Evidence map›Paper›PMID 8643592›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1996

Targeted disruption of the mZP3 gene results in production of eggs lacking a zona pellucida and infertility in female mice.

C Liu, E S Litscher, S Mortillo, Y Sakai, R A Kinloch, C L Stewart, P M Wassarman

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed, 1 pooled it
4.5field-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

81 citing papers in PubMed, 1 synthesis or guideline pooled it, 263 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Female fertility and the mammalian egg'sHistology and histopathology · 2024
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Frontiers in genetics · 2024
    Article
  18. Article
  19. A heterozygousiScience · 2023
    Article
  20. Article

21 more citing papers are in PubMed but not listed here.

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

7 authors at 1 institution in 1 country.

C LiuRoche Institute of Molecular Biology, Roche Research Center, Nutley, NJ 07110, USA.
E S Litscher
S Mortillo
Y Sakai
R A Kinloch
C L Stewart
P M Wassarman
La Roche College · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mammalian eggs are surrounded by a thick extracellular coat, the zona pellucida, that plays important roles during early development. The mouse egg zona pellucida is constructed of three glycoproteins, called mZP1, mZP2, and mZP3. The gene encoding mZP3 is expressed only by growing oocytes during a 2- to 3-week period of oogenesis. Here, the mZP3 gene was disrupted by targeted mutagenesis using homologous recombination in mouse embryonic stem cells. Viable female mice homozygous for the mutated mZP3 allele (mZP3-/-) were obtained. These mice are indistinguishable in appearance from wild-type (mZP3+/+) and heterozygous (mZP3+/-) littermates. However, although ovaries of juvenile and adult mZP3-/- females possess growing and fully grown oocytes, the oocytes completely lack a zona pellucida. Consistent with this observation, eggs recovered from oviducts of superovulated, adult mZP3-/- females also lack a zona pellucida. Thus far, mZP3-/- females mated with wild-type males have failed to become pregnant.

Indexed as

Receptors, Cell SurfaceAnimalsBase SequenceDNA PrimersEgg ProteinsFemaleGene ExpressionHeterozygoteHomozygoteInfertility, FemaleMembrane GlycoproteinsMiceMicroscopy, ElectronMolecular Sequence DataMutagenesisOocytesDNA PrimersEgg ProteinsMembrane GlycoproteinsReceptors, Cell SurfaceZona Pellucida Glycoproteins

Identifiers

PMID8643592
PMCPMC39263
OpenAlexW2082827470

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.