Evidence map›Paper›PMID 24687878›Full record

ArticleJournal of assisted reproduction and genetics2014

Syncytin-1 and its receptor is present in human gametes.

B Bjerregaard, J G Lemmen, M R Petersen, E Østrup, L H Iversen, K Almstrup, L-I Larsson, S Ziebe

Open access · bronzeAbstract read
In one paragraph

Article in Journal of assisted reproduction and genetics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

20 citing papers in PubMed, 38 citations in OpenAlex.

  1. Article
  2. Article
  3. Syncytin-1, syncytin-2 and suppressyn in human health and disease.Journal of molecular medicine (Berlin, Germany) · 2023
    Review
  4. Review
  5. Article
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  8. Tumor Hybrid Cells: Nature and Biological Significance.Frontiers in cell and developmental biology · 2022
    Review
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Review
  15. Male infertility-related molecules involved in sperm-oocyte fusion.The Journal of reproduction and development · 2017
    Review
  16. Article
  17. Review
  18. Review
  19. Article
  20. Review
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 5 institutions in 2 countries.

B BjerregaardFaculty of Life Science, University of Copenhagen, Copenhagen, Denmark.
J G Lemmen
M R Petersen
E Østrup
L H Iversen
K Almstrup
L-I Larsson
S Ziebe
Rigshospitalet · DKCopenhagen University Hospital · DKHvidovre Hospital · DKUniversity of Copenhagen · DKUniversity of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

main purpose and research questionTo determine whether the true fusogen Syncytin-1 and its receptor (ASCT-2) is present in human gametes using qRT-PCR, immunoblotting and immunofluorescence.

methodsDonated oocytes and spermatozoa, originating from a fertility center in tertiary referral university hospital, underwent qRT-PCR, immunoblotting and immunofluorescence analyzes.

resultsQuantitative RT-PCR of sperm samples from sperm donors showed that syncytin-1 is present in all samples, however, protein levels varied between donors. Syncytin-1 immunoreactivity predominates in the sperm head and around the equatorial segment. The receptor ASCT-2 is expressed in the acrosomal region and in the sperm tail. Moreover, ASCT-2, but not syncytin-1, is expressed in oocytes and the mRNA level increases with increasing maturity of the oocytes.

conclusionsSyncytin and its receptor are present in human gametes and localization and temporal appearance is consistent with a possible role in fusion between oocyte and sperm.

Indexed as

AdultAmino Acid Transport System ASCFemaleFertilizationGene Expression Regulation, DevelopmentalGene Products, envHumansMaleOocytesPregnancy ProteinsSpermatozoaSperm HeadAmino Acid Transport System ASCGene Products, envPregnancy ProteinsSLC1A4 protein, humansyncytin

Identifiers

PMID24687878
PMCPMC4016377
OpenAlexW2014666851

What OpenQuestion holds

Textmetadata
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.