Evidence map›Paper›PMID 18424532›Full record

ArticleApplied and environmental microbiology2008

Development and experimental validation of a predictive threshold cycle equation for quantification of virulence and marker genes by high-throughput nanoliter-volume PCR on the OpenArray platform.

Robert D Stedtfeld, Samuel W Baushke, Dieter M Tourlousse, Sarah M Miller, Tiffany M Stedtfeld, Erdogan Gulari, James M Tiedje, Syed A Hashsham

Abstract readValidation Study
In one paragraph

Article in Applied and environmental microbiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

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

  1. Pooled it
  2. Review
  3. Review
  4. High-Throughput Multiparallel Enteropathogen Detection via Nano-Liter qPCR.Frontiers in cellular and infection microbiology · 2020
    Article
  5. Review
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  12. Review
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  18. Review
  19. In-feed antibiotic effects on the swine intestinal microbiome.Proceedings of the National Academy of Sciences of the United States of America · 2012
    Article
  20. Digital PCR on a SlipChip.Lab on a chip · 2010
    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.

Robert D StedtfeldDepartment of Civil and Environmental Engineering, Michigan State University, East Lansing, MI 48824, USA.
Samuel W Baushke
Dieter M Tourlousse
Sarah M Miller
Tiffany M Stedtfeld
Erdogan Gulari
James M Tiedje
Syed A Hashsham

Funding

Flexible Biochip for Highly Parallel Microbial DetectionR01RR018625 · NCRR · MICHIGAN STATE UNIVERSITY · PI HASHSHAM, SYED A. · 2003 to 2005
$1.4M
NCRR NIH HHS R01 RR018625NCRR NIH HHS R01 RR018625-01
6 · The paper itself

Abstract

Development of quantitative PCR (QPCR) assays typically requires extensive screening within and across a given species to ensure specific detection and lucid identification among various pathogenic and nonpathogenic strains and to generate standard curves. To minimize screening requirements, multiple virulence and marker genes (VMGs) were targeted simultaneously to enhance reliability, and a predictive threshold cycle (C(T)) equation was developed to calculate the number of starting copies based on an experimental C(T). The empirical equation was developed with Sybr green detection in nanoliter-volume QPCR chambers (OpenArray) and tested with 220 previously unvalidated primer pairs targeting 200 VMGs from 30 pathogens. A high correlation (R(2) = 0.816) was observed between the predicted and experimental C(T)s based on the organism's genome size, guanine and cytosine (GC) content, amplicon length, and stability of the primer's 3' end. The performance of the predictive C(T) equation was tested using 36 validation samples consisting of pathogenic organisms spiked into genomic DNA extracted from three environmental waters. In addition, the primer success rate was dependent on the GC content of the target organisms and primer sequences. Targeting multiple assays per organism and using the predictive C(T) equation are expected to reduce the extent of the validation necessary when developing QPCR arrays for a large number of pathogens or other targets.

Indexed as

Water MicrobiologyBacteriaBacterial ProteinsBase CompositionBenzothiazolesDiaminesDNA PrimersGene DosageModels, TheoreticalOrganic ChemicalsPolymerase Chain ReactionQuinolinesVirulenceVirulence FactorsBacterial ProteinsBenzothiazolesDiaminesDNA PrimersOrganic ChemicalsQuinolinesSYBR Green IVirulence Factors

Identifiers

PMID18424532
PMCPMC2446556

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.