Evidence map›Paper›PMID 24553117›Full record

ArticleCell cycle (Georgetown, Tex.)2014

Kinetochore microtubule establishment is defective in oocytes from aged mice.

Maria Shomper, Christina Lappa, Greg FitzHarris

Open access · bronzeAbstract read
In one paragraph

Article in Cell cycle (Georgetown, Tex.), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
5.8field-weighted citation impact, top 3% 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

54 citing papers in PubMed, 93 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. The Reproductive Lifespan of Ovarian Follicle.Reproductive sciences (Thousand Oaks, Calif.) · 2024
    Review
  8. Article
  9. Article
  10. Twenty years of merotelic kinetochore attachments: a historical perspective.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2023
    Review
  11. Article
  12. The large cytoplasmic volume of oocyte.The Journal of reproduction and development · 2023
    Review
  13. Article
  14. Article
  15. Chromosome Segregation in the Oocyte: What Goes Wrong during Aging.International journal of molecular sciences · 2022
    Review
  16. Review
  17. Mechanisms of ovarian aging.Reproduction (Cambridge, England) · 2021
    Review
  18. Review
  19. Article
  20. Molecular basis of reproductive senescence: insights from model organisms.Journal of assisted reproduction and genetics · 2021
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Maria ShomperCell and Developmental Biology; University College London; London, UK.
Christina LappaCell and Developmental Biology; University College London; London, UK.
Greg FitzHarrisCell and Developmental Biology; University College London; London, UK.
MRC Laboratory for Molecular Cell Biology · GBUniversity College London · GB

Funding

Medical Research Council MR/J00734X/1
6 · The paper itself

Abstract

Errors in chromosome segregation in mammalian oocytes increase in number with advancing maternal age, and are a major cause of pregnancy loss. Why chromosome segregation errors are more common in oocytes from older females remains poorly understood. In mitosis, accurate chromosome segregation is enabled by attachment of kinetochores to microtubules from appropriate spindle poles, and erroneous attachments increase the likelihood of mis-segregation. Whether attachment errors are responsible for age-related oocyte aneuploidy is unknown. Here we report that oocytes from naturally aged mice exhibit substantially increased chromosome misalignment, and fewer kinetochore pairs that make stable end-on attachments to the appropriate spindle poles compared with younger oocytes. The profile of mis-attachments exhibited is consistent with the types of chromosome segregation error observed in aged oocytes. Loss of chromosome cohesion, which is a feature of oocytes from older females, causes altered kinetochore geometry in meiosis-I. However, this has only a minor impact upon MT attachment, indicating that cohesion loss is not the primary cause of aneuploidy in meiosis-I. In meiosis-II, on the other hand, age-related cohesion loss plays a direct role in errors, since prematurely individualized sister chromatids misalign and misattach to spindle MTs. Thus, whereas cohesion loss leading to precocious sister chromatid separation is a direct cause of errors in meiosis-II, cohesion loss plays a more minor role in the etiology of aneuploidy in meiosis-I. Our data introduce altered MT-kinetochore interactions as a lesion that explains aneuploidy in meiosis-I in older females.

Indexed as

AgingAneuploidyAnimalsChromatidsFemaleHumansKinetochoresMeiosisMiceMicrotubulesOocytesSpindle Apparatusaneuploidychromosome segregationcohesinkinetochoreoocyte agingspindle

Identifiers

PMID24553117
PMCPMC4013167
OpenAlexW2027555358

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.