Evidence map›Paper›PMID 12716922›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2003

Circadian phase-dependent modulation of cGMP-gated channels of cone photoreceptors by dopamine and D2 agonist.

Gladys Y-P Ko, Michael L Ko, Stuart E Dryer

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
1.1field-weighted citation impact, top 26% 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

27 citing papers in PubMed, 48 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Circadian regulation in the retina: From molecules to network.The European journal of neuroscience · 2020
    Review
  6. Article
  7. The Contribution of L-Type CaFrontiers in molecular neuroscience · 2017
    Article
  8. Article
  9. The rat with oxygen-induced retinopathy is myopic with low retinal dopamine.Investigative ophthalmology & visual science · 2013
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  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

3 authors at 1 institution in 1 country.

Gladys Y-P KoDepartment of Biology and Biochemistry and Biological Clocks Program, University of Houston, Houston, Texas 77204-5001, USA.
Michael L Ko
Stuart E Dryer
University of Houston · US

Funding

CIRCADIAN REGULATION OF VERTEBRATE PHOTORECEPTORSR01EY011973 · NEI · UNIVERSITY OF HOUSTON · PI DRYER, STUART E. · 1998 to 2005
$1.4M
CIRCADIAN REGULATION OF CGMP-GATED ION CHANNELSF32EY013920 · NEI · UNIVERSITY OF HOUSTON · PI KO, GLADYS Y · 2001 to 2003
$145k
NEI NIH HHS EY-11973NEI NIH HHS EY-13920NEI NIH HHS F32 EY013920NEI NIH HHS R01 EY011973
6 · The paper itself

Abstract

The affinity of cGMP-gated ion channels (CNGCs) for cGMP in chick retinal cone photoreceptors is under circadian control. Here we report that dopamine (DA) and D2 receptor agonists evoke phase-dependent shifts in the affinity of CNGCs for activating ligand. Inside-out patch recordings from cultured chick cones were performed at circadian time (CT) 4-7 and CT 16-19 on the second day of constant darkness. Exposing intact cells to DA or the D2 agonist quinpirole for 2 hr before patch excision caused a significant increase in the K(D) for cGMP during the night (CT 16-19) but had no effect during the day (CT 4-7). DA or quinpirole treatment had no effect on the Hill slope or the average number of channels per patch. The effect of DA was blocked by the D2 antagonist eticlopride and was not mimicked by D1 agonists or blocked by D1 antagonists. By contrast, a brief (15 min) exposure to DA or quinpirole caused a decrease in K(D) during the subjective day and had no effect during the subjective night. Thus, the effect of D2 agonists depends on both the duration of agonist exposure and the time of day. Application of DA or quinpirole evoked a transient activation of the MAP kinase Erk (extracellular signal-related kinase) during the day but caused a sustained inhibition during the night. Conversely, D2 agonists caused activation of Ca2+/calmodulin-dependent protein kinase II during the night and inhibited this enzyme during the day. A circadian oscillator in cones appears to regulate the nature of the transduction cascade used by D2 receptors.

Indexed as

AnimalsBiological ClocksCalcium-Calmodulin-Dependent Protein KinasesCalcium-Calmodulin-Dependent Protein Kinase Type 2Cells, CulturedChick EmbryoCircadian RhythmCyclic GMPDarknessDopamineDopamine AgonistsDopamine AntagonistsDopamine D2 Receptor AntagonistsIon Channel GatingIon ChannelsPatch-Clamp TechniquesCalcium-Calmodulin-Dependent Protein KinasesCalcium-Calmodulin-Dependent Protein Kinase Type 2Cyclic GMPDopamineDopamine AgonistsDopamine AntagonistsDopamine D2 Receptor AntagonistsIon ChannelsReceptors, Dopamine D2

Identifiers

PMID12716922
PMCPMC2667621
OpenAlexW2128104167

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.