Evidence map›Paper›PMID 9382901›Full record

ArticleThe Journal of general physiology1997

Caffeine-induced release of intracellular Ca2+ from Chinese hamster ovary cells expressing skeletal muscle ryanodine receptor. Effects on full-length and carboxyl-terminal portion of Ca2+ release channels.

M B Bhat, J Zhao, W Zang, C W Balke, H Takeshima, W G Wier, J Ma

Abstract read
In one paragraph

Article in The Journal of general physiology, 1997. 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
–field-weighted citation impact
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.

  1. Can 3 mg·kgNutrients · 2021
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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

7 authors.

M B BhatDepartment of Physiology and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106, USA.
J Zhao
W Zang
C W Balke
H Takeshima
W G Wier
J Ma

Funding

RYANODINE RECEPTOR OF E/C COUPLING IN STRIATED MUSCLESR01AG015556 · NIA · UNIV OF MED/DENT NJ-R W JOHNSON MED SCH · PI MA, JIANJIE · 1997 to 2006
$2.6M
LOCAL CONTROL OF CARDIAC EXCITATION/CONTRACTION COUPLINGR01HL055280 · NHLBI · UNIVERSITY OF MARYLAND BALTIMORE · PI WIER, WITHROW G · 1996 to 2000
$217k
NHLBI NIH HHS HL-55280NIA NIH HHS AG-15556NIA NIH HHS R01 AG015556
6 · The paper itself

Abstract

The ryanodine receptor (RyR)/Ca2+ release channel is an essential component of excitation-contraction coupling in striated muscle cells. To study the function and regulation of the Ca2+ release channel, we tested the effect of caffeine on the full-length and carboxyl-terminal portion of skeletal muscle RyR expressed in a Chinese hamster ovary (CHO) cell line. Caffeine induced openings of the full length RyR channels in a concentration-dependent manner, but it had no effect on the carboxyl-terminal RyR channels. CHO cells expressing the carboxyl-terminal RyR proteins displayed spontaneous changes of intracellular [Ca2+]. Unlike the native RyR channels in muscle cells, which display localized Ca2+ release events (i.e., "Ca2+ sparks" in cardiac muscle and "local release events" in skeletal muscle), CHO cells expressing the full length RyR proteins did not exhibit detectable spontaneous or caffeine-induced local Ca2+ release events. Our data suggest that the binding site for caffeine is likely to reside within the amino-terminal portion of RyR, and the localized Ca2+ release events observed in muscle cells may involve gating of a group of Ca2+ release channels and/or interaction of RyR with muscle-specific proteins.

Indexed as

AnimalsCaffeineCalciumCentral Nervous System StimulantsCHO CellsCricetinaeDose-Response Relationship, DrugElectrophysiologyFura-2Green Fluorescent ProteinsHeart VentriclesImage Processing, Computer-AssistedIntracellular MembranesIon Channel GatingLuminescent ProteinsMuscle Fibers, SkeletalCaffeineCalciumCentral Nervous System StimulantsFura-2Green Fluorescent ProteinsLuminescent ProteinsRyanodine Receptor Calcium Release Channel

Identifiers

PMID9382901
PMCPMC2229395

What OpenQuestion holds

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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.