Evidence map›Paper›PMID 25510713›Full record

ArticleThe American journal of tropical medicine and hygiene2015

Recombinase polymerase amplification-based assay to diagnose Giardia in stool samples.

Zachary Austin Crannell, Miguel Mauricio Cabada, Alejandro Castellanos-Gonzalez, Ayesha Irani, Arthur Clinton White, Rebecca Richards-Kortum

Abstract read
In one paragraph

Article in The American journal of tropical medicine and hygiene, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing 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

29 citing papers in PubMed.

  1. Survey ofTransboundary and emerging diseases · 2025
    Article
  2. Article
  3. Development of an LFD-RPA Assay for Rapid Detection ofCurrent issues in molecular biology · 2023
    Article
  4. Article
  5. Article
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  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. DNA-Detection Based Diagnostics forJournal of parasitology research · 2020
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  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

6 authors.

Zachary Austin CrannellRice University, Bioengineering, Houston, Texas; Universidad Peruana Cayetano Heredia, Department of Internal Medicine, Cusco, Peru; University of Texas Medical Branch, Department of Internal Medicine, Galveston, Texas zcrannell@gmail.com.
Miguel Mauricio CabadaRice University, Bioengineering, Houston, Texas; Universidad Peruana Cayetano Heredia, Department of Internal Medicine, Cusco, Peru; University of Texas Medical Branch, Department of Internal Medicine, Galveston, Texas.
Alejandro Castellanos-GonzalezRice University, Bioengineering, Houston, Texas; Universidad Peruana Cayetano Heredia, Department of Internal Medicine, Cusco, Peru; University of Texas Medical Branch, Department of Internal Medicine, Galveston, Texas.
Ayesha IraniRice University, Bioengineering, Houston, Texas; Universidad Peruana Cayetano Heredia, Department of Internal Medicine, Cusco, Peru; University of Texas Medical Branch, Department of Internal Medicine, Galveston, Texas.
Arthur Clinton WhiteRice University, Bioengineering, Houston, Texas; Universidad Peruana Cayetano Heredia, Department of Internal Medicine, Cusco, Peru; University of Texas Medical Branch, Department of Internal Medicine, Galveston, Texas.
Rebecca Richards-KortumRice University, Bioengineering, Houston, Texas; Universidad Peruana Cayetano Heredia, Department of Internal Medicine, Cusco, Peru; University of Texas Medical Branch, Department of Internal Medicine, Galveston, Texas.

Funding

WRCE Nonhuman Primate CoreU54AI057156 · NIAID · UNIVERSITY OF TEXAS MEDICAL BR GALVESTON · PI WALKER, DAVID H · 2003 to 2013
$102.6M
UTMB Clinical and Translational Science AwardUL1TR000071 · NCATS · UNIVERSITY OF TEXAS MED BR GALVESTON · PI BRASIER, ALLAN R. · 2012 to 2014
$14.4M
NCATS NIH HHS UL1 TR000071NCATS NIH HHS UL1TR000071NIAID NIH HHS U54 AI057156NIAID NIH HHS U54AI057156
6 · The paper itself

Abstract

Giardia duodenalis is one of the most commonly identified parasites in stool samples. Although relatively easy to treat, giardiasis can be difficult to detect as it presents similar to other diarrheal diseases. Here, we present a recombinase polymerase amplification-based Giardia (RPAG) assay to detect the presence of Giardia in stool samples. The RPAG assay was characterized on the bench top using stool samples spiked with Giardia cysts where it showed a limit-of-detection nearly as low as the gold standard polymerase chain reaction assay. The RPAG assay was then tested in the highlands of Peru on 104 stool samples collected from the surrounding communities where it showed 73% sensitivity and 95% specificity against a polymerase chain reaction and microscopy composite gold standard. Further improvements in clinical sensitivity will be needed for the RPAG assay to have clinical relevance.

Indexed as

FecesGiardia lambliaGiardiasisHumansPeruPolymerase Chain ReactionRecombinasesSensitivity and SpecificityRecombinases

Identifiers

PMID25510713
PMCPMC4350554

What OpenQuestion holds

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Registered trials

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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.