Evidence map›Paper›PMID 19822518›Full record

ArticleThe Journal of biological chemistry2009

ATP released by electrical stimuli elicits calcium transients and gene expression in skeletal muscle.

Sonja Buvinic, Gonzalo Almarza, Mario Bustamante, Mariana Casas, Javiera López, Manuel Riquelme, Juan Carlos Sáez, Juan Pablo Huidobro-Toro, Enrique Jaimovich

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 78 papers.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed
7.6field-weighted citation impact, top 2% 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

78 citing papers in PubMed, 157 citations in OpenAlex.

  1. Review
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  17. Pannexin 3 channels in health and disease.Purinergic signalling · 2021
    Review
  18. Article
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  20. Article

18 more citing papers are in PubMed but not listed here.

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

9 authors at 2 institutions in 1 country.

Sonja BuvinicCentro de Estudios Moleculares de la Célula, Facultad de Medicina, Instituto de Ciencias Biomédicas, Universidad de Chile, Casilla 70005, Santiago 7, Chile.
Gonzalo Almarza
Mario Bustamante
Mariana Casas
Javiera López
Manuel Riquelme
Juan Carlos Sáez
Juan Pablo Huidobro-Toro
Enrique Jaimovich
University of Chile · CLPontificia Universidad Católica de Chile · CL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

ATP released from cells is known to activate plasma membrane P2X (ionotropic) or P2Y (metabotropic) receptors. In skeletal muscle cells, depolarizing stimuli induce both a fast calcium signal associated with contraction and a slow signal that regulates gene expression. Here we show that nucleotides released to the extracellular medium by electrical stimulation are partly involved in the fast component and are largely responsible for the slow signals. In rat skeletal myotubes, a tetanic stimulus (45 Hz, 400 1-ms pulses) rapidly increased extracellular levels of ATP, ADP, and AMP after 15 s to 3 min. Exogenous ATP induced an increase in intracellular free Ca(2+) concentration, with an EC(50) value of 7.8 +/- 3.1 microm. Exogenous ADP, UTP, and UDP also promoted calcium transients. Both fast and slow calcium signals evoked by tetanic stimulation were inhibited by either 100 mum suramin or 2 units/ml apyrase. Apyrase also reduced fast and slow calcium signals evoked by tetanus (45 Hz, 400 0.3-ms pulses) in isolated mouse adult skeletal fibers. A likely candidate for the ATP release pathway is the pannexin-1 hemichannel; its blockers inhibited both calcium transients and ATP release. The dihydropyridine receptor co-precipitated with both the P2Y(2) receptor and pannexin-1. As reported previously for electrical stimulation, 500 mum ATP significantly increased mRNA expression for both c-fos and interleukin 6. Our results suggest that nucleotides released during skeletal muscle activity through pannexin-1 hemichannels act through P2X and P2Y receptors to modulate both Ca(2+) homeostasis and muscle physiology.

Indexed as

Gene ExpressionAdenosine TriphosphateAnimalsApyraseCalciumCalcium Channels, L-TypeCalcium SignalingCell LineConnexinsElectric StimulationInterleukin-6Membrane PotentialsMiceMuscle, SkeletalNerve Tissue ProteinsPotassium ChlorideAdenosine TriphosphateApyraseCalciumCalcium Channels, L-TypeConnexinsInterleukin-6Nerve Tissue Proteinspannexin 1, ratPanx1 protein, mousePotassium ChlorideProtein IsoformsProto-Oncogene Proteins c-fosReceptors, Purinergic P2Ryanodine Receptor Calcium Release ChannelSuramin

Identifiers

PMID19822518
PMCPMC2787310
OpenAlexW2024048159

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.