Evidence map›Paper›PMID 26483387›Full record

ArticleJournal of cell science2015

CaV3.2 T-type channels mediate Ca²⁺ entry during oocyte maturation and following fertilization.

Miranda L Bernhardt, Yingpei Zhang, Christian F Erxleben, Elizabeth Padilla-Banks, Caitlin E McDonough, Yi-Liang Miao, David L Armstrong, Carmen J Williams

Open access · hybridAbstract read
In one paragraph

Article in Journal of cell science, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
6.0field-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

32 citing papers in PubMed, 47 citations in OpenAlex.

  1. The TRPV3 channel is a mediator of zinc influx and homeostasis in murine oocytes.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  2. The signal that stimulates mammalian embryo development.Frontiers in cell and developmental biology · 2024
    Review
  3. Review
  4. Essential role of MgCell reports · 2023
    Article
  5. Article
  6. Article
  7. [Mibefradil improves skeletal muscle mass, function and structure in obese mice].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2022
    Article
  8. Electrophysiology of Human Gametes: A Systematic Review.The world journal of men's health · 2022
    Article
  9. Article
  10. Breeding of CaScientific reports · 2021
    Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. CaCold Spring Harbor perspectives in biology · 2019
    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 3 institutions in 2 countries.

Miranda L BernhardtReproductive and Developmental Biology Laboratory, National Institutes of Health, Research Triangle Park, NC 27709, USA.
Yingpei ZhangReproductive and Developmental Biology Laboratory, National Institutes of Health, Research Triangle Park, NC 27709, USA.
Christian F ErxlebenNeurobiology Laboratory, National Institutes of Health, Research Triangle Park, NC 27709, USA.
Elizabeth Padilla-BanksReproductive and Developmental Biology Laboratory, National Institutes of Health, Research Triangle Park, NC 27709, USA.
Caitlin E McDonoughReproductive and Developmental Biology Laboratory, National Institutes of Health, Research Triangle Park, NC 27709, USA.
Yi-Liang MiaoKey Laboratory of Animal Genetics, Breeding, and Reproduction of Ministry of Education, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
David L ArmstrongNeurobiology Laboratory, National Institutes of Health, Research Triangle Park, NC 27709, USA.
Carmen J WilliamsReproductive and Developmental Biology Laboratory, National Institutes of Health, Research Triangle Park, NC 27709, USA williamsc5@niehs.nih.gov.
National Institutes of Health · USResearch Triangle Park Foundation · USHuazhong Agricultural University · CN

Funding

Environmental influence on gametes and embryosZIAES102985 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI WILLIAMS, CARMEN · 2011 to 2025
$20.9M
Intramural NIH HHS ZIA ES102985PHS HHS 1ZIAES102985
6 · The paper itself

Abstract

Initiation of mouse embryonic development depends upon a series of fertilization-induced rises in intracellular Ca(2+). Complete egg activation requires influx of extracellular Ca(2+); however, the channels that mediate this influx remain unknown. Here, we tested whether the α1 subunit of the T-type channel CaV3.2, encoded by Cacna1h, mediates Ca(2+) entry into oocytes. We show that mouse eggs express a robust voltage-activated Ca(2+) current that is completely absent in Cacna1h(-/-) eggs. Cacna1h(-/-) females have reduced litter sizes, and careful analysis of Ca(2+) oscillation patterns in Cacna1h(-/-) eggs following in vitro fertilization (IVF) revealed reductions in first transient length and oscillation persistence. Total and endoplasmic reticulum (ER) Ca(2+) stores were also reduced in Cacna1h(-/-) eggs. Pharmacological inhibition of CaV3.2 in wild-type CF-1 strain eggs using mibefradil or pimozide reduced Ca(2+) store accumulation during oocyte maturation and reduced Ca(2+) oscillation persistence, frequency and number following IVF. Overall, these data show that CaV3.2 T-type channels have prev8iously unrecognized roles in supporting the meiotic-maturation-associated increase in ER Ca(2+) stores and mediating Ca(2+) influx required for the activation of development.

Indexed as

AnimalsCalciumCalcium Channels, T-TypeCalcium SignalingEndoplasmic ReticulumFemaleFertilizationMiceMice, KnockoutOocytesCacna1h protein, mouseCalciumCalcium Channels, T-TypeCa2+Egg activationFertilizationMeiosisOocyteT-type channel

Identifiers

PMID26483387
PMCPMC4712821
OpenAlexW1771953575

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.