Evidence map›Paper›PMID 25145276›Full record

ArticleJournal of visualized experiments : JoVE2014

Transgenic rodent assay for quantifying male germ cell mutant frequency.

Jason M O'Brien, Marc A Beal, John D Gingerich, Lynda Soper, George R Douglas, Carole L Yauk, Francesco Marchetti

Abstract readVideo-Audio Media
In one paragraph

Article in Journal of visualized experiments : JoVE, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
3.3field-weighted citation impact, top 8% 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, 28 citations in OpenAlex.

  1. Article
  2. Article
  3. Comprehensive genotoxicity and carcinogenicity assessment of molnupiravir.Toxicological sciences : an official journal of the Society of Toxicology · 2024
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Benzo(a)pyrene Is Mutagenic in Mouse Spermatogonial Stem Cells and Dividing Spermatogonia.Toxicological sciences : an official journal of the Society of Toxicology · 2016
    Article
  9. Article
  10. 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

7 authors at 1 institution in 1 country.

Jason M O'BrienEnvironmental Health Science and Research Bureau, Health Canada, Environmental Health Centre.
Marc A BealEnvironmental Health Science and Research Bureau, Health Canada, Environmental Health Centre.
John D GingerichEnvironmental Health Science and Research Bureau, Health Canada, Environmental Health Centre.
Lynda SoperEnvironmental Health Science and Research Bureau, Health Canada, Environmental Health Centre.
George R DouglasEnvironmental Health Science and Research Bureau, Health Canada, Environmental Health Centre.
Carole L YaukEnvironmental Health Science and Research Bureau, Health Canada, Environmental Health Centre.
Francesco MarchettiEnvironmental Health Science and Research Bureau, Health Canada, Environmental Health Centre; francesco.marchetti@hc-sc.gc.ca.
Health Canada · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

De novo mutations arise mostly in the male germline and may contribute to adverse health outcomes in subsequent generations. Traditional methods for assessing the induction of germ cell mutations require the use of large numbers of animals, making them impractical. As such, germ cell mutagenicity is rarely assessed during chemical testing and risk assessment. Herein, we describe an in vivo male germ cell mutation assay using a transgenic rodent model that is based on a recently approved Organisation for Economic Co-operation and Development (OECD) test guideline. This method uses an in vitro positive selection assay to measure in vivo mutations induced in a transgenic λgt10 vector bearing a reporter gene directly in the germ cells of exposed males. We further describe how the detection of mutations in the transgene recovered from germ cells can be used to characterize the stage-specific sensitivity of the various spermatogenic cell types to mutagen exposure by controlling three experimental parameters: the duration of exposure (administration time), the time between exposure and sample collection (sampling time), and the cell population collected for analysis. Because a large number of germ cells can be assayed from a single male, this method has superior sensitivity compared with traditional methods, requires fewer animals and therefore much less time and resources.

Indexed as

Germ-Line MutationMutation RateAnimalsDNA Mutational AnalysisGenes, ReporterMaleMiceMice, TransgenicSpermatozoa

Identifiers

PMID25145276
PMCPMC4692354
OpenAlexW1992199053

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.