Evidence map›Paper›PMID 27187374›Full record

ArticleInternational journal of molecular sciences2016

A Comparison of Fresh Frozen vs. Formalin-Fixed, Paraffin-Embedded Specimens of Canine Mammary Tumors via Branched-DNA Assay.

Florenza Lüder Ripoli, Annika Mohr, Susanne Conradine Hammer, Saskia Willenbrock, Marion Hewicker-Trautwein, Silvia Hennecke, Hugo Murua Escobar, Ingo Nolte

Open access · goldAbstract readComparative Study
In one paragraph

Article in International journal of molecular sciences, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 2 pooled it
2.8field-weighted citation impact, top 10% 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

28 citing papers in PubMed, 2 syntheses or guidelines pooled it, 39 citations in OpenAlex.

  1. Pooled it
  2. World journal of gastroenterology · 2017
    Pooled it
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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

8 authors at 3 institutions in 1 country.

Florenza Lüder RipoliSmall Animal Clinic, University of Veterinary Medicine Hannover, Hannover D-30559, Germany. florenza@ripoli.com.br.
Annika MohrSmall Animal Clinic, University of Veterinary Medicine Hannover, Hannover D-30559, Germany. annika.mohr@yahoo.de.
Susanne Conradine HammerSmall Animal Clinic, University of Veterinary Medicine Hannover, Hannover D-30559, Germany. Susanne.Conradine.Hammer@tiho-hannover.de.
Saskia WillenbrockSmall Animal Clinic, University of Veterinary Medicine Hannover, Hannover D-30559, Germany. Saskia.willenbrock@preclinics.com.
Marion Hewicker-TrautweinDepartment of Pathology, University of Veterinary Medicine Hannover, Hannover D-30559, Germany. marion.hewicker-trautwein@tiho-hannover.de.
Silvia HenneckeInstitute of Veterinary Medicine, Georg-August-University Göttingen, Göttingen D-37077, Germany. shennec@gwdg.de.
Hugo Murua EscobarHematology Oncology and Palliative Medicine, Clinic III, University of Rostock, Rostock D-18057, Germany. hugo.murua.escobar@med.uni-rostock.de.
Ingo NolteSmall Animal Clinic, University of Veterinary Medicine Hannover, Hannover D-30559, Germany. ingo.nolte@tiho-hannover.de.
University of Veterinary Medicine Hannover, Foundation · DEUniversity of Rostock · DEUniversity of Göttingen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mammary neoplasms are the tumors most affecting female dogs and women. Formalin-fixed, paraffin-embedded (FFPE) tissues are an invaluable source of archived biological material. Fresh frozen (FF) tissue is considered ideal for gene expression analysis. However, strategies based on FFPE material offer several advantages. Branched-DNA assays permit a reliable and fast workflow when analyzing gene expression. The aim of this study was to assess the comparability of the branched-DNA assay when analyzing certain gene expression patterns between FF and FFPE samples in canine mammary tumors. RNA was isolated from 109 FFPE samples and from 93 FF samples of different canine mammary tissues. Sixteen (16) target genes (Tp53; Myc; HMGA1; Pik3ca; Mcl1; MAPK3; FOXO3; PTEN; GATA4; PFDN5; HMGB1; MAPK1; BRCA2; BRCA1; HMGA2; and Her2) were analyzed via branched-DNA assay (b-DNA). ACTB, GAPDH, and HPRT1 were used as data normalizers. Overall, the relative gene expression of the two different origins of samples showed an agreement of 63%. Still, care should be taken, as FFPE specimens showed lower expression of the analyzed targets when compared to FF samples. The fact that the gene expression in FFPE proved to be lower than in FF specimens is likely to have been caused by the effect of storage time. ACTB had the best performance as a data normalizer.

Indexed as

AnimalsBiomarkers, TumorCryopreservationDogsFemaleMammary Neoplasms, AnimalParaffin EmbeddingPolymerase Chain ReactionTissue FixationBiomarkers, Tumorbranched-DNA assaycanine mammary tumorformalin-fixed, paraffin-embedded specimensfresh frozen tissuegene expressionRNA

Identifiers

PMID27187374
PMCPMC4881546
OpenAlexW2380421912

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.