Evidence map›Paper›PMID 17540017›Full record

ArticleBMC developmental biology2007

Validation of reference genes for quantitative RT-PCR studies in porcine oocytes and preimplantation embryos.

Ewart W Kuijk, Leonie du Puy, Helena T A van Tol, Henk P Haagsman, Ben Colenbrander, Bernard A J Roelen

Open access · hybridAbstract readValidation Study
In one paragraph

Article in BMC developmental biology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
5.0field-weighted citation impact, top 4% 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

56 citing papers in PubMed, 158 citations in OpenAlex.

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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 at 1 institution in 1 country.

Ewart W KuijkDepartment of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 104, Utrecht, The Netherlands. e.w.kuijk@vet.uu.nl <e.w.kuijk@vet.uu.nl>
Leonie du Puy
Helena T A van Tol
Henk P Haagsman
Ben Colenbrander
Bernard A J Roelen
Utrecht University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn the developing embryo, total RNA abundance fluctuates caused by functional RNA degradation and zygotic genome activation. These variations in the transcriptome in early development complicate the choice of good reference genes for gene expression studies by quantitative real time polymerase chain reaction.

resultsIn order to identify stably expressed genes for normalisation of quantitative data, within early stages of development, transcription levels were examined of 7 frequently used reference genes (B2M, BACT, GAPDH, H2A, PGK1, SI8, and UBC) at different stages of early porcine embryonic development (germinal vesicle, metaphase-2, 2-cell, 4-cell, early blastocyst, expanded blastocyst). Analysis of transcription profiling by geNorm software revealed that GAPDH, PGK1, S18, and UBC showed high stability in early porcine embryonic development, while transcription levels of B2M, BACT, and H2A were highly regulated.

conclusionGood reference genes that reflect total RNA content were identified in early embryonic development from oocyte to blastocyst. A selection of either GAPDH or PGK1, together with ribosomal protein S18 (S18), and UBC is proposed as reference genes, but the use of B2M, BACT, or H2A is discouraged.

Indexed as

GenesAnimalsBlastocystEmbryo Culture TechniquesFemaleGene Expression ProfilingGene Expression Regulation, DevelopmentalGenes, DevelopmentalOocytesReference StandardsReverse Transcriptase Polymerase Chain ReactionRNASwineRNA

Identifiers

PMID17540017
PMCPMC1896162
OpenAlexW2088235456

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.