Evidence map›Paper›PMID 18776144›Full record

ArticleDevelopment (Cambridge, England)2008

Luteinizing hormone causes MAP kinase-dependent phosphorylation and closure of connexin 43 gap junctions in mouse ovarian follicles: one of two paths to meiotic resumption.

Rachael P Norris, Marina Freudzon, Lisa M Mehlmann, Ann E Cowan, Alexander M Simon, David L Paul, Paul D Lampe, Laurinda A Jaffe

Open access · greenAbstract read
In one paragraph

Article in Development (Cambridge, England), 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 123 papers.

0numbers the graph read from it
0cells of the map it votes in
123citing papers in PubMed
6.1field-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

123 citing papers in PubMed, 254 citations in OpenAlex.

  1. Molecular mechanisms of folliculogenesis and oogenesis.Systems biology in reproductive medicine · 2026
    Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Protein Kinase C Regulates Meiosis in Mammalian Oocytes.BioEssays : news and reviews in molecular, cellular and developmental biology · 2026
    Review
  9. Intercellular diffusion of cyclic nucleotides followed by gap junction closure restarts meiosis in mouse preovulatory follicles.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Electro-Metabolic Coupling of Cumulus-Oocyte Complex.International journal of molecular sciences · 2024
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. The signal that stimulates mammalian embryo development.Frontiers in cell and developmental biology · 2024
    Review

63 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

8 authors at 2 institutions in 1 country.

Rachael P NorrisDepartment of Cell Biology, University of Connecticut Health Center, Farmington, CT 06032, USA.
Marina Freudzon
Lisa M Mehlmann
Ann E Cowan
Alexander M Simon
David L Paul
Paul D Lampe
Laurinda A Jaffe
Fred Hutch Cancer Center · USUConn Health · US

Funding

POLARITY IN NETWORKS AND PATHWAYS(RMI)U54RR022232 · NCRR · UNIVERSITY OF CONNECTICUT SCH OF MED/DNT · PI LOEW, LESLIE M · 2005 to 2009
$12.9M
PHOSPHORYLATION OF GAP JUNCTION PROTEINSR01GM055632 · NIGMS · FRED HUTCHINSON CANCER RESEARCH CENTER · PI LAMPE, PAUL D. · 1997 to 2017
$6.1M
SIGNAL TRANSDUCTIONS AT FERTILIZATIONR01HD014939 · NICHD · UNIVERSITY OF CONNECTICUT SCH OF MED/DNT · PI JAFFE, LAURINDA A. · 1985 to 2012
$2.8M
Gap Junction Mediated Signaling and Vascular ResponsesR01HL064232 · NHLBI · UNIVERSITY OF ARIZONA · PI SIMON, ALEXANDER M · 2001 to 2010
$2.2M
NCRR NIH HHS U54 RR022232NHLBI NIH HHS R01 HL064232NICHD NIH HHS R01 HD014939NIGMS NIH HHS R01 GM055632
6 · The paper itself

Abstract

Luteinizing hormone (LH) acts on ovarian follicles to reinitiate meiosis in prophase-arrested mammalian oocytes, and this has been proposed to occur by interruption of a meioisis-inhibitory signal that is transmitted through gap junctions into the oocyte from the somatic cells that surround it. To investigate this idea, we microinjected fluorescent tracers into live antral follicle-enclosed mouse oocytes, and we demonstrate for the first time that LH causes a decrease in the gap junction permeability between the somatic cells, prior to nuclear envelope breakdown (NEBD). The decreased permeability results from the MAP kinase-dependent phosphorylation of connexin 43 on serines 255, 262 and 279/282. We then tested whether the inhibition of gap junction communication was sufficient and necessary for the reinitiation of meiosis. Inhibitors that reduced gap junction permeability caused NEBD, but an inhibitor of MAP kinase activation that blocked gap junction closure in response to LH did not prevent NEBD. Thus, both MAP kinase-dependent gap junction closure and another redundant pathway function in parallel to ensure that meiosis resumes in response to LH.

Indexed as

AnimalsCell Membrane PermeabilityConnexin 43Cumulus CellsFemaleGap JunctionsGranulosa CellsLuteinizing HormoneMeiosisMiceMitogen-Activated Protein Kinase KinasesOocytesOvarian FolliclePhosphorylationSerineTissue Culture TechniquesConnexin 43Luteinizing HormoneMitogen-Activated Protein Kinase KinasesSerine

Identifiers

PMID18776144
PMCPMC2572224
OpenAlexW2099987623

What OpenQuestion holds

Textmetadata
LicenceTDM
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.