Evidence map›Paper›PMID 22347507›Full record

ArticlePloS one2012

Immuno-PCR--a new tool for paleomicrobiology: the plague paradigm.

Nada Malou, Thi-Nguyen-Ny Tran, Claude Nappez, Michel Signoli, Cyrille Le Forestier, Dominique Castex, Michel Drancourt, Didier Raoult

RetractedOpen access · goldAbstract readHistorical Article
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It has been retracted, and should not be counted. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.4field-weighted citation impact, top 17% 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

10 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Yersinia pestis: the Natural History of Plague.Clinical microbiology reviews · 2020
    Review
  5. Ancient dental pulp: Masterpiece tissue for paleomicrobiology.Molecular genetics & genomic medicine · 2020
    Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 1 country.

Nada MalouAix-Marseille Université, URMITE, UMR CNRS 6236- IRD 198, Faculté de Médecine, Marseille, France.
Thi-Nguyen-Ny Tran
Claude Nappez
Michel Signoli
Cyrille Le Forestier
Dominique Castex
Michel Drancourt
Didier Raoult
Aix-Marseille Université · FRCentre National de la Recherche Scientifique · FRUnité de Recherche sur les Maladies Infectieuses et Tropicales Emergentes · FRUniversité de Bordeaux · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe cause of past plague pandemics was controversial but several research teams used PCR techniques and dental pulp as the primary material to reveal that they were caused by Yersinia pestis. However, the degradation of DNA limits the ability to detect ancient infections.

methodsWe used for the first time immuno-PCR to detect Yersinia pestis antigens; it can detect protein concentrations 70 times lower than the standard ELISA. After determining the cut-off value, we tested 34 teeth that were obtained from mass graves of plague, and compared previous PCR results with ELISA and immuno-PCR results.

resultsThe immuno-PCR technique was the most sensitive (14 out of 34) followed by the PCR technique (10 out of 34) and ELISA (3 out of 34). The combination of these three methods identified 18 out of 34 (53%) teeth as presumably being from people with the plague.

conclusionImmuno-PCR is specific (no false-positive samples were found) and more sensitive than the currently used method to detect antigens of ancient infections in dental pulp. The combination of three methods, ELISA, PCR and immuno-PCR, increased the capacity to identify ancient pathogens in dental pulp.

Indexed as

Antigens, BacterialDental PulpEnzyme-Linked Immunosorbent AssayHistory, AncientHumansMethodsPaleontologyPlaguePolymerase Chain ReactionSensitivity and SpecificityToothYersinia pestisAntigens, Bacterial

Identifiers

PMID22347507
PMCPMC3276503
OpenAlexW2077526735

What OpenQuestion holds

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LicenceCC BY
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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.