Evidence map›Paper›PMID 11600671›Full record

ArticleThe Journal of physiology2001

Calcium waves induced by hypertonic solutions in intact frog skeletal muscle fibres.

S Chawla, J N Skepper, A R Hockaday, C L Huang

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
0.7field-weighted citation impact, top 33% 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

23 citing papers in PubMed, 41 citations in OpenAlex.

  1. Article
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  3. Finite element analysis predicts CaScientific reports · 2021
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  4. In vivo cooling-induced intracellular CaPhysiological reports · 2021
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  5. Sarcoplasmic reticular CaScientific reports · 2021
    Article
  6. Energetics of muscle contraction: further trials.The journal of physiological sciences : JPS · 2017
    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

4 authors at 1 institution in 1 country.

S ChawlaPhysiological Laboratory, Department of Anatomy, University of Cambridge, Cambridge CB2 3EG, UK.
J N Skepper
A R Hockaday
C L Huang
University of Cambridge · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

1. Regenerative Ca2+ waves and oscillations indicative of calcium-induced calcium release (CICR) activity were induced in fully polarized, fluo-3-loaded, intact frog skeletal muscle fibres by exposure to hypertonic Ringer solutions. 2. The calcium waves persisted in fibres exposed to EGTA-containing solutions, during sustained depolarization of the membrane potential or following treatment with the dihydropyridine receptor (DHPR)-blocker nifedipine. 3. The waves were blocked by the ryanodine receptor (RyR)-specific agents ryanodine and tetracaine, and potentiated by caffeine. 4. In addition to these pharmacological properties, the amplitudes, frequency and velocity of such hypertonicity-induced waves closely resembled those of Ca2+ waves previously described in dyspedic skeletal myocytes expressing the cardiac RyR-2. 5. Quantitative transmission and freeze-fracture electronmicroscopy demonstrated a reversible cell shrinkage, transverse (T)-tubular luminal swelling and decreased T-sarcoplasmic reticular (SR) junctional gaps in fibres maintained in and then fixed using hypertonic solutions. 6. The findings are consistent with a hypothesis in which RyR-Ca2+ release channels can be partially liberated from their normal control by T-tubular DHPR-voltage sensors in hypertonic solutions, thereby permitting CICR to operate even in such fully polarized skeletal muscle fibres.

Indexed as

Anesthetics, LocalAnimalsCaffeineCalciumCalcium Channel BlockersCalcium Channels, L-TypeCalcium SignalingCell MembraneElectrophysiologyHypertonic SolutionsIon Channel GatingMembrane PotentialsMicroscopy, ElectronMuscle Fibers, SkeletalMuscle, SkeletalNifedipineAnesthetics, LocalCaffeineCalciumCalcium Channel BlockersCalcium Channels, L-TypeHypertonic SolutionsNifedipinePhosphodiesterase InhibitorsPotassium ChlorideRyanodineRyanodine Receptor Calcium Release ChannelSucroseTetracaine

Identifiers

PMID11600671
PMCPMC2278869
OpenAlexW1981620175

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.