external standards. However, division into positive and negative droplets is often not clear because a part of the droplets has intermediate fluorescence values, appearing as "rain" in the plot. Despite the droplet rain, absolute quantification with ddPCR is possible, as shown previously for the prfA assay in quantifying Listeria monocytogenes. Nevertheless, reducing the rain, and thus ambiguous results, promotes the accuracy and credibility of ddPCR. In this study, we extensively investigated chemical and physical parameters for optimizing the prfA assay for ddPCR. While differences in the concentration of all chemicals and the dye, quencher and supplier of the probe did not alter the droplet pattern, changes in the PCR cycling program, such as prolonged times and increased cycle numbers, improved the assay.

Indexed as

Bacterial ProteinsDNA, BacterialFluorescenceListeria monocytogenesPeptide Termination FactorsPoisson DistributionPolymerase Chain ReactionRainBacterial ProteinsDNA, BacterialPeptide Termination FactorsPrfA protein, Listeria monocytogenes

Identifiers

PMID27992475
PMCPMC5167268

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.