Evidence map›Paper›PMID 33037786›Full record

ArticleMolecular ecology resources2021

Contaminations contaminate common databases.

Staffan Bensch, Mizue Inumaru, Yukita Sato, Larisa Lee Cruz, Andrew A Cunningham, Simon J Goodman, Iris I Levin, Patricia G Parker, Patricia Casanueva, Maria-Angeles Hernández and 2 more

Abstract read
In one paragraph

Article in Molecular ecology resources, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

17 citing papers in PubMed.

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  17. Contaminations contaminate common databases.Molecular ecology resources · 2021
    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

12 authors.

Staffan BenschDepartment of Biology, MEEL, Lund University, Lund, Sweden.ORCID https://orcid.org/0000-0002-0082-0899
Mizue InumaruLaboratory of Biomedical Science, Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Fujisawa, Japan.
Yukita SatoLaboratory of Biomedical Science, Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, Fujisawa, Japan.
Larisa Lee CruzMaison de la Télédétection, Montpellier, France.
Andrew A CunninghamInstitute of Zoology, Zoological Society of London, London, UK.
Simon J GoodmanSchool of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK.
Iris I LevinDepartment of Biology, Kenyon College, Gambier, OH, USA.
Patricia G ParkerDepartment of Biology and Whitney R. Harris World Ecology Center, University of Missouri -St. Louis, St. Louis, MO, USA.
Patricia CasanuevaDepartamento de Ciencias Experimentales, Universidad Europea Miguel de Cervantes, Calle Padre Julio Chevalier, Valladolid, Spain.
Maria-Angeles HernándezDepartamento de Biología Ambiental, Facultad de Ciencias, Universidad de Navarra, Pamplona, Spain.
Gregorio Moreno-RuedaDepartamento de Zoología, Universidad de Granada, Granada, Spain.
Maria-Angeles RojoDepartamento de Ciencias Experimentales, Universidad Europea Miguel de Cervantes, Calle Padre Julio Chevalier, Valladolid, Spain.

Funding

Swedish Research Council 2017-03937
6 · The paper itself

Abstract

The polymerase chain reaction (PCR) is a very powerful method to detect and identify pathogens. The high sensitivity of the method, however, comes with a cost; any of the millions of artificial DNA copies generated by PCR can serve as a template in a following experiment. If not identified as contaminations, these may result in erroneous conclusions on the occurrence of the pathogen, thereby inflating estimates of host range and geographic distribution. In the present paper, we evaluate whether several published records of avian haemosporidian parasites, in either unusual host species or geographical regions, might stem from PCR contaminations rather than novel biological findings. The detailed descriptions of these cases are shedding light upon the steps in the work process that might lead to PCR contaminations. By increasing the awareness of this problem, it will aid in developing procedures that keep these to a minimum. The examples in the present paper are from haemosporidians of birds, however the problem of contaminations and suggested actions should apply generally to all kinds of PCR-based identifications, not just of parasites and pathogens.

Indexed as

Bird DiseasesDatabases, GeneticHaemosporidaAnimalsBirdsDNA, ProtozoanPhylogenyPolymerase Chain ReactionDNA, ProtozoanHaemoproteushaemosporidian parasitesPCR contaminationplasmodiumsequence databases

Identifiers

PMID33037786
PMCPMC7820996

What OpenQuestion holds

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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.