Evidence map›Paper›PMID 18047664›Full record

ArticleBMC developmental biology2007

The oxidative stress adaptor p66Shc is required for permanent embryo arrest in vitro.

Laura A Favetta, Pavneesh Madan, Gabriela F Mastromonaco, Elizabeth J St John, W Allan King, Dean H Betts

Open access · hybridAbstract read
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 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
4.2field-weighted citation impact, top 7% 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

21 citing papers in PubMed, 62 citations in OpenAlex.

  1. Review
  2. Review
  3. Review
  4. Review
  5. Review
  6. Senescence and Apoptosis DuringFrontiers in cell and developmental biology · 2020
    Review
  7. Review
  8. Article
  9. p66Molecular and cellular biology · 2016
    Article
  10. Article
  11. Review
  12. The p66Shc adapter protein regulates the morphogenesis and epithelial maturation of fetal mouse lungs.American journal of physiology. Lung cellular and molecular physiology · 2014
    Article
  13. Article
  14. Article
  15. The Effects of ISM1 Medium on Embryo Quality and Outcomes of IVF/ICSI Cycles.International journal of fertility & sterility · 2013
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

6 authors at 1 institution in 1 country.

Laura A FavettaDepartment of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1, Canada. lfavetta@uoguelph.ca
Pavneesh Madan
Gabriela F Mastromonaco
Elizabeth J St John
W Allan King
Dean H Betts
University of Guelph · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundExcessive developmental failure occurs during the first week of in vitro embryo development due to elevated levels of cell death and arrest. We hypothesize that permanently arrested embryos enter a stress-induced "senescence-like" state that is dependent on the oxidative stress-adaptor and lifespan determinant protein p66Shc. The aim of this study was to selectively diminish p66Shc gene expression in bovine oocytes and embryos using post-transcriptional gene silencing by RNA-mediated interference to study the effects of p66Shc knockdown on in vitro fertilized bovine embryos.

resultsApproximately 12,000-24,000 short hairpin (sh)RNAi molecules specific for p66Shc were microinjected into bovine germinal vesicle stage oocytes or zygotes. Experiments were comprised of a control group undergoing IVF alone and two groups microinjected with and without p66Shc shRNAi molecules prior to IVF. The amount of p66Shc mRNA quantified by Real Time PCR was significantly (P < 0.001) lowered upon p66Shc shRNAi microinjection. This reduction was selective for p66Shc mRNA, as both histone H2a and p53 mRNA levels were not altered. The relative signal strength of p66Shc immuno-fluorescence revealed a significant reduction in the number of pixels for p66Shc shRNAi microinjected groups compared to controls (P < 0.05). A significant decrease (P < 0.001) in the incidence of arrested embryos upon p66Shc shRNAi microinjection was detected compared to IVF and microinjected controls along with significant reductions (P < 0.001) in both cleavage divisions and blastocyst development. No significant differences in p66Shc mRNA levels (P = 0.314) were observed among the three groups at the blastocyst stage.

conclusionThese results show that p66Shc is involved in the regulation of embryo development specifically in mediating early cleavage arrest and facilitating development to the blastocyst stage for in vitro produced bovine embryos.

Indexed as

RNA InterferenceAdaptor Proteins, Signal TransducingAnimalsBlastocystCattleCleavage Stage, OvumEmbryo Culture TechniquesEmbryo, MammalianFertilization in VitroFluorescent Antibody Technique, IndirectGene Expression Regulation, DevelopmentalMicroinjectionsMicroscopy, ConfocalOxidative StressReactive Oxygen SpeciesReverse Transcriptase Polymerase Chain ReactionAdaptor Proteins, Signal TransducingReactive Oxygen SpeciesRNA, Double-StrandedShc Signaling Adaptor Proteins

Identifiers

PMID18047664
PMCPMC2220003
OpenAlexW2089124271

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.