Evidence map›Paper›PMID 12805313›Full record

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

Transient receptor potential channel activation causes a novel form of [Ca 2+]I oscillations and is not involved in capacitative Ca 2+ entry in glial cells.

Maurizio Grimaldi, Marina Maratos, Ajay Verma

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 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
1.7field-weighted citation impact, top 18% 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

36 citing papers in PubMed, 93 citations in OpenAlex.

  1. Review
  2. Review
  3. Cytosolic CaTheranostics · 2021
    Article
  4. Physiology of Astroglia.Advances in experimental medicine and biology · 2019
    Review
  5. Physiology of Astroglia.Physiological reviews · 2018
    Review
  6. Article
  7. Article
  8. Diversity of Evoked Astrocyte CaFrontiers in systems neuroscience · 2017
    Article
  9. TRP channels in oxygen physiology: distinctive functional properties and roles of TRPA1 in OProceedings of the Japan Academy. Series B, Physical and biological sciences · 2017
    Review
  10. Review
  11. Store-Operated Calcium Entry in Müller Glia Is Controlled by Synergistic Activation of TRPC and Orai Channels.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2016
    Article
  12. STIM and ORAI proteins in the nervous system.Channels (Austin, Tex.) · 2015
    Review
  13. Article
  14. Store-operated calcium entry in neuroglia.Neuroscience bulletin · 2014
    Review
  15. Article
  16. TRP channels coordinate ion signalling in astroglia.Reviews of physiology, biochemistry and pharmacology · 2014
    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.

Maurizio GrimaldiDepartment of Neurology, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814, USA. mgrimaldi@usuhs.mil
Marina Maratos
Ajay Verma
Uniformed Services University of the Health Sciences · US

Funding

OXYGEN SENSING IN HUMAN GLIOMA CELLSR01NS037814 · NINDS · HENRY M. JACKSON FDN FOR THE ADV MIL/MED · PI VERMA, AJAY · 1998 to 2005
$1.4M
NINDS NIH HHS 5 R01 NS37814NINDS NIH HHS R01 NS037814
6 · The paper itself

Abstract

Astrocytes express transient receptor potential channels (TRPCs), which have been implicated in Ca 2+ influx triggered by intracellular Ca 2+ stores depletion, a phenomenon known as capacitative Ca 2+ entry. We studied the properties of capacitative Ca 2+ entry in astrocytes by means of single-cell Ca 2+ imaging with the aim of understanding the involvement of TRPCs in this function. We found that, in astrocytes, capacitative Ca 2+ entry is not attributable to TRPC opening because the TRPC-permeable ions Sr2+ and Ba2+ do not enter astrocytes during capacitative Ca 2+ entry. Instead, natively expressed oleyl-acetyl-glycerol (OAG) (a structural analog of DAG) -sensitive TRPCs, when activated, initiate oscillations of cytosolic Ca 2+ concentration ([Ca 2+]i) pharmacologically and molecularly consistent with TRPC3 activation. OAG-induced [Ca 2+]i oscillations are not affected by inhibition of inositol trisphosphate (InsP3) production or blockade of the InsP3 receptor, therefore representing a novel form of [Ca 2+]i signaling. Instead, high [Ca 2+]i inhibited oscillations, by closing the OAG-sensitive channel. Also, treatment of astrocytes with antisense against TRPC3 caused a consistent decrease of the cells responding to OAG. Exogenous OAG but not endogenous DAG seems to activate TRPC3. In conclusion, in glial cells, natively expressed TRPC3s mediates a novel form of Ca 2+ signaling, distinct from capacitative Ca 2+ entry, which suggests a specific signaling function for this channel in glial cells.

Indexed as

Adenosine TriphosphateAnimalsAstrocytesBiological ClocksCalciumCalcium ChannelsCalcium SignalingCells, CulturedDiglyceridesEnzyme InhibitorsFluorescent DyesGliomaImmunohistochemistryIntracellular FluidIon ChannelsNeuroglia1-oleoyl-2-acetylglycerolAdenosine TriphosphateCalciumCalcium ChannelsDiglyceridesEnzyme InhibitorsFluorescent DyesIon ChannelsOligonucleotides, AntisenseProtein IsoformsStrontiumThapsigargintransient receptor potential cation channel, subfamily C, member 1TRPC3 cation channelTRPC Cation Channels

Identifiers

PMID12805313
PMCPMC6740795
OpenAlexW1576543894

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.