Evidence map›Paper›PMID 12805284›Full record

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

Differential frequency dependence of P2Y1- and P2Y2- mediated Ca 2+ signaling in astrocytes.

Sami R Fam, Conor J Gallagher, Lorraine V Kalia, Michael W Salter

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 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
4.5field-weighted citation impact, top 5% 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

29 citing papers in PubMed, 84 citations in OpenAlex.

  1. Review
  2. AβCellular and molecular life sciences : CMLS · 2022
    Article
  3. Receptor-specific CaiScience · 2021
    Article
  4. Article
  5. Site-Specific Regulation of P2X7 Receptor Function in Microglia Gates Morphine Analgesic Tolerance.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2017
    Article
  6. Article
  7. Article
  8. ATP as a multi-target danger signal in the brain.Frontiers in neuroscience · 2015
    Review
  9. Article
  10. Neurovascular signaling in the brain and the pathological consequences of hypertension.American journal of physiology. Heart and circulatory physiology · 2014
    Review
  11. Review
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. 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

4 authors at 1 institution in 1 country.

Sami R FamProgramme in Brain and Behaviour, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada M5G 1X8.
Conor J Gallagher
Lorraine V Kalia
Michael W Salter
SickKids Foundation · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

ATP is a key extracellular messenger that mediates the propagation of Ca 2+ waves in astrocyte networks in various regions of the CNS. ATP-mediated Ca 2+ signals play critical roles in astrocyte proliferation and differentiation and in modulating neuronal activity. The actions of ATP on astrocytes are via two distinct subtypes of P2Y purinoceptors, P2Y1 and P2Y2 receptors (P2Y1Rs and P2Y2Rs), G-protein coupled receptors that stimulate mobilization of intracellular Ca 2+ ([Ca 2+]i) via the phospholipase Cbeta-IP3 pathway. We report here that P2Y1R-mediated and P2Y2R-mediated Ca 2+ responses differentially show two forms of activity-dependent negative feedback. First, Ca 2+ responses mediated by either receptor exhibit slow depression that is independent of stimulation frequency. Second, responses mediated by P2Y1Rs, but not those mediated by P2Y2Rs, show rapid oscillations after high-frequency stimulation. We demonstrate that the oscillations are mediated by recruiting negative feedback by protein kinase C, and we map the site responsible for the effect of protein kinase C to Thr339 in the C terminus of P2Y1R. We propose that frequency-dependent changes in ATP-mediated Ca 2+ signaling pathways may modulate astrocyte function and astrocyte-neuron signaling in the CNS.

Indexed as

Adenosine DiphosphateAnimalsAstrocytesAstrocytomaBiological ClocksCalciumCalcium SignalingCells, CulturedFeedback, PhysiologicalFluorescent DyesHumansMutagenesis, Site-DirectedProtein Kinase CPurinergic P2 Receptor AgonistsRatsRats, WistarAdenosine DiphosphateCalciumFluorescent Dyesmethylthio-ADPP2RY1 protein, humanP2RY2 protein, humanProtein Kinase CPurinergic P2 Receptor AgonistsReceptors, Purinergic P2Receptors, Purinergic P2Y1Receptors, Purinergic P2Y2ThionucleotidesUridine Triphosphate

Identifiers

PMID12805284
PMCPMC6740798
OpenAlexW1858218191

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.