Evidence map›Paper›PMID 8603922›Full record

ArticleThe Journal of cell biology1996

A cell cycle-associated change in Ca2+ releasing activity leads to the generation of Ca2+ transients in mouse embryos during the first mitotic division.

T Kono, K T Jones, A Bos-Mikich, D G Whittingham, J Carroll

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in The Journal of cell biology, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.9field-weighted citation impact, top 13% 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

23 citing papers in PubMed, 101 citations in OpenAlex.

  1. Targeting EGFR-REM2-CaCellular and molecular life sciences : CMLS · 2025
    Article
  2. Article
  3. CaCold Spring Harbor perspectives in biology · 2019
    Review
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  13. Review
  14. Calcium signalling in early embryos.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2008
    Review
  15. Article
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  17. Review
  18. Article
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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

5 authors at 1 institution in 1 country.

T KonoMedical Research Council Experimental Embryology and Teratology Unit, St. George's Hospital Medical School, London, England.
K T Jones
A Bos-Mikich
D G Whittingham
J Carroll
St George's Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We have used Ca2+-sensitive fluorescent dyes to monitor intracellular Ca2+ during mitosis in one-cell mouse embryos. We find that fertilized embryos generate Ca2+ transients at nuclear envelope breakdown (NEBD) and during mitosis. In addition, fertilized embryos arrested in metaphase using colcemid continue to generate Ca2+ transients. In contrast, parthenogenetic embryos produced by a 2-h exposure to strontium containing medium do not generate detectable Ca2+ transients at NEBD or in mitosis. However, when parthenogenetic embryos are cultured continuously in strontium containing medium Ca2+ transients are detected in mitosis but not in interphase. This suggests that mitotic Ca2+ transients are detected in the presence of an appropriate stimulus such as fertilization or strontium. The Ca2+ transient detected in fertilized embryos is not necessary for inducing NEBD since parthenogenetic embryos undergo nuclear envelope breakdown (NEBD). Also the first sign that NEBD is imminent occurs several minutes before the Ca2+ transient. The Ca2+ transient at NEBD appears to be associated with the nucleus since nuclear transfer experiments show that the presence of a karyoplast from a fertilized embryo is essential. Finally, we show that the intracellular Ca2+ chelator Bapta inhibits NEBD in fertilized and parthenogenetic embryos in a dose-dependent manner. These studies show that during mitosis there is an endogenous increase in Ca2+ releasing activity that leads to the generation of Ca2+ transients specifically during mitosis. The ability of Ca2+ buffers to inhibit NEBD regardless of the presence of global Ca2+ transients suggests that the underlying cell cycle-associated Ca2+ releasing activity may take the form of localized Ca2+ transients.

Indexed as

AnimalsCalciumChelating AgentsEgtazic AcidEmbryo, MammalianFemaleFertilizationMaleMiceMice, Inbred C57BLMice, Inbred CBAMitosisModels, BiologicalNuclear EnvelopeOocytesParthenogenesis1,2-bis(2-aminophenoxy)ethane N,N,N',N'-tetraacetic acid acetoxymethyl esterCalciumChelating AgentsEgtazic Acid

Identifiers

PMID8603922
PMCPMC2120737
OpenAlexW2171392147

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.