Evidence map›Paper›PMID 14755000›Full record

ArticleThe Journal of physiology2004

Spatiotemporal patterning of IP3-mediated Ca2+ signals in Xenopus oocytes by Ca2+-binding proteins.

Sheila L Dargan, Beat Schwaller, Ian Parker

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of physiology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
2.5field-weighted citation impact, top 11% 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

47 citing papers in PubMed, 84 citations in OpenAlex.

  1. From IP3RPEP6 Inhibition of IPCellular and molecular life sciences : CMLS · 2025
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  4. CaPhysiological reviews · 2024
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  6. Modeling IPBiophysical journal · 2023
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  7. T cell CaFrontiers in immunology · 2023
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  8. Review
  9. Termination of CaCell calcium · 2021
    Article
  10. Article
  11. Article
  12. IPeLife · 2020
    Article
  13. Article
  14. Article
  15. Changes in CaFrontiers in physiology · 2019
    Article
  16. All three IPScience signaling · 2018
    Article
  17. Review
  18. Article
  19. Review
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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

3 authors at 2 institutions in 2 countries.

Sheila L DarganDepartment of Neurobiology and Behaviour, University of California Irvine, CA 92697-4550, USA.
Beat Schwaller
Ian Parker
University of California, Irvine · USUniversity of Fribourg · CH

Funding

Elementary Events of Intracellular Calcium SignalingR37GM048071 · NIGMS · UNIVERSITY OF CALIFORNIA-IRVINE · PI PARKER, IAN · 2011 to 2020
$5.3M
SPATIAL AND TEMPORAL ASPECTS OF INSP3 SIGNALLINGR01GM048071 · NIGMS · UNIVERSITY OF CALIFORNIA-IRVINE · PI PARKER, IAN · 1992 to 2010
$3.9M
COMPREHENSIVE ANALYSIS OF GENE FUNCTIONR43GM058329 · NIGMS · ACACIA BIOSCIENCES, INC. · PI DIMSTER-DENK, DAGO F · 1998 to 1998
–
NIGMS NIH HHS GM48071NIGMS NIH HHS GM58329NIGMS NIH HHS R01 GM048071NIGMS NIH HHS R37 GM048071
6 · The paper itself

Abstract

Ca(2+)-binding proteins (CaBPs) are expressed in a highly specific manner across many different cell types, yet the physiological basis underlying their selective distribution patterns remains unclear. We used confocal line-scan microscopy together with photo-release of IP(3) in Xenopus oocytes to investigate the actions of mobile cytosolic CaBPs on the spatiotemporal properties of IP(3)-evoked Ca(2+) signals. Parvalbumin (PV), a CaBP with slow Ca(2+)-binding kinetics, shortened the duration of IP(3)-evoked Ca(2+) signals and 'balkanized' global responses into discrete localized events (puffs). In contrast, calretinin (CR), a presumed fast buffer, prolonged Ca(2+) responses and promoted 'globalization' of spatially uniform Ca(2+) signals at high [IP(3)]. Oocytes loaded with CR or PV showed Ca(2+) puffs following photolysis flashes that were subthreshold in controls, and the spatiotemporal properties of these localized events were differentially modulated by PV and CR. In comparison to results we previously obtained with exogenous Ca(2+) buffers, PV closely mimicked the actions of the slow buffer EGTA, whereas CR showed important differences from the fast buffer BAPTA. Most notably, puffs were never observed after loading BAPTA, and this exogenous buffer did not show the marked sensitization of IP(3) action evident with CR. The ability of Ca(2+) buffers and CaBPs with differing kinetics to fine-tune both global and local intracellular Ca(2+) signals is likely to have significant physiological implications.

Indexed as

AnimalsCalbindin 2Calcium ChannelsCalcium SignalingChelating AgentsEgtazic AcidInositol 1,4,5-Trisphosphate ReceptorsInositol PhosphatesMicroinjectionsOocytesParvalbuminsPhotochemistryReceptors, Cytoplasmic and NuclearS100 Calcium Binding Protein GXenopus laevis1,2-bis(2-aminophenoxy)ethane-N,N,N',N'-tetraacetic acidCalbindin 2Calcium ChannelsChelating AgentsEgtazic Acidinositol 1,2,3-trisphosphateInositol 1,4,5-Trisphosphate ReceptorsInositol PhosphatesParvalbuminsReceptors, Cytoplasmic and NuclearS100 Calcium Binding Protein G

Identifiers

PMID14755000
PMCPMC1664953
OpenAlexW2105329563

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.