Evidence map›Paper›PMID 9192653›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1997

Impaired fertility in mice deficient for the testicular germ-cell protease PC4.

M Mbikay, H Tadros, N Ishida, C P Lerner, E De Lamirande, A Chen, M El-Alfy, Y Clermont, N G Seidah, M Chrétien and 2 more

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
15.1field-weighted citation impact, top 1% 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

46 citing papers in PubMed, 156 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Review
  5. Review
  6. Article
  7. Duplications in 19p13.3 are associated with male infertility.Journal of assisted reproduction and genetics · 2019
    Article
  8. Development of Novel DNA-Encoded PCSK9 Monoclonal Antibodies as Lipid-Lowering Therapeutics.Molecular therapy : the journal of the American Society of Gene Therapy · 2019
    Article
  9. Review
  10. The Acrosomal Matrix.Advances in anatomy, embryology, and cell biology · 2016
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Mouse models in male fertility research.Asian journal of andrology · 2011
    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

12 authors at 4 institutions in 2 countries.

M MbikayLaboratory of Molecular, Clinical Research Institute of Montreal, University of Montreal, Montreal QC, Canada H2W 1R7. mbikaym@ircm.umontreal.ca
H Tadros
N Ishida
C P Lerner
E De Lamirande
A Chen
M El-Alfy
Y Clermont
N G Seidah
M Chrétien
C Gagnon
E M Simpson
Université de Montréal · CAMcGill University · CARoyal Victoria Hospital · CAClinical Research Institute · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

PC4 is a member of the proprotein convertase family of serine proteases implicated in the processing of a variety of polypeptides including prohormones, proneuropeptides, and cell surface proteins. In rodents, PC4 transcripts have been detected in spermatocytes and round spermatids exclusively, suggesting a reproductive function for this enzyme. In an effort to elucidate this function, we have disrupted its locus (Pcsk4) by homologous recombination in embryonic stem cells and have produced mice carrying the mutation. In intercrosses of heterozygous mutant mice, there was low transmission of the mutant Pcsk4 allele to the progeny, resulting in lower than expected incidence of heterozygosity and null homozygosity. The in vivo fertility of homozygous mutant males was severely impaired in the absence of any evident spermatogenic abnormality. In vitro, the fertilizing ability of Pcsk4 null spermatozoa was also found to be significantly reduced. Moreover, eggs fertilized by these spermatozoa failed to grow to the blastocyst stage. These results suggest that PC4 in the male may be important for achieving fertilization and for supporting early embryonic development in mice.

Indexed as

AnimalsFemaleFertilityHomozygoteMaleMiceMice, Mutant StrainsProprotein ConvertasesRecombination, GeneticSerine EndopeptidasesSpermatozoaSubtilisinsTestisPcsk4 protein, mouseProprotein ConvertasesSerine EndopeptidasesSubtilisins

Identifiers

PMID9192653
PMCPMC21246
OpenAlexW2085545359

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.