Evidence map›Paper›PMID 19858197›Full record

ArticleThe Journal of biological chemistry2009

Pulsatile and sustained gonadotropin-releasing hormone (GnRH) receptor signaling: does the Ca2+/NFAT signaling pathway decode GnRH pulse frequency?

Stephen P Armstrong, Christopher J Caunt, Robert C Fowkes, Krasimira Tsaneva-Atanasova, Craig A McArdle

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
5.7field-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

30 citing papers in PubMed, 56 citations in OpenAlex.

  1. Review
  2. Article
  3. Mathematical models in GnRH research.Journal of neuroendocrinology · 2022
    Review
  4. A role for NPY-NPY2R signaling in albuminuric kidney disease.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  5. Article
  6. Article
  7. GnRH-A Key Regulator of FSH.Endocrinology · 2019
    Review
  8. Review
  9. Review
  10. Mathematical modeling of gonadotropin-releasing hormone signaling.Molecular and cellular endocrinology · 2017
    Review
  11. Article
  12. Article
  13. Article
  14. Band-pass processing in a GPCR signaling pathway selects for NFAT transcription factor activation.Integrative biology : quantitative biosciences from nano to macro · 2015
    Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article
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 2 institutions in 2 countries.

Stephen P ArmstrongLaboratories for Integrative Neuroscience and Endocrinology, Department of Clinical Science at South Bristol, University of Bristol, Whitson Street, Bristol BS1 3NY.
Christopher J Caunt
Robert C Fowkes
Krasimira Tsaneva-Atanasova
Craig A McArdle
University of Bristol · GBRoyal College of Physicians and Surgeons of Canada · CA

Funding

Wellcome TrustWellcome Trust 078407Wellcome Trust 084588
6 · The paper itself

Abstract

Gonadotropin-releasing hormone (GnRH) acts via 7 transmembrane region receptors on gonadotrophs to stimulate synthesis and secretion of the luteinizing hormone and follicle-stimulating hormone. It is secreted in pulses, and its effects depend on pulse frequency, but decoding mechanisms are unknown. Here we have used (nuclear factor of activated T-cells 2 (NFAT2)-emerald fluorescent protein) to monitor GnRH signaling. Increasing [Ca(2+)](i) causes calmodulin/calcineurin-dependent nuclear NFAT translocation, a response involving proteins (calmodulins and NFATs) that decode frequency in other systems. Using live cell imaging, pulsatile GnRH caused dose- and frequency-dependent increases in nuclear NFAT2-emerald fluorescent protein, and at low frequency, translocation simply tracked GnRH exposure (albeit with slower kinetics). At high frequency (30-min intervals), failure to return to basal conditions before repeat stimulation caused integrative tracking, illustrating how the relative dynamics of up- and downstream signals can increase efficiency of GnRH action. Mathematical modeling predicted desensitization of GnRH effects on [Ca(2+)](i) and that desensitization would increase with dose, frequency, and receptor number, but no such desensitization was seen in HeLa and/or LbetaT2 cells possibly because pulsatile GnRH did not reduce receptor expression (measured by immunofluorescence). GnRH also caused dose- and frequency-dependent activation of alphaGSU, luteinizing hormone beta, and follicle-stimulating hormone beta luciferase reporters, effects that were blocked by calcineurin inhibition. Pulsatile GnRH also activated an NFAT-responsive luciferase reporter, but this response was directly related to cumulative pulse duration. This together with the lack of desensitization of translocation responses suggests that NFAT may mediate GnRH action but is not a genuine decoder of GnRH pulse frequency.

Indexed as

Models, BiologicalActive Transport, Cell NucleusAnimalsBiological ClocksCalcineurinCalcium SignalingCalmodulinCell NucleusDose-Response Relationship, DrugGene Expression RegulationGonadotropin-Releasing HormoneHeLa CellsHumansMiceNFATC Transcription FactorsReceptors, LHRHCalcineurinCalmodulinGNRHR protein, humanGonadotropin-Releasing HormoneNFATC1 protein, humanNFATC Transcription FactorsReceptors, LHRH

Identifiers

PMID19858197
PMCPMC2791005
OpenAlexW3125670220

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.